Table 1 shows one common electrical system related problems of the 2021 Kia Motor Sorento.
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems |
I am writing to formally file a complaint regarding my 2021 kia Sorento and the repeated lack of resolution from the dealership where the vehicle was purchased and serviced. I have taken my vehicle to the dealership multiple times to address ongoing and serious safety concerns. Despite having active warranties on the transmission and powertrain, I have continually been told that there is nothing they can do, and my concerns have not been properly addressed. The vehicle is experiencing persistent issues, including: the transmission jerking and jarring when shifting gears the dashboard and center display screen intermittently go completely black while driving these issues do not occur constantly, but they happen frequently enough to pose a significant safety risk. I regularly have my grandchildren in the vehicle, and their safety, as well as my own, is my highest priority. Each time I have contacted the dealership to report these problems, I have been met with excuses and resistance to even scheduling an appointment. Due to the lack of cooperation, I felt I had no choice but to drop off my vehicle on April 13, 2026, without an appointment in order to have it addressed. I am extremely disappointed in the level of service and treatment I have received. As a loyal customer—this being my third vehicle purchased from the same dealership—I have never experienced this type of disregard. I also feel that I have not been treated fairly and, at times, have been dismissed in a way that is concerning and unacceptable. I am requesting the following: a full and thorough diagnostic of my vehicle, specifically addressing the transmission and electrical issues proper repair under warranty clear communication regarding findings and next steps immediate attention to these safety concerns I purchased this vehicle with the expectation of reliability and safety. At this time, I do not feel safe driving it, and I am requesting that kia take this matter seriously.
Our 2021 kia Sorento has been to elmhurst kia service numerous times . The chief complaint is the kia sorrento keeps losing power while in drive reverse middle traffic even on the highway but yeah every time we take it in, they say either it’s the battery . You can’t use it in the eco mode . Turn off the shut off while in drive mode when at stops ! always a different excuse, but yet no recall and it’s not showing up on their computer, but yeah it’s happening and kia does not want to take ownership. The vehicle has been left there for numerous weeks at a time leaving us without a vehicle no loaner . But because cannot duplicate issue release vehicle back with no repairs or maintenance. Kia prefer you taking the car getting into a car accident before they decide to do anything or even a lawsuit because not enough people having same issue with the 2021 kia Sorento s model ! if you also have these issues please report them here so they can be forced to open a recall !!! before someone gets seriously hurt my Sorento has loss power on highway and in the middle of train tracks with my little ones in Sorento and we drove the vehicle from day one original owners not a used Sorento.
On 3/26/2026, I was driving at 45mph when the vehicle started slowing down and the auto stop light on the dash was blinking yellow. Every time it blinked, the car slowed even more. I tried to speed up, but it slowed down more. This could have caused an accident. I pulled off on the side of the road and shut the car off. I waited a few minutes and started the car. It ran alright and the light did not blink. It has been alright so far. If it occurs again, I will call the dealer to have it checked out.
My check engine light came on and went to dealer ship jn oct of 2025 they stated the egr needed to be replaced and would cost 1300 to repair but inform me they didn't have the piece to replace at that time to reschedule app. Also reservoir coolant light keeps coming on . I called several times to lumberton kia at one time they stated that they didn't have but 1 mechanic that worked on hybrids and he was behind. I finally have a appointmentthis weekto see what is exactlygoing on with my SUV cause now I have a hesitation when pressing the gas and my transmission jerks.
Referencing report [xxx] we are having issues getting the fuel filling door to open. We have unlocked the car, several times, but it will not open. We had to pry it open so we could fill the tank and have left it open since as to not have the issue again. Part number in question - 81560r5000 there are other recalls on the car that we need to get taken care of. Is this another one in addition? information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
The issue appears to involve the electric oil pump and related components. My 2021 kia Sorento had a recall for the electric oil pump that was marked “completed” in January 2023; however, the dealership only performed a software update and did not replace any mechanical components because no fault code was present at that time. Beginning around October 2025, the vehicle started experiencing drivability issues including hesitation and bogging down when accelerating from a stop. A dealership representative later stated the electric oil pump and housing likely need replacement and that the transmission may also be affected. The vehicle is available for inspection upon request. This issue creates a safety risk because the vehicle frequently hesitates or bogs down when attempting to accelerate, especially when pulling into highway traffic. When pressing the accelerator, the vehicle sometimes struggles to engage and move forward, which increases the risk of a collision. I brought the vehicle to kia of rbc and spoke with service advisor justin hawkins. At the time of inspection, the check engine light had turned off and I was told they could not diagnose or repair the issue unless the warning light was active. I was instructed to continue driving the vehicle until the light returns. During a later conversation, dealership staff indicated the electric oil pump and housing likely need replacement and that the transmission may also require replacement, but they could not confirm this without the warning light being present.
The car has completely shutdown and nothing works while parked and has not started until the next day. This has happened 3 times in 5 months.
The contact owns a 2021 kia Sorento. The contact received notification of NHTSA campaign number: 25v649000 (electrical system, visibility); however, the part to do the recall repair was not yet available. The local dealer was called but was unreachable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue, but the contact was informed that the call could not be transferred to the recall department because the department was undergoing a training session. The contact had not experienced a failure.
My vehicle has been slow to start and I have had all other issues come on on my vehicle as far as lights as far as the forward collision warning light has came on and the check driver attention warning light has come on as well while I’m running my hvac past the level 2. I have also had my battery tested and that has tested fine. I have had my alternator tested and the first time it came back good the second time it came back failed and the third time it came back good.
The drive mode selector in my kia Sorento was found to be defective. The selector forces the vehicle into "eco" mode on startup regardless of the previously selected mode. This creates unexpected throttle response at startup given the manual states leaving the vehicle in other modes (such as "Smart" or "comfort") will be retained on key-cycle. The specific incident in question produced unexpected throttle response while backing into a highly-trafficked road and resulted in unexpected proximity to oncoming traffic. The selection module has a further failure state: the backlight lamp showing selected drive mode has gone out preventing ready identification of current drive mode.
The contact owns a 2021 kia Sorento. The contact received notification of NHTSA campaign number: 25v649000 (electrical system, visibility); however, the part to do the recall repair was not yet available. The contact stated that while driving at an undisclosed speed, with the a/c activated, there was an abnormal burning odor entering the vehicle through the vents. The burning odor was coming from the vehicle whether the a/c was in use or turned off. The vehicle was taken to the dealer. The contact was informed that the VIN was not under recall. The vehicle was not repaired. On a separate occasion, while driving at an undisclosed speed, the vehicle jerked and failed to accelerate as intended while depressing the accelerator pedal. The contact stated that the failure was more evident while the vehicle was driven uphill. No warning lights were illuminated. The vehicle was taken to the dealer. However, the vehicle was not repaired. Most recently, the battery was replaced, and the contact stated that there was an abnormal sound coming from the engine. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 75,000.
The car has completely shutdown on 3 separate occasions. It wouldn't start and all the electrical did not work. It started the next day. All this in a span of 5 out of the 8 months we purchased it. The last time, we found the fuse box was burnt when the tow truck showed up to take it to the dealership. The dealership is trying to blame us because we changed the battery after the second time and not honoring the warranty. They are trying to charge us $18,000. The car had already shut down two times before we even changed the battery. We contacted kia corporate and nothing has been done, but just phone call saying they will call us back after they talk to the dealership. I got so scared for my wife because she was the one driving the car. This is such a dangerous problem with the fuse box. I researched car problems with kia Sorentos and sure enough other Sorentos have been recalled, but not ours.
Sorento is not working properly due to transmission oil pump. This has been recalled by kia but my car does not fall under the warranty.
My car will sometimes completely stall at a light when stopped and not restart with the automatic stop system it has happened about 5 times almost causing a wreck.
My vehicle completely shut off while I was driving with my children in the car. The dealership replaced the battery but never identified the root cause. Since then my car has been experiencing rpm surging while in park — the engine revs up and down repeatedly on its own. The vehicle also feels sluggish and does not want to accelerate properly while driving. Additionally since taking ownership of the vehicle my window has squealed every time it rains and I roll down the window. The dealership has replaced the seals, lubricated and cleaned the window multiple times and the problem persists. The defective window seal also caused a gash in my window tint requiring replacement. I have taken my car to my kia dealership multiple times and they have been unable to fully resolve these issues. My car is currently at the dealership right now and they still cannot find the problem. I contacted kia corporate on March 20, 2026 and opened a formal case. These defects have put my children in danger and I am requesting a formal federal investigation.
My 2021 kia Sorento lx has been having issues everyday where all of my dash lights come on, my power steering goes out and I can’t shift into or out of any gears. I have taken it to a kia dealership (towed) twice already and they can’t find out the issue or unwilling to find it out. I have contacted kia corporate and still no response from them. Kia has also refused to give me a loaner during this issue.
Electrical issue all dash lights came on and couldn’t shift into gear, had to replace my main computer as it was fried at 72,000 miles, also had to get the steering column replaced total of $6,000 fixes.
My electrical system failed. While on park I was unable to shut of the vehicle using the engine start stop button. After waiting for the vehicle to automatically turn off. The vehicle started trying to restart itself. The negative battery post had to be removed for the vehicle to stop. The entire safety system failed and all warning lights are still displayed on the dash. The backup camera and radio display went completely blank and was unavailable.
The stop go feature is not working correctly, when it does cut off at a light after releasing the brake to move forward it takes 3-5 seconds to start. When the cars behind me see that I release the brake they assume im going to move which doesnt happen at first. Some occasions the stop n go just doesnt work at all.
The panoramic sun roof opens but will not close. It takes 6-12 attempts to get it to close, it will move to where its an inch away from closing then reopen. Kia has recalls for this make and year but says my car is not affected. Attempting to get it to close is very distracting and frustrating taking focus away from driving.
On [xxx] we were driving the kia at slow speed due to snow on the road when a warning light came on which we think said hybrid vehicle failure pull over. The car stopped and the traffic lane with the engine off. The car would not start and we were exposed to traffic. Fortunately, we were on a country road at the time about a mile from our house and we were not struck by following vehicle when the car shut off and stopped in the traffic lane. If we had been on a beltway with 60 or 65 mph traffic obviously the result would’ve been quite different. Because I felt the vehicle was not safe to drive. I had it towed to the kia dealer in salisbury pocahontas kia, who have not been able to duplicate the problem and have also not been able to tell us what was wrong with the kia to cause this problem in the first place. Unless there is a clear reason why this happened and it can be fixed then we have no reason to believe this would not happen again and endanger our safety. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
I unable to accelerate to merge on to the highway. This is the second time that my car was unable to accelerate and kick into gear. The first time was in 2021/2022 a few months after getting the car.
The contact owns a 2021 kia Sorento. The contact stated while at a red light, the vehicle stalled. The contact turned off and restarted the vehicle and the vehicle returned to normal operation. No warning lights were illuminated. The vehicle was taken to a dealer and was diagnosed, and it was determined that the battery needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer to be diagnosed; however, the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 43,000.
Intermittent issues with windows not operating and doors will not unlock, which means the rear doors will not open.
Windows and door locks will intermittently stop operating. When doors will not unlock the rear doors will not open. Turning vehicle off and restarting 1-6 times will usually make the problem stop for a short time.
Component: electrical system / forward collision-avoidance assist / speedometer incident summary: ?I am reporting a catastrophic and uncorrected safety defect in my 2021 kia Sorento (VIN: [xxx] ). ?pre-accident attempts: before April 2024, I repeatedly sought diagnosis for instrument cluster 'glitches. ' the kia dealer misdiagnosed this as a battery failure, charging me out-of-pocket for a replacement that did not resolve the issue. ?collision (April 22, 2024): while driving, the instrument cluster suffered a total system crash into 'factory mode,' losing all telemetry. Simultaneously, the vehicle's forward collision-avoidance assist (fca) failed to engage. Despite the vehicle being equipped with automatic emergency braking designed to detect and mitigate collisions, the system provided no warning and no autonomous braking prior to striking a deer. ?post-accident failures: following the crash, geico insurance funded a wiring harness replacement at a kia facility (backed by a geico lifetime warranty). However, the glitches and 'factory mode' errors have returned, proving the vehicle's core safety systems remain compromised. ?safety risk: this vehicle is non-compliant with fmvss 101 and 127. The failure of both the speedometer and the autonomous emergency braking creates an extreme risk of further injury or death. Kia corporate has failed to address this documented accident history. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
Sometimes the vehicle will stall and not want to move. I have to try and coast off the road to kill the car and restart it. Also sometimes the radio goes completely black and doesnt come back on even if you kill the car.
The contact owns a 2021 kia Sorento. The contact stated while driving at an undisclosed speed, several unknown warning lights illuminated. The contact stated while the vehicle was parked, the vehicle failed to shift into the intended gear and stalled. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the wiring harness for the remote starting system had malfunctioned and needed to be replaced. The wiring harness was replaced; however, the contact stated that after driving for an undisclosed period and parking the vehicle, the contact was unable to shift the gear shifter. The vehicle was taken back to the dealer but was not diagnosed. The manufacturer was made aware of the failure and referred the contact to the state attorney general who then referred the contact to the NHTSA hotline. The vehicle was not repaired. The failure mileage was approximately 34,256.
The contact owns a 2021 kia Sorento. The contact stated that while the vehicle was parked or while driving, there was an abnormal sound coming from the a/c when activated or turned off. The contact stated that after lowering the temperature, the air conditioning shut off independently. The contact stated that the alarm independently turned on at all hours of the night. The contact stated that the rear plug outlets in the vehicle failed to operate as intended, and the rear plugs turned on and off independently. The contact stated that while driving at undisclosed speeds, the auto start/stop system independently turned off the vehicle. Additionally, the rear-view camera was displaying a blank screen, with the auto start/stop warning lights were illuminated. A dealer was contacted. The vehicle was taken to a dealer to be diagnosed; however, the diagnosis was unknown. The vehicle was not repaired. The contact stated that the failure had occurred on several occasions. The manufacturer was notified of the failure and informed the contact that the dealer was unable to determine the cause of the failure, so there would be no assistance provided. The failure mileage was approximately 108,000.
My 2021 kia sorrento has shut down and died while on a highway drive 2 days in a row. The engine light comes on, the oil light comes on, and and the phrase “engine off. Shift to n then start engine” comes on. Prior to this, other issues were happening. Originally, my automatic start wasn’t working properly, and a kia service advisor told me to “turn that feature off”. After that, while driving down the road last month, all symbols on my dash began flashing and the phrase “check forward safety system” appeared.
Vehicle shut off on interstate while slowing for a wreck and almost caused our own acda crash. Entire gauge cluster flashed and started back up after stopping in the roadway for approximately 5 minutes without restarting. The vehicle was able to be driven home and was taken to a local kia dealership where after 3 days has not been able to replicate the issue.
I received the recall notice essentially telling me not to drive this vehicle and park it away from my home or other vehicles. When I contacted kia I was told all they are currently doing is a reimbursement of up to 40 dollars a day for a rental while they figure out how to fix this. Rentals here are over 100 dollars a day and when I told them that I was told the additional money would be on me. My car is still under warranty but they expect me to pay for their issue. Due to this I am still driving a car they recommend parking and will continue to do this. If they were actually concerned about this they would fund rentals and not make me pay for them up front and for over half the cost. When I contacted my dealer they directed me to the manufacturer, no help at all. I am only still driving this car because it would be too expensive for me to fund a rental for an unknown length of time.
The contact owns a 2021 kia Sorento. The contact stated while driving and coming to a complete stop, the auto start/stop feature failed to engage upon releasing the brake pedal. There was no warning light illuminated. The contact restarted the vehicle manually. The contact stated that the failure had been reoccurring while at a complete stop. The vehicle was taken to the dealer where an unknown software update was completed under an unknown recall; however, the failure reoccurred increasingly. The contact stated upon releasing the brake pedal while at a complete stop, the vehicle would turn on temporarily. The contact stated she would manually restart the vehicle. The dealer was notified of the failure and informed the contact to bring the vehicle to their location for test driving. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure referred the contact to the dealer. A case was opened. The failure mileage was approximately 34,000.
Vehicle went into limp mode suddenly while driving on the road and would only go 10 mph. We were able to pull vehicle aside and within a minute the car would not move. Check engine light came on with a warning message to pull vehicle to the side of the road. We were able to drive the vehicle home 7 miles after waiting about 1 hour after the issue and the next day drove it to the dealership. Car has been at dealership since 8/8/22 and service advisor and kia engineer have yet to figure out what went wrong. We have no eta as of today when we will get car back. This issue is concerning as the vehicle came to a complete stop with traffic around us.
Refill inverter coolant notice comes up after routine oil change and downhill control turns on without me turning it on I have to shit my vehicle off in order for the brake control to turn off, available for inspection upon request. This notice interferes with me seeing the digital speedometer. Coolant was checked by dealer no leaks found, was told to wait patiently until a fix is available. No prior issues until I took it in for an oil change with the dealership.
I have owned this vehicle for about 1 yr & 7 months now. It's been great but all of a sudden last Friday, the dashboard started producing an engine overheat warning with an alarm sound when I was driving under normal conditions. So then I pulled out of the highway and went to the nearest parking lot, and checked the engine. The coolant color was normal & max level. No sign of leaking. Then we resumed driving and nothing happened. Later on the way back home. . . The same thing happened. The alarm sounded for a while and the temperature indicator reached red at the max level then it went away. It was already too late for us to reach out to either dealership or kia, so I was going to get in touch later. The next day afternoon, I got a diagnostic appointment for the coming Wednesday with the nearest kia dealership and went out to take care of a few other stuff. The alarm sound with the temperature gauge reaching the red max level happened again after merging into the highway, and it went off after a while. This occurrence has happened 3 times already and I'm a bit worried that it may happen again and something else may happen even though the engine and other fluid levels were fine based on the visual inspection. Not sure if this is fixable. . .
There is a constant error happening daily where a warning shows “refill inverter coolant” it takes up the main display and no dealer has a fix.
There is a warning message stating "refill invertor coolant" that keeps coming up. The coolant is already full and the car functions normally. However, the warning message can only be cleared for a few seconds before it returns. The message covers up other information on the display such as digital speed and driving warnings such as lane departure. I feel this is an unsafe condition. The dealer I talked to said they are aware of the issue and trying to resolve it on another customer's car. At this time they are unable to resolve the issue.
Car has been having issues with not starting many times also dealership was contact also was serviced and still having issues.
Refil inverter fluid warning light is on constant, this doesn’t allow the driver to access any digital information while vehicle is on. The vehicle is also having issues with the entertainment consul, bluetooth connection issues along with the ability to access apple car play. Dealership says it’s kia and nothing is being done. Various forums with others having similar issues.
After being driven for 45 miles, with no problems, then parked for 2 hours, then when I started to drive, dashboard lit up "pull over safely immediately". I pulled over, shut car off and restarted. Same notice appeared. Tried again and nothing appeared. I attempted to move the car and it would not engage in drive or reverse. Shut car off, started again and still would not move. Then was towed to a kia dealership. Upon inspection, I was told it needed a new transmission. Vehicle had 5,606 miles. Car is at dealership since April 4 waiting for new transmission. I was told there are other kia's also waiting for new transmissions. If I had been driving and car suddenly shut off, it would have been very dangerous (there are many such reports online where people have experienced this). There is documented evidence on line that others with low mileage have had this problem dating back to April 2021. This car needs to be recalled and significant changes made. The car is available for inspection at the dealer's location, lou sobh kia, 1135 buford road, cumming GA 30041 if you need. You can reach me at 770-861-2513 or via email lbernknopf@gmail. Com.
I have a ‘21 Sorento hybrid. The refill inverter coolant warning light keeps coming on. The first time it happened was on a road trip. A local dealer told me to check coolant levels and when it was full, told me it was safe to drive. I had it looked at as soon as I got home. By that time, the light had gone off. They flushed and refill the coolant. It happened again within 3 weeks. I took it in again. The dealer inspected said nothing was wrong with vehicle. Safe to drive. Also said I was the second one of these they’d seen. They were told corporate is working on a fix. I starting a ticket with kia customer service. It’s been 9 days and no response from them. I am counting on the dealers being correct and that it is safe.
Inverter coolant refill light will not turn off. This is available for inspection. This could be a possible fire risk. Issue has been confirmed at dealership. Components have been inspected by manufacturer. Issue started around 23,000 miles.
The inverter coolant refill light will illuminate at all times even with the system serviced. Kia has serviced the system but has no solution on how to stop the light. The light also blocks out any other warning that may happen on the dash. With the light illuminated while driving, it is impossible to determine if the system is empty to cause a fire or just a faulty light. The dealership has confirmed the faulty warning light. There are no computer codes associated with the warning light.
We had just received our Sorento back from being in the shop for 4 months due to being in an accident. Part of the repair work was to have the software updated and reprogrammed at a kia dealership, which was completed. We picked up the car on Tuesday, Feb 15, 2022, and on Wednesday, Feb. 16, as we were traveling down hwy 27 in lake wales, FL, the alert began to ding and the hybrid warning came on, as well as other lights (I can't remember which ones). The car lost acceleration capability, but as we slowed and turned down another road, the car began to slightly accelerate very slowly. We were able to travel another mile, when the acceleration completely stopped. We pulled over to the side of the road and put the car in park. The engine was very rough. The message came on to leave vehicle in park to charge the hybrid battery. When we did that, the engine started for about 5 seconds, then shut off. We attempted this two more times, with the same results. We also tried to jump the car, according to the operator's manual, but it didn't work. We had to have the car towed to the dealership.
Transmission failure at 9108 miles. Car was turned on and error code stating of some form of a transmission failure. Odd electrical sounding issue in engine bay as well. If the transmission had failed while I was driving I could have gotten into a serious accident. Kia is already notorious for failing transmissions in their other vehicles. This car maybe no different.
The contact owns a 2021 kia Sorento. The contact stated that while driving approximately 10 mph over a speed bump, the vehicle shut off. The contact was unable to pull over to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed with a bad connection at the fuel pump fuse box. The dealer performed a minor wiring repair. The contact stated that while driving 60-80 mph, the vehicle failed to accelerate as intended, and the vehicle shuddered and then jolted. The vehicle was taken to calavan kia [xxx] ), but the failure could not be duplicated; however, the coils were replaced. The contact stated that upon starting the vehicle, several unknown warning lights were illuminated, and the vehicle was inoperable. The contact stated that upon restarting the vehicle, the warning lights were turned off, and the vehicle operated as needed. The contact also stated that the vehicle was making an abnormal rattling and ticking sound while driving. The vehicle was taken back to the second dealer, where the failure could not be duplicated; however, the failure persisted. The vehicle was taken to a third dealer, ed voyles kia [xxx] ), where the failure could not be replicated. Additionally, the contact stated that a/c system was inoperable. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 6,099. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
Purchased vehicle new on 4/7/21 had an issue on 4/15/21(NHTSA claim# 11408325) - sons kia advised that it was just a loose battery terminal cable. Pleaded with them to replace cable for possible short to no avail. On 6/6/21 - the car wouldnt open with key or uvo application - called kia roadside assistance twice and couldnt get anyone. After a couple of hours, the car finally had power and let me in. While driving home, on the interstate, I was going 60 mph. I tried to speed up, but the car wouldnt let me and the rpm stayed at 2(2000). When I got off the exit, I slowed down to turn. When I went to push gas, it didnt want to accelerate. It finally accelerated after a couple tries. Additionally, I noticed when speeding up and slowing down - I hear clicks when the gears change. I dropped the automobile off at calavan kia in lithia springs, GA. Waiting on a service advisor to call.
Only had car 8 days with 500 miles. Went to pull away from stop sign and car cut off. When attempted to restart, car advised to place in park first. Once placed in park and pressed start button - all systems went dead. Sparks came from grounding cable under hood. When grounding cable was adjusted, car started turning on and off randomly. After waiting two hours for tow truck, was able to adjust ground cables well enough to drive home. Subsenquently, car was towed to dealership.