Adaptive Cruise Control problems of the 2015 Tesla Model S

Tesla Model S has a notorious back hatch latching failure. It’s a flawed design that every replacement is a “when” and not “if for failure. As an owner its failed be about 4-5 times in 5+ years of ownership. The hatch back latching issue causes cruise control as well as their autopilot steering navigation feature to be disabled when latch starts acting up or failing to fully close, which are helpful safety components to keep your car on the road going at proper speeds and staying in lane. Reporting this in hopes someone pushes Tesla to do something about this flaw that should be a manufacturers defect.

The car veered suddenly to the left (out of the left lane of a highway) while supervised in auto steer. The driver could not move the steering wheel to avoid a collision with the guardrail as the steering wheel had locked up. The collision warning didn’t sound and emergency brakes did not activate upon impact. The airbags were deployed and the car was totaled.

Unknown.

When driving with autopilot engaged, the vehicle sometimes gives alerts even when there is no vehicle or obstacle in its path. Immediately once the driver takes control, the autopilot does not disengage but continue as usual. The autopilot suddenly brakes or slows down even when there is no obstacle on a freeway.

Tesla sent an “over the air” software update to my car that compromised the original functionality as designed at the date of manufacture. The software includes advancements that when installed on the original mcu1 hardware causes connectivity issues and significant delays in the Tesla autopilot system, making the safety assistance system untrustworthy. Tesla informed me this is expected behavior when using the new software on the mcu1 hardware and that it was on the customer to upgrade to the newer mcu2 hardware at a cost of $2250 even when the car is covered under a full warranty.

Two issues to flag: 1) door handles are defective. I have now had to replace all 4 door handles at $500+ each. There is clearly a design issue that should have been addressed and every part failing in the same way is unacceptable. 2) phantom braking when 'autopilot' engaged. . . Rarely the car will brake hard at highway speeds for no apparent reason. I have noted this seems to occur on specific parts of road such as driving under an overpass with an uphill slope. . . This has been dangerous and required quick reactions to prevent the car from stopping on the highway.

Instrument cluster not powering on or crashes/glitches while operating the vehicle. This makes the vehicle unsafe to drive while auto pilot is engaged because the auto pilot system stops operating which could lead to a serious accident. The vehicle speedometer and all other instrument cluster warning systems are unavailable because the screen is off/not working. Tesla has performed a remote diagnostic and claims no issues are identified. They then proceed to upsell me the new infotainment system that will rectify this problem for $3,000 dollars.

On two or three occasions now my Model S will slow down for no apparent reason while autopilot is engaged. It's happened at speeds between 35 - 45 mph and highway speeds. Problem seems to have started after ota updates. Car never had this problem before prior to the most recent ota updates.

System failure: adaptive speed control safety risk: my 2015 Tesla Model S, at highway speeds, smashed into the rear of a jacked up Ford f250 pickup. A head on collision at highway speeds put my wife (and dog) and I at great risk. Has the problem been reproduced or confirmed by a dealer or independent service center? I am unsure if or how Tesla is dealing with the problem of adaptable speed control failure. Has the vehicle been inspected? yes. Dan's paint & autobody and usaa insurance company adjuster my accident happened in the southbound passing lane at mile marker 178 on I-10, south of chandler on the gila river community in maricopa/pinal county it was dark outside with heavy traffic in both southbound lanes. My software version was 2021. 40. 6 I had the distance between cars at the closest setting , and had the adaptive speed control set at ~75. I was attentive with both hands on the wheel, eyes forward watching traffic with my wife whom was also watching the traffic. Without warning a Ford f250 stopped hard in front of me and my adaptive speed control did not react. The few beats I gave the adaptive speed control to respond first cost me precious braking time. I did hit my abs brakes and could feel the vibration as they attempted to slow down, but it was too late. I submarined under the bumper of the truck at a very high speed. There was no warning lamps, messages at the time of the accident. There was one early symptom that I recall. There was a Tesla software update a few days before the collision. On 11/27/22 before leaving for my trip, the dash screen to the far left did not display the map which it usually does when you set the gps to map the path. I rebooted with the steering wheel toggles, and the display returned to normal. There were no other software malfunctions that I recall prior to the adaptive speed control failure.

The car thinks the trunk is open but it is not. As a result, the car doesn't stop beeping as a warning to a trunk that is fully closed. In addition, I can't open the trunk at all. When driving the car I can no longer use autopilot and other safety features of the car. I also can't lock the care. All and all, the car in unusable, because of an issue with the trunk, this is definitely a faulty design.

My vehicle is subject to the Tesla mcu recall, in which the substandard emmc was killed by excessive logging and rendering the entire mcu inoperative. I had the mcu replaced prior to the recall, and filed the reimbursement claim when it went live. Tesla denied my claim, stating that the replacement was done for reasons other than those specified in the recall. Other Tesla owners report similar claim dismissals. Tesla must be legally forced to honor the recall and reimbursement order.

I have the media control unit (mcu 1) and it pretty routinely shuts down while driving which causes a loss of major component functionality. I saw that NHTSA is asking Tesla for a recall to replace and I think it's really important that Tesla do recall these vehicles because the software updates are insufficient to fix the problem. The mcu just needs to be replaced.

My infotainment mcu goes blank or is completely unresponsive. This will happen intermittently and without warning. Sometimes I get in my car and the screen remains blank for the entire drive, cutting off access to vital performance features of the vehicle, as well as disabling airbags. I've already taken this to Tesla under their 'warranty program', but they refuse to do anything other than reset the computer. They will not repair or replace anything.

When my mcu fails, I receive a message that says, "autopilot safety/convenience features unavailable. " Tesla's text messages to me state: - "the issue that you experienced with the center display resetting . . Was a continuation of the firmware issue we had identified. . . "- "this was caused by a known firmware issue",- "we do have a couple of known firmware issues that causing occasional resets or slow performance",- "since there are no repairs to be made at this time . . I will go ahead and close your service request" [and effectively refusing to repair my car under the warranty adjustment program] this issue is not an academic or financial one. I was driving on an interstate freeway in heavy rain approaching a needed charging stop when I suddenly lost control of the heat and defrost systems, the cruise control, all navigation displayandcontrol, and the "safety systems" which I assume are aeb. I had to either risk pulling over on the freeway, which is never completely safe, or scramble with the navigation on my phone to make sure I know which exit to take. On several other occasions, I have lost similar systems and the back up camera feed as I was backing up or needing to back up. Tesla has refused to honor its warranty adjustment program in writtentext messages, is creating an ongoing risk to the public, and seems to have, in addition to the known memory issue, a known but uncorrected software problem that significantly implicates safety. I strongly encourage NHTSA to follow up on the issues raised by Tesla's actions ASAP. Thank you for your attention to this matter.

While driving in heavy traffic the car's emmc went dead and took over 10 minutes to reboot. All safety driving features were not functioning during this time. This is the forth time this has happened in the past six months. Tesla sent an email that they had a memory module problem with the car's emmc that caused the same problem I was experiencing, so I made a service appointment. When I took it in I was told my car did not have bad memory modules. They said that it was "normal" for the emmc to reboot from time to time, and as a curtsey they would not charge me a diagnostic fee for looking at it. We exchanged several emails about how this could be considered "normal" especially since it was happening more often, but the offered no resolution to the issue. There really appears to be something wrong with these emmc units and Tesla doesn't know how or doesn't want to fix it. When the unit stops working I do not feel safe driving the car and I don't know when it is going to happen next.

Vehicle has documented mcu/emmc issues that Tesla avoids fixing. Hvac froze/inoperable, charging level froze inoperable to adjust, suspension settings inoperable causing scraping, disabling of autopilot and other navigation and safety features, occured mid-drive originally, now when stationary while vehicle is started it is inoperable/freezes for 7-10 minutes before turning on, often cannot select drive unless it is through the app on phone, backup camera fails/is unavailable or is very slow to appear, often after backup completed. July '20 at 64k miles dealer acknowledged emmc/mcu issues, performed soft reset, claimed worked m, yet Aug '20 they had to do again. Vehicle continues to display issues associated with lagging/slow processor, dealer indicates it is not the documented issue abundantly described and consistent with issues on Tesla forums across the internet. Further detailed documentation/communication available within Tesla app when I submitted to Tesla, but here is ancillary supporting documentation attached.

2015 Model S p85d with failed mcu (media control unit) since beginning of July. Tesla still does not have a part to repair my car. A temporary fix in August only lasted around 4 weeks and completely failed again. When mcu fails, all safety features are not available. No backup camera. No turn signal. No control on headlight so if it rains during the day I can't maually turn headlight on either. Basically just a car that moves and stops without any other function. Tesla is not taking the problem seriously and waiting nearly 1/2 a year and still no parts available is unacceptable. Tesla obviously have parts available to make new cars and are ignoring customer who actually helped a new car company to thrive. Please force Tesla to take this matter seriously and.

While driving main screen turns off - reboots about 5-10 minutes off- while off- turn signals are not audible inside car all other safety parameters are not accessible: collision avoidance, brake assistance, this has occurred multiple times - I must take a picture while occurring which happens while driving. Tesla has full access to logs. Diagnostics by Tesla representative tells me that my memory chip is within parameters and thus not eligible to be replaced. Although I must continue to experience the reboots that shutdown most of its features while it occurs. Not to mention my daily occurrences: - charging system adjustment panel does not draw on screen properly; which causes incorrect selection of amount of charge needed. Center arrow which is supposed to show doesn't until after selected.