Table 1 shows one common power train related problems of the 2020 Tesla Model 3.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
I am filing a complaint regarding a serious safety issue with my 2020 Tesla Model 3 standard range plus. While driving on the freeway, the car displayed a “power limited - ok to drive” message, followed by “power reduced,” and then automatically limited my speed to 60 mph. This happened unexpectedly on a busy freeway, nearly causing an accident with a car behind me. The message advised that “exiting and re-entering the vehicle may restore operations. ” I took the freeway exit and exited the car, re-entered, and resumed driving, but the error returned, reducing my speed further to 58 mph, and at one point, down to 7 mph. This behavior makes the car unsafe for freeway driving, as the speed can drop suddenly, putting me at risk of a collision. This issue persists on city roads as well, with speed reductions happening within a mile of driving, restricting the speed anywhere between 7-60 mph. I scheduled a service appointment with Tesla on 10/12/2024, but the earliest available date is 11/1/2024. I contacted Tesla’s customer service to prioritize my appointment or perform a remote diagnosis, but they refused to accommodate my request. During my own online research, I found that the car log indicates a “reardrive inverter sensor” detecting high temperatures, likely causing the speed restrictions, along with a non-functional powertrain pump. Although my car is under an 8-year warranty for the battery and drive unit, Tesla has sent me a pre-approval bill for the upcoming service, making me concerned they may try to classify these issues as non-warranty and charge me hefty amounts for repairs. Currently, I cannot safely use my vehicle, especially on freeways, and I have no other repair options outside of Tesla. This ongoing issue is urgent and impacts my safety and ability to drive the car reliably.
On August 2, 2023 at 0400, the Tesla m3 was charging in the garage using a home charger. Smoke indicative of an electrical fire likely originated from the vehicle and eventually triggered a smoke alarm in the kitchen. The driver was unaware the source of the smoke was the Tesla, disconnected the Tesla and moved it out of the house to protect the vehicleb assuming a fire was in the house, and called firefighters who searched the home without success for a source of the fire. The driver now believes the Tesla was the source as the garage access door was cracked open to feed the charging cable from the 240v outlet in the laundry room. The nearest smoke detector from the Tesla is in the kitchen, where the driver smelled smoke from an electrical fire. At roughly 0745, the driver was about to complete a one hour commute to work in this Tesla unaware that the incident at 0400 was related to the Tesla. The driver experienced a sudden vector and velocity change in the vehicle while traveling at highway speeds. This is the driver's last memory of the accident that followed. A witness driving behind the Tesla described the vehicle traveling in clear lanes when it abruptly jerked left, then right into the side of the highway into concrete barricades. The Tesla was destroyed, airbags deployed, and the driver was rescued by first responders,firefighters, and paramedics. The driver was evacuated to the nearest hospital with serious injuries. The driver suffered broken ribs, a pneumothorax, several lacerations to head and chest, several contusions across the shoulder, legs, and body, and a mild traumatic brain injury.
12v battery failed without warning. Car was parked. Was unresponsive. Could not unlock the car. Able to open trunk and passenger side door only. Drivers side would not open. Touchscreen black no power to do anything car essentially dead with no warning. There should have been on screen display informing driver of the need to replace 12v battery. There was none. Car needed to be towed. If this has happened while we were in the car we would have been locked in. Tow operator jumped the battery to open hood. Touchscreen restarted but car still unresponsive. Multiple warnings on screen. Tow mode would not work so car needed to be pulled with the rear wheels locked onto tow truck.
I got a "power reduced dir_a126" error code that limited my speed to 55 mph. This is dangerous on the highway as 55 mph is significantly under 70 mph and cars were almost rear ending me.
The rear drive unit of our Tesla failed on our Tesla Model 3 2020 (2 years at the time of incident). It is no longer available for inspection as it was replaced by Tesla. We had our drive unit fail for our 2020 m3 driving in the middle of what is considered one of the most dangerous freeways in California (110). After all the warnings came online, we had 30 seconds before the entire car stopped. Of the warnings (power reduced, acceleration and top speed reduced, automatic emergency breaking is disabled) there was no indication that the car would shut down. We made it to the exit ramp, but couldn’t make it to the shoulder so we blocked the entire exit. 511 was able to come in and help tow our car to a safer location. We took it to Tesla to be serviced and when asking the service rep if there’s any way we could have seen this coming, she just brushed it off as “it happens” and that there was no way to tell. It took us a while to feel comfortable with that.
The contact owns a 2020 Tesla Model 3. The contact stated that while reversing, driving, depressing the accelerator pedal while adjusting the seat, the vehicle went into park abruptly . There were no warning indicator lights illuminated. A software update was previously completed. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, who suggested a reboot and having the vehicle serviced. The approximate failure mileage was 20,000.
The contact owns a 2020 Tesla Model 3. The contact stated while driving at various speeds and using self driving feature, the vehicle experienced phantom braking. There were no warning lights illuminated. The contact depressed the accelerator pedal and continued to drive the vehicle. Additionally, the contact stated while reversing, the vehicle inadvertently moved forward and slightly bumped into a guardrail. There was no further information provided. The contact depressed the brake pedal and was able to successfully reverse after several attempts. The contact also stated that the vehicle would fail to make normal beeping sounds and alerts while reversing. The manufacturer was notified of the failure and informed the contact that unless he provided the specific time and date of the failure, they could not assist. The vehicle was not diagnosed or repaired. The failure mileage was approximately 10,000.
We had Model 3 with instance of unintended acceleration at the gate of a parking lot. This car was bought in may 2020. On December 6, 2020, she was on the way out of the parking gate and suddenly the car accelerated, hitting the side wall of the gate. The car flew over a two-way street, resulting in a compound fracture of her right hip requiring internal fixation and transfusion. The vehicle was inspected by the police. There were no warning lamps, messages, or other symptoms prior to failure.