12 problems related to engine and engine cooling have been reported for the 2015 Tesla Model S. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Tesla Model S based on all problems reported for the 2015 Model S.
Was driving Tesla when warning light appeared “ charging declined “ . Drove car home battery no longer charging . Tesla stopped working after only 68,000 miles . Tesla wanted $15000 to replace the battery more than the car is worth.
Steering: while driving today (7/5/2025), all of a sudden and without warning, "driver assist" (power steering) became disabled. Steering wheel immediately became heavy in the sense that it was extremely difficult to turn. Motor: also, on 02/22/2024, while driving on the freeway at freeway speed, all of a sudden and without warning, the rear ldu (large drive unit) failed and the car became inoperable. At that time, the car had approximately 45k miles on it.
In 6 years the drive unit has failed and been replaced. Multiple other Tesla owners report similar issue. I have a Tesla s 2015. The car will not drive or will abruptly stop driving when the drive unit fails. First incident I was driving on 55mph road and abruptly stopped. Second incident I cannot recall. Third incident Tesla provided no support and the car was experiencing multiple driving failures which would turn back on to allow the car to only drive 2-7mph. Tesla reports they know it is a problem with the coolant leaking through the seals which kills the motor. If this is a known issue, why are these models still allowed on the road? this has me terrified knowing that a Tesla can go from 55mph to abruptly stop when the drive unit dies. It happened to me! now that I know it happens with others and Tesla is aware, it makes me question why there is no recall to fix it.
On September 7, 2021 I was driving in heavy rain conditions. The rain was so heavy I could only drive at speed of 25 mph. My car displayed a message "car may not restart - service required" I pulled under a canopy of a gas station and put the car in park. The car did not restart after that and was towed to Tesla service center. The next day I was told that a rapid mate vehicle side connector failed due to water ingress and that hv battery needs to be replaced due to same damage. I was presented with a $23622. 54 invoice even, though, the battery is covered under existing powertrain warranty. The car was never driven into standing water or a puddle. Water has not entered the interior of the car. The battery and other electrical components of the car are poorly insulated / isolated presenting the risk of water damage and or electric shock under ordinary driving conditions.
The touchscreen in my 2015 Model S has completely failed. I've attempted all of the resets that Tesla recommends to restart the system to no avail. The car is nearly useless, none of the electrical features of the vehicle work, including heating/air conditioning, charging features, audio or turn signals. The car worked fine yesterday, today the screen was just gone.
The mcu failed while we were traveling, which basically locked the climate control, access to suspension, speed control, autopilot, navigation, radio, turn signals, and back up camera.
The contact owns a 2015 Tesla Model S. The contact stated that the media control unit touch screen was inoperable. The contact stated that while attempting to recharge the battery, the system flickered and failed to charge. The contact stated that the back-up camera was also inoperable. The vehicle was undrivable. An independent mechanic went to the residence to inspect the vehicle and the contact was informed that the media control unit needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 89,586.
The mcu went out. Turn signals, brake lights, backup camera, hvac controls, all went with it. Car would drive, but would not.
The mcu v1 is known to fail. It's become sluggish and black screens. Not acting as it should.
Tesla has reduced the charging capacity and charge rate per: NHTSA action number: dp19005 - investigation subject : battery management software updates prior to this software update, the charge rate was double the shown rate.
Nhtsa action number: dp19005 - investigation subject : battery management software updates starting with a software update in may 2019, Tesla capped the max voltage the high voltage battery would charge to. They claim they did this "out of an abundance of caution" after several non-crash fires happened to these models. Tesla took action to downgrade horsepower and range along with all other aspects of performance through a total voltage cap after claiming to be releasing a fire-safety update, but officially no safety update was released. This change happened while the car was parked in my garage and stationary. Is this car at risk of non-crash fire? is it safe to park in my garage? since Tesla has refused to answer any of the above questions and only made vague statements implying a safety risk - to the press, not to me - I seek definitive answers from an NHTSA investigation.
Starting with a software update in may 2019, Tesla capped the max voltage the high voltage battery would charge to. They claim they did this "out of an abundance of caution" after several non-crash fires happened to these models. Tesla took action to downgrade horsepower and range along with all other aspects of performance through a total voltage cap after claiming to be releasing a fire-safety update, but officially no safety update was released. This change happened while the car was parked in my garage and stationary. . Read more...
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