2014 Tesla Model S Engine Problems

“Re: NHTSA action number: dp19005 - investigation subject : battery management software updates - vehicle had sudden loss of battery capacity and charging velocity after software update in may 2019. This has continued with a roughly 15% reduction in the kwh rating of the battery (published rating 85.0, actual 71.65). I am disappointed with the reduction in the performance and usability of the car, but more concerned with the potential of an undisclosed defect or risk that I am am not aware of.”

“Total main computer failure (mcu) - many safety features were unaccessible and not available including but not limited to turn signals and hazard lights stop working, the settings for autopilot and driving are gone, the suspension settings, the ability to turn on headlights manually, ability to manually lock and unlock the vehicle, navigation, A/C, sunroof controls, etc.”

“P85d lost power on road, pull over safely . With Tesla's latest firmware updat e0.167 pushed otu untested to all p85d cars, the car loses all power suddenly when driving. It leaves the drivers stranded in the middle of roads dangerously. Tesla is not issuing a recall, and is trying to suppress this and many many other quality and safety issues by limiting the information to its forums only, and sometimes removing those information to support its high quality image, and sustain its bubble stock valuation. More details here in this thread. Hope they don't remove the entire thread. …”

“This is regarding a 2014 Model S fully electric vehicle. Any reference to an 'engine' simply implies the motor. Accelerator pedal became unresponsive and abruptly lost drive power while going ~55mph on the highway. The PRND display on the display panel went red. Car was towed to the service center Immediately after this malfunction, I somehow cruised along towards the shoulder with just with brakes and hazard lights. Total loss of motor power caused vehicle to slow down and vehicles behind me had to slow down (and honk). …”

“The rear motor (drive unit) has gone out on this car twice in the last four years. I purchased it after it was last repaired. It most recently went out on 08/04/2023. When it went out two days ago it had less than 30,000 miles on it. This car has a motor on both the front and rear axles, so while the vehichle was still moving forward, if it slowed down at all that would engage the regenerative braking. …”