general problems of the 2014 Tesla Model S - part 2

108 problems related to electrical system have been reported for the 2014 Tesla Model S. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Tesla Model S based on all problems reported for the 2014 Model S.

36 Electrical System problem

Failure Date: 10/07/2020

Tesla cpu failure is causing car to have issues. Bluetooth will not connect, car will not unlock, lights do not work- either are stuck on or off, blinkers do not work, back up camera does not work, air conditioning is stuck on which drains battery, cannot charge the car when it is not responding as charging port will not unlock. Car has essentially turned into a brick with <60,000 miles. Very disappointed in Tesla. These happen both when vehicle is moving and stationary.

37 Electrical System problem

Failure Date: 09/09/2020

Manufactures known defective mcu 1 defective memory housed in daughterboard and screens leaking adhesive in the driver's instrument cluster and 17" screen on mcu, adhesive dripping down onto cabin area .

38 Electrical System problem

Failure Date: 08/05/2020

Mcu touchscreen failed. Vehicle was stationary. Turn signals and other functions quit working.

39 Electrical System problem

Failure Date: 08/03/2020

My automobile has become unresponsive. When I attempt to start it, the message "systems are powering up" appears but nothing happens. This has happened on several occasions and now 2 days in a row and am unable to drive the car as it does not allow me to. I have waited over 15 minutes with still no response. It had remained parked for 3 days before trying to operate it. I am unable to reset the power on the car since the media control screen stays black. The Tesla app will not connect to the car. The windows, lights, door locks still operate, but I am unable to shift the car into drive to get to a service center. I am told it will be $195 to diagnose. I have 102,132 miles. The issues started occurring approximately 50k miles after I purchased it. In February of this year, I replaced the 12v battery after a warning indication appeared and told me I needed to. At this time, there are no indications.

40 Electrical System problem

Failure Date: 08/01/2020

Media control unit mcu failure. No aeb (advanced emergency braking) no controlling suspension height no manual control of headlight lights no blinker sounds steering mode defaults to some setting (e. G. If I have it set to sport, during reboot of mcu is changes to standard or comfort, not sure but I can feel the steering wheel take less effort to turn than my normal sport mode) no hvac (heat, cool, vent) no defrosters no seat heaters no steering wheel heaters no radio/streaming no app connectivity to control the car no ability to see the car charge status from app.

41 Electrical System problem

Failure Date: 07/31/2020

Drove out of town and parked the vehicle in driveway for about 5 hours, when I retuned to drive it back (10 pm) center touch screen was blank. I noticed that there was loss of function of nearly everything in the vehicle. I could still drive it but with ability to use turn signal lights, or headlights (very dangerous drive at night). Steering wheel buttons, ac, audio, phone bluetooth, and all controls of the vehicle were completely lost. It was 90 degrees outside that night and had to drive without ac, I could not make or receive phone calls due to black screen, sun roof could not be opened. Basically the vehicle became a bare basic vehicle without any of the safety features or even the basic feature such as signal lights. I am not sure if there was an emergency if airbags would have responded either! the car felt just too scary to drive!! odometer would not count the miles too, odometer is lost and app shows the mileage from yesterday (even though I drove 50 miles on it to get home), I even notice battery started draining faster while I was driving it back home. . Performed soft and hard reset per Tesla website recommendations without ability to restore any of the functions or make the center screen display anything. I attempted connecting through the Tesla app, and although I was able to connect to the vehicle, the car would not respond to app for any of the controls, climate etc. Contacted Tesla next morning and they stated that since vehicle is out of warranty that I will have to bring it to service center or tow it if unsafe to drive and pay for repair to restore its functions. The small dash screen still was working, but continues to display a message to "wait while vehicle systems power up". It is completely an unsafe car at this time on every level.

42 Electrical System problem

Failure Date: 07/31/2020

Media control unit(mcu) failed due to design flaw of memory being overwritten until it hits a limit. Once the limit is hit, the mcu no longer works. The mcu controls the back up camera and turn signals. Both no longer work and I am not able to view the back up camera or signal lane changes or turns while driving.

43 Electrical System problem

Failure Date: 07/23/2020

My infotainment (center lcd panel) shut off without warning and could not be restarted while driving. This sudden failure took my attention away from the road and repeatedly attempting to restart the screen was also a hazard forcing me to pull to the side of the road but was still unable to restart the infotainment center. With the infotainment system down, the majority of the features in the vehicle are cut off from me. I later read that this is a common problem affecting Teslas built between 2013 and 2018.

44 Electrical System problem

Failure Date: 07/22/2020

Failure of touchscreen. Dashboard display at -5 brightness, could not see the information. No turn signals and no reverse camera. Loss of control to air/heating, sunroof, music, garage door control. Tesla remote diagnostics team determined the mcu had an internal fault and would need to be replaced.

45 Electrical System problem

Failure Date: 07/22/2020

Mcu 1 failure in an older Model S. Tesla recognized the issue and is now installing a better mcu. However, warranty repairs are being done with refurbished mcu 1 components.

46 Electrical System problem

Failure Date: 07/16/2020

My Tesla s has yet another defective mcu console ruined by excessive data communication by Tesla. . It is dangerous to drive because the car speed is extremely faint in the instrument window, and there is no sound when the turn signal is activated, no radio, no map, and no hvac control. I have to pay Tesla $1553. To replace it with a remanufactured unit - some other owner's ex-mcu? Tesla promotes this as a "Smart car. " without the mcu console, it s a dumb car.

47 Electrical System problem

Failure Date: 07/12/2020

Total loss of display in the middle console keeps going black, total loss of turn signals, suspension control, heater controls, DE fog and DE ice, no rear camera, no cruise control, high low beams,no ability to use fog lamps. Plus many more things too numerous to list. I took it to service dept and they did a temp fix for $150 but told me it will go out again and it did the very next morning. Something to do what's called the mcu memory failing. Its gone dark on several occasions many different dates. There is no way to know when it will do it again. Makes the vehicle in my estimation more likely to get into a crash.

48 Electrical System problem

Failure Date: 07/11/2020

The mcu (large touch screen control panel) has been rebooting randomly for years while driving renderimg some car functions non functional including turn signal. Today it turned off completely leaving the car drivable but handicapped and I am unsure if it safe to drive. I understand Tesla knows about the emmc failure that can cause this issue yet they don't warn customers about this potential issue especially when under warranty and when it could cause dangerous driving conditions. The least Tesla could do is tell customers about what dangers may be present and that some legal based functions of the vehicle like the turn signals will be inoperable. It's upsetting that Tesla knows about these issues and is not informing customers.

49 Electrical System problem

Failure Date: 07/09/2020

The mcu unit - media control unit - is failing. Signal light indicator does not make a sound, the warning sounds for being too close to an object are gone. Other warning beeps, chimes, bells, etc. Are gone. Some indicators on the display screen are inoperable. The touch screen does not respond to touch for some features/controls. All of the car's controls are on the touch screen. My car is only 6 years old. It is solid state circuitry. How can it fail ? my warranty had just expired. Of course. This is an electronics problem of a key component of the vehicle. I don't know if it is due to poor design or defective components but it is a serious enough problem that I felt I should report it.

50 Electrical System problem

Failure Date: 07/08/2020

See NHTSA action # 20010. Media control unit failed 7/8/2020 @ 5:04 pm when returning to the car after a brief stop, in a parking lot. Car took several minutes to "reboot" to drivability, but center screen is still down. Backup camera and blinkers (inside or outside, confirmed) are not working. Additional items down include defrosters, auto tilt mirrors for reversing, seat heaters are stuck on (from when I had last used them), sunroof won't open (it ignores steering wheel controls). Brake lights are still functional, so I drove it home. Called Tesla and was told that the replacement module is out of stock and is not expected for many weeks. In the meantime, the car is undrivable.

51 Electrical System problem

Failure Date: 07/03/2020

My mcu just went black and never came back on. It has been like this for 5 days. I am unable to charge the car, and no climate controls, and also no rear view camera. I have a service appointment in 2 weeks, and they refuse to upgraded the mcu1 to an mcu2 which will have less change of having this failure in the future.

52 Electrical System problem

Failure Date: 07/03/2020

Tesla mcu failing. No rear view camera. No turn signals and all display items on the center screen unavailable including climate control, when the mcu - media control unit freezes or goes black. I was having symptoms of imminent failure and I had the emmc chip replaced by a 3d party to insure I wouldn't get stuck.

53 Electrical System problem

Failure Date: 07/01/2020

Main screen turns off. The 17" center screen freezes and then turns off not letting use rest camera, door unlock, and hvac.

54 Electrical System problem

Failure Date: 07/01/2020

I was driving on the highway, and suddenly the main screen goes black, and the turn signals stop working and I had to use hand signals ( most of the ppl didn't understand them) and the ac system turned off ( I was driving with the kids in the car and until got home they were dehydrated, as it was over 100 degrees outside).

55 Electrical System problem

Failure Date: 07/01/2020

1. Replaced mcu, at my cost. Several weeks later a lesser expensive fix was announced. Several weeks after that announcement Tesla notified me that I may fall under an extended warranty for the replacement. It turns out that because my vehicle was over 100,000 miles at the time of replacement (114,000) it does not qualify for the extended warranty. I purchase the car as certified pre-owned from Tesla with 22,000 miles. My ownership miles was under 100,000 miles at the time of the replacement. Considering the failures of the mcu in older model vehicles, and a known problem, I would think I would be covered. 2. Door handles - all 4 door handles have been replaced at least twice since ownership. Again, a known issue in the design. All but one replacement were completed at no charge. The last replacement was done after 14 months from the previous replacement. Tesla only warranties for 1 year since replacement. I don't understand why something that is a known failure would be my responsiblity. 3. Tpms sensors - again, a known issue that the original sensors were a bad design. Tesla will only replace with the upgraded version, at my cost of around $1,000! I am forced to find a non-Tesla repair facility to replace the sensors, at a lower cost. Again, where is the accountability on Tesla to stand behind known issues.

56 Electrical System problem

Failure Date: 06/29/2020

Mcu unit has a design fly where it will be inoperable causing a safety issue.

57 Electrical System problem

Failure Date: 06/29/2020

Vehicle's mcu goes black and reboots when in flight. Loss of ability to control key vehicle features.

58 Electrical System problem

Failure Date: 06/25/2020

The video scrren (mcu) goes blank while driving and navigating and backing up. While backing into my garage tge screen went blank causing dangerous situation not seeing what was behind me. While navigating the screen went blank causing me to miss an exit on the freeway.

59 Electrical System problem

Failure Date: 06/25/2020

The mcu stopped working, I'm lead to believe based on forums I've read on, this is due to the emmc failing due to Tesla having a design flaw and also having excessive amount of unnecessary logging to the chip.

60 Electrical System problem

Failure Date: 06/24/2020

While stationary, just after getting into the car which in this car is how it turns on, mcu is failing due to excessive logging issue. Main screen goes black randomly. Lose control of major functions of car, including ac.

61 Electrical System problem

Failure Date: 06/24/2020

Screen blacked out and I lost signals and control.

62 Electrical System problem

Failure Date: 06/24/2020

Vehicles mcu (middle control unit) stopped working. Blinkers would not work, so I was unable to signal while driving. The rearview camera stopped working as well and the ac system was stuck on.

63 Electrical System problem

Failure Date: 06/23/2020

Screens go blank at times and in the middle of driving. Screen in picture is delaminating. This happens multiple times, not just a single occurrence.

64 Electrical System problem

Failure Date: 06/22/2020

My Tesla p85d year 2014 had the center console that controls all the navigation, heating, a/c, seat adjustments, music, charging, has gone bad and a lot of the blogs I read state this is due to a faulty flash memory with the multimedia control unit (mcu). The car is driveable but too many features that you depend on to drive are not operable due to the media console not being usable. The media console is just black and not able to be turned on.

65 Electrical System problem

Failure Date: 06/21/2020

I went to turn on my car in the morning and the mcu was showing a checker pattern of errors. As I drove the gps did not update my location. When I got back in the car the mcu was completely dead black. The car has already had the mcu replaced once in 2017, 3 years after delivery from Tesla. 3 years later it died again and I'm having to replace it out of warranty from Tesla. The bill is expected to be $2000 and the car is supposed to be in the service center for over a week.

66 Electrical System problem

Failure Date: 06/20/2020

The Tesla mcu1 is known to fail as highlighted by many respectable news agencies. There are even shops around the country specializing in this crazy repair that involves hacking the car. The mcu in my car is beginning to fail and will black out/freeze randomly. Basically the ideal use for it, is not to use it so it doesn't crash. When it does, I experience loss of audible and visual touchscreen features, such as infotainment, navigation, and web browsing, and loss of the rear-camera image display when in reverse gear. After several reboots, it does boot up, often wifi does not work, 3g connection does not work, maps take a long time to load as I am driving and navigating any of the options causes the unit to freeze. It takes additional reboots to resolve these issues. This is a big issue considering all lights, suspension features, ac and pretty much all aspects of the car are controlled from here. Even though the car is in warranty, Tesla's solution is to reset the car and wear the emmc more.

67 Electrical System problem

Failure Date: 06/15/2020

Touch screen interface to many controls does not power up for past 3 months since early June 2020. Turn signal does not operate, air conditioning controls not available, car charge rate is defaulted to 8 amps only - think this prevents road trips as charging would take full day to charge, waiting for repair. From Tesla for 3 months and finally have scheduled repair after multiple attempts to push this.

68 Electrical System problem

Failure Date: 06/15/2020

The contact owns a 2014 Tesla Model S. The contact stated the while operating the vehicle the center touch screen display was inoperable and would not illuminate. Due to the display failure the rear view camera, turn signal lights and high beam lights would not activate. Also while charging, the battery would over heat and the odor of burning plastic was present. The vehicle was taken to the local Tesla service center located at 210 andover st. Peabody MA. Who reprogrammed the system but the failures continued to occur. The contact was informed that the display system needed to be replaced but the parts were not available. The failure mileage was 160,000.

69 Electrical System problem

Failure Date: 06/15/2020

Due to the recent recall of the 2014 Tesla modal s computer screen. I have paid over $3,700 dollars to replace my screen and now Tesla wrote an email says they will not reimburse me for the screen. My Tesla modal s computer did not turn on and cannot control any function of the car.

70 Electrical System problem

Failure Date: 06/14/2020

Tesla Model S onboard memory has failed leading to no use of main interior screen. Out indicator lights and high beams do not work making it very unsafe to operate. This happens to many Tesla's with the mcu v1. The chip they use becomes corrupted and can cause all sorts of damage.



Model S Service Bulletins
Model S Defect Investigations