Wiper problems of the 2014 Tesla Model S

I am the current owner of a 2014 Tesla Model S equipped with mcu1. While driving, including at freeway speeds, the center touchscreen has rebooted unexpectedly, showing only the Tesla logo before recovering. During these reboots, critical vehicle functions are unavailable, including the rearview camera, hvac/defrost controls, and other essential features. This failure matches the exact safety defect described in NHTSA recall 21v-035 related to the mcu/emmc failure. I reported this safety issue to Tesla service and provided photo evidence of the screen rebooting while driving. Tesla has refused to address this as a recall or safety repair. Tesla claims the recall was previously completed under a prior owner but refuses to provide any documentation proving that the recall repair was actually performed, citing prior owner privacy. Tesla has further stated that diagnosis of this active safety defect would be customer-paid due to the basic warranty being expired and has indicated that the only path forward is a paid infotainment upgrade. Tesla is effectively requiring payment to diagnose and resolve a known safety defect. As the safety defect is actively occurring while driving and Tesla has marked the recall as complete without providing proof or correcting the issue, I am requesting NHTSA review whether Tesla is improperly closing out recalls without ensuring the defect has been remedied and whether charging customers to diagnose known safety defects is appropriate. After entering my VIN into NHTSA’s recall lookup, NHTSA shows recall 21v-035 (mcu/emmc failure) as recall incomplete for my vehicle. This directly contradicts Tesla’s claim that the recall was previously completed. Tesla has refused to provide documentation and is requiring paid diagnosis and a paid infotainment upgrade despite the recall being listed by NHTSA as unresolved.

The main touchscreen (mcu1) and instrument cluster on my 2014 Tesla Model S frequently freeze, reboot, or go blank while driving. When this happens, I lose access to defrost, turn signals, backup camera, and speed display. I contacted Tesla service, but they refused to repair or replace the unit under recall ea20-003 or the extended warranty, even though the symptoms match the known emmc 8gb memory failure. The black screen and frozen instrument cluster create a clear safety risk. Tesla should cover this issue under the recall or provide an equivalent mcu2 replacement if mcu1 parts are unavailable.

Tesla has, by design, altered a safety feature in existing cars (via a software update) that decreases safety when defogging is needed. When I purchased my 2014 Tesla Model S, the defog could be turned on or off with the press of a button that was always visible on the touchscreen. Recently, Tesla made a major change to the user interface (version 11), that cannot be reverted, which removed the defog button. It now takes about 4-7 steps to activate and then turn off the defog. The new system also requires viewing pop-up window(s) while driving. Now, when you notice visibility is decreasing due to a fogged up windshield, you have to press the temperature (e. G. "70") twice, which brings up the full climate control window (if you press slightly high/low, a "climate popup" instead appears, with button located in different locations). You then have to scan for the defog button and press it. To turn it off, if it has been less than 10 seconds since you turned it on (often all you need), the window will still be there, and you can press the "climate off" button to turn it off. After 10 seconds, you have to repeat the same 2-3 steps used to turn it on. However, if the climate popup appears rather than the full window, you need to start over again to turn the climate control off (otherwise, a bug causes the climate control to stay on when you turn the defog off). A new version (not available for my car) reportedly has a workaround, but the defog button needs to have a permanent location on the screen like before, by default. My concern is that this software update will get people into (or has gotten people into) "distracted driving" accidents as they have to look at the screen about 4-7 times while driving, rather than the minimal 2 times that the old user interface allowed.

The contact owns a 2014 Tesla Model S. The contact received notification of NHTSA campaign number: 21v035000 (back over prevention, visibility, exterior lighting) however, the part to do the recall repair was unavailable. The vehicle was taken to Tesla (5544 okeechobee blvd, west palm beach, FL 33417) where it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The media control unit (mcu) failed - this control unit should not be a consumable or wear part - when it fails the turn signals do not operate, the windshield defogger cannot be operated, and many other critical safety systems impacted - the mcu has been acting up and not normal for past 9 -12 months then finally failed completely 07/27/20.

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.

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.

When starting my vehicle, the vehicle's center console screen did not power on. The instrument cluster (behind steering wheel) did power on, but the vehicle was very slow (about 2 minutes) before it could be put into "drive" (the instrument cluster said that vehicle was powering up). I then attempted to restart the center console screen (mcu) manually (by pressing both buttons on steering wheel for 20 seconds), but nothing happened. I began driving, and noticed several functions were not working: when indicating turn signals, there was no sound, and using a large glass window to verify, the exterior turn signals were not lighting up. The rear view camera and parking sensors would not activate when car was in "reverse" gear. Headlights would turn on automatically when it was dark, but I had no daytime running lights (also verified with glass window). I could also not manually turn headlights / day time running lights on or off. The climate was off, and could not be controlled. Charging was limited, the vehicle would charge but a much slower rate than usual (the instrument cluster said it was charging at only 8 / 40 amps 240v). I continued to drive the vehicle for a week, for short distances, and the vehicle remained in the same state. Several months prior, I brought my vehicle to Tesla for service, because of constant restarts of mcu every time vehicle was started, after a software update. I was told to update to next available version, which did resolve the issue. After further research, I discovered this is the first symptom of mcu failure, and I would experience frequent restarts of mcu while driving afterwards (which I did) until the unit would fail entirely (which it also did). I am surprised Tesla did not warn me of any of these things when I brought the vehicle in for service, instead waiting until vehicle became unsafe to drive.

There is a known issue with Tesla media control unit (mcu) dead or won't turn on due to poor design of the emmc memories. The unit eventually dies once the memories are full and the unit won't turn on anymore. Since this mcu is the heart of the Tesla vehicle, all the safety features will be disable like collision sensors, hazard alert/notification, unlock the door/windows from the inside, most of the gauges on the dashboard are disable, even the lane turn signals are disable and the backup camera. My unit went out since may 2020, Tesla will not cover the defected unit, it they will charge me over $1700 to replaced a refurbished one. This is the 3rd time they reschedule my repair since they claim they don't have all the parts in stock. I've been driving the car with a dead mcu for almost 3 months. It is very unsafe when I drive the disable car on the road.

On may 19th, I attempted to start the car but found that the main central touchscreen would not turn on. Multiple attempts to start, including all available reboot options as instructed by Tesla tech support via phone failed to restart the screen. Because service had to be performed at the dealership in atlanta, I was forced to drive the vehicle without the touchscreen. While basic functions were available, the loss of the touchscreen created a significant safety issue. I had to drive roughly 75 miles on the interstate during a heavy rainstorm. The loss of touchscreen meant I had no climate control--no a/c or defrost functions--so visibility was greatly impaired and I was reduced to periodically (and dangerously) wiping the windshield with a towel to maintain visibility. There were multiple other impacts, including loss of all audio and bluetooth, navigation, and I would worry that some of the electronic safety systems like collision avoidance might have been affected. If this had happened in winter during a snowstorm, the impact could have been even more dangerous. The problem turns out to be well known by Tesla. It was a defective media control unit. This unit uses a flash memory chip, hard-soldered to the circuit board and thus not replaceable without replacing the entire board. The memory chip has a limited number of read-write cycles, and due to the Tesla's programming, data are constantly written to the chip daily (and this is not a user-defeatable option). Replacement was done by the dealer, for a cost totaling 1868. 07, not covered by any type of warranty.

When I went to start the car the central touchscreen failed. Could not control the lights, a/c, heating, could not recharge the car. Tesla charged me out of warranty over $2000 to replace the touchscreen with a refurbished one. They refused to give the old part to me even though this was replaced in nevada where the law states that they have to give the old parts back to the owner. I had to pay them another $1000 to get the part back as it contained so much private information.

Vehicles media control unit (mcu) has a known and well-publicized defect caused by over-logging on the emmc chip. This defect causes the mcu to glitch, reboot and fail eliminating the ability to control both safety and convenience features including climate control, defroster, gps, audible safety warnings and other systems. Vehicle can also stop charging. This is a well-documented design flaw that Tesla is well aware of (simply google Tesla mcu failure) but refuses to cover out of warranty. The most recent "fix" via an over the air update simply delays the issue until vehicle is out of warranty but based on current evidence this defect will effect 100% of cars, both Model S and x, made between 2012 and early 2018.

My car experienced the issues described in NHTSA action number pe20010 with a premature mcu failure due to the emmc card failing. This emmc card has been found to fail too quickly due to Tesla allowing debug logging to the emmc card that is not needed for normal vehicle users. This excess logging was confirmed by elon musk on October 12 2019 https://twitter. Com/wk057/status/1211704973970550785. This expensive fix after failure had to be repaired out of warranty for a large cost. This failure causes the rear view camera to fail to work, the climate control to fail to work meaning that defrosting does not work causing potential vehicle issues, and potential slow charging of the car. The car also takes about 30 seconds to a minute to get out of park while the vehicle subsystems "fail" the mcu also causing a safety issue if the driver needs to get out of a troubling situation quickly.

My emmc chip failed in mcu when vehicle was five years old with less than sixty thousands miles. No rear view camera, no accessories are working, no ac, touch screen went black. With 'pin to drive' activated car becomes a brick: you can't enter pin because screen doesn't work - can't start/drive. Replacement with remanufactured unit (not even new) cost $2000!!!.

I have owned this vehicle since Dec 2014. I have replaced 2 windshields and had 2 other rock-chips filled. I have seen numerous things on Tesla blogs regarding multiple windshield cracks & chips from other owners. I just had one today due to a small rock where I was 2 car lengths back on the interstate. I recall only 2 other windshield repair/replacements on my cars since 2001.