2018 Tesla Model X Problems

While driving on FSD (Full Self Driving) the vehicle was turning off the road into a parking lot and sped up and hit a vehicle while I was pressing the brake to the floor! I had to brace for impact when I hit the vehicle. I have requested the data and telemetry logs from Tesla. Everything was fine before the crash. Husband had a similar incident a few weeks ago where he was turning with FSD engaged and the vehicle stopped in the middle of the turn with a vehicle coming right at him, he had the gas floored to get out of the way but was completely stopped, could not move for 15 seconds or so.

During a recent incident where a tire issue caused damage to the wiring harness for the parking brake, resulting in a Parking Brake Failure notification on the screen, the vehicle would not stop or turn off. The vehicle displayed N for neutral on the dash, but the vehicle would drive forward unless the brake was depressed. In addition, we were unable to place the vehicle in Park, which meant that we were unable to shut it off. The only way to stop the vehicle from driving on its own and crashing into something was to place concrete blocks under the tires! Unplugging the 12v battery also had no effect! The vehicle kept driving as if it was in drive, and there as no way to stop it without placing the foot on the brake pedal the entire time or placing the blocks I referenced. The only way I was able to shut it off, was to pull what's known as the Fireman's Loop, which I'm guessing firemen pull in the case of an accident. I wasn't aware of this mechanism, and only learned of it after posting on numerous social media apps regarding this issue. This is a Major issue, as we are talking about a moving and unstoppable car! Tesla needs to build some mechanism that allows the car to be shut off by the driver or to override the screen and place the car in park. Pulling this firemans loop and unplugging the 12v battery, required me being in front of the vehicle, risking my life, as the vehicle could've easily moved if the concrete barriers didn't stop it, and also required me taking 30+ minutes to remove components from the Frunk, just to access these components!!

Control arm squeaks. Only way Tesla fixes is to replace. Smoke fix is a 2$ grease application to ball joint but they charge 1500$. I have done it 2 times and now again happened.

During a recent inspection, the Tesla service center (at Los Gatos) informed me that my Model X is missing a suspension bolt, and they stated they do not now why and how it's missing. It is a serious safety hazard, as it may affect handling, stability, and safety. They asked me to get it fixed before driving it. They told me that it's not covered by warranty or insurance, but couldn't explain why this happened.

For the past year, the battery will not hold it charge. I am getting about 30% of predicted mile range in colder weather and about 50% of predicted range in warmer weather. This makes the car unusable except for short trips and even then requires frequent charging. In addition, intermittantly, it will not charge quickly at a Supercharger. When others cars present are charging 180 range mph, I am charging at 20-50 range mph. I have had Tesla evaluate the issue and they claim there is nothing wrong but refused to share their evaluation with me. The rep would not give me any specific reason for my problem other than they found nothing wrong. I started the process before the end of the battery warranty (8 years) which has now expired. I feel Tesla service is committing systemic fraud in their approach to warrantied battery failure.

The 2018 Model X experienced a sudden and complete loss of power and became totally inaccessible. All doors and access points were inoperable and the vehicle could not be unlocked, disconnected, powered on, or placed into any service or tow mode. Emergency front-trunk release cables had to be used and external 12-volt power applied at the jump terminals to wake the vehicle. The inability to access the vehicle was unexpected and alarming. Children, pets, elderly, and others could have been inside of the vehicle. Thankfully, they were not. Tesla inspected the vehicle and stated the failure was related to the battery coolant heater. The failure resulted in a complete vehicle immobilization and access failure. I had previously experienced restart warnings on the dashboard, but I did not expect a total lockout and loss of access. The inability to access the vehicle was unexpected and alarming. It may be a known safety issue. It should be recalled. This condition presents a serious safety risk because occupants could be trapped inside the vehicle and the vehicle cannot be accessed or moved without external power. In extreme heat or cold, or in a medical or emergency situation involving a child or pet, this failure mode could create a life-threatening situation. Importantly, even after multiple requests, I have not received a copy of the diagnostic report, or anything other than informal emails or calls. Tesla has not provided information regarding this failure other than broad statements, and visuals of the location of the battery pack, in an attempt to deny warranty coverage. The Tesla reports a High Voltage System alert currently. The vehicle is subject to Tesla’s Battery and Drive Unit Limited Warranty. Tesla has stated that the failed component was the battery coolant heater, but has refused to cover the repair under warranty. Tesla confirmed the failure but has not provided the diagnostic report, fault codes, or vehicle logs supporting its determination.

The falcon doors on the model X, when it is a hot day, and the sun is hitting the door, these doors will not open under any circumstance, resulting in a major safety issue. should there be an accident, a fire or other issue where someone needs to exit the vehicle, they are simply not able to do so under any circumstance! This is a known problem with these vehicles, if the sun hits these doors or it’s a hot day. There are hundreds, if not thousands of posts about these doors, not opening when the sun is hitting the door for a prolonged period of time or the door gets hot. There needs to be a recall for this issue. From my research, seems that there’s some sort of sensor adhesive that comes loose or something similar to that. And either case this is a major safety issue, as it does not allow the passenger to exit the vehicle under any circumstance. Even holding the override button on the screen does not open the door. My kids have been stuck in this car on a repeated basis due to this issue of the door, not opening due to this failed sensor. Tesla is aware of this issue, and has never issued a recall, even though they know it affects all of the model X models

The Automated Emergency Brakes did not activate. This car hit the next car on the street. I was driving when I noticed the brake lights on the car in front of me, so I applied the brakes. Though it did not work, as this car is equipped with the Automated Emergency Brakes feature, it was expected that the car would activate the feature to stop to avoid impact and an accident. Which did not happen, and this car has a tremendous loss; the car in front also suffered a loss. The car manufacturer has given data in Excel files showing the events; it has no data at the time of the impact, but it has data well before and well after. Due to the failure of this important feature, the car has suffered a loss (potentially a total loss), the insurance process has been affected, and there has been a mental impact on my family members and me. Hence, requesting help in this regard.

Vehicle: 2018 Tesla Model X Recall Reference: Tesla eMMC Recall – NHTSA Campaign Number 21V-035 (Recall 21V035000) Defect Description: In March 2021, Tesla notified me by email of a recall involving failure of the eMMC memory chip in the Media Control Unit (MCU). This defect is known to cause loss of vehicle system functionality and safety-related features. Despite this notification, Tesla has refused to honor the recall and replace the eMMC when I brought my vehicle in for service. Current Vehicle Condition: My vehicle exhibits severe and worsening symptoms consistent with eMMC failure, including: System freezing and frequent unresponsiveness GPS extremely slow or nonfunctional Turn signal indicators intermittently fail Horn fails to operate approximately 95% of the time Vehicle reset/reboot does not work Touchscreen and vehicle controls are very slow or nonresponsive These issues occur regularly and without warning. Safety Risk: This defect creates a significant safety hazard. The failure of turn signals, horn, and system responsiveness increases the risk of accidents. The inability to reset or restore the system while driving further endangers occupants and other road users. Due to these failures, the vehicle is unsafe to operate. Manufacturer Response: Although Tesla issued a recall notice in March 2021, they have declined to perform the recall repair on my vehicle. No effective remedy has been provided, and the vehicle’s condition continues to deteriorate. Request for NHTSA Action: I am requesting that NHTSA investigate Tesla’s failure to honor Recall 21V-035 and require Tesla to provide the mandated repair. This unresolved defect affects safety-critical systems and presents an ongoing risk. When I went there last Dec 4 to get this repaired, they wanted me to upgrade and pay almost $2000. I am willing to pay half of the cost but not the entire amount.

The contact owns a 2018 Tesla Model X. The contact stated that while driving at an undisclosed speed, the steering wheel seized with the message “Steering Assist Reduced” message displayed. The contact stated that the steering wheel became difficult to turn. The vehicle was taken to the dealer, where it was diagnosed and determined that the steering rack had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 100,000.

The Automated Emergency Brakes did not activate. This car hit the next car on the street. I was driving when I noticed the brake lights on the car in front of me, so I applied the brakes. Though it did not work, as this car is equipped with the Automated Emergency Brakes feature, it was expected that the car would activate the feature to stop to avoid impact and an accident. Which did not happen, and this car has a tremendous loss; the car in front also suffered a loss. The car manufacturer has given data in Excel files showing the events; it has no data at the time of the impact, but it has data well before and well after. Due to the failure of this important feature, the car has suffered a loss (potentially a total loss), the insurance process has been affected, and there has been a mental impact on my family members and me. Hence, requesting help in this regard.

During a recent incident where a tire issue caused damage to the wiring harness for the parking brake, resulting in a Parking Brake Failure notification on the screen, the vehicle would not stop or turn off. The vehicle displayed N for neutral on the dash, but the vehicle would drive forward unless the brake was depressed. In addition, we were unable to place the vehicle in Park, which meant that we were unable to shut it off. The only way to stop the vehicle from driving on its own and crashing into something was to place concrete blocks under the tires! Unplugging the 12v battery also had no effect! The vehicle kept driving as if it was in drive, and there as no way to stop it without placing the foot on the brake pedal the entire time or placing the blocks I referenced. The only way I was able to shut it off, was to pull what's known as the Fireman's Loop, which I'm guessing firemen pull in the case of an accident. I wasn't aware of this mechanism, and only learned of it after posting on numerous social media apps regarding this issue. This is a Major issue, as we are talking about a moving and unstoppable car! Tesla needs to build some mechanism that allows the car to be shut off by the driver or to override the screen and place the car in park. Pulling this firemans loop and unplugging the 12v battery, required me being in front of the vehicle, risking my life, as the vehicle could've easily moved if the concrete barriers didn't stop it, and also required me taking 30+ minutes to remove components from the Frunk, just to access these components!!

On July 25, 2025 I was installing a toddlers car seat in the vehicles rear passenger seat. Upon clipping the secure straps onto the rear seat, I noticed the seat slid all the way to the front position - the seat was loose - sliding back and forth. Nothing appeared to be visually broken. I made an appointment with Tesla and they report that they “replaced an actuator” that had failed. The failure caused the entire rear seat to slide without warning and no way to secure the seat. Tesla does not consider this a safety issue. Tesla is charging $1800 for repairs. Tesla says the broken part is not available for inspection. Tesla seemed to indicate that a possible electrical component failed that resulted in this issue.

While driving on the freeway at 60 mph, the car's hood suddenly opened and struck the windshield, obstructing the driver's view completely. The car had just left a Tesla service center a few minutes earlier, and the incident occurred while driving on [XXX] North freeway near Dedham, MA. Incident occurred on [XXX] at [XXX]. Tesla service at Dedham, MA, accepted the vehicle for hood repair and mentioned its a service mistake. They did not mention any issues related to recall or software. Vehicle is still at Tesla service center at Dedham, MA, under repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The 2018 Model X experienced a sudden and complete loss of power and became totally inaccessible. All doors and access points were inoperable and the vehicle could not be unlocked, disconnected, powered on, or placed into any service or tow mode. Emergency front-trunk release cables had to be used and external 12-volt power applied at the jump terminals to wake the vehicle. The inability to access the vehicle was unexpected and alarming. Children, pets, elderly, and others could have been inside of the vehicle. Thankfully, they were not. Tesla inspected the vehicle and stated the failure was related to the battery coolant heater. The failure resulted in a complete vehicle immobilization and access failure. I had previously experienced restart warnings on the dashboard, but I did not expect a total lockout and loss of access. The inability to access the vehicle was unexpected and alarming. It may be a known safety issue. It should be recalled. This condition presents a serious safety risk because occupants could be trapped inside the vehicle and the vehicle cannot be accessed or moved without external power. In extreme heat or cold, or in a medical or emergency situation involving a child or pet, this failure mode could create a life-threatening situation. Importantly, even after multiple requests, I have not received a copy of the diagnostic report, or anything other than informal emails or calls. Tesla has not provided information regarding this failure other than broad statements, and visuals of the location of the battery pack, in an attempt to deny warranty coverage. The Tesla reports a High Voltage System alert currently. The vehicle is subject to Tesla’s Battery and Drive Unit Limited Warranty. Tesla has stated that the failed component was the battery coolant heater, but has refused to cover the repair under warranty. Tesla confirmed the failure but has not provided the diagnostic report, fault codes, or vehicle logs supporting its determination.

During a recent incident where a tire issue caused damage to the wiring harness for the parking brake, resulting in a Parking Brake Failure notification on the screen, the vehicle would not stop or turn off. The vehicle displayed N for neutral on the dash, but the vehicle would drive forward unless the brake was depressed. In addition, we were unable to place the vehicle in Park, which meant that we were unable to shut it off. The only way to stop the vehicle from driving on its own and crashing into something was to place concrete blocks under the tires! Unplugging the 12v battery also had no effect! The vehicle kept driving as if it was in drive, and there as no way to stop it without placing the foot on the brake pedal the entire time or placing the blocks I referenced. The only way I was able to shut it off, was to pull what's known as the Fireman's Loop, which I'm guessing firemen pull in the case of an accident. I wasn't aware of this mechanism, and only learned of it after posting on numerous social media apps regarding this issue. This is a Major issue, as we are talking about a moving and unstoppable car! Tesla needs to build some mechanism that allows the car to be shut off by the driver or to override the screen and place the car in park. Pulling this firemans loop and unplugging the 12v battery, required me being in front of the vehicle, risking my life, as the vehicle could've easily moved if the concrete barriers didn't stop it, and also required me taking 30+ minutes to remove components from the Frunk, just to access these components!!

‘safety restraint system issue’ error pops up when ever car is turned on was told that can cause airbag to not be deployed when needed.

System warning for the rear left safety restraint. Took it into Tesla and they charged me.

The Automated Emergency Brakes did not activate. This car hit the next car on the street. I was driving when I noticed the brake lights on the car in front of me, so I applied the brakes. Though it did not work, as this car is equipped with the Automated Emergency Brakes feature, it was expected that the car would activate the feature to stop to avoid impact and an accident. Which did not happen, and this car has a tremendous loss; the car in front also suffered a loss. The car manufacturer has given data in Excel files showing the events; it has no data at the time of the impact, but it has data well before and well after. Due to the failure of this important feature, the car has suffered a loss (potentially a total loss), the insurance process has been affected, and there has been a mental impact on my family members and me. Hence, requesting help in this regard.

‘safety restraint system issue’ error pops up when ever car is turned on was told that can cause airbag to not be deployed when needed.

I am writing to you once again to emphasize and provide additional details regarding the critical safety issue I previously addressed concerning the Tesla Model X vehicles, which is similarly affecting Tesla Model S models. My personal experience underscores the severity of this problem: I have had to replace five tires due to accelerated inner wall wear. This specific wear pattern is a direct result of improper camber alignment, an issue that Tesla has continuously refused to rectify. This problem is not isolated to my vehicle alone. A growing number of Tesla Model X and Model S owners have reported similar experiences, indicating a widespread and systemic issue. The accelerated inner wall tire wear poses significant safety risks, as it can lead to unexpected and dangerous tire failures on the road. Despite the clear evidence and numerous complaints from Tesla owners, Tesla has consistently declined to address this issue adequately. It appears that the company’s reluctance is rooted in the fact that proper repair or recall to fix the camber alignment is not cost-effective from their perspective. However, this cost-cutting measure is putting drivers and passengers at risk. Given the scale and gravity of this issue, I urge the National Highway Safety Institute to take immediate action. It is essential to investigate these recurring problems with both the Tesla Model X and Model S models. The safety of Tesla drivers, passengers, and the general public is at stake, and a thorough investigation could compel Tesla to take the necessary corrective actions. Thank you for your attention to this urgent safety matter. I trust that the National Highway Safety Institute will act promptly to ensure automotive safety and hold manufacturers accountable for their vehicles’ reliability and safety.

TIRES ARE SEPARATING INTERNALLY AFTER 27K MILES. CONTINENTAL TIRES. THIS TIRE SHOULD BE GOOD FOR 45K MILES. IT HAS NO OTHER PROBLEMS. TESLA SAYS THEY HAVE LOTS OF PROBLEMS WITH THOSE TIRES. WHEN THE TIRE HAS PROBLEMS IT FAULTS ALL THE SAFETY ISSUES OF CAR AND COMPUTER. BIG PROBLEM. ONLY ANSWER IS TO REPLACE ALL OF TIRES AND SEE WHAT WORKS.

The contact owns a 2018 Tesla Model X equipped with Lexani Tires, Tire Line: LX-20 Performance, Tire Size: 265/45/R20, DOT Number: 1TBA7B95C3724. The contact stated that while driving at an undisclosed speed, there was a loud sound coming from the front of the vehicle. After the vehicle was inspected, the contact observed tread separation on the driver’s side rear tire, and that the top tread portion of the tire was separating. Due to the tire failure, the vehicle became inoperable. Additionally, the transmission failed to properly shift into park(P), and there was a wiring harness failure following the failure. Due to the failure the vehicle was not drivable and required to be towed. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The contact stated that the failure was associated with NHTSA Campaign Number: 23T009000 (TIRES). The tire was a replacement tire. The tire failure mileage was approximately 8,000. The vehicle failure mileage was approximately 78,886.

265 45R 20 As I was driving down the road, I heard a flapping sound. I couldn't pull over right away, as I was in the left lane, and there was a lot of traffic. I pulled over, but I couldn't put the vehicle into park or turn it off! After a family member showed up. i had them put their foot on the brake, while I investigated the issue. I noticed a long piece of tread that was handing from the inner tread. Then I noticed that an entire line of tread was missing as well. The hanging tread cut through the protective lining for the wiring of the vehicle. Then it tore up some wires, which I later came to realize were the brake wires. This is a Tesla, and I was not able to put it into park. The car is is still in drive, with no way of putting it into park or turning it off! This tire has caused significant damage to my rims and vehicle!

Car lost power on the highway suddenly while driving at highway speeds and would not start after we pulled over off the highway. Took a picture of all the alerts. This is the second catastrophic event with this vehicle due to the HV battery. Event: 11:32am November 27,2025. Was needed to be towed to service center. BMS u008 error displayed on screen among others. No alerts until the immediate loss of power. After the Tesla service center ran diagnostics they discovered that the HV battery failed and needed to be replaced. This put my entire family (wife and two children) at risk to a major accident again due to the sudden deceleration of the vehicle and being rear ended by another vehicle on the highway (I was traveling at highway speeds when the failure occurred) or being unable to stop suddenly as the braking system was not effective / difficult to press the brake pedal. I used my Meta Ray Ban Smart Glasses to take a photo hands free using a voice command to capture my speed and the error that displayed when I lost power on the highway and the amount of traffic around me.

Car lost power on the highway suddenly and would not start after and we pulled over on the side of the highway. Took a picture of all the alerts. Heard a loud thunk noise when the car lost power, did not hit anything in the road. Event: 2:21pm March 31,2024. Was needed to be towed to service center. BMS u008 error displayed on screen among others. No alerts until the immediate loss of power. _ _ limpMode Acceleration and top speed reduced Performance may be restored on next drive After the Tesla service center ran diagnostics they discovered that the HV battery failed and needed to be replaced. This put my entire family (wife and two children) at risk to a major accident either due to the sudden deceleration of the vehicle and being rear ended by another vehicle on the highway (I was traveling at highway speeds when the failure occured).

Tesla wiper stopped working during drive, rendering it impossible to view the outside. I had to pull over on the side of the road and shut the car down. After rebooting the car, the driver side wipers came back functional, the passenger side is non operable. This happened while driving, while there was moderate amount of rainfall - thereby creating a totally unsafe condition for myself and other people on the freeway. When I contacted Tesla for service, they have given me an appointment 1 month from today to rectify the problem - this is needless to say unacceptable and the expectation that I continue to drive a vehicle without functional wipers goes against current FMVSS regulations that I am aware of.

HELLO, I THOUGHT IT WOULD BE BEST TO SEND MY LATEST SERVICE NOTE ABOUT MY CAR. TESLA CONTINUES TO AVOID FIXING OR ADDRESSING THE PROBLEM. WE ARE NOT SURE WHERE ELSE TO TURN AND SEE SO MANY OTHER COMPLAINTS ABOUT THIS ONLINE. I FINALLY DECIDED IT WAS TIME TO REACH OUT TO YOU. THANK YOU IN ADVANCE FOR ANY ASSISTANCE OR GUIDANCE YOU CAN PROVIDE. ' HI THERE ARE NO TIME STAMPS, AS IT HAS FOR THE PAST 6 MONTHS, THE SCREEN IS PERPETUALLY SLOW. I ASSUME IT IS IN THE RECORDS, WE HAVE REACHED OUT TO SERVICE MANY TIMES. WE'VE HAD THE SCREEN REPLACED, WE'VE CLEARED OUT THE MEMORY, GONE THROUGH REBOOTS AND WE STILL HAVE ISSUES. WE CAN RARELY GET TO OUR REVERSE CAMERA IN A TIMELY MANNER, AND ALL FEATURES ACCESSIBLE VIA THE TOUCHSCREEN ARE UNUSABLE. OUR VEHICLE IS NO LONGER SAFE TO DRIVE. WE'VE RECENTLY GONE ONLINE AND RECOGNIZE THAT WE ARE HAVING THE EXACT SAME ISSUE AS OTHER VEHICLES. WE'VE GONE FROM THE BIGGEST TESLA FAN AND TURNED OUT 50+ PEOPLE TO THE VEHICLE, TO HAVE LOST FAITH IN THE BRAND. ESPECIALLY WITH THE SAFETY ISSUES THIS IS CAUSING US. WE HAVE GONE THROUGH MONTHS OR TROUBLESHOOTING AND REPAIRS AND IT IS STILL NOT RESOLVED. WHAT DO YOU SUGGEST FOR OUR PATH FORWARD? HOW DO WE GET THIS IN FRONT OF TESLA'S LEADERSHIP TEAM?' LEE SCHOR

The contact owns a 2018 Tesla Model X. The contact stated that while driving downhill at approximately 40 MPH, the vehicle suddenly decelerated and stalled. The contact was unable to restart the vehicle. The suspension warning light was illuminated. The vehicle was towed to the local service center and diagnosed with engine failure. The vehicle was not yet repaired. The manufacturer was not contacted. The failure mileage was 45,000.

TESLA MODEL X DIES TWO TIMES. 1) AT APX 1K MILES (WITHIN 3 MONTHS OF NEW PURCHASE OF NEW VEHICLE, 1ST OWNER), IT DIED ON FREEWAY WITH NO POWER AND STOPPED. DUE TO SPACING FROM THE REAR CARD, NO ACCIDENT OCCURRED AND HENCE NO FATALITY. TESLA SERVICE CENTER FOUND NOTHING WITH THIS ISSUE. NO RESOLUTION ON DIAGNOSIS AND OR DID NOT CARE SAFETY OF THE DRIVER AND PASSENGERS. 2) AT 9K MILES IDENTICAL ISSUE BUT WITH AN ADDITIONAL ISSUE OF MODEL X GOING IN FORWARD DIRECTIONS WHEN IT SHOWED REVERS ON THE INSTRUMENT PANEL. EVERYTHING IN CAR WAS FROZEN ONLY OPTION WAS FORWARD DIRECTION AT LOW SPEED BUT WITH REVERSE MODE SIGN!! I HAD NOT OTHER CONTROL OVER THE TESLA MODEL X. I HAVE TAKEN VIDEO AT THIS TIME FOR AN EVIDENCE. TESLA STATES THAT THEY DID NOT FIND ANY ISSUE AND DOWN LOADED DISPLAY DRIVER AGAIN!! I FIND IT AN EXCUSE AND TESLA DOES NOT UNDERSTAND SERIOUSNESS IN SAFETY ISSUE. ME AND FAMILY IS AFRAID TO DRIVE THIS CAR AFTER TWO INCIDENTS.

After the latest software update, the icons to show your headlights are on and high beams are active are now blocked in the top left corner of the dash. There's no seating position possible that the steering wheel doesn't block this critical information.

I AM FILING A COMPLAINT AGAINST TESLA REGARDING THE MCU INFOTAINMENT ON THE MODEL X. MY VEHICLE IS 2 YEARS OLD AND BEGAN TO SUFFER MCU FAILURE AFTER UPGRADING TO TESLA'S HW3. THE MCU FAILURES HAS RESULTED IN SEVERE LAG, LOW VEHICLE STARTUP. VEHICLE START UP HAS TAKEN ANYWHERE FROM 10 MINUTES TO 20. RECENTLY, A FAMILY MEMBER WAS REQUIRED TO BE DRIVEN TO THE HOSPITAL. DUE TO THE MCU CAUSING MY BEHAVE SLOWLY, 911 WAS REQUIRED TO BE CALLED FOR AN AMBULANCE. THE MCU FAILURE IS SEVERELY EFFECTING MEDICAL EMERGENCIES. TESLA SHOULD UPGRADE ALL MCU 1 VEHICLES TO THE MCU 2 FOR FREE. .