MCU1 FAILURE. NOT ABLE TO HAVE ACCESS TO CONTROL PANEL FOR AC, POWER CHARGING, MAIN CONTOL SCREEN IS BLACK AND UNRESPONSIVE
NHTSA ODI 11342524
Home · 2016 Tesla Model S P90d · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
137 of 604 complaints match · Electrical system · clear filters · page 4 of 6
MCU1 FAILURE. NOT ABLE TO HAVE ACCESS TO CONTROL PANEL FOR AC, POWER CHARGING, MAIN CONTOL SCREEN IS BLACK AND UNRESPONSIVE
NHTSA ODI 11342524
MAIN CONTROL SCREEN ROUTINELY WENT BLACK. RENDERS THE AC AND OTHER CRITICAL VEHICLE CONTROLS USELESS. THIS IS A KNOWN FAILURE FOR MCU1. THIS HAPPENED MOSTLY WHILE DRIVING. SCREEN WAS REPLACED BY TESLA WITH REFURBISHED MODEL WHICH WILL FAIL THE SAME WAY. RATHER THAN REPLACING WITH MCU2 WHICH DOES NOT FAIL IN THIS MANNER.
NHTSA ODI 11342284
MCU1 SCREEN CONSTANTLY REBOOTS TAKING AWAY ALL CONTROLS FROM THE DRIVER. HAPPENS MULTIPLE TIMES. WHEN SCREEN BLACKS OUT IT WILL LAST HOURS OR DAYS AND YOU ARE UNABLE TO CONTROL ANYTHING INSIDE THE CAR AS IT IS THE MAIN UNIT THAT CONTROLS ALL ITEMS INSIDE THE CAR.
NHTSA ODI 11342295
THE MAIN SCREEN ON MY 2016 TESLA MODEL S HAS GONE OUT AND I AM BEING TOLD IN HIS A KNOWN BAD MCU ISSUE. MY CAR IS 52 MONTHS OLD WITH 50,361 MILES. THIS NEEDS TO BE DECLARED A DEFECT SO TESLA IS RESPONSIBLE FOR FIXING THIS ISSUE. I HAVE BEEN TOLD THE REPAIR IS OVER $2,000.*DT CONSUMER STATED TELSA REFUSES TO REPAIR THE VEHICLE UNDER WARRANTY.*JB
NHTSA ODI 11341898
TL* THE CONTACT OWNS A 2016 TESLA MODEL S. THE CONTACT STATED WHILE VEHICLE WAS AT A STAND STILL, THE VEHICLE FAILED TO START-UP DUE TO THE MEDIA CONTROL UNIT BEING INOPERABLE. THE FAILURE CAUSED THE VEHICLE CHARGING TO BE SLOW. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE RESUMED NORMAL OPERATIONS AFTER 5 MINUTES. THE VEHICLE WAS TAKEN TO TESLA LOCATED AT 5544 OKEECHOBEE BLVD, WEST PALM BEACH, FL 33417, WHERE THE VEHICLE WAS DIAGNOSED AND THE CONTACT WAS INFORMED THAT THE MEDIA CONTROL UNIT NEEDED TO BE REPLACED. THE FAILURE RECURRED. AN EMAIL WAS SENT TO THE MANUFACTURER HOWEVER, THERE WAS NO RESPONSE. THE FAILURE MILEAGE WAS APPROXIMATELY 38,000. *LN*JB
NHTSA ODI 11341311
THE MAIN COMPUTER TURNS RIGHT OFF A COUPLE TIMES A DAY. WHEN THIS HAPPENS WHILE DRIVING, MOST SAFETY FEATURES ARE DISABLED AND THE CARS ELECTRONIC STOP WORKING. THE CPU IS KNOWN TO HAVE ISSUES BECAUSE A CHIP INSIDE GETS OVERLOADED AND DOES NOT CLEAR ITSELF PROPERLY. A RECALL SHOULD BE HAD TO REPLACE THIS CHIP THAT DOES NOT REMOVE THE CASHE PROPERLY.
NHTSA ODI 11341047
MCU FAILURE CAUSING NO A/C, AND CAUSING NON CRITICAL ELECTRONICS TO BECOME INOPERATIVE DUE TO DESIGN DEFECT
NHTSA ODI 11341073
CENTRAL TOUCH SCREEN UNIT ALSO KNOWN AS MCU1 THAT CONTROLS MOST OF THE VEHICLE'S FUNCTIONS IS NOT WORKING PROPERLY. RESPONSE TIME IS VERY SLOW, IT LAGS AND RAMDOMLY RESTARTS WHEN THE VEHICLE IS IN MOTION.
NHTSA ODI 11340796
MAIN DISPLAY FAILURE. UNABLE TO VISUALIZE CONTROLS. TEMP OVER 100 DEGREES IN CAR. COULD NOT DEFOG WINDOWS. UNABLE TO OUT CAR IN DRIVE OR REVERSE
NHTSA ODI 11340545
MCU COMPUTER IS BLACKING OUT AND REQUIRES CONSTANT RESETS. CONNECTION TO THE APP IS SPOTY. COMPUTER SHOWING SIGNS IF NOT WORKING PROPERLY. REPORTED TO TESLA. WAS TOLD THEY CLEARED MY MEMORY AND THEY ARE 'DIVERTING MY CONCERNS'
NHTSA ODI 11340760
TESLA MCU (MEDIA CONTROL UNIT) HAS WELL KNOWN AND DOCUMENTED EMMC CHIP THAT WILL FAIL ON ALL MODEL S AND X CARS FROM 2012 TO SUMMER 2018. THIS WAS A RESULT OF TESLA ENGINEERING WRITING THEIR LOGS TO THE EMMC WHICH HAS LIMITED NUMBER OF WRITE CYCLES, TESLA HAS SINCE RESOLVED WHERE LOGS ARE WRITTEN BUT THE DAMAGE HAS BEEN DONE. TESLA REFUSES TO ACCEPT THIS MISTAKE AND WILL CHARGE USERS $1300+ TO REPLACE. WHEN THIS ISSUE OCCURS THE FOLLOWING SAFETY ISSUES HAPPEN BLINKERS DO NOT WORK. DRIVE AFTER A 30 SECOND TIMEOUT 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 TRIP A/B PROFILES USER SETTINGS HOMELINK BLUETOOTH PAIRINGS NO REAR VIEW CAMERA THIS ISSUES HAPPENING TO ALL MODELS WORLD WIDE REFERENCE THIS POST TO SEE THE HUNDREDS OF USERS THAT ARE AFFECTED BY THIS AND FORCE TO SEEK ALTERNATIVE METHODS OF REPAIR THAT IS NOT TESLA APPROVED. AT WHICH AT ANY POINT TESLA COULD REMOVE FEATURES FROM CARS FOR NOT USING ONE OF THEIR APPROVED SERVICE CENTERS. WHICH APPOINTMENTS ARE OVER ONE MONTH OUT, FORCING MOST USERS TO DRIVE THEIR CAR IN UNSAFE MANORS
NHTSA ODI 11340403
MCU DIED.
NHTSA ODI 11340289
MCU1 COMPUTER FAILED. 2016 MODEL S 85D. REAR CAMERA,AC,BLINKERS,AND MANY OTHER THINGS DON'T WORK. CAR IS DANGEROUS TO DRIVE. HAPPENED OVER NIGHT AND I HAVE NO OTHER CHOICE TO DRIVE IT.
NHTSA ODI 11339647
THE WHOLE SCREEN IN THE CAR IS BLACK - CANT TURN ON AC, MUSIC, SUNROOF, OR BACK UP CAMERA. LOSS OF REAR AND FRONT VIEW CAMERA
NHTSA ODI 11339761
MEDIA CONTROL UNIT SCREEN CYCLES ON AND OFF WHILE DRIVING, CAUSING A TOTAL LOSS OF CRITICAL SAFETY CONTROLS INCLUDING LIGHTING, DEFROSTING, AND REVERSE CAMERA CAPABILITIES. TESLA RECORDED THIS COMPLAINT PREVIOUSLY AS A COSMETIC ISSUE AND AGREED TO FIX UNDER WARRANTY, ONLY TO LATER RETRACT.
NHTSA ODI 11339787
MCU FAILURE WHEN MY CAR JUST RAN OUT OF WARRANTY. I REPORTED ISSUE WITH CAR COMPUTER BOOTING WHEN CAR WAS IN WARRANTY LAST YEAR: THE POWER UP TIME SEEMS LESS RESPONSIVE, THE TOUCHSCREEN BECAME LESS RESPONSIVE AND WOULD FREEZE AT TIME. TESLA SERVICE CENTER DID A "BANDAID" FIX AT THE TIME. MY MCU COMPLETE FAILURE NOW, WITH NO CENTER SCREEN, NO REAR CAMERA, NO SIGNAL LIGHTS WHICH MAKE IT EXTREMELY UNSAFE TO DRIVE ON THE FREEWAY. AFTER WAITING FOR APPOINTMENT FOR 3 WEEKS WHILE I HAVE BEEN DRIVING MY WIFE'S CAR TO WORK, I BROUGHT MY CAR TO TESLA SERVICE CENTER, TOLD OUT OF WARRANTY, AND ALSO TOLD MCU PART IN BACKORDER AND NOT AVAILABLE, WHILE TESLA IS AWARE OF THIS ISSUE (THEY SENT ME AN EMAIL LAST WEEK TO AUTHORIZE A MCU REPLACEMENT). I BELIEVE THIS IS A DESIGN FAULT OF THE CAR THAT THIS MCU SHOULD BE RECALL AND REPLACE, AS I HAVE READ TESLA IS AWARE OF THIS AND UPGRADED A NEW MCU SINCE 2018.
NHTSA ODI 11339537
MY MCU FAILED WHICH CAUSED A SERIES OF SAFETY ISSUES. THE BACKUP CAMERA NO LONGER WORKS. I CAN NOT CONTROL EXTERIOR LIGHTS. I CANNOT USE THE FRONT OR REAR DEFROSTER WHICH IS PROBLEMATIC SINCE THE AC IS STUCK ON THE ON POSITION WHICH CAUSES CONDENSATION TO FORM ON THE WINDSHIELD, BUT WITHOUT DEFROST CONTROL I CANNOT EFFECTIVELY CLEAR THE WINDOW. IN ADDITIONAL ALL SOUNDS ARE DISABLED WHICH MEANS SAFETY SYSTEMS SUCH AS TURN SIGNALS AND OTHER WARNINGS SUCH AS FORWARD COLLISION WARNING DO NOT WORK NOR CAN THESE SYSTEMS BE ADJUSTED.
NHTSA ODI 11338958
PLEASE ADD THIS INCIDENT TO YOUR TESLA BATTERY FIRES INVESTIGATION. I HAVE USED THE VIN FROM ANOTHER WRECKED TESLA SINCE I DO NOT HAVE THE VIN FOR THE TESLA WHICH BURNED TO A CRISP IN THIS INCIDENT. HERE IS A REPORT AND VIDEO FROM THE LOCAL FIRE DEPARTMENT HTTPS://WWW.INSTAGRAM.COM/TV/CCZTAHGHCRU/?IGSHID=1DGYLUPMY80I0 HTTPS://WWW.YOUTUBE.COM/WATCH?V=MNTUZBIOFTY IT IS REPORTED THAT THE CAR WAS PLUGGED IN AND RECHARGING IN THE GARAGE WHEN IT IGNITED. THE FIRE IS FEROCIOUS AND CONTINUES TO REIGNITE EVEN WHEN THE FIREFIGHTERS ARE BLASTING IT WITH WATER. THIS FIRE COULD EASILY HAVE KILLED AN ENTIRE FAMILY. PLEASE SPEED UP YOUR INVESTIGATION INTO THESE DEADLY TESLA CARS. THANK YOU [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).”
NHTSA ODI 11338714
CENTER CONTROL SCREEN WENT DEAD. VEHICLE WAS PARKED IN PARKING LOT WHEN FAILURE OCCURRED.
NHTSA ODI 11338351
THE CENTER CONSOLE ON OUR CAR DIED 4 YEARS AND ONE MONTH AFTER PURCHASE (ONE MONTH OUT OF WARRANTY). THE CAR CANNOT BE DRIVEN. FORTUNATELY THE CAR IS IN THE GARAGE; WE HAVE HAD THE CONSOLE DIE PREVIOUSLY DURING DRIVING, WHICH IS SUPER SCARY. THE MCU UNIT IS BAD. OUR CAR ONLY HAS 25K MILES ON IT. MANY OTHER OLDER TESLAS HAVE HAD THIS PROBLEM.
NHTSA ODI 11338212
MY CAR'S CENTER SCREEN CONSOLE STOPPED WORKING AFTER AN UPDATE. I COULD NOT RESET IT AND SO IT STAYS BLANK USING RESET INSTRUCTIONS FROM TESLA. I DO NOT HAVE ACCESS TO MY TURN SIGNALS, BACKUP CAMERA, CABIN AND CLIMATE CONTROLS MAKING IT LESS SAFE FOR THE VEHICLE TO OPERATE. THE VEHICLE WAS STATIONARY WHEN IT HAPPENED. I BELIEVE AND BASED ON CONVERSATION WITH TESLA THIS IS AN MCU PROBLEM WITH THEY HAVE ME PAY $2500 TO UPGRADE. I THINK THIS IS AN ELECTRICAL SYSTEMS DESIGN FAULT AND SHOULD BE SUBJECT FOR RECALL AS THEY SHOULD KNOW THAT THE VEHICLE CANNOT HANDLE DATA THEY ARE PUSHING TO THE VEHICLE VIA SOFTWARE UPDATE.
NHTSA ODI 11338026
CENTER SCREEN SHUT OFF WHILE DRIVING DUE TO A 'MCU' FAILURE (DIAGNOSED BY TESLA SERVICE). I LOST ABILITY TO CONTROL TAILLIGHTS, REARVIEW CAMERA, HIGH BEAMS, CLIMATE CONTROL, CHARGING INFORMATION, NAVIGATION, PASSENGER AIRBAG INDICATOR. I WAS DRIVING ON A MULTI LANE HIGHWAY WHEN IT FAILED. DRIVETRAIN, BRAKES AND STEERING SEEM UNAFFECTED. AT TESLA SERVICE THEY TRIED TO DIAGNOSE, AND ONE OF THE RESETS DISABLED TURN SIGNALS, WHICH IS A LEGAL ISSUE IN ADDITION TO SAFETY. THE SCREEN HAD REBOOTED SEVERAL TIMES ON ITS OWN IN THE PRECEDING WEEKS.
NHTSA ODI 11337637
FOR MULTIPLE MONTHS MY CENTER SCREEN OF MY 2016 MODEL S 90D HAS BEEN FREEZING, DISPLAYING STRANGE CHARACTERS, TAKING A LONG TIME TO RESPOND, AND REBOOTING. UPON ENTERING MY VEHICLE TODAY THE SCREEN FAILED TO TURN ON. AFTER PERFORMING A RESET WHICH FAILED, AND CONTINUING TO DRIVE, THE SCREEN REBOOTED WHILE DRIVING. ABOUT 2 HOURS LATER, UPON ENTERING MY CAR TO DRIVE HOME, THE SCREEN WAS AGAIN DEAD. THE BRAKE LIGHTS, TURN SIGNALS, REVERSE CAMERA, AUDIO CHIMES, HIGH BEAM HEADLIGHTS, AUTOPILOT, ETC DO NOT WORK. TESLA SERVICE IS BOOKED OUT FOR OVER A WEEK.
NHTSA ODI 11337497
MAIN CONTROL UNIT FAILED MAKING THE ENTIRE CAR UNABLE TO DRIVE. THIS IS A KNOWN ISSUE BY TESLA. EVERY CAR WITH AN MCU1 WILL EVENTUALLY AND PREMATURELY FAIL.
NHTSA ODI 11337506
MCU FAILURE
NHTSA ODI 11337519
Working with the data? Download all 604 complaints as CSV · fetched from NHTSA July 23, 2026