NHTSA Complaint #11415096 — 2015 TESLA MODEL S

AFTER HAVING MY BATTERY COOLANT HEATER REPLACED ON FEBRUARY 22, 2021 I NOTICED PROBLEMS WITH MY CAR STARTING UP SLOWLY. NOTE ERROR MESSAGES WERE NOTED ON MY VEHICLE HOWEVER. ON MARCH 10 WHILE DRIVING HOME FROM WORK ON A SMOOTH STRAIGHT FREEWAY THE ENTIRE ELECTRICAL SYSTEM IN MY CAR FAILED CAUSING PROPULSION TO GO OFF LINE AND THE BRAKE PEDAL TO LOCK UP AND BECOME NON-FUNCTIONAL UNTIL THE SYSTEM REBOOTED. FOR APPROXIMATELY 20 TO 30 SECONDS IT WAS IMPOSSIBLE TO DEPRESS THE BRAKE PEDAL. FORTUNATELY I WAS ON THE FREEWAY AND PRESSING THE BRAKE PEDAL WASN'T REQUIRED. I AM CONCERNED ABOUT THE SAFETY OF THIS VEHICLE NOW SINCE I HAD MISTAKENLY BELIEVED THAT THERE WAS REDUNDANCY IN THE SYSTEMS THAT WOULD PRESERVE BRAKE FUNCTION IN THE MIDST OF A POWER FAILURE. THERE IS NO MANUAL HAND BRAKE. I AM EXTREMELY CONCERNED THAT A SYSTEM FAILURE LIKE THIS COULD HAPPEN AGAIN AS I AM APPROACHING AN INTERSECTION, A SCHOOL ZONE OR GOING DOWN A STEEP DECLINE. I HAVE ATTACHED INVOICES FROM THE ORIGINAL SERVICE WITH THE BATTERY COOLANT HEATER THAT WAS REPLACED AS WELL AS THE SUBSEQUENT SERVICE AFTER THE INCIDENT WHERE THE TECHNICIANS IDENTIFIED THAT THE DRIVE UNIT WAS IMPROPERLY CONNECTED