NHTSA Complaint #11254386 — 2015 CHEVROLET MALIBU

INITIALLY, CIRCA TWO YEARS AGO, HAD AN ELECTRICAL FAILURE ON HARD BRAKING - THE RADIO DISPLAY SCREEN AND OTHER ELECTRICAL SHUT DOWN, CAR STALLED. AFTER RESTART, CAR WOULD ONLY MOVE FORWARD SLOWLY. EVENTUALLY THIS CLEARED. THE CAR HAS HAD A TOTAL OF ~5 INCIDENTS OF COMPLETE BATTERY DRAIN AND CONSEQUENT FAILURE TO START AFTER SITTING, EVEN THOUGH THE ALTERNATOR PREVIOUSLY WAS SPINNING, AND "BATTERY VOLTAGE" REPORTS AS SOMEWHERE IN THE 13-14 V RANGE. ON THREE SEPARATE REPAIRS, DEALER HAS REPLACED THE AFT BATTERY, THEN THE FORWARD BATTERY, THEN UPDATED FLASH MEMORY (OF BATTERY CONTROL? ANTILOCK BRAKE CONTROL, NOT SURE), PER A RECALL NOTICE AFFECTING OTHER NEARBY MODEL YEARS. AFTER THIS, THE CAR WENT SEVERAL MONTHS WITHOUT INCIDENT, BUT DRAINED BATTERY AND FAILED TO START AGAIN THIS WEEK. IT APPEARS THAT THE COMPLEX AUTO STOP/START ELECTRICAL SYSTEM IS FLAWED IN SUCH A WAY THAT THE LOCAL DEALER CANNOT DIAGNOSE WHY THE BATTERY KEEPS DRAINING. BECAUSE THE FORWARD BATTERY CAPACITY IS VERY LARGE, AND USAGE OF THE CAR IS LOW, IT TAKES SEVERAL MONTHS TO DRAIN THE BATTERY. WHEN THE BATTERY IS DRAINED, THE CAR NO LONGER FUNCTIONS - POWER STEERING, ELECTRONICS, ETC, HENCE IT IS A SAFETY ISSUE IF IT HAPPENS WHILE DRIVING.