2010 Mercedes-Benz S-Class Electrical System Problems

THE COMPUTER CONTROL UNIT FOR THE HYBRID MOTOR HAS FAILED ON MY AND MANY S400S. THIS CAUSES CAR TO STALL OUT AT STOPLIGHTS OR WHILE DRIVING. THIS IS A SAFETY ISSUE.

THE CAR FIRST STARTED TO STOP INTERMITTENTLY WITHOUT ANY WARNING AT ALL AT THE TRAFFIC INTERSECTION, THEN I WAS ABLE TO START IT AGAIN AFTER SHUTTING EVERY THING DOWN. THEN A MONTH LATER, THE SAME THING HAPPENED AGAIN BUT THIS TIME I WAS NOT ABLE TO START THE CAR AGAIN. THIS COULD BE A VERY DANGEROUS SAFETY SITUATION IF THE ENGINE SHUTS DOWN WHILE I WAS DRIVING ON THE FREEWAY. MERCEDES ONLY PROVIDED TEMPORARY SOLUTION BY REPLACING THE CAR HYBRID INVERTER POWER ELECTRONIC CONTROL UNIT THROUGH A CAMPAIGN BULLETIN 2012080004. THIS BULLETIN APPLIES TO MERCEDES S400, 2010-2012 YEAR MODEL. HOWEVER, THE MAIN PROBLEM STILL REMAINS AND POSES A VERY SERIOUS SAFETY ISSUE FOR ALL THE DRIVER AND PASSENGERS. THIS IS NOT AN ISOLATE PROBLEM. ITS A VERY KNOWN PROBLEM FOR LOTS OF OWNERS FOR THOSE MODEL YEARS. MY CONTACT EMAIL ADDRESS IS "[XXX]" SHOULD YOU NEED TO CONTACT ME. PLEASE SEE THE ATTACHMENT FOR THE INVERTER. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *CC *TR

POWER ELECTRONIC CONTROL UNIT MALFUNCTION. CAR WILL NOT CRANK/ NO START. CAR WAS STATIONARY-PARKED.

FIRST THERE WAS NO POWER TO THE CAR SO WE REPLACED THE BATTERY. THEN THE CAR WAS RUNNING AND SHUT OFF ONE DAY AND WOULD NOT RESTART. THE VEHICLE WAS STATIONARY WHEN IT WOULD NOT RESTART. WE HAD IT TOWED TO MERCEDES DEALER. THEY ARE STATING IT THE POWER ELECTRONICS MODULE. THERE ARE TWO RECALLS RELATED TO THIS PART BUT WHEN CHECKING THE VIN OURS IS NOT PART OF THEM. THAT IS IMPOSSIBLE. THE MERCEDES DEALER EVEN STATED THERE WERE ISSUES WITH THIS PART THAT'S WHY MERCEDES ONLY MADE THESE CARS FOR TWO YEARS. PLEASE SEE CAMPAIGN NO. 2012080004. *TR

2010 S400 HYBRID WONT START FIRST INSTANCE WAS LESS THAN 24 HOUR OF PURCHASING CAR FROM LOCAL DEALER. LIGHTS ALL ON BUT NO CRANK. STARTED AFTER AND TWO WEEKS LATER IT HAD TO BE TOWED BECAUSE IT COMPLETELY WONT START. MBUSA FORUM CHAT AND SEVERAL SOCIAL MEDIA GROUPS ALL AROUND THE WORLD HAS THE SAME PROBLEM WITH THIS MODEL AND IT COMES DOWN TO AN ELECTRONICS POWER MODULE THAT COST MORE THAN WHAT THE CAR IS WORTH TO REPAIR. PLEASE ADVISE!

I HAVE A 2010 MERCEDES S400 THAT WAS PURCHASED NEW IN NYC AND I WAS PROMISED A 10YR/150K MILE WARRANTY BECAUSE OF A CARB ADOPTION NY AND 10 OTHER STATES WERE INVOLVED IN. MY VEHICLE HAS ONLY 37K MILES AND IS NEVER BEEN CRASHED OR PAINTED. I WENT TO MERCEDES OF MANHATTAN LOCATED ON 770 11TH AVE NYC, NY 10019. MY VEHICLE WAS DENIED THIS WARRANTY COVERAGE THE SERVICE MANAGER STATED BECAUSE IT'S AT HIS DISCRETION TO GRANT THIS OR NOT. I THEN PLEADED WITH HIM AND HE BEGAN TO INSULT ME SAYING MY VEHICLE IS FAR FROM PERFECT AND HE CAN'T GRANT AN ASSISTANCE. I MADE HIM AWARE OF MY WARRANTY INFORMATION I HAD AND HE SAID THERE IS NO NEED BECAUSE HE SEES EVERYTHING I HAVE ON HIS COMPUTER AND MERCEDES'BENZ DOESN'T MAKE MISTAKES. I THEN ASKED FOR A SPECIFIC REASON WHY I'M BEING DENIED AND HE THEN TOLD ME MY VEHICLE WASN'T UP TO DATE ON MAINTENANCE. I SHOWED HIM THE SERVICE RECORDS THAT SHOWED THE VEHICLE WAS UP TO DATE WITH MAINTENANCE AND HIS DEALER EVEN REPORTED IT ON CARFAX. HE THEN SAID HE WILL CALL ME BACK AND THEN REACHED THE CONCLUSION THAT THE 3 SCRATCHES ON MY REAR BUMPER WAS REASON ENOUGH TO DENY ME WARRANTY COVERAGE AND SENT ME A STATEMENT SHOWING IF ANY PART WAS DAMAGED DUE TO MISUSE OR DAMAGE THEN WARRANTY IS VOIDED. I THEN EXPLAINED TO HIM MY SCRATCHES ON THE BUMPER WOULDN'T HAVE ANY AFFECT OR INFLUENCE ON MY VEHICLES HYBRID BATTERY. HE SAID HE HAS THE TECHNICAL KNOWLEDGE AND HE CAN DENY ME FOR THAT. I NEED HELP PLZ. I HAVE BEEN TOLD BY THE MERCEDES PARTS DEPARTMENT THAT THE HYBRID BATTERY AND INSTALL COULD RANGE IN PRICE OF $32,000.00. MY QUESTION IS WHY DID MERCEDES GIVE CUSTOMERS A 10YR/150K MILE WARRANTY ON A VEHICLE THAT THEY ARE GOING TO NOT ACCEPT. MY VEHICLE IS 8 YEARS OLD BUT WAS ORIGINALLY PURCHASED FOR $100,000.00. I FEEL THIS IS UNFAIR AND THINK I NEED THE ASSISTANCE OF YOUR DEPARTMENT PLEASE.

THE S400 HYBRID HAS A HABIT OF STALLING WHEN IN A STOP POSITION. THIS REQUIRES A COMPLETE RE-START AT A STOP LIGHT OR AFTER HAVING COME TO A COMPLETE STOP. IN ADDITION THE AIR CONDITIONING SHUTS OFF AND DOES NOT COME BACK ON UNTIL YOU STOP FOR A FEW MINUTES AND RE-START THE VEHICLE. THE CAR STALLING IS VERY UN-SAFE. THE CAR STALLS AT A STOP POSITION.

VEHICLE BEGAN TO CUT COMPLETELY OFF WHEN STOPPED AT A RED LIGHT OR STOP SIGN. IT BEGAN TO TAKE LONGER AND LONGER TO RESTART WHEN TURNED OFF AND ON. EVENTUALLY THE VEHICLE WOULD NOT START AT ALL. WHEN TAKEN TO THE DEALER, I WAS INFORMED THAT THE POWER CONTROL MODULE WAS BAD AND THE COST TO REPLACE WAS UPWARD OF $11,000. AFTER SPEAKING TO MANY MANAGERS AND MY CAR SITTING AT THE DEALERSHIP FOR NEARLY 30 DAYS, I WAS CALLED AND INFORMED THAT THERE WAS A MANUFACTURER'S DEFECT FOUND IN THE POWER CONTROL MODULES WHICH WAS JUST EXTENDED TO COVER THE 2010 MODEL AND THAT THE MANUFACTURER WAS COVERING THE REPLACEMENT COSTS.

I WAS DRIVING, TRYING TO GET OFF THE HIGHWAY, I TOOK EXIT WHICH IS A 270 DEGREE CIRCLE WITH SHARP TURNS, I AM NOT DRIVING FAST AT ALL BUT THE CAR JUST STALLED WHILE DRIVING, STEERING WHEEL LOCKED AND I ALMOST FALL DOWN THE HILL, I ALMOST DIED, THIS PRODUCT HAS SERIOUS QUALITY ISSUES. I WAS DRIVING IN DOWN TOWN MANHATTAN WITH TWO OF MY MOST IMPORTANT CLIENTS, WE WERE GOING TO AN ART AUCTION, THE CAR JUST STALLED WHEN I STOPPED AT RED LIGHT AND WILL NOT RESTART, ME AND MY CLIENTS WERE WEARING 3 PIECE SUITS AND ITS MORE THAN 90 DEGREES OUT, WE WERE SWEATING LIKE CRAZY, I BELIEVE THE CAR'S POOR QUALITY MADE IT TO FAIL WITHOUT ANY SIGNS.

S400 IS A HYBRID FROM MERCEDES BENZ AND WHEN DRIVEN OVER 40 MILES IN DISTANCE THEN THE AC WILL TURN ON NO MATTER WHAT. WE TRIED TO TURN IT OFF BUT CAN NOT. MB DEALER TOLD US IT IS NORMAL OPERATIONS BUT THIS IS A MAJOR ISSUE AS IN THE WINTER THE AC ALSO TURNS ON. THIS HAS HAPPENED MANY TIMES AND MB DEALER HAS NOT ADDRESSED IT. *JS