Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
40–25K
925–50K
1050–75K
1375–100K
6100–150K
0150K+
42 reports with mileage · 26 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Electrical System. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Seats. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electronic Stability Control (esc). Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
I HAVE A 2002 MERCEDES C320. MY BATTERY IS DEAD AFTER SEATING OVERNIGHT. TOOK THE CAR TO THE AUSTIN MB DEALERSHIP TO DIAGNOSE THE PROBLEM. I WAS TOLD THAT THE POWER SEAT MOTOR IS DRAINING MY BATTERY. BOTH SEATS. COME TO FIND OUT THAT MANY OTHER PEOPLE HAVE EXPERIENCED THE SAME PROBLEM. I CALLED MERCEDES USA AND THEY SAID…
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I HAVE A 2002 MERCEDES C320. MY BATTERY IS DEAD AFTER SEATING OVERNIGHT. TOOK THE CAR TO THE AUSTIN MB DEALERSHIP TO DIAGNOSE THE PROBLEM. I WAS TOLD THAT THE POWER SEAT MOTOR IS DRAINING MY BATTERY. BOTH SEATS. COME TO FIND OUT THAT MANY OTHER PEOPLE HAVE EXPERIENCED THE SAME PROBLEM. I CALLED MERCEDES USA AND THEY SAID THAT SINCE THE CAR IS OUT OF WARRANTY, THERE IS NOT MUCH THEY CAN DO. THAT IS BULL!! OBVIOUSLY SINCE SO MANY PEOPLE WITH THIS CAR MODEL HAVE THE SAME PROBLEM, IT HAS TO BE A MANUFACTURER FAULT. I WAS WONDERING HOW MANY PEOPLE NEED TO EXPERIENCE THIS PROBLEM BEFORE MERCEDES WILL ADMIT THAT THEY HAVE A BAD COMPONENT ON THIS MODEL. I FIGURED,IF ENOUGH PEOPLE CALL AND TELL MB THAT THEY HAVE THIS SAME PROBLEM, THEY WILL REALIZE THAT THIS IS A DEFECTIVE PART AND THEY WILL ISSUE A RECALL AND PAY FOR NECESSARY REPAIRS. PLEASE CALL MERCEDES USA AND REPORT THIS PROBLEM. 1-800-FOR-MERCEDES (1-800-367-6372) OR 201-476-6200. *TR
NHTSA ODI #10456579
97,000 miles · Feb 25, 2011
Electrical System
TL* THE CONTACT OWNS A 2002 MERCEDES BENZ C320. THE CONTACT STATED THAT THE BATTERY CONTINUED TO FAIL EACH TIME THE VEHICLE WAS STARTED. THE VEHICLE WAS TAKEN TO THE DEALER WHO ADVISED THAT THE SEAT MODULE WAS DRAINING THE BATTERY THAT WAS LOCATED UNDER THE FRONT DRIVER AND PASSENGER SEATS. THE CONTACT STATED THAT HE HAD TO PURC…
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TL* THE CONTACT OWNS A 2002 MERCEDES BENZ C320. THE CONTACT STATED THAT THE BATTERY CONTINUED TO FAIL EACH TIME THE VEHICLE WAS STARTED. THE VEHICLE WAS TAKEN TO THE DEALER WHO ADVISED THAT THE SEAT MODULE WAS DRAINING THE BATTERY THAT WAS LOCATED UNDER THE FRONT DRIVER AND PASSENGER SEATS. THE CONTACT STATED THAT HE HAD TO PURCHASE TWO BATTERIES WITHIN FOUR MONTHS DUE TO THE RECURRING FAILURE. THE MANUFACTURER WAS NOT CONTACTED IN REGARDS TO THE FAILURE. THE FAILURE MILEAGE WAS 97,000.
NHTSA ODI #10384446
Mileage unknown · Dec 13, 2010
Electrical System
I HAVE A 2002 MERCEDES C-320 CAR THAT THE BATTERY WILL NOT HOLD A CHARGE! I HAD THE MERCEDES DEALER COME TO MY HOME AND PUT IN A NEW BATTERY. AFTER SPENDING $300 AND 2 DAYS LATER THE NEW BATTERY WAS DEAD. I WAS TOLD IT COULD BE THE ALTERNATOR/REGULATOR BY THE MB DEALER AND THE COST WOULD BE $1,200. I TOOK IT TO MY LOCAL MECH…
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I HAVE A 2002 MERCEDES C-320 CAR THAT THE BATTERY WILL NOT HOLD A CHARGE! I HAD THE MERCEDES DEALER COME TO MY HOME AND PUT IN A NEW BATTERY. AFTER SPENDING $300 AND 2 DAYS LATER THE NEW BATTERY WAS DEAD. I WAS TOLD IT COULD BE THE ALTERNATOR/REGULATOR BY THE MB DEALER AND THE COST WOULD BE $1,200. I TOOK IT TO MY LOCAL MECHANIC, WHO WORKS ON FOR. CARS, AND THEY REPLACED THE ALTERNATOR/REG. FOR $512 OUT THE DOOR. 2 DAYS LATER THE BATTERY WAS DEAD AGAIN. I WAS TOLD MY NEW MERC. BATTERY WAS NOT GOOD AND THEY REPLACED IT. 7 DAYS LATER MY BATTERY DIED AGAIN. MY LOCAL MECH. TOLD ME TO TAKE IT BACK TO THE MB DEALER AS THERE SEEMS TO BE A PROBLEM WITH THEIR MODULE AND THEY SHOULD REPLACE IT FOR FREE AS THROUGH HIS RESEARCH MANY INDIVIDUALS ARE HAVING THE SAME PROBLEM. CLEARLY A DEFECT PART BY MERCEDES AS THROUGH MY AND MY MECH. RESEARCH, THE MB MECH ARE REPLACING THE OLD MODULES WITH A NEW AND IMPROVED ONE TO FIX THE PROBLEM. I NOW HAVE NOW HAD AAA TO COME AND CHARGE MY BATTERY ONCE AGAIN AND I WILL TAKE IT TO THE MB DEALER. I HOPE THEY A WILL DO THE RIGHT THING. *TR
NHTSA ODI #10370422
54,000 miles · May 2, 2010
Electrical SystemSeats
LEFT AND RIGHT ELECTRONIC SEAT MODULES WHICH ALSO CONTROLS THE STEERING WHEEL AND OTHERS FAILED AND MB DID NOT WANT TO ACCEPT THE RESPONSIBILITY PART NUMBERS ARE: 2118704626 2118704726. *TR
NHTSA ODI #10328394
44,975 miles · Apr 13, 2010
Electrical SystemSeats
AT 45,000 MILES FRONT PASSENGER SEAT STARTED DRAINING THE BATTERY. DEALER TOLD BAD CONTROL UNIT. BECAUSE OF HIGH COST OF REPAIR ($900.), IT HAS BEEN DISCONNECTED. THE CONTROL UNIT WAS LEAST UTILIZED FOR THE PASSENGERS SEAT. THIS SHOULD NOT HAVE FAILED UNDER 45000 MILES USE. *TR
NHTSA ODI #10325370
Mileage unknown · Apr 5, 2010
Electrical SystemSeats
2002 C320 MERCEDES BENZ ELECTRICAL SEATS DRAINING BATTERY. *TR
NHTSA ODI #10323794
92,887 miles · Dec 27, 2009
Air BagsElectrical SystemExterior Lighting
MERCEDES BENZ 2002, C320 *STEERING WHEEL MALFUNCTION *SRS WARNING *SEATS MALFUNCTION *BRAKE AND OIL FLUID MISLEADING INFO *BATTERY DRAIN *TURNING SIGNALS REQUIRING NEW HARNESS THAT COST A LOT $$$. *TR
NHTSA ODI #10297061
85,000 miles · Sep 2, 2009
Electrical SystemSeats
SEAT CONTROL UNITS DRAINING THE BATTERY IF CAR IS PARKED. CAR WILL NOT START IF PARKED FOR MORE THEN 24H. DRAIN AMPS BETWEEN 1.2 AND 1.4 AMPS. HAD TO DISCONNECT THE SEAT MODULES, NOW SEATS CAN'T BE ADJUSTED. *TR
NHTSA ODI #10282614
74,500 miles · Aug 10, 2009
Electrical System
CAR STALLED IN THE MIDDLE OF THE ROAD AND ALMOST CAUSED AN ACCIDENT. AFTER 15 MINUTES, CAR STARTED BACK. I HAD IT DIAGNOSED AND A MODULE WAS REPLACED. 2 MONTHS LATER, THE BATTERY STARTED DRAINING. I HAD THE ALTERNATOR REPLACED AND THE BATTERY TWICE. CAR WILL WORK FOR A DAY OR TWO AND DIES AGAIN. SO MANY OTHER MERCEDES OWNERS OF …
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CAR STALLED IN THE MIDDLE OF THE ROAD AND ALMOST CAUSED AN ACCIDENT. AFTER 15 MINUTES, CAR STARTED BACK. I HAD IT DIAGNOSED AND A MODULE WAS REPLACED. 2 MONTHS LATER, THE BATTERY STARTED DRAINING. I HAD THE ALTERNATOR REPLACED AND THE BATTERY TWICE. CAR WILL WORK FOR A DAY OR TWO AND DIES AGAIN. SO MANY OTHER MERCEDES OWNERS OF C320 ARE HAVING THE SAME PROBLEM. BATTERY DYING AND CAR STALLING. *TR
NHTSA ODI #10279868
76,000 miles · May 18, 2009
Electrical System
BATTERY DRAINING, OFFICIAL DEALERSHIP IS UNABLE TO IDENTIFY WHAT IS CAUSING DRAIN. *TR
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please see the recall report for a complete list of models and model years. The glass sunroof panel may not be properly secured and can detach.
Consequence & remedy
Consequence: A detached sunroof panel can become a road hazard, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the sunroof panel as necessary, free of charge. Owner notification letters were mailed January 10, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of previous NHTSA recall number 22V-954. MBUSA's number for this recall is 2024120001/2/3.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The glass sunroof panel may not be properly secured and may detach.
Consequence & remedy
Consequence: A detached sunroof panel may become a road hazard, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the sunroof panel as necessary free of charge. Owner notification letters were mailed February 3, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. This recall expands NHTSA recall number 19V-918. MBUSA's numbers for this recall are 2023010004, 2023010005, and 2023010006.
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2001-2011 vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly resulting in the glass panel detaching from the vehicle. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V918-4126.pdf
Consequence & remedy
Consequence: A detached glass panel can separate from the vehicle and become a road hazard, increasing the risk of a crash.
Remedy: MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. The recall began July 10, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020040011.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2002 Mercedes Benz C320 Problems, Complaints & Recalls | Skip That Year