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
2002 Mercedes Benz C320
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all C320 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
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.
Seats complaints
23 reports2002 C320 MERCEDES BENZ ELECTRICAL SEATS DRAINING BATTERY. *TR
WE HAVE A 2002 MERCEDES C320 WAGON. THE AUTOMATIC DRIVER AND PASSENGER SEATS DRAINED THE BATTERY COMPLETELY WHERE THE CAR WILL NOT START. WE HAVE DISCONNECTED THE MODULE SEATS SO THAT IT WILL STOP DRAINING THE BATTERY. THE REPLACEMENT FOR EACH MODULE SYSTEM FOR THE SEAT IS ABOUT $500 OR MORE. I BELIEVE THIS IS A MANUFACTURER…
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WE HAVE A 2002 MERCEDES C320 WAGON. THE AUTOMATIC DRIVER AND PASSENGER SEATS DRAINED THE BATTERY COMPLETELY WHERE THE CAR WILL NOT START. WE HAVE DISCONNECTED THE MODULE SEATS SO THAT IT WILL STOP DRAINING THE BATTERY. THE REPLACEMENT FOR EACH MODULE SYSTEM FOR THE SEAT IS ABOUT $500 OR MORE. I BELIEVE THIS IS A MANUFACTURER'S DEFECTS AS IT IS DANGEROUS IF OWNERS ARE NOT AWARE OF THE SITUATION AND LEAVE THEIR CAR PARK FOR A PERIOD OF TIME WILL CAUSE THE OWNERS NOT ABLE TO START THEIR CAR, ESPECIALLY IN AN EMERGENCY SITUATION. *JB
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
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
FAULTY SEAT CONTROLLER OF A MERCEDES C32 AMG, DRAINS CAR BATTERY OVERNIGHT, CAUSES NEW BATTERY REPLACEMENT AND CONTROLLER REPLACEMENT (NOT CHEAP - APPR $400). NO NEW CONTROLLER PURCHASED FROM MB USA, JUST DISCONNECTED PLUG (MOVING SEAT IS INOPERABLE). I NOTICED ALMOST ALL US MERCEDES BENZ VEHICLES WITH THAT BODY STYLE (W203) HAV…
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FAULTY SEAT CONTROLLER OF A MERCEDES C32 AMG, DRAINS CAR BATTERY OVERNIGHT, CAUSES NEW BATTERY REPLACEMENT AND CONTROLLER REPLACEMENT (NOT CHEAP - APPR $400). NO NEW CONTROLLER PURCHASED FROM MB USA, JUST DISCONNECTED PLUG (MOVING SEAT IS INOPERABLE). I NOTICED ALMOST ALL US MERCEDES BENZ VEHICLES WITH THAT BODY STYLE (W203) HAVE THAT ISSUE. SOURCES: BAY AREA DEALERSHIPS, A REPAIR SHOP AND ONLINE FORUMS. *TR
CAR BATTERY DRAINS DUE TO A SHORT IN THE POWER SEAT CONTROL UNITS IN MY 2002 MERCEDES BENZ C320. REPLACED BATTERY, RECHARGED BATTERY NUMEROUS TIMES. EVERY OTHER OWNER OF THIS MAKE / MODEL COMPLAINS OF SAME PROBLEM. *TR
THE CAR PARKED IN THE GARAGE OVERNIGHT AND THE MORNING I HAD AN EMERGENCY AT THE BUSINESS AND COULD NOT START THE CAR. THE BATTERY WAS TOTALLY DRAINED. HAD IT TOWED TO THE SHOP TO BE DIAGNOSED THAT IT WAS THE FRONT DRIVER SIDE POWER SEAT THAT HAS DRAINED ALL THE ENERGY FROM THE BATTERY EVEN WHEN THE CAR IS NOT RUNNING. THE …
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THE CAR PARKED IN THE GARAGE OVERNIGHT AND THE MORNING I HAD AN EMERGENCY AT THE BUSINESS AND COULD NOT START THE CAR. THE BATTERY WAS TOTALLY DRAINED. HAD IT TOWED TO THE SHOP TO BE DIAGNOSED THAT IT WAS THE FRONT DRIVER SIDE POWER SEAT THAT HAS DRAINED ALL THE ENERGY FROM THE BATTERY EVEN WHEN THE CAR IS NOT RUNNING. THE POWER SEAT IS NOW CONTINUOUSLY EXCESSIVELY DRAIN THE BATTERY EVEN WHEN THE CAR IS NOT RUNNING. THE CONSEQUENCES ARE THAT THE CAR IS NOT TRUSTED TO BE ABLE TO START IN AN EMERGENCY SITUATION WHEN THE CAR IS NEEDED FOR TRANSPORTATION. THE CAR HAS VERY LOW MILEAGE ON IT. THE POWER SEAT HAS BEEN RARELY USED AND IT SHOULD NOT FAIL FOR HAVING BEEN IDLE/NOT USED FOR THE LENGTH OF TIME THAT I HAVE OWN THE CAR. I AM THE ORIGINAL FIRST TIME OWNER OF THE CAR AND I HARDLY HAVE TO ADJUST THE POWER SEAT. I BELIEVE THAT THE POWER SEAT IS A MANUFACTURE DEFECT AND COULD BE A DANGEROUS IMPEDIMENT IN AN EMERGENCY SITUATION. THE ARE LOTS OF MERCEDES OWNER WHO HAVE EXPERIENCING THE SAME MALFUNCTION IN THEIR POWER SEATS. I FEEL THAT WITH THESE MANY PEOPLE, IT WARRANTS A RECALL BY MERCEDES FOR ALL THE POWER SEATS. *TR
I OWN A MERCEDES BENZ C320 AND LATELY I'VE BEEN EXPERIENCING SOME PROBLEMS, FEW WEEKS AGO, MY CAR WOULDN'T START ALL OF A SUDDEN. I JUMP STARTED AND I NOTICED 2 FAULTS .. ESP WARNING LIGHT AND LIGHT SENSOR ,FOR SOME REASONS SOMETHING WAS DRAINING MY BATTERY, I WENT AND PURCHASED A BRAND NEW BATTERY AND 2 DAYS LATER IT DID THE SA…
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I OWN A MERCEDES BENZ C320 AND LATELY I'VE BEEN EXPERIENCING SOME PROBLEMS, FEW WEEKS AGO, MY CAR WOULDN'T START ALL OF A SUDDEN. I JUMP STARTED AND I NOTICED 2 FAULTS .. ESP WARNING LIGHT AND LIGHT SENSOR ,FOR SOME REASONS SOMETHING WAS DRAINING MY BATTERY, I WENT AND PURCHASED A BRAND NEW BATTERY AND 2 DAYS LATER IT DID THE SAME THING AGAIN, I WAS TOLD THAT IT WAS A SEAT SENSOR THAT CAUSED IT,S O WE UNPLUGGED THE SEATS, EVERYTING SEAMED FINE FOR LIKE 4 TO 5 DAYS,WHILE I WAS DRIVING,THE CAR JUST CAME TO A COMPLETE STOP WOULD NOT MOVE,THE ENGINE LIGHT CAME ON, I'VE COME TO REALIZE THAT I'M NOT THE ONLY ONE WITH THIS PROBLEM, I HOPE THE GOVERNMENT WOULD DO THE RIGHT THING BY RECALLING THOSE VEHICLES. *TR
I HAVE A 2002 MERCEDES C320 AND THE CAR'S BATTERY KEEP DYING AND I HAVE TO JUMP START MY CAR EVERY DAY. BATTERY WAS REPLACED AND SAME PROBLEM HAPPENS AGAIN AND AGAIN. I WENT ONLINE AND FOUND OUT THAT I AM NOT THE ONLY PERSON WHO HAS THE PROBLEM. IT HAPPENS TO MANY MANY MANY PEOPLE - SEE ATTACHED LINK HTTP://WWW.BENZWORLD.OR…
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I HAVE A 2002 MERCEDES C320 AND THE CAR'S BATTERY KEEP DYING AND I HAVE TO JUMP START MY CAR EVERY DAY. BATTERY WAS REPLACED AND SAME PROBLEM HAPPENS AGAIN AND AGAIN. I WENT ONLINE AND FOUND OUT THAT I AM NOT THE ONLY PERSON WHO HAS THE PROBLEM. IT HAPPENS TO MANY MANY MANY PEOPLE - SEE ATTACHED LINK HTTP://WWW.BENZWORLD.ORG/FORUMS/W203-C-CLASS/1196568-MERCEDES-C320-BATTERY-DRAIN-4.HTML I HAVE PAID THE DEALER $375 JUST FOR THE DIAGNOSES WITH NOTHING FIXED AND ACCORDING TO THESE COMPLAINTS, EVEN AFTER THEY HAVE THE RECOMMENDED REPLACEMENT, THE PROBLEM PERSISTS. IT SEEMS LIKE THEY SHOULD HAVE ALL THESE CARS RECALLED AND HAVE THE PROBLEM FIXED WHEN IT'S THEIR PRODUCTION/COMPONENT PROBLEM.
Official recalls
324V874000 · Visibility:sun/moon Roof Assembly
Nov 19, 2024
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.
22V954000 · Visibility:sun/moon Roof Assembly
Dec 23, 2022
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.
19V918000 · Visibility:sun/moon Roof Assembly
Dec 20, 2019
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
0No exact-year investigations in this snapshot.
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