2009 Mercedes Benz C problems, complaints & recalls
Most-reported problem areas: Exterior Lighting (3) · Steering (2) · Power Train:automatic Transmission (2)
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (9)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System:software 2013-02-19 · LI82.85-P-055696 · Service Bulletin/Repair Instructions
comand: no sound, sdars message in central display "device unavailable"
Seat Belts:front:retractor 2012-04-20 · LI-91-40P051830 · Service Bulletin/Repair Instructions
mercedes-benz: the front seat belt catches when pulled out, because the strap was not guided back properly. happens on both the passenger and driver's side. *rm updated 5/22/2012. *js
Exterior Lighting:headlights 2011-08-29 · LI-82-10-P · Service Bulletin/Repair Instructions
mercedes benz: new repair method for low beam halogen lamp bulb that is inoperative. *pe
Engine And Engine Cooling:engine 2011-05-31 · LI-05-20-P · Service Bulletin/Repair Instructions
mercedes-benz: the malfunction light is on with multiple possible trouble codes stored. there could be a problem with the camshaft and/or scoring of a piston. *rm
Power Train:automatic Transmission 2011-04-04 · LI-27-60-P049270 · Service Bulletin/Repair Instructions
mercedes-benz: the auto-transmission switches to limp home mode or has no power. there are multiple possible fault codes. a piston may be damaged. *rm
Steering 2010-12-08 · LI-80-57 · Service Bulletin/Repair Instructions
mercedes-benz: diagnostic procedures for the driver authorization system. *rm
Showing the 6 most recent of 9 bulletins. Search all of them free at nhtsa.gov.
What owners report
2014-02-10 · Power Train · 43,400 mi“at 43,500 and 54 months the transmission in the car had to be replaced. the car has always been properly serviced at the mercedes dealer. i believe this model/make has defects as i have brought it back for service many times. *tr…”
2014-02-04 · Exterior Lighting · 49,000 mi“the wires within both of my headlights of my 2009 mercedes c300 have their insulation so deteriorated that the wires are fully exposed. this issue causes the lights to cut in and out without warning which have occurred during highways speeds and or rural areas in puerto rico. this dangerous situation is not being taken care of by the manufacturer…”
2013-12-19 · Exterior Lighting · 4,850,000 mi“lights in the back right panel are not working.... got message stating they were out....checked them and electrical connection is burned and looks like wires are fried. *tr …”
2013-11-12 · Service Brakes · 71,000 mi“dim left stop light. melted plug. mercedes benz c300 2009 w204. *tr…”
2013-07-16 · Exterior Lighting“the rear tail lights on my mb c350 shows signs of a burning/melting on the connector. i initially received a notice on my dash that the right rear bulb was bad and not working. i checked the connectors and it showed signs of melting/burning. after adjusting the wires, the lights would work until the car would hit a bump and i would have to again…”
2010-07-01 · Power Train:automatic Transmission · 15 mi“tl*the contact owns a 2009 mercedes c350. the contact stated that when the accelerator pedal was engaged, the transmission surged forward at a high rate. the failure occurred intermittently. the dealer was unable to duplicate or diagnose the failure. the failure mileage was 15 and the current mileage was 32000.…”
2010-02-23 · Power Train:automatic Transmission · 14,000 mi“tl*the contact owns a 2009 mercedes benz c300. whenever the contact placed the vehicle into reverse or drive i would violently switch into gear causing the vehicle to slightly surge forward. the vehicle has been taken to the dealership on thirteen different occasions where several different parts have been serviced on the transmission;however the c…”
2009-10-24 · Engine And Engine Cooling:engine · 1,400 mi“bought a new 2009 c300 mercedes at a dealer in san diego. car has rough idle and shakes for 30 seconds in the morning. dealer checked and found nothing wrong. they are blaming it on strict emission issues as the source of the rough idle. hood does not latch unless slammed hard. dealer claimed they had adjusted latch but still the same. *tr…”
2009-09-06 · Visibility · 450 mi“i purchased a c300 in april 2009, within a few days i noticed a crack in the driver sideview mirror. i took the car to the dealership and the salesman that sold me the car took care of arranging the repair. they had to order the mirror and gave me a loaner. i was never given an explanation as to what caused the crack. *tr…”
2009-06-04 · Service Brakes, Hydraulic · 7,000 mi“tl*the contact owns a 2009 mercedes benz c300. the contact stated that the vehicle was experiencing several computer defects. while parked on a hill and attempting to place the gear shifter into reverse, the vehicle would roll forward instead of backwards. the vehicle would roll forward approximately one foot as if it were in neutral. during th…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.