2003 Mercedes Benz C Class problems, complaints & recalls
Most-reported problem areas: Vehicle Speed Control:accelerator Pedal (1) · Seat Belts (1) · Power Train:driveline (1)
🧭 Reliability snapshot
Compared against other Mercedes Benz C Class model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (6)
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.
Fuel System, Other:storage:tank Assembly:mounting 2008-09-17 · PB-61-10-07 · Service Bulletin/Repair Instructions
mercedes: replacing the longitudinal member (left and right) below the main floor panel on all my 204 up to 12/31/07. (c300, c350, c300 4-matic, c63 ame). *pe
Electronic Stability Control (Esc) 2008-03-28 · PB 42-45-98 · Service Bulletin/Repair Instructions
model 203 (c) series from production 8/1/01 to 2/1/03 and model 209 (clk) series up to production 2/1/03; esp visit workshop with fault code c1185. *pe
Electrical System:starter Assembly 2005-10-01 · 2005100005 · Service Bulletin/Repair Instructions
a software characteristic may affect the rational speed of the starter. the engine control unit will be reprogrammed. *tt
Equipment 2005-03-09 · 8270314B · Service Bulletin/Repair Instructions
high-pitched whining noise heard on telephone/vcs/tele aid calls. *tt
Service Brakes, Hydraulic 2004-04-01 · 424638 · Service Bulletin/Repair Instructions
bleed brake system and check brake system for air on the sensotronic brake control (sbc) system using star diagnosis. also includes mercedes-benz 211 model my2004. *tt
Engine And Engine Cooling:exhaust System:emission Control 2004-03-01 · 2003090005 · Service Bulletin/Repair Instructions
engine control module may have been flashed incorrectly, thus affecting engine emissions. this also includes mercedes slk-class 2003. *tt
What owners report
2011-07-11 · Engine And Engine Cooling:cooling System · 70,000 mi“tl* the contact owns a 2003 mercedes benz c240. the contact stated the coolant was leaking from the radiator into the transmission. the dealer was contacted and informed her that she had to flush the radiator and the transmission or replace the torque converter. if the failure was not repaired by flushing the system, the transmission would need to…”
2011-06-01 · Seat Belts · 20,000 mi · 💥 crash“tl*the contact owns a 2003 mercedes benz c240. the contact stated while driving 15 mph the vehicle in front of him suddenly stopped causing him to crash into the rear of the vehicle. the passenger seat belt did not hold the passenger in the front seat which caused her head to hit the windshield. both the driver and passenger side air bags did not…”
2009-03-10 · Fuel System, Other“my 2003 c240 mercedes pilot bushing is experiencing heavy oil leak - there is a current re-call on same issue with other models. the dealer i use to service my care, refuse to repair because they said my model is not included in the re-call. 2nd issue - my driver side door handle is broken because of manufacture defects . sometimes hard to open a…”
2008-12-29 · Engine And Engine Cooling:exhaust System · 70,003 mi“2003 mercedes c240 stalls immediately after prolonged turnpike travel ( 1.5 hours) at exit ramp to an arterial roadway. this increases rearend accident potential. mercedes checked vehicle but no report codes indicated. suggested that it may be computer of sensor related. mercedes suggested pulling over for 30 min. to let computer reset. first inci…”
2007-08-07 · Vehicle Speed Control:accelerator Pedal · 77 mi“tl*the contact owns a 2003 mercedes c240. she stated that her vehicle would not accelerate fast enough to safely merge in and out of traffic. the manufacturer stated that they would be unable to assist her and they would not accept the extended warranty. the contact stated that she would file a complaint with the state attorney generals office d…”
2007-08-06 · Equipment:appliance:air Conditioner · 32,073 mi“while driving with a/c set on "auto" the a/c system would suddenly turn off by itself and would turn of repeatedly when started again. during such episodes the a/c would act erratic with fans turning on and off at different outlets, cycles between heating and cooling, and makes hissing sounds. this would occur many times a day on a daily basis in s…”
2007-08-03 · Electrical System:alternator/Generator/Regulator · 43,620 mi“i own a 2003 mercedes c240 station wagon with about 42000 miles, a few days ago i observed some messages on dash which seem to indicate alternator problem. my vehicle has not been heavily used and i am surprised to learn that a new alternator may be needed, this because a friend with c class sedan has had the same issue just 2 weeks ago and cost hi…”
2005-08-28 · Power Train:driveline · 18,300 mi“my mercedes-benz c-240 (2003 model), having less than 18500 miles, suddenly lost power after some 2-hour worth of free-way driving. around noon on friday, 8/26/05, i was driving south -bound on i-15 past victorville (ca), about 9 miles past the exit for route 18, when my c-240 suddenly lost power. as i depressed the accelerator, i felt no power a…”
2004-06-04 · Unknown Or Other“vehicle was damaged while being shipped. *mr *sc *jb…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.