2012 Mercedes-Benz C204.9 problems, complaints & recalls
Most-reported problem areas: Steering (1) · Engine (1)
🧭 Reliability snapshot
Compared against other Mercedes-Benz C204.9 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 (20)
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.
Equipment 2020-05-21 · NCU - HVAC Warra · Service Bulletin/Repair Instructions
to enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, mercedes-benz usa, llc (mbusa) has entered into a settlement regarding claims relating to alleged mold and mildew type odors originating from the hvac system in certain mercedes-b
Seat Belts 2018-07-23 · LI91 45-P-066075 · Service Bulletin/Repair Instructions
seat belt extender toothed rack sluggish or makes noises
Tires:pressure Monitoring And Regulating Systems 2018-06-20 · LI42.47-P-068271 · Service Bulletin/Repair Instructions
"tire pressure loss detection system inoperative" message in instrument cluster in yellow.
Engine 2017-10-09 · LI05 20-P-067123 · Service Bulletin/Repair Instructions
oil in engine wiring harness
Steering 2017-01-12 · LI46.35-P-055436 · Service Bulletin/Repair Instructions
red display message in instrument cluster "power steering malfunction - see owner's manual" immediately after engine start
Steering: Steering Wheel/Handle Bar 2017-01-09 · LI46.10-P-055432 · Service Bulletin/Repair Instructions
amg performance steering wheel heavily worn/soiled
Showing the 6 most recent of 20 bulletins. Search all of them free at nhtsa.gov.
What owners report
2020-08-29 · Steering“my vehicle and many other mercedes benz models suffer a failed electronic ignition switch and electronic steering lock. this is a known defect amongst many models/years of mercedes benz vehicles and only a dealer can repair. the cost of repair is $1,900. the causes the vehicles to be unable to start, and very clearly, a manufacturer defect.…”
2020-08-10 · Unknown Or Other · 45,000 mi“my vehicle started to pull left when braking. had all brakes replaced and pulling conitnued. after further review, found out that the rear crossmember / sub-frame was rotted on the driver side. when braking, the rear driver side wheel shifts. you can see the rear caliper move up. the problem is that the subframe is so rotted that it shifts the arms…”
2020-02-04 · Engine · 69,000 mi“timing chain tensioner all oil changes were done perfectly with the correct oil and original filter.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.