2014 Mercedes-Benz C204.9 problems, complaints & recalls
Most-reported problem areas: Vehicle Speed Control (2) · Steering (2) · Structure:body (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 (21)
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
Equipment:electrical 2018-08-21 · LI82 85-P-068646 · Service Bulletin/Repair Instructions
mb app iheart radio is no longer available after a head unit update
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
Showing the 6 most recent of 21 bulletins. Search all of them free at nhtsa.gov.
What owners report
2020-10-30 · Electrical System · 59,000 mi“the anti theft system failed after 59,000 miles, locke the steering wheel and won't allow the car to start. mercedes charges 1,800 dollars to replace it.. needs to be recalled very dangerous.…”
2020-10-08 · Steering · 40,000 mi“steering wheel will not go up or down…”
2020-09-21 · Vehicle Speed Control · 44,450 mi“sudden loss of power while trying to accelerate,engine light comes on and car goes into limp mode. code p002. car has 44450 miles. …”
2020-08-25 · Air Bags · 55,000 mi“the company has not been able to fix the airbags of my car because of the part is not available in the local dealership. this is my second complain to the nhtsa. my first was in 2018. it is sad that a safety issue by the company is not been taken care by the company even after 2 years.…”
2020-08-10 · Vehicle Speed Control“i can't believe i experienced that .. my car all of the sudden jerked on the freeway and started shaking . i seriously thought we had an earthquake .. then it accelerated and the next thing you know i'm going 25 miles and hour .. so glad i was near an exit i put the car in neutral rolled down the hill , made a turn and shut it off .took me a minut…”
2020-05-30 · Engine · 104,000 mi“2 camshaft adjusters replaced at 104,000 miles. some fail every 50-60,000 miles. work done at hoehn mercedes. before repair - slow crank at start, some smoke when engine starting, check engine light came on. *tr…”
2020-05-01 · Steering“electronic steering lock system fails in every mercedes benz its a defective part.…”
2020-04-01 · Structure:body · 54,000 mi“there is a glass roof panel between the windshield and the sunroof. this glass panel is extremely brittle and shatters easily. this is my second time having to replace this glass panel. it is a dealer only part and costs $960 plus $300 for installation. the cost of this glass panel is extremely high. both times this glass panel shattered, noth…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.