| 1 | 0 | 3 | 4 | 3 | 4 |
2009 Mercedes-Benz C-Class repairs by problem area
Engine (19%)
Transmission and Drivetrain (5%)
Brakes and Traction Control (5%)
Suspension and Steering (6%)
Electrical and Air Conditioning (43%)
Paint, Rust, Leaks, Rattles, and Trim (11%)
Other (10%)
Select a problem area
- Engine
- Transmission and Drivetrain
- Brakes and Traction Control
- Suspension and Steering
- Electrical and Air Conditioning
- Paint, Rust, Leaks, Rattles, and Trim
- Other
Chart based on 171 repairs.
2009 Mercedes-Benz C-Class electrical repair cost distribution
$2500+ (2%)
$1000 - $2499 (10%)
$500 - $999 (3%)
$100 - $499 (18%)
< $100 (68%)
Chart based on 62 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2009 Mercedes-Benz C-Class
Engine not specified
| 86800 mi $2800 |
ESL board broken, got it fixed by wireman. Keys have to be reprogrammed. |
2009 Mercedes-Benz C-Class 4dr Sedan
turbocharged 221hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
| 48360 mi £250 |
Driver's door lock did not work with central locking. |
| 68200 mi £110 |
Problems with audio system. I bought a second hand unit to replace faulty one. |
2009 Mercedes-Benz C-Class 4dr Sedan
turbocharged 201hp 2.1L I4 Diesel 6-speed manual RWD
| 79980 mi €500 |
Battery tests and replacement |
2009 Mercedes-Benz C-Class 4dr Sedan
supercharged 181hp 1.8L I4 5-speed shiftable automatic RWD
| 45760 mi $400 |
Inconsistent locking/unlocking response from driver-side door. Central locking control module in car replaced. |
| 48980 mi $200 |
Intermittent illumination of a brake light when car is off, locked and unoccupied. Fault identified and addressed (replaced part is not known). |
2009 Mercedes-Benz C-Class 4dr Sedan
supercharged 154hp 1.6L I4 6-speed manual RWD
| 18600 mi $2000 |
Air-condition compressor and other AC parts failure. Needed complete replacement. Total costs were nearly $5,000. The dealer absorbed about $3,000 of the cost. They said the failure was due to the humid climate where I live |
| 26040 mi $1500 |
new blower |
2009 Mercedes-Benz C-Class 4dr Sedan
451-horsepower 6.2L V8 7-speed shiftable automatic RWD
| 33000 mi | headlamp switch |
2009 Mercedes-Benz C-Class 4dr Sedan
268-horsepower 3.5L V6 7-speed shiftable automatic RWD
| 54500 mi US $100 |
Needed a replacement alternator. Under extended warranty. |
| 11000 mi | AC needed recharge, no leak detected. |
| 13000 mi | Expanded valve of AC unit needed replacing. Not detected during first repair, fixed after second repair. |
| 65000 mi US $400 |
Crash Sensor Failure |
| 82500 mi | Bi-xenon light out on driver's side. Bulb change did not fix it. Requires another trip to dealership for repair. |
| 98000 mi US $300 |
The ballast controller for driver's side HID headlight failed. Replaced with OEM part. |
| 68000 mi US $250 |
Couldn't start the car. Had to change battery. |
| 96000 mi US $1200 |
Ignition switch module broke. Would not recognize either key. Required replacement of ignition switch module and reprogramming of both keys |
| 26000 mi | GPS Multi-antenna failure. Actually, it was never completely functional. |
| 86800 mi | Right parking light. Wires melted. Have to change the whole light housing. Bad design by Mercedes Benz. Living with it for now. |
2009 Mercedes-Benz C-Class 4dr Sedan
268-horsepower 3.5L V6 7-speed shiftable automatic AWD
| 34720 mi | Radio not working. Replaced system. |
| 3100 mi | Center mounted LED brake light assembly failed and had to be replaced |
| 9920 mi | Nav system showed incorrect location and incorrect direction of travel - no satellites tracked (vs. 9 or 10 normally) - intermittent problem - dealer could not replicate during service inspection |
| 18600 mi | Navi system unable to see any satellites, therefore giving false location & unable to track vehicle movements. Dealer found repair bulletin regarding wiring harness behind rear headliner, & made the recommended fix. Navi now working. |
| 21700 mi | Satellite radio not working most of the time (NO SERVICE). Occassionally it will work for a few minutes but then stops. I think it's related to Nav antenna fix, dealer says all hardware checks OK. Waiting for software update from M-B. Dealer tried replacing software first, did not work. then replaced satellite radio unit, Did not work. then replaced sat. radio antenna. finally worked. antennas seem to be a problem on this vehicle - both GPS and Sat. Radio failed |
| 26040 mi | Battery failed and not holding charge. Dealer found 2 failed relays. Battery and relays replaced. |
| 310 mi | Burnt out LED moduale. |
| 42346 mi | Blower motor of climate control replaced. |
| 45607 mi | Second time that blower motor of climate control replaced. |
2009 Mercedes-Benz C-Class 4dr Sedan
228-horsepower 3.0L V6 7-speed shiftable automatic RWD
| 20000 mi | Mold in AC Evap core causing bad smell. Cleaned evaporator. |
| 24000 mi | Condensation inside diver's side xenon headlight assembly caused failure of headlight. Dealer replaced entire assembly. |
| 36700 mi | Moldy & smelly AC evaporator prob re-occured. Dealer cleaned system again. The problem hasn't resurfaced but it's only been a few weeks. |
| 76500 mi US $80 |
SRS malfunction warning. Self diagnosed as a failed belt-buckled sensor in belt latch. Replaced latch by unbolting seat. |
| 97000 mi US $150 |
Replaced headlight switch. Old switch causing right parking lights to remain lit when switch was in off position. |
| 104000 mi US $1200 |
System leaking, replaced expansion valve and recharged. |
| 220000 mi US $215 |
replaced battery |
| 12000 mi | The COMMAND knob no longer worked. Engineering Menu Log states it lost COMS with HU. The knob module was replaced. |
2009 Mercedes-Benz C-Class 4dr Sedan
228-horsepower 3.0L V6 7-speed shiftable automatic AWD
| 29000 mi | Electrical plug/harness to left rear light assembly failed causing the entire light assembly to fail. Replaced electrical plug/harness. |
| 31000 mi | left rear side marker light out; headlights adjusted for proper projection |
| 39000 mi US $798 |
Replaced fog light and performed scheduled maintenance |
| 148000 mi US $16 |
Right front low beam head lamp replaced |
| 186000 mi | Right rear taillight wire loose - causing dashboard warning messages. Right front headlight bulb out - replaced. |
| 75000 mi | Recall for rear sidemarker circuitry replacement. |
| 79980 mi C $25 |
Comand navigation button/scroll knob stopped scrolling when rotated. Common problem with these. Found DIY fix on youtube otherwise button cost 300$ + USD. Will try to fix soon. |
| 79980 mi | Comand button stopped scrolling lists when rotated. Common problem but system still usable without. |
| 51200 mi | The navigation system was broken the day I drove the (new) car out of dealership and by the time I reached the interstate the display was gone. Radio was working but nothing else was practically usable without the display. The unit had to replaced |
| 2000 mi | New nav system installed. |
| 8000 mi | there were couple of problems i went for: x. my ipod stopped charging suddenly and it turned out the ipod connector wasn't working x. my phone's bluetooth would start acting up with COMMAND center. it turned out it was blackberry tour |
| 9000 mi | the car wasn't driven for four days; i opened the trunk a few hours before i started to drive. the car wouldn't start and complained about ABS. as it turned out, it required a "jump start". no electrical components were on. |
| 19000 mi | The driver side door did not work with automatic locks. Lock malfunction with key fob or even when auto-locking function while driving. (the security alarm was setup, it was possible to manually push the button). |
| US $250 | The command system kept resetting itself every 30-45 seconds regardless of wheteher it was switched on or off. Dealer performed software upgrade. |
| 61000 mi | Because I had a major service scheduled I got the speaker changes for free (service cost me 3100!!). |
| 62000 mi US $1100 |
After my trip in December, which included major service and speaker changes, the front right indicator stopped working due to a control unit wiring issue. That was very coincidental but they didn't think it was related. |
| 66000 mi | The buttons for audio controls / phone were cross wired. After mechanic looked it they found nothing. When I picked up it was the same problem but then the theory was it was likely happening during high temperatures (car was over heated). |
| 31000 mi | fan motor needed replacement |
| 20000 mi | Satellite radio. |
| 27000 mi | Driver's Rear light housing shorted and required repair. Passenger replaced as well since dealer indicated it is a common problem. Under Warranty. |
| 22000 mi | A/C Stopped working. A/C refrigerant leaked out due to faulty O-rings. |
| 32200 mi | Command dial stopped working. Apparently a common problem. Not covered under Star CPO warranty |
| 34720 mi | Fan blower motor stopped working. Replaced under warranty |
| 1860 mi | re-program window auto-up function under warranty re-program window auto-up function under warranty |
| 3720 mi | correct rattle in heating system under warranty |
| 36000 mi | TPMS sensor was cracked and had to be repaired. Towed. |
| 57000 mi US $45 |
Both low beam headlights went within a week of each other. |
| 1000 mi | Satellite radio antenna was loose and had to be replaced; car was in the shop for one day. |
| 10000 mi | Satellite radio stopped functioning. Dealer replaced satellite radio receiver. |
| 27680 mi C $22 |
Melted wiring. right taillights, signal lights gone |
2009 Mercedes-Benz C-Class 4dr Sedan
228-horsepower 3.0L V6 6-speed manual RWD
| 40000 mi | right tail light harness assembly replaced due to short |
| 9000 mi | replace battery with weak cell found during first service A, and replaced under warranty |
2009 Mercedes-Benz C-Class 4-door
turbocharged 4-cylinder automatic 2WD
| 54960 mi ¤1200 |
AC Compressor failure and replaced with a denso compressor |
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