

Engine (15%)
Transmission and Drivetrain (6%)
Brakes and Traction Control (1%)
Suspension and Steering (12%)
Electrical and Air Conditioning (47%)
Paint, Rust, Leaks, Rattles, and Trim (13%)
Other (7%)
$2500+ (0%)
$1000 - $2499 (1%)
$500 - $999 (7%)
$100 - $499 (26%)
< $100 (65%)
Engine not specified
230000 mi US $793 |
ac mod went out |
turbocharged 228hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
97980 mi $250 |
Battery replaced was not holding enough power to drive the auxiliary Webasto heater. (4 years live time for the battery) |
107880 mi $299 |
Heater Motor bearings making noise, motor replaced |
turbocharged 181hp 1.8L I4 5-speed shiftable automatic RWD
1860 mi | right front parking sensor intermittently coming on |
518-horsepower 6.2L V8 7-speed shiftable automatic RWD
19300 mi | A/C stopped pumping cold air |
382-horsepower 5.5L V8 7-speed shiftable automatic RWD
27500 mi | blower motor on a/c went out |
30000 mi | diode on alternator replaced due to TSB problem not resolved turned out to be the starter |
30500 mi | starter went bad |
54000 mi | The command control knob "spin to select" failed. Dealer replaced under CPO warranty |
88300 mi | Engine is slow starting. Dealer rep thought battery (less than 1 year old) needed replacing. Mechanic checked battery it was ok...they did not pursue the problem...probably waiting until extended warranty runs out. |
91700 mi | A continuation of previous report (Dec 2015)where my car was slow to start...dealer noted problem, no action, said battery was fine...in February 2016, car did not start...towed to other dealer....they replaced the starter. NO CHARGE. |
117000 mi US $767 |
I could not adjust the speed of the AC blower...stuck on low. Dealer replaced the blower regulator. |
20700 mi | Audio/Nav unit (comand) repeatedly inoperable for 20-30 min after startup - intermittent issue |
46000 mi US $300 |
Delayed starting, long crank(s) |
48000 mi US $400 |
Starter replaced |
76000 mi US $125 |
Starter went bad. The solenoid didn't engage at all. Replaced with the remanufactured Bosch starter from Amazon for $125. It's the exact replacement as Mercedes original starter. |
2000 mi | Software update for Command System requested by the dealer |
14000 mi | Engine starter hesitated - battery needed replacement |
23000 mi | Replaced starter motor. |
382-horsepower 5.5L V8 7-speed shiftable automatic AWD
48360 mi C $2000 |
Battery, alternator |
57960 mi C $300 |
Distronic failure + Blind spot monitoring malfunction. Total expense $1200 |
88040 mi C $470 |
Blower Motor and Resistor were replaced. Cost Blower Motor - $200 Cost of Resistor - $200 Labour - $70 |
109740 mi C $360 |
Original battery was slow to start the car on hot day with hot engine. After fully charging and testing battery we decided to change for new AGM battery. |
7760 mi | FR door lock failed to respond to electronic lock/unlock signals so the lock unit was replaced. I was given a new S400H courtesy car to drive for 3 days! It was worth having the repair looked after. |
157000 mi US $350 |
Starter needed to be replaced. Car had a sluggish start, replaced battery, sluggish start went away, and starter died 2 weeks later. |
72540 mi C $600 |
Software updates |
268-horsepower 3.5L V6 7-speed shiftable automatic RWD
80000 mi | Rt. rear window not operating. Dealer supposedly linked issue to door module, and after I told him to hold of on ordering the $500+ part, ordered it anyway. Found unplugged umbilical cord and "fixed" that myself, saving $500+. 2 year old Interstate battery was no good, so I replaced it myself. Unplugged rt. rear door cord caused srs malfunction to trigger. Cord was reconnected and malfunction light was reset via obdII by me. |
83000 mi US $140 |
Replaced oem alternator. This was not a fun job. and now the TPMS system refuses to work. Since replacing the alternator, the TPMS light is on, and the system is not functioning. It also seems to be impossible to find a remedy on line, despite numerous other owners complaining of the identical problem, and trying a multitude of remedies. |
84000 mi US $156 |
TPMS inoperative since alternator change out. Had it reinitialized. Working correctly now. |
86000 mi US $250 |
compressor bearing squeaking constantly due to seized up clutch. Replaced compressor, dryer, condenser, and expansion valve. Labor done by an independent shop. |
20000 mi | Keyless Go not working for 1 key (doors supposed to lock/unlock by touching handle and engine start/stop by pushbutton) |
22900 mi | Dealer determined it was a bad key. |
29200 mi | Battery died. Replaced under factory warranty. |
10000 mi | Power tilt for steering wheel failed. Took two days to repair after investigating problem and ordering part. Homelink operating improperly. One of buttons was operating sporadically and then failed totally. Dealer unable to locate a problem per se. Switched to another button to see what happens before returning to dealership. Manufacturer agreed. |
13000 mi | Problems with Bluetooth connectivity and voice control functions. Installed new wiring harness and updated COMAND software. |
13600 mi | Occasional loss of sound from audio. Checked audio and updates and unable to duplicate. However, problem has not recurred. |
15000 mi | Intermittent loss of sound from all audio systems. Dealer did several checks per guidance from MBUSA and installed new software in control unit. |
15000 mi US $320 |
Battery died completely at 48 months and 20 days. No proration from MB. Replaced with MB battery with only a 24 month warranty for $320. MB Roadside Assistance replaced the battery. |
23600 mi | Right side parking light parking light occasionally comes on for no reason. Xentry check completed-no problem found. Normal maintenance performed. |
42000 mi | Actually three things. One was the Auto Headlight feature failed sometimes. Lights would not go out in full sun r would come on in middle of the night in the garage. Has the early switch with an Off position. After much discussion with M-B, they said would not repair even though I had reported when car under extended warranty. Dealership said they would replace the switch but I would have to agree to hold them blameless if any other systems in car were affected. Also said to leave in Auto position and not use Off position. Decided not to do as it works most of the time. Actually there was supposedly a TSB out on this very issue. Second problem is second failure of Easy Entry/Exit feature for driver's seat. Not repaired due to cost. Third problem is AC puts out too much from upper vents even when set on 74 or so and vents 3/4 shut. NPF by dealer. Easy Entry/Exit feature quit working for second time. Did not get it repaired as it cost too much and dealer had to keep the car for two more days to get everything coordinated (computers). |
25000 mi US $128 |
Auxilliary battery malfunction. Replaced the auxilliary battery. |
30000 mi US $136 |
Replaced main battery. |
41000 mi US $12 |
There was an odor in the cabin due to contaminants build up in the evaporator/heater core. I used a foam cleaner made specifically for this problem. No more odor. |
48000 mi | intermittent backup camera, removed trunk lid lining, cycled camera connection several times, problem has not returned. |
60700 mi US $16 |
Headlamp went out, took about 2.5 hours to replace, had to remove the wheel and inner fender to access the bulb. Also replaced the passenger side, that took about an hour, very difficult to reinstall the bulbs due to poor design. replaced with standard halogen bulbs |
63000 mi US $135 |
Old battery starting to go out, replaced . |
39000 mi | Heated seat on driver side stopped working. Replaced element myself. |
47000 mi US $80 |
Bluetooth connection kept dropping |
53000 mi | Adaptive headlight automatic highbeam malfunction. Driver side headlight turn off (only the headlight part). Normal function after a restart of the car. Mechanic found faulty wiring inside headlight assembly. Headlight works normal when automatic highbeam assist is off. Cost to change one headlight is $3000. Elected to do no repairs. |
1200 mi | replaced AM Radio antenna amplifier |
4960 mi | Oil and Oil Filter changed. Replacing new battery. |
14880 mi | Driver side power adjust lumbar support not working. |
12900 mi | battery gave out, dealer replaced it under the warranty |
12000 mi US $600 |
Front passenger window drops down an inch after being rolled up. Dealer "re-synced" the window. Problem reoccurs frequently and alternates between front driver and passenger side windows. |
12500 mi | Smell from AC when initially started. Deodorized, disinfected, fresh air filter replaced. |
15000 mi | Passenger seat would not adjust with the rear seats folded down. Re flash of software solved the problem. |
24000 mi | musty odor, second time in for this issue. They deodorized the AC Satelite radio not working properly, continually cuts out |
7000 mi | Climate control panel didn't light up and no control of A/C or fans (in 98 deg temps!). Dealer identifed problem as A/C Control Board Module, part ordered, and replaced. C-Class car provided at no charge by Dealer. Worked fine thereafter |
30000 mi | AM radio reception weak compared to my other cars. The AM antenna signal booster board was changed and it works fine now. |
37000 mi | Weak battery that at times would not be adequate to start engine. |
45700 mi | Fuel gauge indicated just under 1/2 tank. All of a sudden the dash display flashed low fuel with symbols and red color. Gauge indicated essentially empty. Stopped at next exit on I-65 and added 6 gal. One sensor in tank had error code. |
101000 mi US $180 |
Battery lasted ONLY 12 yrs 2 months! Shop said it was a record at their place. |
34000 mi | right channel on Ipod connector went out. board had to be replaced as well as needing new connector as well |
79400 mi | Collapsed AC lines created backup in system; unable to blow cold air into the car. Lines replaced; settings adjusted (presumably to get temp from dropping as low in the future) |
268-horsepower 3.5L V6 7-speed shiftable automatic AWD
30400 mi US $350 |
Changed main battery, checked charging system |
53000 mi | Battery failed under warranty |
88000 mi US $500 |
Replace cabin fan motor |
70000 mi US $150 |
command dial knob inoperative. replaced command knob |
59000 mi | replaced battery that had been replaced earlier in the year |
1000 mi | Bad sound quality from rear speakers |
4960 mi | the streaming bluetooth connection does not work properly. told that there is no upgrade for the command software. |
5000 mi | 2nd trip for Dead Battery in the last month.rnRoad Side Assistance came to jump the car.rnDiagnostics showed 2 low voltage codes stored.rnBattery was replaced. 2nd trip for Dead Battery in the last month.rnRoad Side Assistance came to jump the car.rnDiagnostics showed 2 low voltage codes stored.rnBattery was replaced. |
2000 mi | Auto trunk closer not working. |
11874 mi | Battery Repl. Cooling Fan Repl. Camshaft Wiring Harness Repl (Recall). Battery had to be jumped 2X in 2 wks & would not hold a charge. Other work a result of diagnose by dealer service dept. |
12274 mi | Headlights not working. Headlight Bulb (XENON) replaced. During visit a nail was found in left front tire and tire was not repairable. Tire replaced for 292.41, repl of HL Bulb was warranty. |
32000 mi | seam in leather seat came out and heated seats stopped working as a result |
63700 mi | Navigation system freezing up - no audio |
turbocharged 6-cylinder diesel automatic AWD
89900 mi | Replaced a rear parking sensor. This, and the sorroundings inside the bumper had melted. Unknown why, perhaps heat from the exhaust? |