| 1 | 0 | 3 | 4 | 3 | 4 |
2009 Mercedes-Benz M-Class repairs by problem area
Engine (36%)
Transmission and Drivetrain (1%)
Brakes and Traction Control (2%)
Suspension and Steering (15%)
Electrical and Air Conditioning (29%)
Paint, Rust, Leaks, Rattles, and Trim (5%)
Other (9%)
Chart based on 98 repairs.
2009 Mercedes-Benz M-Class repair cost distribution
$2500+ (4%)
$1000 - $2499 (19%)
$500 - $999 (16%)
$100 - $499 (19%)
< $100 (43%)
Chart based on 81 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2009 Mercedes-Benz M-Class
Engine not specified
| Mercedes-Benz M-Class in Ontario, Canada Mar 2013 - Aug 2013 | |||
| Apr 201353960 miC $1200 | Major engine job to fix an oil leak, partially covered by warranty. | ||
2009 Mercedes-Benz M-Class 4dr SUV
turbocharged 221hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Ontario, Canada Jul 2013 - Feb 2016 | |||
| Apr 201586160 miC $140 | LED in rear tail light went out. a complete new assembly was the only answer | ||
| Jun 201589280 mi | Rear main seal is leaking. Losent a quart in two months. | ||
| Jan 201681220 mi | Still trying to diagnose the 18 faults. Looks like CDI computer. Replaced the Maf sensors but still hhave the same problem Wiring harness frayed at motor mount Both EKAS sensors defective, shutoff motor defective, EGR faulty and oil cooler seals changed, replaced ad blue tznk heater ( 2nd time in two years) | ||
| Mercedes-Benz M-Class in Brazil May 2016 - May 2021 | |||
| Apr 201670060 mi$100 | The tailgate/trunk was not closing. Removed the lock actuator, disassembly one of the mini 12v dc motors inside it and replace it. Now working fine. | ||
| Feb 201768820 mi$10 | CDI Inlet Port Shut off motor making the car going to limp mode. Remove the connector plug and insert a 4.7kohms resistor so the computer thinks it is still connected. Problem solved but MPG raised about 10%. | ||
| Jul 201772540 mi$300 | The tailgate/trunk not closing again. bought a new lock actuator and replace the entire part. | ||
| Sep 201776880 mi$90 | Change shock absorbers | ||
2009 Mercedes-Benz M-Class 4dr SUV
turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Ontario, Canada Jul 2015 - Mar 2016 | |||
| Aug 201582460 miC $2100 | Check engine light came on, emission problem diagnosed. 2nd time adblue heater needed replacement | ||
| Mercedes-Benz M-Class in Alberta, Canada Mar 2014 - Mar 2015 | |||
| Mar 201599200 mi | Wheel bearing Door lock replaced | ||
| Mercedes-Benz M-Class in Maryland, United States Mar 2014 - Jul 2014 | |||
| Jul 201490000 miUS $1800 | Diesel Emission Fluid tank heater | ||
| Mercedes-Benz M-Class in California, United States Mar 2010 - Dec 2016 | |||
| Dec 201025010 miUS $1426 | Windshield replacement due to crack caused by passing truck $1,426.25; mostly paid by my insurance. | ||
| Jan 201132477 mi | Previous repair (right front bearing) didn't fix problem; replaced left strut assembly Previous repair (right front bearing) didn't fix problem; replaced left strut assembly; replaced buttons at steering wheel due to squeaky noise. | ||
| Apr 201127670 mi | Replaced right front bearing N/C;That took several attempts to fix until the correct item was determined. This would have been a really expensive repair for the owner if this would not have been covered by warranty. | ||
| Jan 201232620 mi | lubricated squeaky shift paddles on steering column | ||
| Apr 201235866 mi | NOx sensor replaced under warranty for the first time; regular cost including air cleaner turbo seal would have been $1,350.92. | ||
| Sep 201242541 mi | Left rear central door lock inoperabel fixed under warranty; door lock assembly replaced; regular cost after 15% courtesy discount for 2nd repair of another door later was $834. | ||
| May 201350843 mi | Auxiliary heater of AdBlue (Urea) tank diagnosed as defective; MBUSA claimed not covered under emissions control warranty though it would not have passed SMOG test. Dealer paid ~$2,200.- from a slush fund. | ||
| Sep 201353277 miUS $834 | Right front door lock defective latch assembly; the 2nd on this car; first one fixed under warrant. MBUSA refused to cover anything as warranty had run out; dealer gave 15% discount - cost to me $834. | ||
| Jul 201460028 miUS $1351 | NOx sensor replaced for 2nd time; also EGR Temperatur Sensor and air cleaner turbo seal replaced. $1,350.92 | ||
| Sep 201456633 mi | NOx sensor replaced on April 5th, 2012 had shaken loose. Dealer fixed free of charge as it was their responsibility. | ||
| Oct 201466241 miUS $1676 | Turbocharger Intake Shut-off Motor was defective; no spare parts in USA available; had to be imported from Germany. $1,675.89 | ||
| Mar 201569000 miUS $504 | paid for Bad Glow Plug Control Module. In addition dealer fixed free of charge Turbo Pipe Gree O-Ring seal & V-ribbed belt. Engine oil leak and damage to belt caused by previous repair. | ||
| Sep 201575000 mi | Temperature sensor upstream of turbo defective and replaced; $516.06 plus sales tax Replaced 3 engine mounts due to leaks; $1,778.38 plus sales tax | ||
| Oct 201575500 mi | Vehicle lost power and went into limp home mode on freeway. Had to dive on emergency strip and reboot car at turnout. Car caused no other trouble. No error codes showed up when dealer tested; no charge. | ||
| Mar 201681000 miUS $5384 | 2 collapsed air suspension front struts and defective air compressor; all replaced; slow leak on right strut caused left strut & compressor to fail. Tire wear due to consequent bad wheel alignment required 4 new tires not incl. in cost above Turbo inlet pipe seals replaced $186.01 plus sales tax Transfer case input shaft seal replaced and oil replenished $807.84 plus sales tax Backup camera & module finally replaced after years of haggling. Intermittent outages usually when humid or rainy; eat. cost $2,400. Yes, you read that right. MBUSA and dealer paid as problem 1st appeared during warranty period. | ||
| Mercedes-Benz M-Class in California, United States Mar 2014 - Jun 2022 | |||
| Feb 201643900 miUS $150 | Engine failed to start, it would crank but not start. NO CEL, NO Add Blue lights. Towed to shop, where it started, no error codes were noted. Issues could not be duplicated. | ||
| Sep 201648000 miUS $480 | TPMS system, two of the sensors went out, replaced all four | ||
| Nov 201762000 miUS $2200 | Diesel Exhust Fluid heater replacement. | ||
| Dec 2021103000 miUS $2226 | Front Break pads and Rotors with system flush | ||
| Mercedes-Benz M-Class in California, United States Mar 2013 - Jul 2013 | |||
| Jul 201360000 mi | Oil cooler seals leaking. Fixed under goodwill warranty work otherwise it would have cost $2200 | ||
| Mercedes-Benz M-Class in Iowa, United States Jul 2013 - Mar 2014 | |||
| Dec 201372000 mi | Oil seal | ||
| Mercedes-Benz M-Class in South Carolina, United States Mar 2013 - Jun 2013 | |||
| Apr 201327000 mi | water leaked into the rearseat area of the car where computer piece got wet. Cars rear lights stayed on, front lights flashed continiously | ||
| Mercedes-Benz M-Class in Ontario, Canada Oct 2014 - Oct 2014 | |||
| Oct 201483700 mi | Door locks motors stopped working in 3 of the 4 doors | ||
| Mercedes-Benz M-Class in Maryland, United States Apr 2017 - Jun 2018 | |||
| Jul 201730000 miUS $500 | Blower motor had some issue | ||
| Mercedes-Benz M-Class in Connecticut, United States - Jan 2009 | |||
| Jan 2009 | Has about 14,000 miles. Back to dealer once to fix numerous small things: rear windshield wiper motor, right rear power window switch, rear seat belt retractor. What has been a nagging problem is the pollution control system. Has been back 4 times. | ||
2009 Mercedes-Benz M-Class 4dr SUV
503-horsepower 6.2L V8 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Wisconsin, United States Jan 2019 - Jan 2022 | |||
| Apr 2019120000 miUS $2300 | Rear air shocks | ||
| Jan 2022143000 miUS $2000 | Front air shocks | ||
| Mercedes-Benz M-Class in Washington, United States Mar 2018 - Jun 2022 | |||
| May 201886000 miUS $50 | whining noise coming from power steering pump... replace reservoir | ||
| Sep 201986000 miUS $200 | battery wouldn't hold charge | ||
2009 Mercedes-Benz M-Class 4dr SUV
382-horsepower 5.5L V8 7-speed shiftable automatic AWD w/low range
| Mercedes-Benz M-Class in Costa Rica May 2013 - Feb 2017 | |||
| Feb 201443400 mi$2800 | Rear air springs replaced. Rear turn light led Passanger and driver lock doors were not working. | ||
| Jun 201447120 mi$500 | Steering pump didn't work. Replaced for a new one. | ||
| Jan 2015$2100 | Door attenuator didnt work | ||
| Mar 201665720 mi$1000 | Some parts replaced | ||
2009 Mercedes-Benz M-Class 4dr SUV
382-horsepower 5.5L V8 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Illinois, United States Dec 2017 - Dec 2021 | |||
| Mar 201844000 mi | Possible defective thermostat | ||
| Jun 201845000 miUS $100 | door lock not functioning | ||
| Mercedes-Benz M-Class in California, United States Jul 2013 - Jan 2017 | |||
| Jan 201481200 miUS $670 | Rear right turnsignal LED array was burnt out. Part is integrated into taillight, requiring full tailight to be replaced | ||
| Oct 201480500 miUS $60 | LCD screen started to develop lines and lose color, eventually become illegable. | ||
| Mercedes-Benz M-Class in Washington, United States Aug 2013 - Jun 2022 | |||
| Nov 201349900 miUS $19 | Leakage in power steering fluid reservoir Broken clip related to trunk cover. | ||
| Feb 201451000 mi | Replaced thermostat. | ||
| May 201454300 mi | Replacing clips for tailgate interior panel. | ||
| Sep 201460000 mi | Tailgate issue. Occasionally would not latch. Replaced latch. | ||
| Dec 201461000 miUS $500 | Ignition coil. | ||
| Nov 2017116000 miUS $800 | Power steering pump replaced | ||
2009 Mercedes-Benz M-Class 4dr SUV
268-horsepower 3.5L V6 7-speed shiftable automatic RWD
| Mercedes-Benz M-Class in California, United States May 2016 - May 2017 | |||
| Sep 2016114000 miUS $50 | brake lights went several times in two months. Mercedes wants to sell you an expensive new unit. You need to find a mechanic who can clean the connection between socket and light. Mine got done for $50. | ||
2009 Mercedes-Benz M-Class 4dr SUV
268-horsepower 3.5L V6 7-speed shiftable automatic AWD
| Mercedes-Benz M-Class in Quebec, Canada Mar 2017 - Mar 2018 | |||
| Jan 201883700 miC $650 | wiper arms system | ||
| Mercedes-Benz M-Class in New York, United States Mar 2013 - Sep 2015 | |||
| Aug 201369000 mi | AC temp senors needed replacing | ||
| Sep 201485000 mi | AC not working consistently | ||
| Apr 201592500 miUS $1300 | Water pump seal and bearings | ||
| Sep 2015100000 mi | Ac would stop working intermittently in very hot weather | ||
| Mercedes-Benz M-Class in Pennsylvania, United States Mar 2013 - Sep 2014 | |||
| Jun 201342000 mi | DVD draining battery | ||
| Jul 201450000 mi | DVD was draining battery. Was not defective, just installed wrong when original DVD failed and was replaced by the dealer. | ||
| Mercedes-Benz M-Class in Colorado, United States Mar 2013 - Jun 2022 | |||
| Mar 201437000 miUS $836 | ignition would not sense the key fob. ignition starter switch was replaced. | ||
| Aug 201752000 miUS $900 | thermostat needed replacing | ||
| Sep 201753000 miUS $1400 | Both lock actuators on front doors needed replacing | ||
| Mercedes-Benz M-Class in New York, United States Mar 2013 - Jul 2018 | |||
| Feb 201564100 miUS $250 | Replace thermostat. | ||
| Aug 201680000 miUS $300 | Replaced Coil Springs | ||
| Jun 2018100000 miUS $350 | Replaced camshaft sensor magnets to solve P016 problem, but to no avail. Likely causes either: Balance Shaft, Camshaft Adjusters, or Timing Chain. | ||
| Mercedes-Benz M-Class in New York, United States Jun 2013 - Jun 2022 | |||
| Aug 201317900 miUS $650 | Basic oil & filter stop, brake calipers replaced, multi-point check & service recall. We wanted the truck checked from top to bottom. Great experience! | ||
| Feb 201523000 mi | Auxillary battery replaced under warranty. We were alerted by a dash indicator. Mercedes also told us that the main, original battery would also need replacement soon, including resets, at a cost of $400 or so. | ||
| Apr 201631000 mi | Ignition switch failed intermittently; we'd get a readout that key doesn't match the car. Then we'd turn it off, try it again, and eventually it would work. We got a loaner, told them no rush, and repair was warranty covered. | ||
| Sep 201632000 mi | One of the headlight bulbs went out. Dealer replaced it for free as a courtesy. | ||
| Feb 201735000 mi | CD deck won't eject discs, makes clicking noises for a few minutes on startup, needs replacement. New is expensive so getting a refurb from SoCal Mercedes, will replace myself. Radio works so no hurry. They replaced a headlight bulb for free | ||
| Aug 201737244 miUS $839 | I installed a recon nav/audio but no way to unlock "anti-theft (AT) warning message." Neither dealer, Socal parts or YouTube told me to expect this. Dealer removes unit, obtains pin from their MB internal network, performs start-up to unlock AT, plus software update and coding! Pathetic. This cost $215. With headlight bulb, inspection, and "B service" total was $839. N/C to "renormalize" the operation of all windows since one of the rears was slow. | ||
| Nov 201738000 miUS $380 | Right rear tire replaced. Could not be repaired with a plug so new tire fitted - road hazard warranty for the Continenals purchased 15K miles ago no longer in effect. Slow leak, onboard computer alerted us, dealer found a nail went through the inside sidewall. | ||
| May 201838802 miUS $325 | Warning light showed one of the stop light bulbs had failed. Dealer found contacts burnt, with the other side near failure. Installed "stop light socket updates" and two new bulbs. Labor was 235 and parts were 64. | ||
| Jun 201842500 miUS $322 | Left rear tire replaced, had been losing pressure for several months, so I just kept refilling it. | ||
| Jan 201947291 miUS $1420 | Battery dead, jumped vehicle to get to dealer, replaced battery; Blower motor replaced (it kept running, drain for fresh air intake box clogged malice Front parking lamp bulb replaced. | ||
| Aug 201952073 miUS $667 | "B" service + inspection. | ||
| Aug 202057590 miUS $3997 | Driver's side window switch panel replaced; "1 year/10K Service" performed; Replace spark plugs; Replace front & rear brakes/rotors; Replace rear springs (one was cracked, was told we had to do both malice Replace all wiper blades; Inspection. | ||
| Mercedes-Benz M-Class in Missouri, United States Sep 2015 - Jan 2016 | |||
| Jan 2016102000 miUS $320 | Thermostat. | ||
| Mercedes-Benz M-Class in Nebraska, United States Apr 2014 - Dec 2014 | |||
| Jun 201447000 miUS $375 | Serpentine belt was worn and squealing intermittently Rear seatbelts would not completely retract. MB offered goodwill warranty for labor costs. | ||
| Mercedes-Benz M-Class in Ontario, Canada Feb 2013 - Feb 2013 | |||
| Feb 201377500 mi | thermostat failed thermostat failed | ||
See TrueDelta's information for all SUVs
See TrueDelta's information for all Mercedes-Benz models.
