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2008 Mercedes-Benz GL-Class repairs by problem area

Chart based on 265 repairs.

2008 Mercedes-Benz GL-Class repair cost distribution

Chart based on 35 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten 2008 Mercedes-Benz GL-Class repair histories. Log in or join us to see them all.

2008 Mercedes-Benz GL-Class 4dr SUV

turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD

Mercedes-Benz GL-Class in Texas, United States
Nov 2008 - Feb 2015
Mar 2009

6000 mi
Small oil leak caused by uninstalled o-ring at the factory.  
Apr 2009

8000 mi
another leak in engine caused oil to drip onto timing belt, breaking the belt and shutting the engine down on the Interstate Highway. Vehicle hauled to dealer on flatbed for repair. 
Jul 2009

15000 mi
fuel tank locking door broken---dealer replaced switch that locks fuel door to frame 
Nov 2009

20000 mi
Left rear seat raise/lower motor defective. Replaced with new part. 
Oct 2010

35000 mi
cam shaft problem reported by check engine light 
Dec 2010

37000 mi
unknown sensor causing check engine light to illuminate; sensor replaced 
May 2011

43500 mi
Liftgate stuck closed and would not unlatch 
Sep 2011

52000 mi
Tire pressure monitoring system failure. TPMS System still not working after 2 failed attempts by the dealer to resolve. 
Jan 2012

58000 mi
Tire Pressure Monitoring System (TPMS): malfunction finally diagnosed and repaired. 
Jun 2012

65000 mi
Strut replaced. Had to order part from Germany. covered under extended warranty. 
Sep 2012

72000 mi
The other front strut broke and had to be repaired under warranty. 
Feb 2013

78000 mi
Electrical ignition relay replaced. Truck had to be towed on flatbed to dealer. Battery died. 
Aug 2013

94000 mi
air suspension--blown air shock on left rear. I believe this is the 3rd or 4th one of these to blow since we bought the vehicle. 
Oct 2013

96700 mi
Power steering pump and controller went out. another busted air shock--fourth time this has happened on this vehicle 
Nov 2013

99300 mi
Drivers door lock no longer worked with electric door lock--had to replace 
Mar 2014

108000 mi
Leaky oil pump needing full replacement. Also caused damage to servo motors attached to oil pump and other parts. 
Apr 2014

110700 mi

US $500
Honestly I cannot remember the exact repair but it was something either to do with the power steering or ignition system. Cost me another $500. 
Feb 2015

132000 mi
A/C Compressor required replacement 2 middle seat seatbelts faulty. Had to replace 2 latches that no longer worked as well as the middle seatbelt strap. 
Mercedes-Benz GL-Class in New Jersey, United States
Feb 2009 - Mar 2010
Mar 2009

22000 mi
Replaced fuel pump. 
Mercedes-Benz GL-Class in Ohio, United States
Feb 2008 - Aug 2013
May 2008

2000 mi
Driver's window needed new motor, regulator and seals. Rear hatch intermittently not closing fully. Harsh downshifts from 3-2 and 2-1 and "crunching noise" 
Jun 2008

3000 mi
Homelink garage door transmitter not functioning properly 
Dec 2008

11000 mi
False check oil warnings displayed, despite correct oil level. Oil level sensor and bracket replaced under warranty.  Wind noise from driver's door corrected by replacing defective door seal. 
Feb 2009

12000 mi
Chrome trim strip above rear license plate and in front of tailgate handle fell off, requiring replacement of trim and housing to which it attaches. Rear tailgate not latching shut properly. Replaced latch but still not latching properly. Re-adjusted tailgate latch and seems to be working better, although still doesn't latch properly 100% of the time. 
Dec 2009

24000 mi
Oil leak  
Jan 2010

25000 mi
Release handle on second row folding seat broke off 
Jun 2010

30000 mi
Check engine light and glow plug light illuminated. Dealer found a loose bolt near the glow plug that was creating a short. 
Jan 2011

39300 mi
Check engine light came on - replaced exhaust pressure sensor. 
Apr 2011

43000 mi
Driver's window motor slow,replaced Satellite radio not working, replaced sat radio unit Rear hatch not closing properly, adjusted rear hatch again. 
Jun 2011

44000 mi
Check engine light came on and engine died while driving, with loss of power steering. Car had to be towed to dealer, both fuel pumps needed to be replaced. Seems to have resolved issue. Dash ashtray mechanism no longer working smoothly, would pop open too quickly, spilling contents. New ashtry installed. Key developed crack and was replaced under warranty. 
Aug 2011

46500 mi
Fuel guage stopped working correcting - showing about 1/2 tank less than actual level. Faulty wire found in left side fuel sending unit. Repaired. 
Dec 2011

52000 mi
Rear latch not closing properly in cold weather. Has been an ongoing issue since Day 1. 
Aug 2012

62500 mi

US $98
2nd Row seat release lever broke off - second time this part has broken - this time not covered under warranty or extended warranty - $98 repair 
Dec 2012

67000 mi
Car was leaking oil due to failed oil cooler. Oil cooler replaced. Exhaust fumes entering the cabin. Replaced faulty exhaust gasket. 
Feb 2013

68000 mi
Car leaking oil. Oil cooler replaced again. 
Mar 2013

68000 mi
Car leaking oil again and check engine light on; car in limp home mode. Oil intercooler replaced again and seals replaced. 
Apr 2013

69700 mi
Oil/Coolant leaking again 
Mercedes-Benz GL-Class in Georgia, United States
Feb 2008 - Dec 2008
Mar 2008

10000 mi
Rear a/c not cooling properly. Passenger seat creaks when occupied. Faulty rear door seal. 
Jul 2008

18500 mi
Rear A/C not cooling from roof vents. Part ordered 
Mercedes-Benz GL-Class in Oregon, United States
Oct 2007 - Jun 2015
Dec 2007

1000 mi
M-B insisted on reflash of ECU whenever vehicle appeared in shop. Need for reflash unknown - M-B wouldn't tell. 
Feb 2008

5000 mi
Owners manual had many missing critical pages with duplicate pages where the missing pages should have been. Manual replaced after many weeks wait. Improper "check engine oil level at next fillup" message appears often (3-4 time in 70 mi trip). Oil level always OK. Dealer says sensor defect causes message. No new (redesigned) sensors available. Problem is NOT new - 2007 CDI engines often had same ... 
Jul 2008

15000 mi
False oil level warning appeared sometimes. Oil never low. While in shop for problem 1) and 4), battery drained down twice - dead battery - "SOS telaid disconnected" message had appeared in multifunction display, and no crank, no start condition (for 4 tries) had occurred earlier. Rear Signal Acquisition Module 
Aug 2008

16000 mi
Driver door handle refused to 'retract' to 'ready' position. Handle OR lock (latch) malfunction. Parts back ordered. Shop did not take door apart to confirm source of problem. 
Jan 2009

24000 mi
C/S Low oil level warning in I/C again. Oil level not too low. Repeat of problem previously 'repaired'. Oil level sensor replaced with sensor with new part number. Oil pan replaced because original oil pan warped when it was removed - too much sealant.. Mercedes open campaign 2008110009 update rear SAM (Signal Acquisition Monitor) software. Prevents drawdown of battery under certain conditions and sequences of using REMOTE key to close hatch and then NOT open/close doors manually. Cars with keyless go. 
Feb 2009

26000 mi
Problem per description above. Resolution: Dealer replaced door latch assys for all four doors and installed updated springs for all 4 door handle bearing brackets 
Aug 2009

34000 mi
Parking brake handle not returning to correct position after releasing parking brake. Found guide for parking brake release cable was not holding cable correctly. Replaced guide 
Sep 2009

35000 mi
Parktronic audio (rear) alarm volume too low to hear over ambient, most situations. Dealer discovered original factory sound level was set at 80%, he adjusted to 100% for rear sensors, sound is now slightly louder. Tech found L parking light bulb burned out. Removed/replaced halogen headlight to replace bulb. MORE new software updates for rear SAM module. Newer software available and installed on top of new software previously installed. All values and coding checked out correct both before and after update. 
Nov 2010

52000 mi

US $1671
CEL on >2 wks. Local indy couldn't diagnose. Dealer found servomotor failed. This servo drives an air door inside intake manifold [provides engine braking?]. Servo was reported to have failed because oil dripped onto shaft, parts seized. 
Mar 2011

56000 mi

US $90
ABS light flashed, cruise control disengaged. After a short pause, able to reset cruise. Problem apparently related to wheel speed sensors/computer/modules. ABS, ESP systems involved. After flushing brake fluid, problems has not reappeared. 
Apr 2011

56000 mi
Exterior mirror, passenger side would not adjust electrically. Plug had disconnected, dealer reconnected plug. 
Sep 2012

76000 mi
CEL appeared. 1st trip to dealer found that diff pressure sensor at DPF filter failed high. Sensor replaced. Fault would not clear. New DPF ordered.  2nd trip DPF replaced. Same day CEL reappeared. 3rd trip found temp sensor found unplugged during DPF repair and not plugged back in. 
Dec 2013

95000 mi

US $3000
Bad oil leak from center of engine rear. O ring seals to oil cooler had failed - a defect known to Mercedes and the subject of a TSB. Dealer replaced seals with new design. An oil cooling line from the transmission to the radiator was also replaced (not warranty either). ONE of the leaks in the steering rack supply line was fixed by replacing that line. (no warranty there either). 
May 2014

100000 mi

US $65
Car stopped without warning while driving. After waiting, car started and ran normally but with MIL set (check engine symbol). Dealer ran diagnostic on fuel system and determined MIL was due to low fuel pressure. Fuel filter was NOT plugged. 
Aug 2014

103000 mi

US $30
Driver side rear view mirror quit working (second time this happened). electrical plug inside the mirror housing was disconnected. Mechanic was able to reconnect plug without any disassembly. 
Jan 2015

107300 mi
Driver's side rear view mirror turn indicator lights would occasionally not work and throw a MIL. Dealer diagnosed as requiring a new LED strip and wire harness. $$$$ Took it home, figured out how to take mirror apart, and it now works! 

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2008 Mercedes-Benz GL-Class 4dr SUV

382-horsepower 5.5L V8 7-speed shiftable automatic AWD

Mercedes-Benz GL-Class in California, United States
Sep 2007 - Sep 2011
May 2008

6000 mi
Broken door handle. 
Jun 2009

22000 mi
Oxygen Sensor causing Check Engine Light to come on. Door Handle loose, needed to be secured.  
Sep 2009

25000 mi
Faulty Fuel Pump 
Sep 2011

42000 mi
Air Struts making noise (clunking), and required replacement. Dealer Replaced air strut. 
Mercedes-Benz GL-Class in Colorado, United States
Nov 2007 - Jun 2011
Feb 2008

6000 mi
Electrical codes #2193 and #0436. Replaced right 02 sensor which controls the right side heater. 

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2008 Mercedes-Benz GL-Class 4dr SUV

335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range

Mercedes-Benz GL-Class in Maryland, United States
Sep 2007 - Sep 2014
Oct 2007

1000 mi
Tele-Aid module not working. Self-diagnosed, brought vehicle in, and dealer replaced Tele-Aid unit. 
Oct 2008

15000 mi
Driver's side rear outside door handle stuck in the open position. Door would not open from either inside or outside. Fixed at dealer under warranty. 
Nov 2008

16000 mi
Driver's side exterior rearview mirror cracked spontaneously. Replaced in 30 min. under warranty. 
Dec 2008

19000 mi
Driver's side front outside door handle stuck in the open position. Door would not open from either inside or outside. Fixed at dealer under warranty. Successful repair. Speaker in the door sounded like it was "blown", 1 day after repair work on same door. Returned to dealer, was told that speaker had short-circuited, but that it was an "unfortunate coincidence" rather than damage from previous door wo 
May 2009

23000 mi
Keyless Go functions inop on driver's door handle. Door handle replaced under warranty; 2.5 hours. 
Aug 2009

26000 mi
Driver's side pre-catalytic converter O2 sensor short caused "Check Engine" light to illuminate. Replaced by dealer under warranty at no cost. 
Dec 2009

30000 mi
Brought SUV in for tire replacement. Asked dealer to replace left front parking lamp as well. Replacing the bulb did not fix the problem, and after diagnosis, headlamp assembly was removed to access and repair wiring harness. Repaired under warranty, Brought SUV in for tire replacement. While vehicle was up on lift, mechanic noticed fluid leakage from left rear strut. Part ordered, replaced when it arrived next day. Repaired under warranty, no cost. Right rear exterior door handle will not function with KeylessGo. All other functions intact. Part ordered. SUV wouldn't start while out running errands. Roadside assistance first jump started SUV, then later replaced battery. Brought SUV to dealer for testing, who found bad alternator cable. Part ordered. 
Feb 2010

31000 mi
SUV wouldn't start while out running errands. Roadside assistance first jump started SUV, then later replaced battery. Brought SUV to dealer for testing, who found bad alternator cable. Part ordered. Right rear exterior door handle will not function with KeylessGo. All other functions intact. Part ordered. 
Mar 2010

31000 mi
Right rear exterior door handle replaced under warranty. SUV wouldn't start while out running errands. Roadside assistance first jump started SUV, then later replaced battery. Brought SUV to dealer for testing, who found bad alternator cable. Part replaced. 
Jun 2011

46000 mi
Underbody water leak allowed water into frame, which would flow under deceleration or nose-down parking, into well where computers were located. Multiple control units, wiring harnesses, and underbody panels replaced, welds sealed,  
Jul 2011

46 mi
Felt strip on sunroof wind deflector came off. Dealer replaced entire deflector at no cost under warranty. 
Oct 2011

51000 mi

US $100
Keyless Go functions not working with Driver's side rear door. Door handle assembly replaced. 
Jan 2012

55000 mi

US $360
Cam magnets needed replacing, which illuminated the "Check Engine" light. Replaced in 3 hours. 
Mar 2012

57000 mi

US $1350
Airmatic compressor housing cracked. Replaced. Both exterior door handles would not operate with KeylessGo. Replaced. Second time for both handles. 
Mercedes-Benz GL-Class in Alberta, Canada
Sep 2007 - Jun 2015
Apr 2008

2480 mi
Folding Mirror drivers side stopped functioning. 
Jun 2008

3100 mi
Satellite radio stopped functioning. Shop suspects antennae, but could not fix. 
Dec 2008

6820 mi
Satellite radio stopped functioning. Dealer replaced electronic part - now works. Also replaced trim under rear window that had gap caused during manufacturing. 
Jan 2010

9300 mi
Radio control unit stopped functioning. No SAT, no AM/FM, no bluetooth. 
May 2011

13020 mi

C $500
No audio on radio or satellite radio - control unit blown 
Jun 2011

13640 mi
Shop replaced Audio control unit. (Second time this has been replaced since vehicle was new). Found some frayed wiring was the cause of the control unit blowing. 
Jul 2011

14880 mi
Audio system wiring was replaced. All appears normal now. 
May 2013

23120 mi

C $950
Power steering hose blew 
Aug 2013

23560 mi
Camshaft solenoid needed replacement 
Sep 2013

23560 mi
Camshaft Solenoid Problem recurred on other side of engine (according to Dealer). 

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2008 Mercedes-Benz GL-Class 4dr SUV

335-horsepower 4.7L V8 7-speed shiftable automatic AWD

Mercedes-Benz GL-Class in California, United States
Nov 2007 - Aug 2010
Jan 2008

3000 mi
Driver door handle broken. 
Mar 2008

4000 mi
Broken driver door handle. 
Apr 2008

6000 mi
2nd trip for drivers window noise, parts ordered Squeaking driver's door seal. 3rd repair to drivers door, parts replaced this time. 
Nov 2008

15000 mi
Air compressor. 
Dec 2008

16000 mi
Rear liftgate will not close. 
Jun 2009

24000 mi
air pump 
Jul 2009

24000 mi
Another Air pump installed 
Aug 2010

41000 mi
TPMS broken when traded. 

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2008 Mercedes-Benz GL-Class Repair Histories

74 TrueDelta members own (or used to own) a 2008 Mercedes-Benz GL-Class. 43 of these members (58.1%) have reported repairs for their car. A total of 265 repairs to 2008 Mercedes-Benz GL-Classs--an average of 3.6 per vehicle--have been reported.

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2008 Mercedes-Benz GL-Class problems occur, check out our car reliability stats.