2009 Mercedes-Benz GL550 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2009 Mercedes-Benz GL550

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2009 Mercedes-Benz GL550 Problems

Oil Seepage on Back of the Cylinder Heads

The Mercedes Benz GL550 may have engine oil seeping or leaking from the back of the cylinder heads. This is commonly misdiagnosed as leaking valve covers.

On the back of the cylinder heads there are three, in total, plastic expansion plugs that plug access ports to the camshafts. These plugs are well known for seeping oil, and leaking if left unattended. The oil will run down the back of the engine and eventually make it to the ground. 

Replacement of these three plastic plugs is extremely simple, and should be done as regular maintenance. The recommended interval for replacement is every 60,000 miles.

Transmission May not Shift into Drive Due to Failed Selector Module

The transmission drive selector module may fail resulting in the loss of gear selection capability. This condition can leave the vehicle stranded, and will require replacement of the drive selector module.

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2009 Mercedes-Benz GL550 Questions

why is my dash board showing check engine? (1 answer)

after i buy fuel

2009 GL550 getting a leftside headlight error on the dash (1 answer)

2009 GL550 getting a leftside headlight error on the dash- Changed the Xenon bulb but that did not resolve the issue. Any sugessions????

SRS Light is on and "visit workshop without shifting gears" is displayed. (1 answer)

I would like to mention that all the controls on the steering wheel don't work and the shifter does not work also.

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2009 Mercedes-Benz GL550 Recalls

Driver's Frontal Air Bag Inflator Ruptures And Sprays Metal Fragments

The driver's frontal air bag inflator may deploy the air bag with excessive pressure, resulting in the inflator rupturing and causing metal debris to be sprayed onto vehicle occupants. Dealers will replace the driver's frontal air bag module free of charge to resolve the concern.

Mercedes-Benz Recalls 2009 550 G-Class Vehicles Due to Fuel Line Problems

Mercedes-Benz is recalling 2009 550 G-Class models due to fuel line quick connectors that were not properly connected on the assembly line. In case of a frontal crash, the fuel pump may no longer function, which could lead to fuel loss. In the presence of an ignition source, a fuel leak can result in a fire. Dealers will check the connectors and install a new clamp free of charge.

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2009 Mercedes-Benz GL550 Reviews

Rated
based on 1 customer reviews
Best car I've ever driven in terms of ride, power, curb appeal, etc. Worst car I've ever had in terms of reliability. Airmatic suspension a nightmare--have had both front units replaced. One failed after replacement and had to get it done (fortunately under parts warranty). Numerous other issues (e.g. sill vanity lights, power folding mirrors, rear latch failure, EZ-GO power lock failure, e...

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