2011 Mercedes-Benz GL450 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2011 Mercedes-Benz GL450

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2011 Mercedes-Benz GL450 Problems

Brake Pads & Rotors May Wear After 20,000 Miles

As a way to increase braking performance, the brake pads and rotors are make of a softer material and may be in need of replacement after approximately 20,000 miles; owners should be vigilant about getting their brakes checked.

Cracked Driveshaft Flex Discs May Cause Driveshaft Movement/Vibration

A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.

Oil Seepage on Back of the Cylinder Heads

The Mercedes Benz GL450 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.

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2011 Mercedes-Benz GL450 Questions

when do I need to do a transmission service. my MB GL 450 has 35K ? (1 answer)

also when to change the battery?

thus misfire on the engine cylinder 3 causes improper shifting of the gears? (3 answers)

my wife got an accident in the garage,after she press P for parking on the button,the vehicle just slam on our garage wall,is it related to a diagnosis from mersedes that there was a misfire,they replace an assembled cylinder head.

how to replaces headlight bulbs? (1 answer)

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2011 Mercedes-Benz GL450 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.

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