Resources for the Repair and Maintenance of your Mercedes-Benz GL450
Mercedes-Benz GL450 Models:
Mercedes-Benz GL450 Problems
Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.
An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the front of the engine.
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.
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.
It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years in order to help prevent this problem.
Mercedes-Benz GL450 Recalls (Recent)
RepairPal Expert Overview:
The weld on the trailer hitch assembly may be insufficient and not support a load. If the hitch weld failed, a load may separate from the vehicle, causing a road hazard. Dealers will repair the trailer hitch. The Mercedes-Benz recall number is 2008050004. This recall began during June, 2008.Learn more »
RepairPal Expert Overview:
Mercedes–Benz is recalling certain 2008 GL-Class, M-Class, and R-Class vehicles for a possible defect in the driving pin used to control power steering oil pressure. If the pin breaks during normal vehicle turning, the steering assist will no longer operate, causing difficulty operating the steering wheel. Dealers will replace the steering gear in affected vehicles.Learn more »
Mercedes-Benz GL450 Questions and Answers
What is the motor oil required fir this engine?
my problem is that it takes a little be longer than usual to go up. and as soon I take a very bumpy road start to drop the front end and then it there is a message that reads, PUMP IS G...
There is an oil leak at the end of the valve cover facing the rear of the car. There appears to be a black plastic round cover about 1 1/2" in diameter where the oil leaks around. Anybody kn...
My front passenger side bottoms out when I hit a bump and the front suspension is operationg at a very low level and the rear is jacked up?
Mercedes-Benz GL450 Reviews
Sometimes my 450 will not downshift ansd once you stop it will not go into reverse until you restart thecar.
I love my GL450, I had a ML500 and sold it for this GL450 and never looked back.
Listed at $73500 with all options in 2007 a new 2011 is now over $94,000 with same options. getting priced too high