Mercedes-Benz GL450 Repair and Maintenance

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

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.

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Mercedes-Benz GL450 Questions

I took it to be repaired. They added a/c coolant & I had cold air for 2 weeks- still with the chemical smell. Also began hearing a hissing type sound (like air leaking) when ac was first turned on & right after it was turned off. (This sound was not there before). After 2 weeks, same prob...

Why is my gl550 rear and back suspension low with a malfunctioning sign showing an arrow going up but it's not going up in anyway with awkward movement while driving tilting at any bump.

Will I need to replace the entire seat or is there a component that can be replaced.

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Mercedes-Benz GL450 Recalls

Seat belts are secured to the vehicle body at various points using special anchor bolts. These 2013 GL models are being recalled because the anchor bolts for the second row seat belts may not have been tightened correctly during vehicle assembly. If these bolts are loose, a belted occupant my not be properly restrained in the event of a crash, increasing the risk of personal injury. Dealers will inspect the affect bolts and tighten them as necessary.

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.

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.

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Mercedes-Benz GL450 Reviews

Sometimes my 450 will not downshift ansd once you stop it will not go into reverse until you restart thecar.

My third GL450 2013 had for 2000 miles when front brake vibration I am told is secondary to warped rotor/pad issue. Also noisy ventilation vent drivers dashboard with whistle other gl 450 owners have same complaints about. Lastly and most dangerous is engine hesitation after going from downhill to level car attitude causing unpredictable acceleration and danger. Also and maybe related is tracti...

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

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