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Resources for the Repair and Maintenance of your Mercedes-Benz R500

Mercedes-Benz R500 Models:

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Mercedes-Benz R500 Problems

Drive Train -- Verified

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.

Engine -- Verified

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance. Communicating these specific symptoms to your technician can save diagnostic time.

Suspension & Steering -- Verified

A problem with the ball joints can cause a creaking noise. There is an updated part to remedy this problem.

Engine -- Verified

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.

Brakes -- Verified

The anti-lock brake system (ABS) modulator assembly may fail due to dirty brake fluid. Our technicians recommend a complete brake system flush every two years in order to help prevent this problem.

Mercedes-Benz R500 Recalls (Recent)

Body, Interior & Misc., May 3, 2006

RepairPal Expert Overview:

Some second row seats were manufactured without threads in the nut used to secure the seat belt buckle. In the event of a crash, the buckle may not hold as designed, increasing the risk of injury to a second row seat occupant. Dealers will inspect the second row seat and replace it as necessary. This recall is scheduled to begin on May 3rd, 2006. The Mercedes-Benz recall number is 2006040003.

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Drive Train, January 16, 2007

RepairPal Expert Overview:

The accelerator pedal may be loose due to insecure mounting studs and nuts. This could cause difficulty operating the accelerator. Dealers will inspect and install the mounting nuts of the accelerator pedal if necessary. The Mercedes-Benz recall number is 2006120008. This recall began on January 16, 2007.

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Electrical & Lights, August 1, 2008

RepairPal Expert Overview:

There is a faulty software calibration that affects several areas including shutting off the fuel supply in a collision. This could cause a fire hazard during an accident. Dealers will reprogram this software. The Mercedes-Benz recall number is 2008 070001. This recall began during August, 2008.

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Electrical & Lights, May 15, 2006

RepairPal Expert Overview:

The wiring harness to the starter motor may be routed incorrectly. This could lead to chafing of the protective sleeve on the engine mount cover. Over time, this chafing could wear through the sleeve and expose the underlying wiring. Damaged wires may result in a electrical short and loss of function of the vehicle's electrical system. Dealers will inspect the wiring and correct its routing. If necessary, the protective sleeve and/or wiring will be replaced. This recall is expected to begin on May 12, 2006. The Mercedes-Benz recall number is 2006040002.

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Mercedes-Benz R500 Questions and Answers

knock, 2006 Mercedes-Benz R500, San Antonio, TX

When I make turns there is a knocking that I can feel in the floor board.

russ 101, 2006 Mercedes-Benz R500, Hammond, NY

hello i need wheel hub torque specs

mrbrick, 2006 Mercedes-Benz R500, Franklin, VA

My battery is weak.

mrbrick, 2006 Mercedes-Benz R500, Franklin, VA

Repair manual for R500.

achea, 2006 Mercedes-Benz R500, Windsor Mill, MD

I had problem with my battery, turning the car off and playing music for even a second will kill my battery.

I have sudden battery issues and had to jump start the vehicle about 4times recently...

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Mercedes-Benz R500 Reviews

Loved the car when purchased, 27000 miles. Then the zeon assembly had to be replaced, the transmission valve body, the airconditioner compressor,all 4 air shocks, all 4 brake rotors and pads, new battery, and it still won't start. power steering reservior, now the rack and pinion steering is leaking a bunch. Have spent about $12,000 in repairs in the last 3 years. Mercedes was little help. I will never own another of their products.

I had that issue with mine and all I needed to do was replace my keys. Never had the issue again.

Great car after you fix--
Hard shifts 1-2 2-1 downshifts- New valve body needed 2k.
AC problems- Updated software fix Free.
Aimatic Shocks- Car sags at corners- Need to be replaced 1k.
Front differential- RRRRRR sound when you let off gas- replace 2k.

My car was under warranty all was repaired but if you are going to buy this car used don't do it unless the above problems have been fixed. ALL R500's have these problems check the forums.

Problem with rear leveling suspenion . Leaning to the driver,s side.

I recently purchased a 2006 Mercedes Benz R-500 and for the past two weeks the local Mercedes Dealer has had the vehicle due to the car frequently not starting. After 5 hours of diagnostic time the only thing the dealership can come up with is a recommendation to grease the flywheel to potentially fix the problem at an expensive price tag. They admit they do not know what's definitively causing the car not to start but have a hunch from the Mercedes Benz dealer forum that is the fix. Has anyone ever had the same type of issue?

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