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2009 Mercedes-Benz R350 Problems

Find the most common issues based on 2009 Mercedes-Benz R350 owner complaints.
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Most Common 2009 Mercedes-Benz R350 Problems

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light...
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 f...
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 of...
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2 Known 2009 Mercedes-Benz R350 Brakes Problems

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 abou...
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.

2 Known 2009 Mercedes-Benz R350 Drive Train 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 f...
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 ...

0 Known 2009 Mercedes-Benz R350 Electrical & Lights Problems

6 Known 2009 Mercedes-Benz R350 Engine Problems

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light...
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 of...
The Mercedes Benz R350 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 ar...

0 Known 2009 Mercedes-Benz R350 Exhaust & Emissions Problems

0 Known 2009 Mercedes-Benz R350 Heating & Air Conditioning Problems

0 Known 2009 Mercedes-Benz R350 Maintenance Problems

0 Known 2009 Mercedes-Benz R350 Miscellaneous Problems

3 Known 2009 Mercedes-Benz R350 Suspension & Steering Problems

A problem with the ball joints can cause a creaking noise. There is an updated part to remedy this problem.
The power steering reservoir designed for the Mercedes Benz R350 commonly leaks power steering fluid causing a screeching sound when turning the steering wheel, especially when the vehicle is stopp...

13
Known 2009 Mercedes-Benz R350 Problems & Complaints

The Mercedes Benz R350 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 ar...
The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light...
The power steering reservoir designed for the Mercedes Benz R350 commonly leaks power steering fluid causing a screeching sound when turning the steering wheel, especially when the vehicle is stopp...
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 f...
When starting the engine after sitting for several hours, a knocking sound may be heard for several seconds. This is a common issue with the Mercedes Benz R350. There are three common problems that...
The engine in the R350 is known by Mercedes Benz to have issues due to a poorly manufactured gear on the balance shaft (also known as the counter-rotating assembly). Since the balance shaft gear is...
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 abou...
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 of...
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 ...
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.
When starting the engine after sitting for several hours, a knocking sound may be heard for several seconds. This is a common issue with the 2004-2010 Mercedes Benz R350 4Matic with the M272 engine...
A problem with the ball joints can cause a creaking noise. There is an updated part to remedy this problem.
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