2008 Mercedes-Benz E350 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Mercedes-Benz E350 4MATIC

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2008 Mercedes-Benz E350 4MATIC
$
214
to $
1,257
2008 Mercedes-Benz E350 4MATIC
$
281
to $
486
2008 Mercedes-Benz E350 4MATIC
$
279
to $
593
2008 Mercedes-Benz E350 4MATIC
$
175
to $
565
2008 Mercedes-Benz E350 4MATIC
$
2,358
to $
3,337

2008 Mercedes-Benz E350 4MATIC Problems

Oil Seepage on Back of the Cylinder Heads

The Mercedes Benz E350 4matic 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.

Check Engine Light and Engine Noise

The engine in the E350 4Matic 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 driven by the timing chain, which keeps the engine rotating synchronously, when it fails, the timing of the engine will change causing:

-Illumination of the Check Engine Light

-Rough Running Conditions

-Stalling

-Loud Rattle or Slapping Noise

-OBD Trouble Code P1200 and P1208

Correction for this issue is replacement of the balance shaft, or balance shaft gear. Replacement of the timing chain and tensioner should be done as well. The Mercedes Benz dealer may cover some or all of the repair cost on select vehicles as a result of a class action settlement.

The Power Steering Fluid Reservoir Leaks

The power steering reservoir designed for the Mercedes Benz E350 4Matic commonly leaks power steering fluid causing a screeching sound when turning the steering wheel, especially when the vehicle is stopped. The power steering light may illuminate on the dash for more severe leaks.

This is caused by cracking in the plastic reservoir, or a hardened, brittle seal between the power steering reservoir and power steering pump.

Remediation involves replacing the power steering fluid reservoir, power steering fluid, bleeding the system of air, and replacement of the seal between the reservoir and power steering pump.

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2008 Mercedes-Benz E350 4MATIC Recalls

Load Leveling Rear Suspension Connecting Rod May Fail

On certain station wagon models, a connecting rod for the load leveling rear suspension system may fail. This could result in reduced vehicle control, increasing the risk of a crash. Dealers will inspect and replace the level control connecting rod as necessary to correct this concern.

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2008 Mercedes-Benz E350 4MATIC Reviews

Rated
based on 2 customer reviews
I bought a Certified Pre Owned E350 from a Benz dealer. Car had 58K miles on it. Received a one year comprehensive warranty through Merdedes Benz. About 10 months into ownership I started hearing what sounded like a tire noise. Took it to dealer, they said one of the tires was "out of round". OK, maybe I hit a pothole. Noise got worse over the next 4-5 weeks. Took it back. Dealer said emergency...
Love my car. Bought it last year at the certified pre-owned dealer in Arlington, VA. My biggest issue is the fact that this car was supposedly "certified" at 70 percent or better in a number of maintenance categories, yet I have had to bring it to the dealer three or four times already. The latest issue is the brakes. They claim I need front and rear brakes already. Car has 67,000 miles on...

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