2007 Mercedes-Benz E350 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2007 Mercedes-Benz E350 4MATIC

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2007 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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2007 Mercedes-Benz E350 4MATIC Questions

Is there a recall in the works for this issue? (1 answer)

After checking for errors with OBD-II code scanner I got the following error codes
error code P0335-crankshaft Position Sensor A circuit malfunction
error code P2006-Intake Manifold Runner Control stuck closed Bank1
error code P0025-Camshaft Position Timing over-retard Bank 1

I replaced the...

My car gets the gas cap open red indicator and flashing gas pump now check eng o (2 answers)

Check engine light on I had fuel pump and gas cap replaced but check engine light still on. Car has 144000 miles on it

transmission loud shifting check engine light on (1 answer)

hard loud shifting check engine light on

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2007 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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2007 Mercedes-Benz E350 4MATIC Reviews

Rated
based on 3 customer reviews
Had rear noise evaluated - turns out it's my differential. Car has 63,000 miles on it so to be hit with $3,000 repair is just unbelievable. Dealer tells me it's going to take a while to get the part since they already have one in the shop waiting for 2 MONTHS. I could drive it but it can ruin the transmission so there it sits, been 1 month now. Very disappointed. They can't give me any infor...
I have a 2007 e 350 and my transmission act up sometimes when its shifting up or shifting down, one day my car would not change out of first for about a half mile i pulled over shut it off start it up again got back on the road and the transmission started working shifting like nothing ever happen.I think this problem should be a recall but the dealer its not.
Great Car

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