Mercedes-Benz E320 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz E320 4MATIC

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Mercedes-Benz E320 4MATIC Problems

Oil Seepage on Back of the Cylinder Heads

Mercedes Benz E320 4Matic models manufactured between 2005 and 2009 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.

Premature Tire Wear Due to Cracked Lower Control Arm Bushings

Irregular and premature tire wear can be caused by the lower control arm bushings cracking, resulting excessive movement at the control arm pivot point. Ball joints can also wear out prematurely, causing similar tire wear symptoms. I some cases it may be necessary to replace the lower control arm, including bushings & ball joint to correct this concern.

The Differential May Develop Leaks From the Seals or Cover

High mileage or older vehicles commonly develop leaks from the differential seals and/or cover. Our technicians recommend a complete reseal of the differential unit whenever these leaks are repaired.

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Mercedes-Benz E320 4MATIC Questions

2001 Mercedes-Benz E320 4MATIC no left or right turn signals, no horn, no brights, no wipers, no washer. Last owner did his own brakes....abs/esp/bas/srs ..Please... can you give me some insight.... thank you.?? (2 answers)

Last owner did his own brakes....abs/esp/bas/srs and check engine light on with 5 malfunctions after shutting down engine...engine fan not going on....alternator was replaced, new right headlight replaced.....checked fuses....1 keeps popping.....??

having trouble with turn signals not working (1 answer)

turn signals not working, emergency flasher not working, horn doesn't blow, wipers do not work. This is a constant problem. Replaced turn signal control on steering column still does not work.

My ignition is lock and want turn after fooling with it I think it has to be replaced (1 answer)

Approximately how much would that repair cost

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Mercedes-Benz E320 4MATIC Reviews

I love it. It is a beautiful car and I feel very safe in it.
My pre-owned E320 is beautiful but with only 76k mi I have had major repair in '11 and 2 more to come i.e valve cover gasket replacement and what sounds like a brake boot so I've been told. I've had it for 5yrs, a light driver and keep on top of my maintenance but these problems are huge and getting costly and they say it's not even broken in! Bah! I feel these issues are too early in the life ...
why is the ride so rough

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