When I turn the wheel fast, it squeeks, either direction... doesn't matter.
It doesn't happen when I turn it slowly. It sounds like it's coming from the actual steering wheel, not the power steering pump.
Any ideas? Thanks

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)

plastic rubbing on itself?

Maybe it just needs the Steering shaft to be lubricated with mercedes approved grease...

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon

I have the same problem with the wagon. I had the power steering pump checked out and it is fine, as well as the fluid level. It is suppose to originate (previous searches) where the metal steering column goes through a rubber 'O' ring that needs lubricating but I've not gotten around to it.

be careful with the old air bag in the event you choose to delve into the steering column

-fad