S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

500SEL stiff rear suspension, squeeking

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Old 06-19-2007, 09:52 AM
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2000 S430, 1992 500 SEL, Range Rover HSE, 1975 450SL, 1984 Porsche 911 Convertible, 2006 MBZ E-350
500SEL stiff rear suspension, squeeking

I bought this baby brand new in 1992. It has 230,000 miles on it, and I only have 2 issues with it. I have a leaky evaporator, but don't use the car often enought to justify fixing it, and a stiff squeeky suspension in the rear end.

I have replaced both cumulators in the rear, and see no signs of any leaking in the rear struts, but when I hit a bump, it seems very stiff, and the slightest movement up and down in the rear end (even getting in and out of the car) squeeks like crazy on the left strut area. I lubed all of the bushings in the control arms, and tried lubing every place that I thought could squeek, but have had no luck in solving the problem.

Any ideas?
Old 06-21-2007, 08:26 AM
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1995 S600 Sedan
Struts could be shot. One of mine made a creaky noise. Had to be replaced. Do you have the ADS system? If so, it could be defaulted to FIRM mode.

http://v12uberalles.com/Adaptive_Damping_System.htm
http://v12uberalles.com/Rear_Struts.htm
Old 06-21-2007, 08:43 AM
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2000 S430, 1992 500 SEL, Range Rover HSE, 1975 450SL, 1984 Porsche 911 Convertible, 2006 MBZ E-350
Yes, I do have the ADS, and it makes sense that it is defaulting to "Firm" mode. How can I change it?

Thanks

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