sho1sho1

When I went out this morning, my 2000 S430's rear was all the way to the ground, both sides. I turn on the car, the compressor will kick in, and the rear of the car slowly rises to normal height. Temperature outside is around -5 degrees F. When it gets below 0 degree F, the rear will sink to the ground! When it is above 0 degree F, the car is fine, no leak and no error message.

My question is:
1) Are both rear struts bad at the same time?
2) Does both rear struts have its own dedicated air supply coming directly from the valve block to the top of the rear strut?
3) Does it seem like a valve block problem?

I will try to get some leak spray and check the top seal in the rear struts tomorrow. So far, I know the compressor works, the relay is the new Hella relay. Both front struts are at normal height!

Any help will be great!

newton22

Sounds like a valve block issue.

Gondon

I just went to my car after 3 days of not driving and sitting in the freezing cold.

Its 19 F in Brooklyn, NYC right now.

My car was sitting low, So I can imagine at extreme tempertaures like below 0 F that it can sink.