Heeraj

Hello!

This is my First Time Posting so please let me know if im in the wrong place.

I have a 2010 E550 I have done 90% of the maintenance myself and have never had a problem until this year.

One morning I realized the car was on the floor. started it up nothing didnt budge just sat on the floor, I left it be, went to work and tried it again. nothing. after reading the forums realized its probably the compressor and valve. i bought an aftermarket compressor. and a factory valve from Mercedes. (they wanted 1200 for a compressor) after replacing those 2 items she was back to life and running again. about 2 months later driving to and from work i realized the front is lower than the rear. the next morning the front was slammed and the rear was as high as could be. a friend with a snap on scan tool scanned it and found the valve body again. i took it back to the dealership i bought it and they refused to replace it due to it being an electrical part, i argued that it has been 2 months since i bought it and the warranty is 2 years. although i can agree that it is something electrical there is also a mechanical aspect to it. after talking with the parts manager i was able to get it replaced. that was all about a month ago. today leaving for work i see the dreaded "MALFUNCTION" light. after walking around the car the left( driver side ) is way lower than the right (passenger side). Im waiting to get it scanned butIm almost positive its another valve block. Has anyone else had this issue? i thought the first time maybe it was just a bad part but now a month later again? that would VERY ODD. I was thinking maybe the aftermarket compressor is some how causing this part to go bad? but they are not directly electrically connected? any thoughts? Im considering switching to struts but found 1 conversion kit that happened to be $2500 any other ideas?

I Appreciate everyones feedback ahead of time

rustybear3

One of the many, many, reasons I won't get another car with air suspension.

KEY08

Odds are that it will not be a bad valve block. You probably have a bad leveling sensor or sensors. They are not properly adjusting ride height.

Heeraj

rustybear3- ive never had a problem until now its been great and smooth,

key08- Unfortunately i hope so the driver side is evenly low i know there is 2 in the front and 1 in the rear

kajtek1

You need your own scanner to troubleshoot this car.
How old are air bags?
It is quite possible you have small leak and compressor works overtime, wearing itself prematurely. Unfortunately the car has no program that would make the driver aware of the issue, till whole thing collapse.
If you monitor compressor running time, you can stop the issue before it becomes the problem.

leardriver

Sorry to hear about this.
Maybe someday, a genius automotive engineer will invent some sort of coil spring that supports the weight of the car, and an amazing damping system that bolts in and takes away oscillations.

Heeraj

After Getting Scanned I got Code C157300- The Correction Time when Emptying is too long. There is a general failure- current,stored. any ideas? im thinking the pressure relief on the compressor ?

Agent-A01

What aftermarket compressor did you get?

Heeraj

One branded "Best Racing" from Ebay, Probably not one of my wisest choices but it was located in the same state as me so I could get it quickly

kajtek1

If you still have original compressor - rebuild kit for them cost about $20.
The valves will require some cleaning and silica baking, but nothing some dedicated teenager could not do.

Heeraj

unfortunately i threw it out. now waiting to see what this company will do for me with there 1 year warranty