freewheel

you said it ! tons.....and tons.....this thing is madness !!!!!!

besides this, it's a great car but.....without back suspension, it's not going anywhere !!

freewheel

more on the toppic : yesterday and the day before where hot days, above freezing point at least : and the problem is back again, more then one inch diference between left ( higher ) and right ( lower )....

i'm thinking putting left sensor on right side and vice versa to diagnose a bad sensor ? make sense ??

Yu Chem

To my mind, the issue is inside the valve block. It releases the air when car is parked which supposed to lower suspension. These valves may react differently on the temp changes. There may be some water vapour in the system that locks one of the valves so that side does not drop.

If you connect your car to Star system at MB or any Indie, they have suspension calibration tool. It raises car to max, then lower it to min. Computer calculates the middle and sets the expected height to that position. Then it depends on mechanical parts to have that position as close to ideal as possible.

josworth

The scenarios and calibration reflects full Air Ride suspension.

The topic here is simply the standard self leveling rear suspension.

It does not need calibration. Uses simple level sensors and simple air control valve block.

Yu Chem

I saw them doing it in an Indie shop on my ex 2007 R350 non-airmatic.
I asked them to do it as the ride quality has detiorated since I've bought the car. Once calibrated the car became much more stable on the road much less tramlining.

josworth

I didn't say it COULDN'T be done..

It doesn't NEED to be done... It is just a simple two sensor system with air bag springs....

josworth

99% sure there is a leak somewhere.

Go ahead and do what you think will work.....

freewheel

SO last update about that weird problem !

car got to an other mecedes dealer ! and they figured one : the valve block was defect, two, the system needed calibraiton, got the car back today, after driving a ford suv for one week, HAPPY to get back into my own car again ! so one thing : never get any repairs done at mercedes blainville in quebec, they are F...... useless !

second, well, i'm happy it's fixed and over !

pagesk

Mine has been totally erratic since we owned the car. It always seems that one side sticks high, the other side is not deflated. I drive the car around the block a few times and then it is fine again for a few weeks or a month, then the other side is stuck high. I have soap tested, taken off and cleaned the sensors to make sure they are not bound up with mud. replaced the sensors, replaced the control block. Each time I think it is finally working correctly, only for it to fail again....The UPS man just delivered as set of coils springs and mounting hardware, time to go home and work on the car.

josworth

Smart move there...