Won’t rise
07-06-2020, 06:09 AM
#1
Newbie
Thread Starter
Won’t rise
Hi guys, i was driving my 07 s550 this weekend when I got the “car too low; sop driving” dash warning. After further inspection, I see the rear driver side is sitting low and does not rise with the rest of the vehicle. How can I determine the issue here? Compressor pump? Leak?
07-06-2020, 11:20 AM
#2
Super Member
You are on the right track.
Could be the LR air spring bladder, the line to the spring, or the valves that control the spring.
I believe the rear height is controlled by one sensor, so the sensor is likely not at fault.
Can you raise the car (maybe 3 corners) with the dash button & engine running? If so, the pump is working. And a bad pump would show all around the car, not just LR.
Best course of action is diagnostics with a Star system. It can help pinpoint the problem. Otherwise, you may be spending time and throwing parts at it.
I have not dug into this system yet so I can't give you too many details, just the general starting point.
Keep us posted on the results.
Could be the LR air spring bladder, the line to the spring, or the valves that control the spring.
I believe the rear height is controlled by one sensor, so the sensor is likely not at fault.
Can you raise the car (maybe 3 corners) with the dash button & engine running? If so, the pump is working. And a bad pump would show all around the car, not just LR.
Best course of action is diagnostics with a Star system. It can help pinpoint the problem. Otherwise, you may be spending time and throwing parts at it.
I have not dug into this system yet so I can't give you too many details, just the general starting point.
Keep us posted on the results.
07-06-2020, 11:35 AM
#3
Newbie
Thread Starter
You are on the right track.
Could be the LR air spring bladder, the line to the spring, or the valves that control the spring.
I believe the rear height is controlled by one sensor, so the sensor is likely not at fault.
Can you raise the car (maybe 3 corners) with the dash button & engine running? If so, the pump is working. And a bad pump would show all around the car, not just LR.
Best course of action is diagnostics with a Star system. It can help pinpoint the problem. Otherwise, you may be spending time and throwing parts at it.
I have not dug into this system yet so I can't give you too many details, just the general starting point.
Keep us posted on the results.
Could be the LR air spring bladder, the line to the spring, or the valves that control the spring.
I believe the rear height is controlled by one sensor, so the sensor is likely not at fault.
Can you raise the car (maybe 3 corners) with the dash button & engine running? If so, the pump is working. And a bad pump would show all around the car, not just LR.
Best course of action is diagnostics with a Star system. It can help pinpoint the problem. Otherwise, you may be spending time and throwing parts at it.
I have not dug into this system yet so I can't give you too many details, just the general starting point.
Keep us posted on the results.
07-07-2020, 01:03 AM
#4
MBWorld Fanatic!
You are on the right track.
Could be the LR air spring bladder, the line to the spring, or the valves that control the spring.
I believe the rear height is controlled by one sensor, so the sensor is likely not at fault.
Can you raise the car (maybe 3 corners) with the dash button & engine running? If so, the pump is working. And a bad pump would show all around the car, not just LR.
Best course of action is diagnostics with a Star system. It can help pinpoint the problem. Otherwise, you may be spending time and throwing parts at it.
I have not dug into this system yet so I can't give you too many details, just the general starting point.
Keep us posted on the results.
Could be the LR air spring bladder, the line to the spring, or the valves that control the spring.
I believe the rear height is controlled by one sensor, so the sensor is likely not at fault.
Can you raise the car (maybe 3 corners) with the dash button & engine running? If so, the pump is working. And a bad pump would show all around the car, not just LR.
Best course of action is diagnostics with a Star system. It can help pinpoint the problem. Otherwise, you may be spending time and throwing parts at it.
I have not dug into this system yet so I can't give you too many details, just the general starting point.
Keep us posted on the results.
The only way is to look at the air spring and the air tubing to it. Also the valve could be leaking, which the scanner would not know to tell about either.
