Some common troubleshooting methods of shock absorbers(air spring suspension).
Fault code: C1322-001 Y51 assembly Y51y1 (left rear solenoid valve 1) fault (left rear axle shock absorber valve unit) is the left rear shock absorber on the ADS problem, this situation needs to replace the shock absorber.
Cause of problem troubleshooting:
1. Air compressor pump failure fuse-check detection of the compressor pump is working properly, check whether the fuse and relay of the air pump is normal, fuse burnage may also lead to the air compressor pump does not work. If it is a problem with the distribution valve blocks, then replace the valve block, see below valve blocks and the air compressor pumps.
Fault code: C1322-001: Y51 assembly Y51y1 (left rear solenoid valve 1) fault (left rear axle shock absorber valve unit) is the left rear shock absorber on the ADS problem, this situation requires the replacement of the shock absorber(air spring suspension strut).
Fault code: C5284 original Y63/6Y5 (automatic air suspension central accumulator inflator inflator valve) fault, that is, there is a problem with the distribution valve block, just replace the valve block and then clear the fault code.
In addition to these two examples, there are many different fault codes, as long as repair or change the parts according to the cause of the fault. The trouble would be shooted.
The second case is the MATIC-STOP, CAR TOO LOW! At this time it should be able to clearly see the body lying down, generally this situation is due to air suspension caused by air leakage. The car may lift up again when the car is started, but over time it will burn down the compressor pump. If there is a leak, the air pump needs to work all the time to maintain body height, and the air suspension compressor pump is not designed to work non-stop for a long time.
1. The compressor pump fault fuse-check detects whether the air pump is working properly, check whether the fuse and relay of the air compressor pump are correct, and the fuse is burned, which may also cause the air suspension compressor pump to fail.
2. Airbag shock absorber leak.
If the car is only one side lying down, it is likely that the position of the shock absorber leakage. Shock absorber leakage usually occurs in the airbag section, if the leak is serious, you can hear the sound of air leakage. If you are not sure that the air suspension strut can be removed, inflate it and place it in the water tray to see if there is a leak. The air spring corresponding to the leak can be serviced to see how the airbag shock absorber is serviced.
3. Distribution valve group leakage start the car to let the air pump work, and then spray soapy water on the distribution valve block and see if there is a leak. If it is a problem with the distribution valve, then replace the distribution valve.