Level Control System Function Restricted Or MULTIFUNCTION Display Shows An "AIRMATIC: Service Required" Message (LI32.22-P-053659)
Publication date: 2015-05-28Reference number: LI32.22-P-053659
LEVEL CONTROL SYSTEM FUNCTION RESTRICTED OR MULTIFUNCTION DISPLAY SHOWS AN "AIRMATIC: SERVICE REQUIRED" MESSAGE
TECHNICAL SERVICE BULLETIN
Reference Number(s): LI32.22-P-053659 Version 2, Date of Issue:
May 28, 2015
| MERCEDES-BENZ: | BR 164 with AIRmatic (SA 489) |
| DESIGN GROUP: | 32.22 Air suspension |
| REASON FOR CHANGE: | Warranty coding |
COMPLAINT
Level control system function restricted (after pressing level control button the vehicle does not rise or lower), or the multifunction display shows an "AIRmatic Service Required" message
The following fault codes can be stored:
- 5505 -> Correction times when charging the air suspension are too long.
- 5508 -> The pressure line system is leaky.
- 5503 -> Correction time for charging central reservoir is too long.
CAUSE
Linkage for level sensor stuck. This results in an incorrect level value being sent to the AIRmatic control unit, which can result in faulty level control.
REMEDY
Level linkage replacement.
NOTE:
When the compressor is actuated with XENTRY it may be that the compressor test is failed, because there is no corresponding feedback (level change) to the AIRmatic control unit. The compressor is not the reason for the fault, and in these instances it must not be replaced!
CONTROL UNIT/FAULT CODE
CONTROL UNIT/FAULT CODE
| Control unit | Fault code | Fault text |
|---|---|---|
| AIRmatic (LF2) | 5505 | Recovery times during filling of air suspension strut is too long. |
| AIRmatic (LF2) | 5508 | The pressure line system leaks. |
| AIRmatic (LF2) | 5503 | Recovery time during filling of central reservoir is too long. |
PARTS
PARTS
| Part number | ES1 | ES2 | Designation | Quantity | Note | EPC |
|---|---|---|---|---|---|---|
| A 164 320 05 32 | Left front connecting rod | 1 | X | |||
| A 164 320 08 32 | Right front connecting rod | 1 | X | |||
| A 164 320 11 32 | Left rear connecting rod | 1 | X | |||
| A 164 320 06 32 | Right rear connecting rod | 1 | X |
WORK UNITS
WORK UNITS
| Op. no. | Operation text | Time | Damage code | Note |
|---|---|---|---|---|
| 54-0650 | MAINTAIN VOLTAGE | 32436 51 | Axle level sensor Incorrect setting | |
| 54-1011 | QUICK TEST | 32436 51 | Axle level sensor Incorrect setting | |
| 32-0641 | SUSPENSION DIAG WITH SDS | 32436 51 | Axle level sensor Incorrect setting | |
| 32-7700 | LEFT FRONT SENSOR | 32436 51 | Axle level sensor Incorrect setting | |
| 32-7701 | RIGHT FRONT SENSOR | 32436 51 | Axle level sensor Incorrect setting | |
| 32-7702 | LEFT REAR SENSOR | 32436 51 | Axle level sensor Incorrect setting | |
| 32-7703 | RIGHT REAR SENSOR | 32436 51 | Axle level sensor Incorrect setting |