Mercedes Benz Truck ML 350 (164.156) Technical # LI32-22_P-47927-2 Date: 090917
Suspension - 'AIRMATIC' Service Required Displayed/DTC's
"AIRMATIC - SERVICE REQUIRED" IN DISPLAY
Topic Number LI32.22-P-047927
Version 2
Design Group 32.22 Air Suspension
Page 128
Date 09-17-2009
Validity Model series 211 with SA code 489 (Air suspension)
Model series 211 wagon with steel suspension
Model series 164 with SA code 489 (Air suspension)
Model series 251 with SA code 489 (Air suspension)
Model series 251 with electronic rear axle level control
Model series 221 with SA code 489 (Air suspension)
Reason for change Note within remedy section removed
Reason for block
Complaint:
Display message: "AIRMATIC - Service Required".
The following fault codes are entered in the control unit and displayed in the quick test:
FC 5320 Drain valve: Open circuit or insufficient valve current in model series 211, 219.
FC 5260 Drain valve: Open circuit or insufficient valve current in model series 211.
FC 5250 Drain valve: Open circuit or insufficient valve current in model series 251, 164.
Cause:
Possible cause:
Defective connecting cables to drain valve at AIRMATIC compressor. This results in setting of the above fault codes.
Remedy:
Throughly examine electrical connecting cable of drain valve in area of compressor for chafe marks and discontinuities.
Especially check the cable in the connector by pulling it gently and carefully examine the cables under the black insulation tape for discontinuity by
pulling and flexing them. Repair defective cables if necessary
Symptoms
Control unit/Fault code
Page 129
Parts
Work units
Validity
Page 130
Suspension - 'AIRMATIC' Service Required Displayed/DTC's
"AIRMATIC - SERVICE REQUIRED" IN DISPLAY
Topic Number LI32.22-P-047927
Version 2
Design Group 32.22 Air Suspension
Page 128
Date 09-17-2009
Validity Model series 211 with SA code 489 (Air suspension)
Model series 211 wagon with steel suspension
Model series 164 with SA code 489 (Air suspension)
Model series 251 with SA code 489 (Air suspension)
Model series 251 with electronic rear axle level control
Model series 221 with SA code 489 (Air suspension)
Reason for change Note within remedy section removed
Reason for block
Complaint:
Display message: "AIRMATIC - Service Required".
The following fault codes are entered in the control unit and displayed in the quick test:
FC 5320 Drain valve: Open circuit or insufficient valve current in model series 211, 219.
FC 5260 Drain valve: Open circuit or insufficient valve current in model series 211.
FC 5250 Drain valve: Open circuit or insufficient valve current in model series 251, 164.
Cause:
Possible cause:
Defective connecting cables to drain valve at AIRMATIC compressor. This results in setting of the above fault codes.
Remedy:
Throughly examine electrical connecting cable of drain valve in area of compressor for chafe marks and discontinuities.
Especially check the cable in the connector by pulling it gently and carefully examine the cables under the black insulation tape for discontinuity by
pulling and flexing them. Repair defective cables if necessary
Symptoms
Control unit/Fault code
Page 129
Parts
Work units
Validity
Page 130
