Range Rover (LM) V8-4398cc 4.4L (M62) (2003)
Technical Service Bulletin # TECLTB00058
Date: 070525
Suspension - Air Suspension Diagnostic Procedure
No.: LTB00058
Issue: 1
Date: May 25, 2007
SECTION: 204-06
Air Suspension Diagnostic Procedures
AFFECTED VEHICLE RANGE:
Range Rover (LM)
VIN: 2003 thru 2005 models
THIS BULLETIN REPLACES NAS BULLETIN LM204-003. UPDATED INFORMATION IS SHOWN WITH ASTERISKS.
CONDITION SUMMARY:
INCOMPLETE DIAGNOSIS RESULTS IN UNNECESSARY COMPONENT REPLACEMENT
Situation:
Electronic Air Suspension air compressors are being replaced unnecessarily. When returned for inspection no defect is found. *It has come to Land
Rovers attention that the following incorrect repairs are being performed.
^
EAS ECU re-flashed and compressor replaced at the same time
^
EAS Compressor replaced without performing a re-flash*
Incorrect diagnosis can lead to unnecessary air compressor replacement. The component replacement may temporarily "repair" the vehicle by removing
symptoms, but if the root cause is not resolved the problem will re-occur.
Action:
*Engineering has determined that performing a re-flash as a stand alone repair with the latest calibration will resolve the majority of complaints.* This
bulletin provides additional problem diagnostic information to prevent unnecessary air compressor replacement. Follow the procedures in this bulletin as
a guide before replacing the air compressor when investigating air suspension issues.
PARTS:
MAV500010............Air suspension pressure relief valve
Qty
1
TOOLS:
T4/RDS Range Rover disc 20 or later
WARRANTY:
NOTE:
Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always
refer to DDW to obtain the latest repair time.
NOTE:
Under no circumstances should the air compressor's clam-shell casing be opened by the technician. This will result in a rejection of the warranty
claim. There are NO serviceable items within the air compressor clam-shell casing.
Diagnostic assistance for information only.
Normal warranty policy and procedures apply.