Air Suspension System Warning Lamp Illuminated - Vehicles Fitted With AMK Compressors Only (LTB00452NAS2)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2012-11-16
Reference number: LTB00452NAS2

AIR SUSPENSION SYSTEM WARNING LAMP ILLUMINATED - VEHICLES FITTED WITH AMK COMPRESSORS ONLY

TECHNICAL SERVICE BULLETIN

Reference Number(s): LTB00452NAS2, Date of Issue: November 16, 2012

LAND ROVER:	2010-2012 LR4 (LA); 2010-2013 Range Rover Sport (LS); 2010-2012 Range Rover (LM)
SECTION:	204-05
AFFECTED VEHICLES:	LR4 (LA) VIN: AA510742-CA638964 Model Year: 2010-2012; Range Rover Sport (LS) VIN: AA212147-BA299999; BA700000-DA768550 Model Year: 2010-2013; Range Rover (LM) VIN: AA304426-CA393413 Model Year: 2010-2012

NOTE: ISSUE '2'

CONDITION SUMMARY

NOTE: This condition may exist on vehicles originally fitted with AMK compressors (listed below) as well as any vehicles updated as per Technical Bulletin LTB00420 or LTB00438.

LR4

VIN: BA589535-CA603567

Range Rover Sport

VIN: BA708098-CA725317

Range Rover

VIN: BA356347-CA367232

Situation: On vehicles fitted with an AMK compressor only, the Air Suspension System warning lamp may be illuminated along with Diagnostic Trouble Codes (DTC) C1A36-01 or C1A13-64 stored in the Ride Level Control Module.

Cause: This may be caused by incorrect drive currents for controlling the compressor exhaust valve.

NOTE: Only vehicles fitted with AMK (not Hitachi) compressors may be affected by this condition and will have the necessary software update available.

Action: In the event of a customer concern of the above, refer to the REPAIR PROCEDURE outlined update the Ride Level Control Module software.

PARTS

No parts necessary

TOOLS

IDS with latest IDS-DVD and Calibration File; first available on IDS-DVD129.06 v.104

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.

DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.

WARRANTY INFORMATION

DESCRIPTION	SRO	TIME (HOURS)	CONDITION CODE	CAUSAL PART
Update Ride level control module software - LR4, Range Rover Sport	60.90.16	0.20	040	LR032902
Update Ride level control module software - Range Rover	60.90.16	0.20	0.40	LR033311

Normal Warranty policies and procedures apply

REPAIR PROCEDURE

NOTE: LR4, Range Rover Sport only: condition exists and software update only necessary for vehicles fitted with AMK compressor.

AMK compressor [1] - software update available
Hitachi compressor [2] - not affected; software update not necessary

NOTE: Range Rover only; condition exists and software update only necessary for vehicles fitted with AMK compressor:

AMK compressor [1] - software update available
Hitachi compressor [2] - not affected; software update not necessary

Turn ignition 'ON' (engine not running).
NOTE: IDS must be loaded with IDS-DVD129.06 v.104 or later.
Connect the IDS to the vehicle and begin a new Symptom Driven Diagnostics (SDD) session.
Follow the on-screen prompts, allowing SDD to read the VIN and identify the vehicle.
From the Session Type selection screen, choose 'Diagnosis'.
Select the 'Selected Symptoms' tab, and then select one of the following:
- Electrical > Instruments > Information and message centre > Information graphic display > Yellow warning triangle displayed
- Electrical > Instruments > Information and message centre > Message display area > Chassis
Select 'continue'.
Select the 'Recommendations' tab.
CAUTION: During this procedure, if SDD presents a question regarding compressor type, always select AMK. If unsure select 'EXIT' at this prompt and repeat this process after the facts are known. Failure to make the correct compressor type selection will cause SDD to install incorrect software.
From the Recommendations tab, select 'Run' to perform 'Configure existing module - Ride level control module' option.
- Follow all on-screen instructions to complete this task.
Exit the current session.
Disconnect the IDS and the Midtronics Vehicle Power Supply from the vehicle.