Range Rover (LM) V8-4.4L (2009)
Accessory Control Display: All Technical Service Bulletins
Instruments - Erratic Display Unit Operation
No: LTB00234
Issue: 1
Date: 30 SEPT 2009
SECTION: 415
Integrated Head Unit Cycling Every 44 Seconds - Repair Procedure
AFFECTED VEHICLE RANGE
CONDITION SUMMARY:
Situation:
After turning the ignition 'ON', the audio system may boot up as normal and then perform the following cycle approximately every 44 seconds:
^ Audio sound cuts out
^ Navigation screen audio source icons 'gray' out
^ Orange LED on High Level Display Front (HLDF) flashes
^ Navigation screen defaults to the audio 'OFF' screen
^ The system will either reset to the Land Rover logo screen or reset the audio 'OFF' screen before recovering and starting the cycle again.
These issues may be caused by a software issue within the Integrated Head Unit (IHU) / Audio Front Control Module (ACM).
Action:
In the event of a customer concern of the above, refer to the Repair Procedure outlined below to update the ACM software.
PARTS:
No parts necessary
TOOLS:
IDS with latest IDS DVD Patch File; software first available on IDS DVD118.5 Patch File 14 Midtronics PSC-550 Vehicle Power Supply
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.
REPAIR PROCEDURE