Range Rover (LP) V8-4.6L (2001)
Body Control Module: Customer Interest
Electrical - Warning Lamps/Various System Malfunctions
Date: 28 October 2004
False BCU Input Signal
AFFECTED VEHICLE RANGE:
Range Rover (LM)
up to 4A162652
FALSE BCU INPUT SIGNAL
A false input signal to the Body Control Unit (BCU) can result in a series of symptoms (hazard lamps flashing, doors unlock, radio goes mute and the
interior lights illuminate). An electrical spike within the internal electrical circuits may be the cause of the problem.
REPLACE AND CONFIGURE THE BCU
Should a customer complain of these symptoms, replace the BCU and configure the new unit using T4.
DDW WARRANTY CLAIMS:
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
Normal warranty policy and procedures apply.
Material allowance is included in labor operation.
Connect T4 to the vehicle and load disc Range Rover 14 or a later version.
2. Begin a new T4 diagnostic session and perform the following observing all on-screen instructions:
Select "System Diagnostics"
Select "Vehicle Maintenance"
Select "ECU Renewal"
Select "Body Controller"
GTR lookup sequence is as follows:
GTR Home > NAS > Service Information / LM New Range Rover/2004 > Workshop Manuals > RR WSM Service Procedures > Bookmark
"CONTROL UNITS AND RELAYS/REPAIRS/Body Control Unit (BCU)" > Section 86.55.75