Jaguar XJ8 Misc Documents Battery Discharged After Vehicle Has Been Standing For a Few Days PDF

Technical
Service Bulletin
No.B419-04v3
27 February 2006
Reissue
Please replace the previous edition of this bulletin.
B419
-
04v2/2005
dated
13
Jan
uary,
which should either be
destroyed or clearly marked to show it is no longer valid (e.g. with a line across the
page).
Subject/Concern:
Battery Discharged After Vehicle Has Been Standing For a Few Days
Models:
XJ Range
VIN
-
range: G00442
-
REM = G47989
-
FEM = G42682
Markets:
All
Section:
419
-
00
Summary:
This Technical Bulletin has been issued to address customer concerns
of the vehicle
battery becoming discharged when the vehicle has been standing for a few days.
Version 3 of this Technical Bulletin has been issued due to the addition of final
VINs for the REM and FEM.
Cause:
It has been found that, on some vehicles, either the Rear Electronic Module
(REM) or the Front Electronic Module (FEM) is 'waking up' and powering the
complete vehicle electrical system. This will result in the quiescent drain
increasing for a period of approximately 40 minutes after which sleep mode
will be re-entered.
Action:
Should a customer express concern it will be necessary to first check and
record the 'Module Reset Count' readings from the FEM and REM using WDS
datalogger. Then after a period of time re-check and record 'Module Reset
Count' readings for FEM and REM using WDS datalogger. When comparing the
first and second set of readings, it can be determined if a fault is present.
Follow the Service Instruction outlined below.
Parts Required:
Description
Part Number
Quantity
Front Electronic Module (FEM)
C2C 22369
1
Rear Electronic Module (REM)
C2C 22368
1
Labour Time:
Operation Description
Operation No.
Time
Read recorded resets of FEM
& REM modules using WDS
data logger
86 93 53 0.3 hours
Front Electro
nic Module renew
86 80 41
0.6 hours