Body Controls - No Start/Alarm Triggers On Door Opening
NO: 37-41DATE: 6-25-2007
MODEL:
S80, Chassis number 000850 - 47999
MODEL YEAR:
2007
SUBJECT:
No Start and Multiple DTC's Alarm Triggers when Opening Door
REFERENCE:
VIDA fault tracing/DTC's and associated procedures
DESCRIPTION:
A CEM (Central Electronics Module) SW bug has been found that may cause the CEM to not wake up after sleep mode intermittently.
The symptoms are as follows:
^ Remote controls will not work and if the car is equipped with Keyless drive (KVM), the alarm will trigger when you enter the car.
^ Car is totally dead.
^ No Crank/No start.
^ Not possible to communicate with the car via VIDA
A battery reset will recover all functions. After the battery reset is performed, there will be multiple network communication DTCs posted in many nodes as a result of the CEM not waking up (no CEM communication). See next page for an example of DTCs for a typical case.
PRODUCT MODIFICATION:
A new CEM SW was introduced in production from Chassis number 48000. The new CEM SW is available as a service fix.
SERVICE:
Perform a CEM SW upgrade p/n 30786042.
TYPICAL CEM SW BUG CASE DTC READOUT
Please see VIDA/ DTCs and
WARRANTY CLAIM INFORMATION