Telematics Control Module
Before removing Telematics Control Module, there is the possibility of reading out coding and reading coding in again into new Telematics Control Module after replacing, while using Vehicle Diagnosis, Testing and Information System VAS 5051 or Vehicle Diagnosis and Service System VAS 5052 with function "J499 - replacing Telematics Control Module".
After replacing, control module needs to be reconfigured via "OnStar" Telematics call center.
Removing
Before starting repair work, batteries must be disconnected! Refer to [For engine(s) AXQ, BMX, BHK, BWF, BAR, BAA, BKW] Removal and Installation .
-- Bring right front seat as far forward and up as possible.
-- Unclip air duct -arrow- under rear seat.
-- Remove seat rail cover in -direction of arrow-.
-- Remove both bolts -arrows-.
-- Remove control module as far as electrical wiring harness allows.
First, disconnect 42-pin connector from Telematics control module.
-- Press securing clip -1- and actuate locking lever in -direction of arrow 2-, to do so.
-- Disconnect both harness connectors for antenna wires from Telematics control module. Push in locking mechanism -arrow- and disconnect antenna connector.
Installing
Installation is performed in the reverse order of removal.
Do not exchange Telematics Control Modules between vehicles! Each Telematics Control Module has its own coding and an Electronic Serial Number (ESN) unique to the Vehicle Identification Number (VIN) of a vehicle. Based on these data, the vehicle is identified by the Telematics call center and allocated to the respective customer account.
Before removing Telematics Control Module, there was the possibility of reading out coding and reading coding in again into new Telematics Control Module after replacing, while using Vehicle Diagnosis, Testing and Information System VAS 5051 or Vehicle Diagnosis and Service System VAS 5052 with function "J499 - replacing Telematics Control Module". If reading out coding of malfunctioning Telematics control module was successful, coding must now only be read into new Telematics control module, there is no other coding to be carried out.
-- Code Telematics control module. Refer to TELEMATICS CONTROL MODULE, CODING .
-- Configure system with Telematics call center. Refer to TELEMATICS SYSTEM CONFIGURATION WITH CALL CENTER .