Procedures

Telematics Emergency Battery, Switching On/Off

In order to avoid unnecessary discharge of the emergency (back-up) battery, it must always be switched off prior to disconnecting the vehicle battery, and switched back on after the vehicle battery is reconnected.

Should the existing Telephone/Telematics Control Module (J526) be removed and reinstalled, the emergency (back-up battery) must be switched off prior to removal, and switched on after reinstallation.

Should the Telephone/Telematics Control Module ( J526) be replaced and configured, the emergency (back-up battery) must be switched off prior to removal, replaced, and switched on after control module installation and coding => [ Telematics Emergency Battery ] Telematics Emergency Battery

Preparation:

- Connect and use VAS 5051/5052 in mode "Guided Fault Finding "

- Enter appropriate model, equipment and model year information and press ">" to confirm.

After all control modules have been registered and DTC memories checked:

- Press "Go to"

- Select: "Function/Component Selection"

- Select: "Body, (Rep. Gr. 01; 27; 50-97)"

- Select: "Electrical equipment" (Repair Groups 01; 27, 90-97 "

- Select: "01 - On Board Diagnostic (OBD) capable systems"

- Select: "75- Telematics USA"

- Select: "Functions - Telematic"

- Select: "J526 - Telephone/Telematic Ctrl. Module, service mode disco. battery "

- If necessary, press ">" to advance

Switching off:

- Select/press button "3 - Service mode activating (no load on emergency battery)"

- Follow the tester's prompts.

Switching on:

- Select/press button "1 - Service mode deactivating (normal operating condition)"

- Follow the tester's prompts.