Telephone/Telematic Control Module -J526-, removing and installing: Notes

WARNING: This page is about a different car, the 2004 Audi S4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If the Telephone/Telematics Control Module is replaced, the OnStar(R) system needs to be reconfigured. See TELEPHONE/TELEMATIC CONTROL MODULE -J526-, REPLACING AND RECONFIGURING .
DO NOT exchange Telephone/Telematic Control Modules between vehicles!. Each module contains specific Station Identification (STID) and Electronic Serial Number (ESN) data unique to the VIN. This data is used by OnStar(R) and National Cellular Telephone Network to identify the vehicle and administer the customer's account.