Fault-tracing information
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
The control module has read and not approved a transponder code because it was not stored. That can be because of the following:
- There are several Volvo keys with transponders to the same car or other cars on the key ring. The control module reads the key code from the wrong key or a mixture of codes from several keys when attempting to start the car.
The keys should hang free so that they do not affect the key being used.
- Attempts have been made to start the car with a Volvo key which is already programmed to another generation 3 immobilizer.
- Attempts have been made to start the car with a Volvo key before it was programmed into the control module as an approved key to the car.
- Attempts have been made to start the car with a Volvo key that is not one of the approved keys for the car.
- The fault occurred because of temporary interference in the communication between the transponder and the control module.