Programming and Relearning

Downloading software and replacing the control module

New software can be downloaded to the headlight control module (HCM).
When ordering software the vehicle's hardware and software are compared with Volvo's central database. If the comparison is correct the software is downloaded to the control module.
If the comparison between the car and Volvo's central database does not correspond, then the database is updated with the vehicle's configuration. When this is complete the software is downloaded.
For further information regarding downloading, see Design and Function, Downloading Software.
Headlamp Control Module (HCM) is installed on a console on the left fender liner.
Upon control module replacement, the position sensor for headlamp leveling must be calibrated. This is done via the vehicle communication input using the diagnostic tool.