Downloading Software and Replacing the Control Module

Downloading software and replacing the control module

Software downloading
Software downloads normally take place during manufacture of the car. However they are also required when replacing control modules.
When ordering software, the hardware and the software in the car is compared to the information in the Volvo central database. If the comparison is OK the software is downloaded to the control module.
If the comparison between the car and Volvo central database is not OK, the database is updated with the car configuration. When this is complete the software is downloaded.
For further information, see Design and Function, Software downloads.
If the power to the electrical power steering module (EPS) is cut, no new software download is required, as long as the software was previously loaded correctly into the control module.

Replacing the control module
When replacing the electrical power steering module (EPS), new software must be downloaded into the new module. New software must be downloaded because the software is optimized for the profile of the car.

Note! A diagnostic trouble code is stored if the software is not downloaded to a new control module, and the power steering function will not correspond to the profile of the car.