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Home >> Volvo >> 2012 >> XC90 R-Design, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Miscellaneous Electrical - Design And Function >> Central Electronic Module (CEM) (2005-2014) >> Downloading Software And Replacing The Control Module
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Downloading Software And Replacing The Control Module

New software can be downloaded into the central electronic module (CEM). 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. The PINs for the existing remote controls are downloaded at the same time.

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.

When installing a completely new central electronic module (CEM) in the vehicle, the PIN codes are downloaded into the control module (when downloading software) for the following:

The PIN codes are downloaded automatically in the order procedure available in VIDA (Volvo scan tool). The PIN codes are retrieved from the Volvo central database and are sent in the software package when software is ordered for the new control module.

The central electronic module (CEM) is to the left of the steering column under the dashboard. The entire control module is removed from the car during replacement.

Because of the unique PIN codes, the central electronic module (CEM) cannot be moved between cars.

Five customer parameters (six for 5 door cars) can be programmed into the central electronic module (CEM). These customer parameters are stored in the control module but not in the Volvo central database. This means that the customer parameters must be reprogrammed when hardware is replaced.

The customer parameters which can be programmed are: