Upper Electronic Module (UEM)

Downloading software and replacing the control module
New software can be downloaded into the upper electronic module (UEM). 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 vehicle and Volvo central database is not OK, the database is updated with the relevant configuration. When this is complete the software and PINs are downloaded.
When installing a completely new upper electronic module (UEM) in the car, the PINs for the existing remote controls are downloaded to the control module. New remote controls do not need to be ordered after a software download or after the control module is replaced.
The control module is integrated in the rear view mirror. If the control module is replaced, the rear view mirror assembly must also be replaced.
The upper electronic module (UEM) must be unlocked using a unique PIN to download software or to add remote controls. VIDA automatically unlocks the control module. The PIN is obtained from the Volvo central database. It is sent with the software package if:
- reload software is ordered
- remote controls are being added or erased
- a new control module is installed in the vehicle and loaded with software.
Because of the unique PIN code, the control module cannot be moved between vehicles.
Three customer parameters can be programmed into the upper electronic module (UEM). 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.
Two different times for internal lighting can be programmed depending on the requirements of the customer. These times are parameters that are adjusted directly using VIDA:
- Short lighting time. This is the time from when the door is unlocked or closed or from when the engine is switched off until the interior lighting goes out. The time can be set between 5 and 255 seconds. Normal setting is 30 seconds
- Long lighting time. This is the time from when a door is left open or from when a light is lit using a button to when the interior lighting goes out. The time can be set between 0 and 255 minutes. Normal setting is 10 minutes.
In addition the degree of anti-dazzle of rear view mirrors with automatic anti-dazzle function can be set to customer requirements. The selectable values are Light, Normal and Dark. This programming is carried out by ordering and carrying out software downloads, especially for setting anti-dazzle.