Brightness Offset
Brightness offset is a PIA Personal Profile function. Brightness offset allows the customer to set and save his/her own individual HUD default brightness setting. Each time the HUD is switched on, this setting is used as the brightness offset for the HUD.
The brightness setting is adjusted with the controller via the CID. Any value between -10 and +10 can be set. The mid-position value is 0.
The value is transferred via the K-CAN to the HUD.
The brightness setting is automatically corrected in order to compensate for different light conditions. Compensation is based on signals from the rain and light sensor.
The automatic brightness setting is configured in such a way that no HUD brightness jumps occur.
The differing light conditions depend, for instance, on:
- Environmental conditions, such as day, night, sunshine, clouds, rain, fog, snow, etc.
- Surrounding structural features, such as tunnels, underground car parks, etc.
- The driver can adjust the brightness of the instrument lighting with the knurled wheel.
- From terminal 58g lights on, the HUD brightness is determined by the brightness setting of the instrument lighting.
The brightness is dependent on the following conditions:
- Dimmer-wheel setting
- Brightness offset
- Rain/light sensor, RLS