9-5 Sport Wagon (9600) L4-2.3L Turbo (B235) (2003)
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General
The SID is connected to the rheostat and controls the button lighting in the SID. It is also used to calculate the display lighting level.
The buttons are illuminated by 2 bulbs and the display by 4 bulbs, all easily accessible from the rear of the SID unit.
When the main lights switch is ON, bus information is sent: RHEOSTAT LEVEL, unit %. The information is used by the ACC, Audio, DICE and MIU
to regulate the button and instrument lighting.
Rheostat level 0% is sent if:
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The main lights switch is OFF and fuse 35 for the daylight driving lights is removed.
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The interior light exceeds a certain level.
The information is used by the ACC, Audio, DICE and MIU which then extinguishes the button and instrument lighting.
Service Message
