Indicator lamp TCS OFF: Diagnostics
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
A system fault affecting the ABS function will turn on the warning lamps for ABS, brakes and central warning.
If the bus message from TC/ABS is absent for 2 seconds, the TCS OFF and ABS lamps will come on. If the bus message is absent for a further 8 seconds the central warning lamp and brake fluid warning lamp will also come on.