Warning light USA
Warning light Canada
When the ignition is switched on the ABS warning light will light up while the system is electronically interrogated and goes out when the engine is started if the check is not yet complete.
If the ABS warning lamp fails to go out, this indicates that ABS has been deactivated due to a fault. If the warning lights in the instrument panel and on-board computer light up while you are driving, this indicates that a fault has occurred. In both cases, normal braking, as in vehicles without ABS, is still retained.
The ABS system should, however, be examined at an authorized Porsche dealer immediately to prevent the occurrence of further faults.
The control unit of the ABS brake system is set for standard tire size. If non-standard tires are installed, the control unit may misinterpret the speed of the vehicle, because of the variant data it receives from the sensors on the axles.
To avoid damage to the clutch and transmission:
Should the free travel of the clutch pedal suddenly become larger, it could mean a malfunction of the clutch.