Operational Test
- This test should only be performed after repairing or replacing, brake pads, rotors, brake hoses, brake servo, master cylinder, brake cables, or parking brake components.
- Turn ignition on. The ABS indicator light should come on. With differential locks NOT engaged (5000CS Quattro), turn ABS system on and drive vehicle above 4 miles per hour. The ABS indicator light must NOT come on. If correct, the ABS system is functional.