Brakes - Repair (E30): Testing: Notes
CAUTION:
Cars with all wheel drive must not be tested on a brake test dynamometer longer than 60 seconds or faster than 4.5 mph (7.5 km/h), in order to avoid damaging the central lock. In other words, the total testing time for the front axle, rear axle, and parking brake must not exceed 60 seconds. If testing has to be repeated, wait at least 30 minutes to have the central lock cool down. Follow all other procedures according to equipment manufacturer.