AWD Vehicles, Checking

Test on a One-Axle Roller Test Stand

• Only check the brakes and the front and rear axle with the "engine off".
• Always switch off the engine during a brake inspection on the one-axle roller test stand to prevent generating drive from one axle to another.
• Only star the engine to create the necessary brake pressure for the brake inspection.
• Then switch off the engine again.

Test Sequence:

• During this test, the wheels of one axle are driven in opposite directions, to prevent delivering power to the other axle.
• The test speed must not exceed 6 km/h (3.7 mph), otherwise the brakes may lock up due to the roller start-up delay (EDL regulation).
• Test stands approved by Audi meet these requirements.