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Home >> Audi >> 2020 >> S4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 76 (General, Technical Data (Brake System)) >> 00 General, Technical Data >> Brake Inspection >> General Information

General Information

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles with Vacuum Brake Booster:

Brake control systems are inoperative when the ignition is switched off.

Vehicles with Electric Brake Booster (eBKV):

With the ignition out the brake control system is functional for some time.