Fault in the brake systemFault in the brake system  - Auto-check control - Driver information system - Controls - Audi A4 Owner's Manual - Audi A4

A fault in the brake system should be corrected as soon as possible.

If the symbol there is a fault in the brake system. The symbol is accompanied by a driver message flashes in the display, there is a fault in the brake system. The symbol is accompanied by a driver message giving you more information about the fault. This message will disappear after about 5 seconds, but you can call it up again at any time by pressing the SET button:

Stop vehicle and check brake fluid level

Stop the vehicle.
Check the brake fluid level.
Obtain professional assistance if necessary.

Warning! Fault in ABS brake system. Contact workshop

Drive carefully to the nearest qualified workshop and have the fault rectified ⇒ Parking brake ! Please contact workshop.

Parking brake ! Please contact workshop

If the symbol appears after you switch on the ignition when the vehicle is stationary, please check whether you can release the parking brake. If this is possible, you should drive without delay to the nearest qualified workshop and have the fault rectified. If the parking brake cannot be released you should obtain professional assistance.
If this symbol should appear while driving, there may be a malfunction in the drive-away assist or the emergency brake functions. You may not be able to apply the parking brake. It is also possible that you cannot release the parking brake after it has been applied. Drive the vehicle to a qualified workshop and have the fault repaired.

If the ABS fails, the ABS warning lamp warning symbol  ⇒ will light up together with the brake warning symbol .. .

WARNING

  • Before opening the bonnet and checking the brake fluid level, observe the warning information on, Working on components in the engine compartment.
  • If the brake fluid level in the reservoir is too low, this could result in an accident. Do not drive on. You should obtain professional assistance.
  • If the brake warning lamp lights up together with the ABS warning lamp, this can mean that the control function of the ABS is out of action. As a result the rear wheels can lock relatively easily when braking. This could cause the tail of the vehicle to skid sideways. Drive carefully to the nearest qualified workshop and have the fault rectified.

The warning lamp  in the instrument Note

The warning lamp cluster will start flashing as well if there is a fault in the brake system. in the instrument cluster will start flashing as well if there is a fault in the brake system.