Central Locking System – General Information and Vacuum Hoses

Central locking wiring 1 – pressure/vacuum hose 2 – front and rear door adjustment element 3 – fuel filler flap adjustment element 4 – bushing 5 – tailgate adjustment element 6 – central locking pump 7 – bushing 8 – connector

The central locking system has a vacuum actuator. After the vehicle has been idle for a long time and after replacing the pump, it operates only after the switch is activated repeatedly.

If the system is serviceable, locking of all locks takes effect 2 s after switching on. If the pump runs for more than 5 s, there is a leak in the system.

If there is a leak, the pump must not run for more than 50 s, after which the control unit in the central locking pump switches the pump off.

Vacuum Hose Repair

PROCEDURE

1. Cut out the damaged section with a knife.

2. Cut a replacement hose of the required length, for example Audi 533 862 225, and slide it over both ends of the vacuum line.

Disconnecting the A-Pillar Plug Connector

PROCEDURE

1. Connector –2– at the A-pillar is accessible after removing the A-pillar trim. 1 – cover, 3 – vacuum hose to the central locking pump.

CAUTION

To disconnect the plug connectors of the central locking vacuum hoses and adjustment elements, they must first be unlocked.

2. Squeeze connector –1– and disconnect it. 2 – door lock adjustment element.

3. Disconnect the connector.

Routing Vacuum Lines in the Door

PROCEDURE

1. Insert connector –1– into the A-pillar and connect it.

2. Secure vacuum hose –2– in clip –3–. 4 – bar.

3. Secure vacuum hose –1– in clip –2–.

4. Secure the connector in the door adjustment element.