Crash fuel shut-off: Function

Vehicles with an airbag are equipped with a crash fuel shut-off system. It reduces the danger of a fire in a crash as the fuel pump is switched off via the fuel pump relay. At the same time, with this set-up, an improvement in the comfort of engine startability is also attained. When opening the door, the fuel pump is activated for 2 seconds to build pressure in the fuel system.

When opening fuel system:

Observe safety precautions refer to Safety precautions when working on fuel supply system  .

• Check fuel pump relay according to wiring diagram with Test System V.A.G 1466 A, refer to Electrical Wiring Diagrams, Troubleshooting and Component Locations.