Audi A8   Controls   Driving  Starting and stopping the engine
Stop the vehicle.
Press the START ENGINE STOP button Fig. 1.
Steering lock1)
The steering will be locked if you switch off the engine with the START ENGINE STOP button and open the driver's door. The steering lock acts as a theft deterrent.
Emergency Off function
Should it be necessary in an emergency, the engine can be switched off when the selector lever is in position R, D or S. To switch off the engine (max. speed 10 km/h) press the START ENGINE STOP button.
WARNING!
  • Never switch off the engine until the vehicle is stationary. Otherwise you may not have the full benefit of the brake servo and power steering. You may need more strength to steer and brake the vehicle than you normally would. This would mean a greater risk of accidents and serious injury, because you cannot steer and brake in the normal manner.
  • Always take the key with you when you leave the vehicle. Otherwise the engine can be started or power-operated equipment such as the electric windows can be used. This could result in serious injury.
Caution!
If the engine has been working hard for a long time, there is a risk of heat building up in the engine compartment after the engine has been switched off; this could cause engine damage. For this reason, you should leave the engine idling for about 2 minutes before switching it off.
Note
After the engine is stopped the radiator fan may run on for up to 10 minutes, even if the ignition is switched off. The fan may also start running again after some time if the coolant temperature rises due to a build-up of heat, or if the engine is hot and the engine compartment is heated up further by direct sunlight.
1) This function is not available on all export versions.

All images, logos and text are property of © Audi. This site has no relationship with the company Volkswagen - Audi Spain nor any of its affiliates worldwide. For more information.