Audi R8 Coupé Setting off Driving  Starting and stopping the...
Stop the vehicle.
Press the START ENGINE STOP button Fig. .
Steering lock 1)
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*
If necessary in an emergency, the engine can be switched off while the vehicle is still moving. Press the START ENGINE STOP button twice in quick succession or hold it in for longer than two seconds.
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 to use more strength to brake and steer the vehicle than you normally would. This would mean a greater risk of accidents and serious injury, because you cannot brake and steer 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 a few minutes or drive at a moderate speed to let the engine cool down before switching it off link.
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.

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