The following jobs should always be carried out in the given order before working in the engine compartment :

Park the vehicle on a level and stable surface.

Depress and hold the brake pedal until the engine has stopped.

Apply the handbrake Braking, stopping and parking Brakes Parking .

Select the neutral position or move the selector lever to P Changing gear Changing gear Automatic gearbox see Automatic gearbox_0 Automatic gearbox see Changing gear_0 Automatic gearbox Manual gearbox see Changing gear_0 Manual gearbox .

Stop the engine and remove the key from the ignition Starting and stopping the engine Engine and ignition Ignition see Engine and ignition_0 .

Allow the engine to cool down.

Children and other persons should be kept well away from the engine compartment.

Ensure that the vehicle cannot roll away unexpectedly.

WARNING
Preparing the vehicle for working in the engine compartment
Opening and closing the bonnetVolkswagen Touran Service Manual. Infrared Dryer -VAS6878
Definition:
Infrared Dryer -VAS6878-
Product Description:
The infrared dryer is used to dry paste, filler, base paint,
top coats and clear coats on vertical and horizontal surfaces.
...
Volkswagen Touran Service Manual. Tire Pressure Monitoring Sensor with Valve, Removing and Installing
Removing
Remove the union nut -1-.
Remove Tire Pressure Monitoring Sensor-2-
from rim well.
Installing
...