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 Owners Manual. Frequently asked questions
If you suspect that there is a fault in the vehicle or if your vehicle has been
damaged, read and observe the following information before contacting
a Volkswagen dealership or qualified workshop. You may also find useful information
in the index under the headings Things to note or Checklist. ...
Volkswagen Touran Service Manual. Round Connector Systems
Note
If necessary, housing securing mechanisms (secondary locks)
must be released or removed using specified tool before
releasing the contacts. Refer to
→ Chapter "Secondary Lock".
...