Before any work in the engine compartment, carry out the following
steps in the order in which they are listed ⇒
:

Park the vehicle in a safe place on a firm, level surface.

Hold the brake pedal down until the engine is switched off.

Apply the electronic parking brake to help prevent the vehicle from moving Braking, stopping, and parking.

Shift the transmission into Park (P) (automatic) or Neutral (manual only) Shifting.

Stop the engine and remove the key from the ignition switch Starting and stopping the engine.

Let the engine cool down sufficiently.

Keep children and others away from the vehicle.

Make sure the vehicle cannot move unexpectedly.

Warning
Getting ready to work in the engine compartment
Opening and closing the engine compartmentVolkswagen Tiguan Service and Repair Manual > Exterior Lights, Switches: HID Headlamp with Dynamic High Beam Control
General Information
Note
Always switch off headlamps with gas-discharge lamps and remove ignition
key before working on headlamps.
Automatic vertical headlamp aim control of headlamps with gas-discharge
lamps has On Board Diagnostics (OBD).
Familiarity with the function and operation of the ...