If you are uncertain in any way, have the work done by an authorized Volkswagen dealer or authorized Volkswagen Service Facility. Serious personal injury may result from improperly performed work. Make sure that you check the following items regularly. The best thing is to check them every time you refuel:

Windshield washer fluid level Windshield wiper and washer

Engine oil level Engine oil

Engine coolant level Engine coolant

Brake fluid level Braking, stopping, and parking

Tires and wheels Tires and wheels
Information regarding changing light bulbs ⇒ Changing light bulbs .

Warning
Refueling checklist
FuelVolkswagen Tiguan Service and Repair Manual > Wheels, Tires, Wheel Alignment: Driver Assistance Systems Front Camera -R242-
General Information
Note
If the camera can no longer recognize the lane markings due to poor
visibility, this could be caused by:
The camera visual field is dirty or icy. If that is the problem, it
should be corrected.
The camera view field in fogged over.
If the camera lens is obstructed by ...