First read and observe the introductory
information and safety warnings
Waxing
Waxing protects the paintwork. You will need to wax the vehicle with a good hard wax at the latest when the water does not clearly form small drops and run off the paintwork when it is clean.
Even if a wax solution is used regularly in the car wash, Volkswagen recommends protecting the paint with a coat of hard wax at least twice a year.
Polishing
Polishing is only necessary if the paint has lost its shine, and the gloss cannot be brought back by applying wax.
The car must be waxed after polishing if the polish used does not contain wax compounds to seal the paint.

NOTICE
Cleaning and changing windscreen wiper blades
Cleaning and caring for chrome and aluminium trim partsVolkswagen Touran Service Manual. Aquaplus Design and Multi-Color Paintwork
In order to achieve error-free design and multi-colored
paint applications using Aquaplus solid, metallic, pearlescent
base paint, pay attention to the important notes and in some
cases use special tools.
Preparation:
...
Volkswagen Touran Service Manual. Battery Charger -VAS5903- Maintenance Charging
Note
If the battery is discharged by an electrical consumer
during maintenance charging, the Battery Charger -VAS5903-
automatically supplies the appropriate charge.
Maintenance charging can be performed without time ...