Fig. 79 Metal-coated windscreen for infrared reflection with communication window (blue area)
Insulating glass windscreens have a coating which reflects infrared radiation. There is a non-coated area above the interior mirror (communication window) which ensures that electronic accessories, for example remote controls, can function properly.
The uncoated area may not be covered either from the outside or the inside nor may any stickers be applied to this area as the electronic components may otherwise malfunction.
Volkswagen Touran Owners Manual. Diesel particulate filter
First read and observe the introductory
information and safety warnings The diesel particulate filter filters out
soot particles in the exhaust gas. The soot particles are collected in the
filter and are burnt off. To assist in this combustion process, Volkswagen
recommends that you avoid ...
Volkswagen Touran Service Manual. Decorative Trims, Replacing, Bolted Decorative Trims
These disc wheels are equipped with replaceable decoration
elements. Note the following when installing.
Clean the thread in the disc wheel before screwing in the
new bolts.
...