This chapter contains information on the following subjects:
→ Warning lamp and coolant temperature display
→ Coolant specification→ Checking coolant level and refilling coolant
Never carry out any work on the engine coolant system if you are not familiar with the necessary procedures and if only unsuitable tools as well as incorrect operating equipment and fluids are available ! Have the work carried out by a qualified workshop if you are uncertain. Volkswagen recommends using a Volkswagen dealership for this purpose.
Serious injuries can be caused if work is carried out incorrectly.
Additional information and warnings:

WARNING
Coolant and coolant additives can pollute the environment. Spilt operating fluids must be collected and disposed of properly and with respect for the environment.
Coolant
Warning lamp and coolant temperature displayVolkswagen Touran Service Manual. Hoses, Repairing
General Information
A new repair concept has been developed for repairing washer
system hoses. Various individual hose connectors, adapters,
Ethylene Propylene Diene Methylene (EPDM) rubber hoses and
shrink tubing will be offered as replacement parts.
...
Volkswagen Touran Service Manual. Pressure and Boiling Point
The boiling point given in tables for a liquid is always
referenced to an atmospheric pressure of 1 bar (14.5 psi). If
the pressure acting on a fluid changes, its boiling point also
changes.
For example, water boils at a lower temperatur ...