First read and observe the introductory information
and safety warnings
The cooling system is filled at the factory with a mixture of specially prepared water and at least 40% coolant additive G 13 (TL-VW 774 J). The coolant additive is dyed purple. This mixture of water and coolant additive gives the necessary frost protection down to -25°C (-13°F) and protects the alloy parts of the cooling system against corrosion. The mixture also prevents scaling and raises the boiling point of the coolant.
In order to protect the coolant system, the proportion of coolant additive must always be at least 40%, even if anti-freeze is not required in warm weather and warm climates.
If greater frost protection is required in very cold climates, the proportion of anti-freeze additive can be increased. However, the percentage of coolant additive should not exceed 60%, as this would reduce the frost protection and the cooling effect.
When topping up the coolant, a mixture of distilled water and at least 40% coolant additive - G 13 - or - G 12 plus-plus - (TL-VW 774 G) (both of which are dyed purple) must be used in order to obtain the optimum corrosion protection . Mixing - G 13 - with the coolant additives - G 12 plus - (TL-VW 774 F), - G 12 - (dyed red) or - G 11 - (dyed blue-green) will significantly decrease the level of corrosion protection and should therefore be avoided .

WARNING

NOTICE
Coolant and coolant additives can pollute the environment. Spilt operating fluids must be collected and disposed of properly and with respect for the environment.
Warning lamp and coolant temperature display
Checking the coolant level and refilling coolantRefrigerant, Keeping Records
Note
The laws and regulations listed below are applicable in
Germany. Different or additional laws and regulations may apply
in other countries.
Addresses in other countries can be obtained from the
relevant au ...
A/C Programmer -J127
This programmer switches the refrigerant flow direction
through the second evaporator if the temperature on the cooling
fins on the second evaporator lowers to the freezing point for
water (icing protection).
...
Indicator lamp in the vehicle key
Fig. 20 Indicator lamp in the vehicle
key
First read and observe the introductory information
and safety warnings
If a button on the vehicle key is pressed briefly, the indicator lamp (arrow)
flashes once. The lamp will flash several times if the button is pressed and held,
e.g. convenien ...