Freeze Protection Fluid Contents, Checking And Filling If Necessary
Special tools and workshop equipment required
- Refractometer :T10007A
- Refractometer :T10007B
In countries or regions that there is no frost due to climate conditions, the freeze protection does not need to be checked.
The cut-off line can be read to obtain an accurate reading for the following tests. Place a drop of water on the glass using a pipette to improve the readability of the cut-off line. The cut-off line is now clearly recognizable on the "WATERLINE".
-- Check the concentration of anti-freeze additive using the Refractometer.
The refractometer scale -4- applies to the freeze protection for the windshield wiper/washer system.
Mixture Ratio
| Freeze protection to | Original washer fluid. Refer to the Electronic Parts information (ETKA). | Water |
|---|---|---|
| -17/-18 °C (1.4/-0.4 °F) | One part | Three part |
| -22/-23 °C (-7.6/-9.4 °F) | One part | Two part |
| -37/-38 °C (-34.6/-36.4 °F) | One part | One part |
-- Fill the windshield wiper/washer system fluids (only at customer request).
Only use original washer fluid year-round to fill the windshield wiper/washer system. Refer to the Electronic Parts information (ETKA).
Depending on the time of year a winter product or summer product with higher cleaning function should be used.
Ready to use windshield washer fluid (Ready Mix) does not need to be thinned with water.
Original washer fluid prevents the spray nozzles, receiver/dryer, and connecting hoses from freezing. Refer to the Electronic Parts information (ETKA).
Vehicles with spray nozzles must be filled with original washer fluid as this fluid has a low viscosity at negative temperatures. The complicated spray jet system could otherwise become blocked due to crystallized washer fluid that can affect the fan pattern of the spray. Original washer fluid assures that the spray nozzles remain functional even at low temperatures.
Use original washer fluid also in warm periods of the year. Refer to the Electronic Parts information (ETKA). The powerful cleanser removes wax and oil from the window glass without a problem.
Freeze protection in the windshield wiper/washer system must be guaranteed to approximately -25 °C (-13 °F) (approximately -35 °C (-31 °F) in countries with an arctic climate).