Volkswagen Passat 2015 Manual page 99

Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
may, however, be increased only to a maximum of -48°C.
Otherwise, the cooling effect will be impaired.
The coolant concentration must not be reduced by adding
♦
water even in warmer seasons and in warmer countries.
Frost protection must be guaranteed down to at least -25°C.
The temperature reading on the refractometer corresponds
♦
to the »ice flocculation point«. Flakes of ice may start form‐
ing in the coolant below this temperature.
Never reuse old coolant.
♦
Use only a water/coolant additive mixture as a slip agent for
♦
coolant hoses.
4.30.1 Coolant level: checking, replenishing
coolant if necessary
NOTICE
If the coolant expansion tank is sealed with a lead seal -1-,
seal it again after checking or replenishing the coolant level.
– Check coolant level in coolant expansion tank with engine
cold.
1 - Pre-delivery inspection
Coolant level on seam -3- of coolant expansion tank or above:
– No activity required, coolant level OK.
Coolant level between seam -3- and "min. mark" -4- on coolant
expansion tank:
– Replenish coolant up to "max. mark" -2-.
– Fit a new lead seal to coolant expansion tank.
Coolant level below "min. mark" -4-.
– Check cooling system for leaks ⇒ 4-cyl. injection engine (hy‐
brid); Rep. gr. 19; Cooling system/coolant.
– Replenish coolant up to "max. mark" -2-.
– Fit a new lead seal -1- to coolant expansion tank.
2 - 1st oil change service at 15,000 km or after 1 year
Coolant level at "MAX. marking" -2-:
– No action necessary.
Coolant level between "MIN. marking" -4- and "MAX. marking"
-2-:
Maintenance - Edition 11.2020
4. Descriptions of work
95