Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
4.20
All-wheel drive coupling: changing oil
Note
♦ On vehicles with all-wheel drive coupling the drain plugs and
sealing plugs of both systems are often interchanged ow‐
ing to the integrated housing construction of all-wheel drive
coupling and final drive. Caution must be exercised during
maintenance and servicing as incorrect fitting can cause the
all-wheel drive coupling and the final drive to fail.
♦ The all-wheel drive coupling and the final drive are one sys‐
tem with separate oil systems.
♦ -1- Sealing plug for filler hole of all-wheel drive coupling oil
♦ -2- Drain plug for all-wheel drive coupling oil
♦ -3- Sealing plug for gear oil filler hole
♦ -4- Drain plug for gear oil
Special tools and workshop equipment required
♦ Temperature gauge -VAS 6519-
♦ Torque wrench
82
4. Descriptions of work
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
♦ Used oil collection and extraction unit -VAS 6622A-
♦ -VAS 6291 A-
♦ Drip tray for workshop hoist -VAS 6208-
Draining oil
– Raise vehicle with lifting platform and position used oil col‐
lection and extraction unit -VAS 6622A- under all-wheel
drive coupling.
– Unscrew oil drain plug -2- and fully drain high performance
oil.
4. Descriptions of work
83
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
– Screw in new oil drain plug with new seal and tighten it to
specified torque. Oil drain plug is fitted with captive seal.
Specified torque
Oil drain plug
Nm
30
Filling with oil
– Remove oil filler plug -1-.
– Separate angled piece -B- from adapter -A- and screw
adapter fully in oil filler hole.
– Reconnect angled piece and route hose above drive shaft to
prevent sagging.
– Place drip tray for workshop hoist -VAS 6208- under final
drive.
– The vehicle can be lowered as soon as the hose above the
rear left wheel leads away from the vehicle.
Note
♦ The prescribed temperature range for oil during oil level
check is 20°C to 40°C.
♦ Observe the temperature of oil container when topping up
oil.
♦ After topping up oil, the temperature gauge -VAS 6519- can
be used for measuring oil temperature.
Oil capacity and oil specification ⇒ page 86
– Screw oil container -A- onto charging device -VAS 6291 A-
with valve closed -arrow-.
84
4. Descriptions of work
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
– Open valve -arrow- and hold oil container as shown in the
illustration.
– Fill enough oil in system with charging device -VAS 6291
A- until it starts to escape between adapter and gearbox
housing.
– Remove charging device -VAS 6291 A-.
– Unscrew adapter -A-.
– Let any excess oil flow out until it is only dripping out of hole.
The oil level is correct if oil is dripping out of the oil filler hole.
– Screw in new oil filler plug -arrow- with captive seal and
tighten it to specified torque.
Specified torque
Oil filler plug
Nm
15
4. Descriptions of work
85
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
Ensure adherence to prescribed temperature range during oil
level check if oil temperature was not within prescribed temper‐
ature range of 20°C to 40°C when topping up oil.
The oil temperature can be measured using temperature gauge
-VAS 6519-.
If the oil temperature is not between 20 and 40°C, adherence
to prescribed temperature range must be ensured by running
gearbox warm or allowing it to cool down.
Oil capacity and oil specification
Oil capacity, 4MO‐ ⇒ Rear propshaft and final drive; Rep. gr. 00; Technical data; Capacities
TION
Oil specifications
⇒ Electronic parts catalogue (ETKA)
4.21
High-voltage battery: checking charge
level
Checking charge level of high-voltage battery
Charge level display of high-voltage battery is located in instru‐
ment cluster.
The charge level must be determined for the first time on vehi‐
cle delivery.
Note
♦ The high-voltage battery must be charged to at least 80% at
pre-delivery inspection.
♦ During subsequent service inspections, the high-voltage bat‐
tery will be charged fully only if requested by the customer.
4.22
Maintenance of high-voltage battery
The high-voltage battery maintenance programme includes de‐
Passat GTE without Active Info Display
If the electric range is less than 10 km, the high-voltage battery
has to be charged until the electric range indicator displays 25
km at least.
Passat GTE with Active Info Display
If the charge level display indicates 1/4 or <1/4, the high-volt‐
age battery has to be charged until the charge level display
indicates 1/2 at least.
4.23
High-voltage battery: charging
Note
♦ The high-voltage battery must be charged to at least 80% at
pre-delivery inspection.
♦ During subsequent service inspections, the high-voltage bat‐
tery will be charged fully only if requested by the customer.
86
4. Descriptions of work
2024 VW Passat Owner's Manual
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