Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
NOTICE
To prevent the high-pressure pump from running while it is
empty (very tight tolerances) and to ensure that the engine
starts quickly after parts have been renewed, it is important to
observe the following:
♦ If components of the fuel system between the fuel tank and
the high-pressure pump have been removed or renewed,
the fuel system must be filled and bled before the engine is
started for the first time.
Bleeding fuel system
•
There must be sufficient fuel in the tank.
– Activate fuel pump ⇒ page 31 .
– After the fuel system has been bled, start engine.
– Allow engine to run for several minutes at mid revs, then
switch engine off again.
– Read event memory and erase if necessary.
– Carry out a leakage test of the fuel system.
Note
If there is still air in the fuel system, the engine can change to
emergency running mode during road test. In this case, switch
the engine off and erase the fault memory. Then continue with
the road test.
4.33
Air filter: cleaning housing and renew‐
ing filter element
Air filter element: removing and installing, 1.4 l TSI engines ⇒
page 95
Air filter element: removing and installing, 1.5 l TSI engines ⇒
page 97
Air filter element: removing and installing, 2.0 l TSI engines ⇒
page 98
Air filter element: removing and installing, common rail engines
⇒ page 98
Air filter element, common rail engine, engine code CUAA: re‐
moving and installing ⇒ page 100
Special tools and workshop equipment required
♦ Torque screwdriver -VAS 6494-
94
4. Descriptions of work
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
Note
♦ Always use genuine part for air filter element: see Electronic
parts catalogue (ETKA).
♦ Use a silicone-free lubricant when installing the intake hose.
♦ When installing the air filter element, ensure that it is proper‐
ly centred in the mounting in lower part of air filter.
♦ Hose connections and hoses for charge air system must
be free of oil and grease before assembly. Do not use lubri‐
cants containing silicone.
♦ Secure all hose connections with the correct type of hose
clips (same as original equipment): see Electronic parts
catalogue (ETKA).
4.33.1
Air filter element: removing and instal‐
ling, 1.4 l TSI engines
Removing
– Pull air intake hose -1- off upper part of air filter -2-.
– Loosen hose clips -1- and -2-.
– Pull air filter housing in -direction of arrow- off ball studs.
– Pull off both air hoses.
– Remove air filter housing completely, and place it down.
– Unscrew bolts -1-.
4. Descriptions of work
95
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
– Carefully release retaining tabs -arrows- on upper part of air
filter one after the other.
Note
The retaining tabs may break.
– Remove upper part of air filter housing and remove air filter
element.
Installing
– Check air filter housing, air mass meter and water drains for
soiling and clean them if necessary ⇒ page 101 .
– Insert air filter element -2- centrally into mounting in air filter
upper part -1-.
– Fit lower part of air filter -3- onto upper part of air filter -1-.
– Carefully engage retaining tabs one after the other.
– Screw in bolts -4-, and tighten them to specified torque.
– Check ball stud grommets -5- for damage, and renew them
as necessary.
– Position air filter housing centrally on ball studs, and press it
on firmly.
– Fit both air ducts to air filter housing.
– Fit hose clips.
96
4. Descriptions of work
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
– Fit air intake hose -1- onto upper part of air filter -2-.
Specified torque
Securing bolts
Nm
1.5
4.33.2
Removing and installing air filter ele‐
ment, 1.5 l TSI engines
Removing
– Unscrew securing bolts -arrows- from upper part of air filter
housing -1- and lift it together with air ducts to one side.
– Remove air filter element -2-.
Installing
– Check air filter housing, air mass meter and water drains for
soiling and clean them if necessary ⇒ page 101 .
– Insert air filter element -2- centrally into mounting in lower
part of air filter.
– Carefully fit upper part of air filter onto lower part of air filter
without applying excessive force. Screw in securing bolts
-arrows-, and tighten them to specified torque.
Specified torque
Securing bolts
Nm
1.5
4. Descriptions of work
97