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
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
4.33.3
Air filter element: removing and instal‐
ling, 2.0 l TSI engines
Removing
– Pull vacuum hose -1- off upper part of air filter.
– Unscrew securing bolts -arrows- from upper part of air filter
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 centred 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
and tighten them to specified torque.
Specified torque
Securing bolts
Nm
1.5
4.33.4
Air filter element: removing and instal‐
ling, common rail engines
Removing
– Unscrew securing bolts -arrows- from upper part of air filter
and lift it together with air ducts to one side.
– Remove air filter element -1-.
98
4. Descriptions of work
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
Checking position of warm air flap
– Check position of warm air flap -1- in lower part of air filter.
The warm air flap must close completely at temperatures
above +12°C.
Note
The snow screen land warm air flap are not fitted on all vehi‐
cles.
Installing
– Check air filter housing, air mass meter and water drains for
soiling, and clean them, if necessary ⇒ page 101 .
– Insert air filter element centred 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
and tighten them to specified torque.
Specified torque
Securing bolts
Nm
1.5
4. Descriptions of work
99
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
4.33.5
Air filter element, common rail engine,
engine code CUAA: removing and in‐
stalling
Removing
– Unclip line -1- on upper part of air filter.
– Unscrew and remove bolts -arrows- from upper part of air
filter.
– Lift upper part of air filter -2-.
– Remove air filter element -3-.
Installing
– Check housing and water drains for soiling, clean if necessa‐
ry.
– Insert air filter element -3- centrally into mounting in lower
part of air filter.
– Carefully fit upper part of air filter -2- onto lower part of
air filter without applying excessive force. Screw in securing
bolts and tighten them to specified torque.
– Clip line -1- into upper part of air filter.
Specified torque
Securing bolts
Nm
1.5
100
4. Descriptions of work
Tiguan 2016 ➤, Tiguan 2021 ➤, Tiguan RUS 2017 ➤, Tiguan RUS 2021 ➤
Maintenance - Edition 12.2020
4.33.6
Fuel filter housing: cleaning
Note
♦ The air mass value may be falsified due to excessive soiling
or moisture. This would lead to a loss of power because a
smaller injection quantity is calculated.
♦ Please observe disposal instructions!
♦ The cleaning is carried out according to a separate calcula‐
tion.
– Check for salt residue, dirt and leaves in air mass meter and
air intake hose (engine intake side).
– Check water drain hose in lower part of air filter housing for
dirt and clogging.
– Remove salt residues, dirt and leaves from upper and lower
part of air filter housing using a vacuum cleaner if necessary.
4.34
Multi-purpose additive for diesel fuel:
adding
4.34.1
Specification for using multi-purpose
additive for diesel fuel
NOTICE
In the market mentioned below there is a particularly high risk
of deposits forming on the injectors and inlet valves owing to
the quality of the fuel.
To counteract the formation of deposits, a multi-purpose addi‐
tive for diesel fuel must be added.
Only additives compliant with VW 505 26 (multi-purpose addi‐
tive G 001 790 M3) may be used.
After adding the additive, it is extremely important to fully
refuel the vehicle to achieve optimal effectiveness of the addi‐
tive.
– During each change oil service, fill entire bottle of multi-pur‐
pose additive for diesel fuel into regular fuel tank.
Country
Russia
4. Descriptions of work
101
2024 VW Tiguan Owner's Manual
