Tiguan 2016 ➤ , Tiguan RUS 2017 ➤
Heating, air conditioner - Edition 06.2017
– Loosen nut -3- and remove earth wire -4-.
CAUTION
Risk of burns on metal surfaces of auxiliary air heater element.
The heater elements may become very hot.
Risk of burns to the skin.
– Wear protective gloves.
– Never touch the metal surfaces of the heater element.
– Separate electrical connector -2- by sliding locking element
-5- upwards and pressing catch inwards.
– Unscrew bolts -arrows-.
– Pull auxiliary air heater element - Z35- with auxiliary air heater
control unit - J604- -1- leftwards out of heater and air condi‐
tioning unit -6-.
Installing
Install in reverse order of removal. Observe the following:
Note
Ensure that the earth wire is in proper position and bolted on cor‐
rectly.
lk
Specified torques
♦ ⇒ “5.1 Assembly overview - heater and air conditioning unit”,
page 111
♦ Install central tube for dash panel ⇒ General body repairs,
interior; Rep. gr. 70 ; Dash panel central tube; Removing and
installing dash panel central tube
5.15
Removing and installing heat exchanger
⇒ “5.15.2 Removing and installing Valeo heat exchanger, right-
hand drive vehicles”, page 143
⇒ “5.15.3 Removing and installing Denso heat exchanger, left-
hand drive vehicles”, page 147
⇒ “5.15.4 Removing and installing Denso heat exchanger, right-
hand drive vehicles”, page 152
5.15.1
Removing and installing Valeo heat ex‐
changer, left-hand drive vehicles
Special tools and workshop equipment required
139
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Heating, air conditioner - Edition 06.2017
♦ Drip tray for workshop hoist - VAS 6208-
♦ Hose clamps to 25 mm - 3094-
lk
♦ Commercially available compressed air pistol
♦ Engine bung set - VAS 6122-
Removing
– If necessary, remove engine cover panel ⇒ Rep. gr. 10 ; En‐
gine cover panel; Removing and installing engine cover panel .
Vehicles with TDI engine
– Remove charge air cooler connecting pipe ⇒ Rep. gr. 21 ;
Charge air system; Assembly overview - charge air system .
Continued for all vehicles
– Place drip tray for workshop hoist - VAS 6208- beneath en‐
gine.
140
Rep. gr.87 - Air conditioning system
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Heating, air conditioner - Edition 06.2017
– Mark coolant hoses -2- and -3- so that they can be reconnec‐
ted to proper sides again later. The heat exchanger is de‐
signed for a certain direction of coolant flow only.
– Clamp off coolant hoses with hose clamps up to 25 mm - 3094-
-1- and -4-.
CAUTION
On a warm engine, the cooling system is under high pressure.
Danger of scalding by steam and hot coolant.
Skin and other parts of the body may be scalded.
– Wear protective gloves.
– Wear protective goggles.
– Reduce excess pressure by covering cap of coolant expan‐
sion tank with cloths and opening it carefully.
– Lift up retaining clips.
– Remove coolant hoses.
– Push a piece of hose onto upper union.
– Insert compressed air gun into end of hose.
– Place a container under the lower union and carefully blow
coolant out of the heat exchanger with a compressed air pistol.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
– Remove driver side knee airbag ⇒ General body repairs, in‐
terior; Rep. gr. 69 ; Knee airbags; Assembly overview - knee
airbag .
– Remove centre console trim in left footwell ⇒ General body
repairs, interior; Rep. gr. 68 ; Centre console; Assembly over‐
view - centre console .
lk
Vehicles with auxiliary air heater
– Remove auxiliary air heater element - Z35- with auxiliary air
heater control unit - J604- ⇒ page 137 .
Continued for all vehicles
– Cover the area beneath the connections for the coolant hoses
in the plenum chamber with impermeable sheeting and ab‐
sorbent paper, for example.
– Lift locking element -6- in -direction of arrow- and pull off clip
-5-
141
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– Pull coolant line -4- off heat exchanger.
– Unscrew bolt -3-.
– Remove screw-type clip -2-.
– Pull off coolant hoses -1- from heat exchanger.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
– Remove bolts -1-, -3- and -5-.
– Release retainer tabs -4- -arrows- and detach cover -2-.
– If noise insulation cannot be pulled out, cut open tabs on cover
-arrows-.
– Remove heat exchanger to left.
Installing
Install in reverse order of removal. Observe the following:
– Check heater slot for dirt with heat exchanger removed.
– If necessary, remove dirt or residue of leaked coolant.
Vehicles with TDI engine
– With auxiliary air heater element removed, check the heating
element slot for dirt and clean if necessary.
Continued for all vehicles
142
Rep. gr.87 - Air conditioning system
Tiguan 2016 ➤ , Tiguan RUS 2017 ➤
Heating, air conditioner - Edition 06.2017
– Check connection -3- of heat exchanger and connection -2- of
coolant pipes for damage or contamination.
– Clean and smooth sealing surface for seals.
– Moisten new seals -4- with coolant (or lubricate lightly with sil‐
icone grease) and fit them to coolant pipe -1-.
– Carefully slide heat exchanger into heater and air conditioning
unit to stop.
Note
When sliding in the heat exchanger, make sure not to damage
the connections and coolant pipes.
– Push coolant pipes into heat exchanger as far as stop.
NOTICE
Risk of heat exchanger malfunction due to defective seals and
leaks.
– Never pinch seals.
– Never cant coolant pipes.
– Slide on coolant pipes completely.
– Fit new clip -5- or screw-type clip -2- onto joint of coolant pipe
and heat exchanger.
– Tighten bolt -3-.
lk
– Check clip and screw-type clip for proper seating on connec‐
tions of heat exchanger and check coolant pipes. The coolant
pipes must not contact air distribution housing or any other
components.
– Fill up with coolant ⇒ Rep. gr. 19 ; Cooling system/coolant;
Draining and filling coolant .
– Read event memory and clear any entries displayed using
⇒ Vehicle diagnostic tester in “Guided Fault Finding” mode.
– Check operation of heater and air conditioning system.
Specified torques
♦ ⇒ “5.1 Assembly overview - heater and air conditioning unit”,
page 111
♦ Turbocharger; Assembly overview - turbocharger ⇒ Rep. gr.
21 ; Turbocharger; Assembly overview - turbocharger .
♦ Centre console; Assembly overview – centre console ⇒ Gen‐
eral body repairs, interior; Rep. gr. 68 ; Centre console;
Assembly overview – centre console
♦ Knee airbags; Assembly overview - knee airbag ⇒ General
body repairs, interior; Rep. gr. 69 ; Knee airbags; Assembly
overview - knee airbag .
♦ Assembly overview - charge air system ⇒ Rep. gr. 21 ; Charge
air system; Assembly overview - charge air system
5.15.2
Removing and installing Valeo heat ex‐
changer, right-hand drive vehicles
Special tools and workshop equipment required
143
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♦ Drip tray for workshop hoist - VAS 6208-
♦ Hose clamps to 25 mm - 3094-
lk
♦ Commercially available compressed air pistol
♦ Engine bung set - VAS 6122-
Removing
Removing
– If necessary, remove engine cover panel ⇒ Rep. gr. 10 ; En‐
gine cover panel; Removing and installing engine cover panel .
Vehicles with TDI engine
– Remove charge air cooler connecting pipe ⇒ Rep. gr. 21 ;
Charge air system; Assembly overview - charge air system .
Continued for all vehicles
– Place drip tray for workshop hoist - VAS 6208- beneath en‐
gine.
144
Rep. gr.87 - Air conditioning system
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Heating, air conditioner - Edition 06.2017
– Mark coolant hoses -2- and -3- so that they can be reconnec‐
ted to proper sides again later. The heat exchanger is de‐
signed for a certain direction of coolant flow only.
– Clamp off coolant hoses with hose clamps up to 25 mm - 3094-
-1- and -4-.
CAUTION
On a warm engine, the cooling system is under high pressure.
Danger of scalding by steam and hot coolant.
Skin and other parts of the body may be scalded.
– Wear protective gloves.
– Wear protective goggles.
– Reduce excess pressure by covering cap of coolant expan‐
sion tank with cloths and opening it carefully.
– Lift up retaining clips.
– Remove coolant hoses.
– Push a piece of hose onto upper union.
– Insert compressed air gun into end of hose.
– Place a container under the lower union and carefully blow
coolant out of the heat exchanger with a compressed air pistol.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
– Remove baffle plate ⇒ page 165 .
– Remove glove compartment ⇒ General body repairs, interior;
Rep. gr. 68 ; Compartments/covers; Removing and installing
glove compartment .
– Remove footwell vent on front passenger side ⇒ page 172 .
lk
– Remove centre console trim in footwell ⇒ General body re‐
pairs, interior; Rep. gr. 68 ; Centre console; Assembly over‐
view - centre console .
Vehicles with auxiliary air heater
– Remove auxiliary air heater element - Z35- with auxiliary air
heater control unit - J604- ⇒ page 137 .
Continued for all vehicles
– Cover the area beneath the connections for the coolant hoses
in the plenum chamber with impermeable sheeting and ab‐
sorbent paper, for example.
145
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– Lift locking element -6-, remove clip -5- and pull coolant line
-4- off heat exchanger.
Note
The illustration shows a left-hand drive vehicle.
– Unscrew bolt -3-.
– Remove screw-type clip -2- and pull coolant line -1- off heat
exchanger.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
– Remove bolts -1-, -3- and -5-.
Note
The illustration shows a left-hand drive vehicle.
– Release retainer tabs -4- -arrows- and detach cover -2-.
– If noise insulation cannot be pulled out, cut open tabs on cover
-arrows-.
– Remove heat exchanger to left.
Installing
Install in reverse order of removal. Observe the following:
– Check heater slot for dirt with heat exchanger removed.
– If necessary, remove dirt or residue of leaked coolant.
Vehicles with TDI engine
– With auxiliary air heater element removed, check the heating
element slot for dirt and clean if necessary.
Continued for all vehicles
146
Rep. gr.87 - Air conditioning system
Tiguan 2016 ➤ , Tiguan RUS 2017 ➤
Heating, air conditioner - Edition 06.2017
– Check connection -3- of heat exchanger and connection -2- of
coolant pipes for damage or contamination.
– Clean and smooth sealing surface for seals.
– Moisten new seals -4- with coolant (or lubricate lightly with sil‐
icone grease) and fit them to coolant pipe -1-.
– Carefully slide heat exchanger into heater and air conditioning
unit as far as stop.
Note
When sliding in the heat exchanger, make sure not to damage
the connections and coolant pipes.
lk
– Push coolant pipes into heat exchanger as far as stop.
NOTICE
Risk of heat exchanger malfunction due to defective seals and
leaks.
– Never pinch seals.
– Never cant coolant pipes.
– Slide on coolant pipes completely.
– Fit new clip -5- or screw-type clip -2- onto joint of coolant pipe
and heat exchanger.
– Tighten bolt -3-.
– Check clip and screw-type clip for proper seating on connec‐
tions of heat exchanger and check coolant pipes. The coolant
pipes must not contact air distribution housing or any other
components.
– Fill up with coolant ⇒ Rep. gr. 19 ; Cooling system/coolant;
Draining and filling coolant .
– Read event memory and clear any entries displayed using
⇒ Vehicle diagnostic tester in “Guided Fault Finding” mode.
– Check operation of heater and air conditioning system.
Specified torques
♦ ⇒ “5.1 Assembly overview - heater and air conditioning unit”,
page 111
♦ Turbocharger; Assembly overview - turbocharger ⇒ Rep. gr.
21 ; Turbocharger; Assembly overview - turbocharger .
♦ Centre console; Assembly overview – centre console ⇒ Gen‐
eral body repairs, interior; Rep. gr. 68 ; Centre console;
Assembly overview – centre console
♦ Compartments/covers; Assembly overview - glove compart‐
ment ⇒ General body repairs, interior; Rep. gr. 68 ; Com‐
partments/covers; Assembly overview - glove compartment .
♦ Assembly overview - charge air system ⇒ Rep. gr. 21 ; Charge
air system; Assembly overview - charge air system
5.15.3
Removing and installing Denso heat ex‐
changer, left-hand drive vehicles
Special tools and workshop equipment required
147
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Heating, air conditioner - Edition 06.2017
♦ Drip tray for workshop hoist - VAS 6208-
lk
♦ Hose clamps to 25 mm - 3094-
♦ Commercially available compressed air pistol
♦ Engine bung set - VAS 6122-
Removing
– If necessary, remove engine cover panel ⇒ Rep. gr. 10 ; En‐
gine cover panel; Removing and installing engine cover panel .
Vehicles with TDI engine
– Remove charge air cooler connecting pipe ⇒ Rep. gr. 21 ;
Charge air system; Assembly overview - charge air system .
Continued for all vehicles
– Place drip tray for workshop hoist - VAS 6208- beneath en‐
gine.
148
Rep. gr.87 - Air conditioning system
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Heating, air conditioner - Edition 06.2017
– Mark coolant hoses -2- and -3- so that they can be reconnec‐
ted to proper sides again later. The heat exchanger is de‐
signed for a certain direction of coolant flow only.
– Clamp off coolant hoses with hose clamps up to 25 mm - 3094-
-1- and -4-.
CAUTION
On a warm engine, the cooling system is under high pressure.
Danger of scalding by steam and hot coolant.
Skin and other parts of the body may be scalded.
– Wear protective gloves.
– Wear protective goggles.
– Reduce excess pressure by covering cap of coolant expan‐
sion tank with cloths and opening it carefully.
– Lift up retaining clips.
– Remove coolant hoses.
– Push a piece of hose onto upper union.
– Insert compressed air gun into end lokf hose.
– Place a container under the lower union and carefully blow
coolant out of the heat exchanger with a compressed air pistol.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
– Remove driver side knee airbag ⇒ General body repairs, in‐
terior; Rep. gr. 69 ; Knee airbags; Assembly overview - knee
airbag .
– Remove centre console trim in left footwell ⇒ General body
repairs, interior; Rep. gr. 68 ; Centre console; Assembly over‐
view - centre console .
Vehicles with auxiliary air heater
– Remove auxiliary air heater element - Z35- with auxiliary air
heater control unit - J604- ⇒ page 137 .
Continued for all vehicles
– Cover area beneath connections for coolant hoses in plenum
chamber as well as airbag control unit - J234- with, for exam‐
ple, impermeable sheeting and absorbent paper.
149
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– Remove bolts -2- and detach screw-type clamps -3-.
– Separate coolant pipes.
Note
♦ If the coolant pipes cannot be separated because the seals
are gummed up, cut through them at the marked locations
-arrows- using pliers - T40147- .
♦ Pull the cut coolant pipes -4- and -7- of heat exchanger off
coolant pipes -1- and -11- leading to the engine.
– Remove bolt -10- and detach heat exchanger bracket -9-.
– Pull out heat exchanger -6- to left.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
Installing
Install in reverse order of removal. Observe the following:
– Check heater slot for dirt with heat exchanger removed.
– If necessary, remove dirt or residue of leaked coolant.
Vehicles with TDI engine
– With auxiliary air heater element removed, check the heating
element slot for dirt and clean if necessary.
Continued for all vehicles
– Check foam seals -2- attached to heat exchanger -1- for dam‐
age and replace if necessary.
Note
♦ If the foam seal is not properly bonded in, it may roll up when
the heat exchanger is fitted.
♦ If the foam seal is damaged or improperly fitted, cold air can
flow past the heat exchanger.
150
Rep. gr.87 - Air conditioning system
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Heating, air conditioner - Edition 06.2017
– Check connection -3- of heat exchanger and connection of
coolant pipes -1- for damage or dirt.
– Clean and smooth sealing surface for seals.
– Moisten new seals -1- with coolant (or lubricate lightly with sil‐
icone grease) and fit them to coolant pipe.
– Carefully slide heat exchanger into heater and air conditioning
unit as far as stop.
Note
When sliding in the heat exchanger, make sure not to damage
the connections and coolant pipes.
– Push coolant pipes into heat exchanger as far as stop.
NOTICE
Risk of heat exchanger malfunction due to defective seals and
leaks.
– Never pinch seals.
lk
– Never cant coolant pipes.
– Slide on coolant pipes completely.
– Fit heat exchanger bracket -3- on air distribution housing and
tighten bolt -4-.
– Fit new clip -2- to joint between coolant pipe and heat ex‐
changer.
– Tighten bolt -1-.
– Check clip and screw-type clip for proper seating on connec‐
tions of heat exchanger and check coolant pipes. The coolant
pipes must not contact air distribution housing or any other
components.
– Fill up with coolant ⇒ Rep. gr. 19 ; Cooling system/coolant;
Draining and filling coolant .
– Read event memory and clear any entries displayed using
⇒ Vehicle diagnostic tester in “Guided Fault Finding” mode.
– Check operation of heater and air conditioning system.
Specified torques
♦ ⇒ “5.1 Assembly overview - heater and air conditioning unit”,
page 111
♦ Turbocharger; Assembly overview - turbocharger ⇒ Rep. gr.
21 ; Turbocharger; Assembly overview - turbocharger .
♦ Centre console; Assembly overview – centre console ⇒ Gen‐
eral body repairs, interior; Rep. gr. 68 ; Centre console;
Assembly overview – centre console
♦ Knee airbags; Assembly overview - knee airbag ⇒ General
body repairs, interior; Rep. gr. 69 ; Knee airbags; Assembly
overview - knee airbag .
♦ Assembly overview - charge air system ⇒ Rep. gr. 21 ; Charge
air system; Assembly overview - charge air system
151
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5.15.4
Removing and installing Denso heat ex‐
changer, right-hand drive vehicles
Special tools and workshop equipment required
♦ Drip tray for workshop hoist - VAS 6208-
♦ Hose clamps to 25 mm - 3094-
♦ Commercially available compressed air pistol
♦ Engine bung set - VAS 6122-
Removing
Removing
– If necessary, remove engine cover panel ⇒ Rep. gr. 10 ; En‐
gine cover panel; Removing and installing engine cover panel .
Vehicles with TDI engine
– Remove charge air cooler connecting pipe ⇒ Rep. gr. 21 ;
Charge air system; Assembly overview - charge air system .
Continued for all vehicles
– Place drip tray for workshop hoist - VAS 6208- beneath en‐
gine.
152
Rep. gr.87 - Air conditioning system
Tiguan 2016 ➤ , Tiguan RUS 2017 ➤
Heating, air conditioner - Edition 06.2017
– Mark coolant hoses -2- and -3- so that they can be reconnec‐
ted to proper sides again later. The heat exchanger is de‐
signed for a certain direction of coolant flow only.
– Clamp off coolant hoses with hose clamps up to 25 mm - 3094-
-1- and -4-.
CAUTION
On a warm engine, the cooling system is under high pressure.
Danger of scalding by steam and hot coolant.
Skin and other parts of the body may be scalded.
– Wear protective gloves.
– Wear protective goggles.
– Reduce excess pressure by covering cap of coolant expan‐
sion tank with cloths and opening it carefully.
– Lift up retaining clips.
– Remove coolant hoses.
– Push a piece of hose onto upper union.
– Insert compressed air gun into end of hose.
– Place a container under the lower union and carefully blow
coolant out of the heat exchanger with a compressed air pistol.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
– Remove baffle plate ⇒ page 165 .
– Remove glove compartment ⇒ General body repairs, interior;
Rep. gr. 68 ; Compartments/covers; Removing and installing
glove compartment .
– Remove footwell vent on front passenger side ⇒ page 172 .
– Remove centre console trim in footwelllk⇒ General body re‐
pairs, interior; Rep. gr. 68 ; Centre console; Assembly over‐
view - centre console .
Vehicles with auxiliary air heater
– Remove auxiliary air heater element - Z35- with auxiliary air
heater control unit - J604- ⇒ page 137 .
Continued for all vehicles
– Cover area beneath connections for coolant hoses in plenum
chamber as well as airbag control unit - J234- with, for exam‐
ple, impermeable sheeting and absorbent paper.
153
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– Remove bolts -2- and detach screw-type clamps -3-.
– Separate coolant pipes.
Note
♦ If the coolant pipes cannot be separated because the seals
are gummed up, cut through them at the marked locations
-arrows- using pliers - T40147- .
♦ Pull the cut coolant pipes -4- and -7- of heat exchanger off
coolant pipes -1- and -11- leading to the engine.
– Remove bolt -10- and detach heat exchanger bracklekt -9-.
– Pull out heat exchanger -6- to left.
– Seal open lines and connections with clean plugs from engine
bung set - VAS 6122- .
Installing
Install in reverse order of removal. Observe the following:
– Check heater slot for dirt with heat exchanger removed.
– If necessary, remove dirt or residue of leaked coolant.
Vehicles with TDI engine
– With auxiliary air heater element removed, check the heating
element slot for dirt and clean if necessary.
Continued for all vehicles
– Check foam seals -2- attached to heat exchanger -1- for dam‐
age and replace if necessary.
Note
♦ If the foam seal is not properly bonded in, it may roll up when
the heat exchanger is fitted.
♦ If the foam seal is damaged or improperly fitted, cold air can
flow past the heat exchanger.
154
Rep. gr.87 - Air conditioning system
Tiguan 2016 ➤ , Tiguan RUS 2017 ➤
Heating, air conditioner - Edition 06.2017
– Check connection -3- of heat exchanger and connection of
coolant pipes -1- for damage or dirt.
– Clean and smooth sealing surface for seals.
– Moisten new seals -1- with coolant (or lubricate lightly with sil‐
icone grease) and fit them to coolant pipe.
– Carefully slide heat exchanger into heater and air conditioning
unit as far as stop.
Note
When sliding in the heat exchanger, make sure not to damage
the connections and coolant pipes.
– Push coolant pipes into heat exchanger as far as stop.
NOTICE
Risk of heat exchanger malfunction due to defective seals and
leaks.
– Never pinch seals.
– Never cant coolant pipes.
– Slide on coolant pipes completely.
– Fit heat exchanger bracket -3- on air distribution housing and
tighten bolt -4-.
– Fit new clip -2- to joint between coolant pipe and heat ex‐
changer.
– Tighten bolts -1-.
– Check clip and screw-type clip for proper seating on connec‐
tions of heat exchanger and check coolant pipes. The coolant
pipes must not contact air distribution housing or any other
components.
– Fill up with coolant ⇒ Rep. gr. 19 ; Cooling system/coolant;
Draining and filling coolant .
– Read event memory and clear any entries displayed using
⇒ Vehicle diagnostic tester in “Guided Fault Finding” mode.
– Check operation of heater and air conditioning system.
Specified torques
♦ ⇒ “5.1 Assembly overview - heater and air conditioning unit”,
page 111
♦ Turbocharger; Assembly overview - turbocharger ⇒ Rep. gr.
21 ; Turbocharger; Assembly overview - turbocharger .
♦ Centre console; Assembly overview – centre console ⇒ Gen‐
eral body repairs, interior; Rep. gr. 68 ; Centre console;
Assembly overview – centre console
♦ Compartments/covers; Assembly overview - glove compart‐
ment ⇒ General body repairs, interior; Rep. gr. 68 ; Com‐
partments/covers; Assembly overview - glove compartment .
♦ Assembly overview - charge air system ⇒ Rep. gr. 21 ; Charge
air system; Assembly overview - charge air system
155
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Heating, air conditioner - Edition 06.2017
lk
5.16
Removing and installing coolant pipes
on heat exchanger
⇒ “5.16.2 Removing and installing coolant pipes at heat exchang‐
er (Denso)”, page 157
5.16.1
Removing and installing coolant pipes at
heat exchanger (Valeo)
Note
There are different designs and makes of heater and air condi‐
tioning unit. The individual components of the various heaters and
air conditioning units are similar but not identical (distinguishing
features ⇒ page 4 ). The combined fitting of different makes of
component is therefore not permissible ⇒ Electronic parts cata‐
logue (ETKA) .
Removing
– Remove heater and air conditioning unit ⇒ page 122 .
– Detach the sealing collar -3- to the plenum chamber bulkhead.
– Unscrew bolt -2-.
– Detach the coolant pipe holder -4- to the left.
– Detach the foam -1-.
– Lift locking element -7- and pull off clip -6-.
– Pull coolant pipe -5- off heat exchanger.
– Unscrew bolt -8-.
– Remove screw-type clip -9- and pull coolant pipe -10- off heat
exchanger.
– Detach the coolant pipes.
Installing
Install in reverse order of removal. Observe the following:
– Check connection -3- of heat exchanger and connection -2- of
coolant pipes for damage or contamination.
– Clean and smooth sealing surface for seals.
– Moisten new seals -4- with coolant (or lubricate lightly with sil‐
icone grease) and fit them to coolant pipe -1-.
– Push coolant pipes into heat exchanger as far as stop.
NOTICE
Risk of heat exchanger malfunction due to defective seals and
leaks.
– Never pinch seals.
– Never cant coolant pipes.
– Slide on coolant pipes completely.
156
Rep. gr.87 - Air conditioning system
2024 VW Tiguan Owner's Manual
