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VW Tiguan Heating & Air Conditioner ➜ Removing and installing heat exchanger

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  
theMANUALS.org 5. Front heater and air conditioning unit  
 
Tiguan 2016 ➤ , Tiguan RUS 2017 ➤  
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  
theMANUALS.org  
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 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  
theMANUALS.org 5. Front heater and air conditioning unit