Audi TT (2007 year). Manual - part 50

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

Connecting coolant hose with plug-in connector
– Remove old O-ring -2- from coolant hose -3-.
– Lightly lubricate new O-ring with coolant and fit O-ring in cool‐

ant hose.

– Press coolant hose onto connection -1- until it engages audi‐

bly.

– Press coolant hose in again and then pull to check that plug-

in connector is correctly engaged.

4.2

Removing and installing radiator

Special tools and workshop equipment required
♦ Drip tray for workshop hoist -VAS 6208-

Removing

Note

Even when the radiator and condenser are correctly installed,

slight impressions may be visible on the fins of these components.

This does not mean that the components are damaged. If the fins

are only very slightly distorted, this does not justify renewal of the

radiator or the condenser.

– Drain coolant 

⇒ page 163

 .

– Remove radiator cowl 

⇒ page 192

 .

– Lift retaining clip -arrow- and disconnect coolant hose (top left)

from radiator.

4. Radiator and radiator fans    

191

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

– Unplug electrical connector -A- at high-pressure sender -G65-

-item B-.

Note

Disregard -item C-.

– Place drip tray for workshop hoist -VAS 6208- beneath engine.
– Remove bolts -arrows- at rear and lift out radiator.
Installing
• Tightening torque 

⇒ page 190

 .

Installation is carried out in the reverse order; note the following:

Note

♦

Renew seals and O-rings.

♦

Secure all hose connections with the correct type of hose clips

(same as original equipment) ⇒  Electronic parts catalogue .

– Install radiator cowl 

⇒ page 192

 .

– Fill up with coolant 

⇒ page 166

 .

4.3

Removing and installing radiator cowl

Removing
– Remove engine cover panel -arrows-.

192

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

– Pull cover off air duct (release clips on sides) -arrows-.

– Release clips on left and right -arrow A- and unclip air duct at

bottom -2-.

– Swivel air duct (bottom) slightly to the rear and detach air duct

(bottom) from retainers -3-.

– Detach air pipe -1- from air duct (bottom) -arrow B-.

– Remove bolts -arrows- and detach air duct -1- from lock car‐

rier.

– Remove bolts -top arrows- for radiator cowl.

Note

The bolts -bottom arrows- are removed at a later stage.

4. Radiator and radiator fans    

193

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 
 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 
     with respect to the correctness of information in this document. Copyright by AUDI AG.

– Release fasteners -1 ... 4- and remove centre noise insulation.

– Unplug electrical connector -1-.
– Remove bolts -bottom arrows- and lift out air cowl.
Installing
• Tightening torque 

⇒ page 190

 .

4.4

Removing and installing radiator fans -

V7- / -V177-

Removing
– Remove radiator cowl 

⇒ page 192

 .

– Unplug electrical connector -1- and move clear.
– Unscrew nuts -arrows- and remove radiator fans.
Installing
• Tightening torque 

⇒ page 190

 .

Installation is carried out in the reverse order; note the following:

Note

Fit all cable ties in the original positions when installing.

– Install radiator cowl 

⇒ page 192

 .

4.5

Checking cooling system for leaks

Special tools and workshop equipment required

194