Audi TT (2007 year). Manual - part 46

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.

3

Coolant pipes, coolant temperature

senders, coolant circulation pump

3.1

Coolant pipes, coolant temperature senders, coolant circulation pump - ex‐

ploded view

1 - Grommet

❑ Not supplied separately

2 - Sleeve

❑ Not supplied separately

3 - Bolt

❑ 2.7 Nm

4 - Bolt

❑ 40 Nm

5 - Bracket

❑ For pump for exhaust

gas recirculation cooler

-V400-

6 - Coolant pipe (front)

❑ Removing and installing

⇒ page 180

7 - O-ring

❑ Renew

8 - Coolant pipe (right-side)

❑ Removing and installing

⇒ page 186

9 - O-ring

❑ Renew

10 - Radiator outlet coolant

temperature sender -G83-

❑ Removing and installing

⇒ page 178

11 - Retaining clip
12 - Bolt

❑ 9 Nm

13 - Nut

❑ 9 Nm

14 - Bolt

❑ 9 Nm

15 - Coolant pipe
16 - Bolt

❑ 9 Nm

17 - Gasket

❑ Renew

18 - Connection

3. Coolant pipes, coolant temperature senders, coolant circulation pump    

175

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.

19 - Bolt

❑ 9 Nm

20 - Retaining clip
21 - Coolant temperature sender -G62-

❑ Removing and installing 

⇒ page 176

22 - O-ring

❑ Renew

23 - Centre hex stud

❑ 9 Nm

24 - Bolt

❑ 9 Nm

25 - Coolant pipe (left-side)

❑ Removing and installing 

⇒ page 184

26 - Bolt

❑ 9 Nm

27 - Bolt

❑ 40 Nm

28 - Bolt

❑ 13 Nm

29 - Pump for exhaust gas recirculation cooler -V400-

❑ Removing and installing 

⇒ page 178

3.2

Removing and installing coolant temper‐

ature sender -G62-

Removing
• Engine cold.
– Open filler cap on coolant expansion tank briefly and allow re‐

sidual pressure in cooling system to dissipate.

176

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.

– Remove bolts -arrows-.
– Use removal lever -80 - 200- to move electrical wiring and ho‐

ses at air pipe (left-side) clear.

– Release hose clip -3- and push air pipe (left-side) with coolant

pipe towards the left.

Note

Disregard -items 1, 2, 4 and 5-.

– Unplug electrical connector -2- at coolant temperature sender

-G62- .

Note

Place a cloth underneath the connection to catch escaping cool‐

ant.

– Pull off retaining clip -1- and pull coolant temperature sender

-G62- out of connection.

Note

Disregard -arrows-.

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

Note

♦

Fit new O-rings.

♦

To avoid loss of coolant, insert new coolant temperature send‐

er -G62- immediately into connection.

– Install air pipe (left-side) 

⇒ page 208

 .

⇒ page 169

 .

3. Coolant pipes, coolant temperature senders, coolant circulation pump    

177

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.

3.3

Removing and installing radiator outlet

coolant temperature sender -G83-

Removing
• Engine cold.
– Open filler cap on coolant expansion tank briefly and allow re‐

sidual pressure in cooling system to dissipate.

– Remove engine cover panel -arrows-.

– Unplug electrical connector -2- at radiator outlet coolant tem‐

perature sender -G83- .

Note

Place a cloth underneath to catch escaping coolant.

– Pull off retaining clip -1- and pull radiator outlet coolant tem‐

perature sender -G83- out of connection on coolant pipe.

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

Note

♦

Fit new O-ring.

♦

To avoid loss of coolant, fit new radiator outlet coolant tem‐

perature sender -G83- into coolant pipe immediately.

– Check coolant level 

⇒ page 169

 .

3.4

Removing and installing pump for ex‐

haust gas recirculation cooler -V400-

Special tools and workshop equipment required
♦ Hose clamps for hoses up to 25 mm -3094-

178