2.0L - Cooling System - Engine Code(s): Cbfa & Ccta: Overview Audi A3 8P facelift 2

COOLANT PIPES OVERVIEW

Note. When the engine is warm the cooling system is under pressure. If necessary release pressure before commencing repair work. Secure all hose connections using hose clamps appropriate for the model type, Hose clip pliers V.A.G 1921- or spring-type clip pliers VAS 5024 A- are recommended for installing spring-type clamps. Always replace gaskets and seals. Arrows on coolant pipes and coolant hoses must line up across from each other.

Scheme 1

1. Front Coolant Pipes Removing and installing, refer to «FRONT COOLANT PIPES»(ref-496038-S11106249702012082100000)
2. Coolant Hose From turbocharger
3. Coolant Hose To the coolant reservoir
4. Bolt 5 Nm
5. O-ring Replace
6. Coolant Hose To heat exchanger for heater unit
7. Small Coolant Pipe Removing and installing, refer to «SMALL COOLANT PIPE»(ref-496038-S41432790642012082100000)
8. Bolts 9 Nm
9. Coolant Hose
10. Bolt 5 Nm
11. Coolant Hose From after-run coolant pump -V51
12. Coolant Hose To the after-run coolant pump

COOLANT PUMP AND THERMOSTAT ASSEMBLY OVERVIEW

Note. When the engine is warm the cooling system is under pressure. If necessary release pressure before commencing repair work. Secure all hose connections using hose clamps appropriate for the model type, Hose clip pliers V.A.G 1921- or spring-type clip pliers VAS 5024 A- are recommended for installing spring-type clamps. Always replace gaskets and seals. Arrows on coolant pipes and coolant hoses must line up across from each other.

Scheme 2

1. Bolt Tightening order «COOLANT PUMP AND THERMOSTAT ASSEMBLY OVERVIEW»(ref-496038-S11745924672012082100000)
2. O-rings Replace
3. Connection
4. Retaining Clip Only with the inserted version Make sure it is secure
5. Bolt 4 Nm Only with the threaded version
6. Retaining Plate Only with the threaded version
7. Engine Coolant Temperature (ECT) Sensor -G62- Removing and installing, refer to «ENGINE COOLANT TEMPERATURE SENSOR»(ref-496038-S31976678522012082100000)
8. O-ring Replace
9. Coolant Pump Removing and installing, refer to «COOLANT PUMP»(ref-496038-S13999381232012082100000) With a new coolant pump, remove the protective cap
10. Seal Replace
11. Centering Pin Quantity: 2
12. Toothed Belt For coolant pump Removing and installing, refer to «COOLANT PUMP TOOTHED BELT»(ref-496038-S36975527262012082100000)
13. Toothed Belt Guard
14. Bolt 9 Nm
15. Bolt Replace 10 Nm plus an additional 90° turn Left thread
16. Toothed Belt Drive Gear Pay attention to the installed position.
17. Shaft Seal Replacing «COOLANT PUMP DRIVE SHAFT SEAL»(ref-496038-S13101841702012082100000) .
18. Balance Shaft
19. Coolant Thermostat Removing and installing, refer to «COOLANT THERMOSTAT»(ref-496038-S29546195502012082100000)
20. Centering Pin
21. O-ring Replace
22. Connecting Piece
23. Bolt 9 Nm

Scheme 3

Tighten the coolant pump bolts to 9 Nm in a -1 to 5- sequence.

RADIATOR AND COOLANT FAN OVERVIEW

Note. When the engine is warm the cooling system is under pressure. If necessary release pressure before commencing repair work. Secure all hose connections using hose clamps appropriate for the model. Hose clip pliers V.A.G 1921 or spring-type clip pliers VAS 5024 A are recommended for installing spring-type clamps. Always replace gaskets and seals. If there are small impressions on the fins. Refer to COOLERS, CONDENSERS AND CHARGE AIR COOLERS, INSTALLING . Arrows on coolant pipes and coolant hoses must line up across from each other.

Scheme 4

1. Coolant Fan -V7- Removing and installing, refer to «COOLANT FAN AND COOLANT FAN 2»(ref-496038-S26340535322012082100000)
2. Nut 10 Nm
3. Fan Shroud
4. Lower Coolant Hose To the connection for the coolant thermostat
5. Clamp
6. Engine Coolant Temperature (ECT) Sensor -G62- Removing and installing, refer to «ENGINE COOLANT TEMPERATURE SENSOR»(ref-496038-S31976678522012082100000)
7. O-ring Replace if damaged
8. Upper Coolant Hose From coolant pump
9. O-ring Replace if damaged
10. Bolt 5 Nm On the charge air cooler
11. Radiator Removing and installing, refer to «RADIATOR»(ref-496038-S27013875162012082100000) After replacing replace entire amount of coolant Engines with a radiator identification sensor -G611-, refer to «RADIATOR AND COOLANT FAN ASSEMBLY OVERVIEW»(ref-496038-S22644446852012082100000)
12. Nut 10 Nm
13. Bolt 5 Nm On the radiator
14. Coolant Fan 2 -V177- Removing and installing, refer to «COOLANT FAN AND COOLANT FAN 2»(ref-496038-S26340535322012082100000)

Scheme 5

Remove the old O-ring -2- in the coolant hose -3-.

Coat new O-ring with coolant and install it in the coolant hose.

Press the coolant hose onto the connection -1- until it engages audibly.

Press the coolant hose on again and pull to make sure the connection is engaged correctly.

Scheme 6

Arrow- indicates direction of travel

A- Radiator

B- Radiator Identification Sensor -G611

Note. The radiator identification sensor -G611- can be replaced only with the radiator.