2.0l - Cooling System - Engine Code(s): Caeb (sedan) Audi A4 B8

COOLANT, DRAINING AND FILLING

Special tools and workshop equipment required

1. Adapter V.A.G 1274/8 Adapter for V.A.G 1274 Tester V.A.G 1274/10
2. Hose Clip Pliers V.A.G 1921
3. Cooling System Charge Unit VAS 6096
4. Drip Tray VAS 6208
5. Refractometer T10007

DRAINING

Note. Collect escaping coolant in a clean container for disposal or reuse.

Open the coolant reservoir cap.

Remove the front noise insulation. Refer to Description and Operation .

Place the VAS 6208 under the engine.

Remove the drain plug -1- and drain the coolant.

Scheme 1

Note. Ignore -2-.

FILLING

Note. The cooling system is filled year year-round with a mixture of water and coolant additive. Mixture ratio Coolant Mixture Ratio . Other coolant additives may above all reduce the corrosion protection effect significantly. The damage resulting from this may lead to loss of coolant and consequently to severe engine damage. Coolant with the correct mixture ratio Coolant Mixture Ratio prevents freezing and corrosion damage and calcium deposits. They also raise the boiling point. For this reason the system must be filled all year round with frost and corrosion protection additives. Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates. Protection against frost must be assured down to approximately -25 °C (-13 °F) (in arctic climatic countries down to approximately -35 °C (-31 °F)). The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. Coolant additive portion must be at least 40%. If more freeze protection is needed due to the climate, increase the amount of coolant additive, but only up to 60% (freeze protection down to -40 °C (-40 °F)). Otherwise the freeze protection and cooling effectiveness will be reduced. Only use clean drinking water for mixing coolant. If radiator, heat exchanger, cylinder head or head seal or cylinder block were replaced, do not reuse used coolant. Dirty coolant may not be used again. Use the T10007 to determine the level of freeze protection in the coolant system.

COOLANT MIXTURE RATIO

1. Coolant (40%) and water (60%) for freeze protection down to -25 °C (-13 °F)

1. Coolant (50%) and water (50%) for freeze protection down to -40 °C (-40 °F)

1. Coolant

Close the drain plug -1-.

Fill coolant reservoir on the VAS 6096 with 10 liters of premixed coolant with the proper mixture ratio, for the mixture ratio Coolant Mixture Ratio .

Scheme 2

Attach V.A.G 1274/8 to coolant reservoir.

Install the VAS 6096 on the V.A.G 1274/8.

Place air outlet -1- in a small container -2-.

Note. A small amount of coolant which should be collected is drawn off with the discharged air.

Close valves -A and B- by turning lever at a right angle to direction of flow.

Connect hose -3- to compressed air.

1. Pressure: 6 to 10 bar pressure.

Open valve -B- by turning level in direction of flow.

Scheme 3

1. The suction jet pump generates pressure in the coolant system; indicator on display instrument must move into green area.

Briefly open valve -A- by turning lever in direction of flow so that the hose on VAS 6096 coolant reservoir fills with coolant.

Close valve -A- again.

Leave valve -B- open another 2 minutes.

1. More pressure is generated in the coolant system by the suction jet pump; indicator on display instrument must stay in the green area.

Close valve -B-.

1. Needle in the display instrument must remain in the green region, then the sufficient vacuum in the cooling system is obtained for the upcoming filling.

Note. If needle stands below the green area, repeat procedure. If pressure falls, check coolant system for leaks.

Remove pressurized air hose.

Open valve -A-.

1. Coolant is extracted from the VAS 6096 coolant reservoir by pressure in the coolant system and the system is filled.

Remove the VAS 6096 from the V.A.G 1274/8 on coolant reservoir.

Connect the V.A.G 1274/10 to the V.A.G 1274/8.

Scheme 4

Unclip the plenum chamber cover -2- and remove it.

Scheme 5

Note. Ignore items -1 and 3- and the -arrow-.

Loosen the coolant hose to the heat exchanger and pull it back until the connection no longer covers the bleeder hole -arrow- in the coolant hose.

Scheme 6

Fill the coolant until it escapes from the coolant hose bleeder hole.

Slide the coolant hose onto the connection and secure with a spring clamp.

If the vehicle has an auxiliary heater, switch it on for about 30 seconds.

Close coolant reservoir cap.

Start the engine.

Adjust the temperature for all zones to "HI".

Press the ECON button to turn off the A/C compressor.

Run the engine at 2000 RPM for 3 minutes.

Run the engine at idle until both large coolant hoses on the radiator are warm.

Run the engine at 2000 RPM for 2 minutes.

Turn off engine and allow it to cool off.

Install the front noise insulation. Refer to Description and Operation .

Check the coolant level.

Scheme 7

1. Coolant level must be at "MAX" marking with engine is cold.
2. Coolant level may be above "MAX" marking with engine at operating temperature.

COOLANT HOSE CONNECTION DIAGRAM

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. The hose clip pliers V.A.G 1921 or hose clip pliers VAS 6340 are recommended for installing spring clamps. Always replace gaskets and seals. Arrows on coolant pipes and coolant hoses must line up across from each other.

Vehicles without auxiliary heater

Note. Blue = Large coolant circuit. Red = Small coolant circuit. Brown = Heating circuit.

Scheme 8

1. Radiator Change coolant after replacing
2. Turbocharger
3. Cylinder Head/Cylinder Block Change coolant after replacing
4. Coolant Switch-Off Valve Controlled by a vacuum from the Climatronic refrigerant shut-off valve -N422- Removing and installing, refer to «Description and Operation»(/audi/a4/b8-2007-2012/remont/automatic-hvac-system/#air-conditioning-sedan)
5. Bleeder Hole
6. Heat Exchanger for Heater Unit Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/automatic-hvac-system/#air-conditioning-sedan) Change coolant after replacing
7. Coolant Pump -V50- Installed only on vehicles with a start/stop system
8. Coolant Pump Removing and installing, refer to «COOLANT PUMP»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__coolant-pump)
9. Restrictor
10. Coolant Reservoir Cap Pressure relief valve, checking (Scheme 15)
11. Coolant Reservoir
12. Non-Return Valve
13. After-Run Coolant Pump -V51- Installed only on hot climate vehicles
14. Coolant Thermostat
15. Engine Coolant Temperature Sensor -G62- Removing and installing, refer to «Engine Coolant Temperature (ECT) Sensor -G62»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__engine-coolant-temperature-ect-sensor-g62)
16. Engine Oil Cooler

Scheme 9

1. Coolant Hose
2. Bolt 6 Nm
3. Small Coolant Pipe Removing and installing, refer to «SMALL COOLANT PIPE»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__small-coolant-pipe)
4. Bolt 9 Nm
5. O-ring Replace
6. Bolt 9 Nm
7. O-ring Replace
8. Coolant Hose Lift the retaining clamp to remove Connect to the radiator (Scheme 13)
9. Front Coolant Pipe Removing and installing, refer to «FRONT COOLANT PIPE»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__front-coolant-pipe)
10. Coolant Hose
11. Bolt 6 Nm
12. Coolant Hose
13. After-Run Coolant Pump -V51- Removing and installing, refer to «After-Run Coolant Pump -V51»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__after-run-coolant-pump-v51)
14. Bolt 4 Nm
15. Bracket
16. Bolt 9 Nm
17. Bracket

Scheme 10

1. Bolt Tightening sequence (Scheme 11)
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 (ECT) Sensor -G62»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__engine-coolant-temperature-ect-sensor-g62)
8. O-ring Replace
9. Coolant Pump Removing and installing, refer to «COOLANT PUMP»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__coolant-pump) With a new coolant pump, remove the protective cap
10. Gasket Replace
11. Centering Pin 2 pieces
12. Toothed Belt For coolant pump Removing and installing, refer to «COOLANT PUMP TOOTHED BELT»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__coolant-pump-toothed-belt)
13. Toothed Belt Guard
14. Bolt 9 Nm
15. Bolt 10 Nm + 90° turn Replace Left thread
16. Drive Gear for Toothed Belt Pay attention to the installed position
17. Shaft Seal Removing and installing, refer to «COOLANT PUMP DRIVE SEAL, REPLACING»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__coolant-pump-drive-seal-replacing)
18. Balance Shaft
19. Coolant Thermostat Removing and installing, refer to «THERMOSTAT»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__thermostat)
20. Centering Pin
21. O-ring Replace
22. Connecting Piece
23. Bolt 9 Nm

Scheme 11

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

RADIATOR AND RADIATOR FAN OVERVIEW

Note. Secure all hose connections using hose clamps appropriate for the model. The hose clip pliers V.A.G 1921 or hose clip pliers VAS 6340 are recommended for installing spring clamps. Always replace gaskets and seals. The arrows on the coolant pipes and ends of coolant hoses must align.

Scheme 12

1. Bolt 2.5 Nm
2. Coolant Fan Control Module -J293- Removing and installing, refer to «RADIATOR FAN CONTROL MODULE»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__radiator-fan-control-module)
3. Bolt 5 Nm
4. Fan Rib Removing and installing, refer to «RADIATOR AND FAN SHROUD»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__radiator-and-fan-shroud)
5. Coolant Fan -V7- Removing and installing, refer to «Coolant Fan -V7- AND Coolant Fan 2 -V177»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__coolant-fan-v7-and-coolant-fan)
6. Bolt 3.5 Nm
7. Rubber Buffer
8. Rubber Bushing For radiator
9. Coolant Hose Lift the retaining clamp to remove
10. O-ring Replace
11. Coolant Hose Lift the retaining clamp to remove
12. O-ring Replace
13. Coolant Hose To the coolant reservoir
14. O-ring Replace
15. Radiator Removing and installing with the fan shroud «RADIATOR AND FAN SHROUD»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__radiator-and-fan-shroud) After replacing replace entire amount of coolant
16. Retaining Pin Disengage and remove using screwdriver
17. Rubber Buffer
18. Radiator Bracket
19. Bolt 5.5 Nm
20. Coolant Fan 2 -V177- Not with the 400 W fan activation Removing and installing, refer to «Coolant Fan -V7- AND Coolant Fan 2 -V177»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__coolant-fan-v7-and-coolant-fan)
21. Bolt 5 Nm

Scheme 13

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

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

Press the coolant hose on to the coolant pipe -1- until you hear it engage.

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

FASTENER TIGHTENING SPECIFICATIONS

Coolant Pump Tightening Sequence

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

COOLING SYSTEM, CHECKING FOR LEAKS

Special tools and workshop equipment required

1. Cooling System Tester V.A.G 1274 B
2. Adapter V.A.G 1274/8
3. Adapter V.A.G 1274/9

Procedure

1. Engine at operating temperature.

Open the coolant reservoir cap.

Position the V.A.G 1274 B with the V.A.G 1274/8 on coolant reservoir.

Scheme 14

Generate a positive pressure of approximately 1.0 bar using hand pump of cooling system tester.

If pressure decreases, search for leaking areas and repair the malfunction.

Scheme 15

Attach the V.A.G 1274 B with the V.A.G 1274/9 to sealing cap.

Generate pressure with cooling system tester hand pump.

1. The pressure release valve must open at 1.4 to 1.6 bar.

AFTER-RUN COOLANT PUMP -V51

Special tools and workshop equipment required

1. Hose Clamps Up to 25 mm Dia. 3094
2. Hose Clip Pliers V.A.G 1921

Removing

Loosen the hose clamps -arrows- and remove the air guide hose.

Scheme 16

Note. Ignore -1-.

Note. Lay a cloth below the coolant pipe to catch escaping coolant.

Disconnect and remove the coolant hoses -arrows- with the 3094.

Scheme 17

Disconnect the connector -2-.

Remove the bolt -1- and the after-run coolant pump --.

Installing

Install in reverse order of removal. Note the following

Note. The hose connections as well as the air guide pipes and hoses must be free of oil and grease before installing. Secure all hose connections with hose clamps appropriate for the model. In order to be able to mount the air guide hoses on their connectors, spray the screws on the previously used clamps with a rust remover.

Check the coolant level (Scheme 7).

FRONT COOLANT PIPE

Special tools and workshop equipment required

1. Hose Clamps Up to 25 mm Dia. 3094
2. Hose Clip Pliers V.A.G 1921

Removing

Note. Lay a cloth below the coolant pipe to catch escaping coolant.

Remove the bolts -1 and 2- and move the front coolant pipe upward.

Scheme 18

Disconnect and remove the coolant hoses -arrows- with the 3094.

Installing

1. Tightening specifications, refer to «COOLANT PIPES AND AFTER-RUN COOLANT PUMP OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan) .

Install in reverse order of removal. Note the following

Note. Secure all hose connections with hose clamps appropriate for the model.

Check the coolant level (Scheme 7).

SMALL COOLANT PIPE

Special tools and workshop equipment required

1. Hose Clip Pliers VAS 6340

Removing

Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

Loosen the hose clamps -arrows- and remove the air guide hose.

Remove the bolts -arrows- and remove the electrical connectors -1 through 3- from the bracket.

Scheme 19

Loosen hose clamp -1- and lift clamp -2- to remove the coolant hoses.

Scheme 20

Remove the bolts -arrows- and remove the small coolant pipe.

Installing

Install in reverse order of removal. Note the following

Tightening specifications, refer to COOLANT PIPES AND AFTER-RUN COOLANT PUMP OVERVIEW .

Note. Replace O-rings. The hose connections as well as the air guide pipes and hoses must be free of oil and grease before installing. Secure all hose connections with hose clamps appropriate for the model. In order to be able to mount the air guide hoses on their connectors, spray the screws on the previously used clamps with a rust remover.

Connect the coolant hose to the coupling. (Scheme 13)

Fill with coolant Filling .

Engine Coolant Temperature (ECT) Sensor -G62

Removing

1. Engine cold.

Briefly open the coolant reservoir cap to reduce the residual pressure in the coolant system.

Loosen the hose clamps -arrows- and remove the air guide hose.

Note. Ignore -1-.

Disconnect electrical connector -1- on throttle valve control module -J338-.

Scheme 21

Remove bolts -arrows- and remove throttle valve control module --.

Remove the intake manifold support; to do this, remove the nut -2- and bolt -1-.

Scheme 22

Note. Different ECT Sensor may be installed, depending on the version.

Inserted Version

Disconnect the electrical connector -1- on the ECT sensor.

Scheme 23

Note. Lay a cloth below to catch escaping coolant.

Remove the clamp, to do this, press the latches -arrow-.

Remove the ECT sensor -2-.

Threaded Version

Disconnect the electrical connector -2- on the ECT sensor.

Scheme 24

Note. Lay a cloth below to catch escaping coolant.

Remove the bolts -arrows- and the retaining plate -1-.

Remove the ECT sensor.

Installing

Install in reverse order of removal. Note the following

1. Tightening specifications, refer to «COOLANT PUMP AND THERMOSTAT OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan) .

Note. Replace O-rings. To prevent coolant loss, immediately insert new ECT sensor in connecting pieces. The hose connections as well as the air guide pipes and hoses must be free of oil and grease before installing. Secure all hose connections with hose clamps appropriate for the model. In order to be able to securely mount the air guide hoses on their connectors, spray the screws on the previously used clamps with a rust remover.

Install the intake manifold support. Refer to Removal and Installation .

Install throttle valve control module. Refer to Removal and Installation .

Check the coolant level Filling .

COOLANT PUMP TOOTHED BELT

Special tools and workshop equipment required

1. Insert Tool 12 mm T10360
2. Torque Wrench 5-50 Nm V.A.G 1331

Removing

Remove small coolant pipe. Refer to SMALL COOLANT PIPE .

Remove the coolant hoses -1 and 2- and lay them aside.

Scheme 25

Remove the bolts -arrows- and remove the toothed belt guard.

Scheme 26

Remove the bolt on the coolant pump drive gear -1- using a V.A.G 1331 and T10360 while counter holding the vibration damper.

Scheme 27

Remove the drive gear -1- and toothed belt -2-.

Installing

1. Tightening specifications, refer to «COOLANT PUMP AND THERMOSTAT OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan) .

Install in reverse order of removal. Note the following

Note. Replace the drive gear bolt. Replace seals and O-rings. Note the toothed belt sprocket installation location, see item 16 in (Scheme 10).

Install the small coolant pipe. Refer to SMALL COOLANT PIPE .

Fill with coolant Filling .

COOLANT PUMP DRIVE SEAL, REPLACING

Special tools and workshop equipment required

1. Thrust Piece T10353

Procedure

Remove small coolant pipe. Refer to SMALL COOLANT PIPE .

Remove the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

Firmly press a screwdriver -1- on the seal surface -2- -arrow B-.

Scheme 28

Pry out the seal -arrow A-.

Clean running and sealing surface.

Coat the sealing surface of the balance shaft -2- with transmission oil.

Scheme 29

Push the seal -1- onto the balance shaft.

1. "Luftseite" or ("Outside") -arrow- must be readable from the outside.

Mount the T10353 on the shaft seal -1- and then tighten it all the way into the cylinder block with the bolt -2-. Be careful not to tilt the shaft seal when doing this.

Scheme 30

Install the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

Install the small coolant pipe. Refer to SMALL COOLANT PIPE .

Fill with coolant Filling .

COOLANT PUMP

Removing

Remove small coolant pipe. Refer to SMALL COOLANT PIPE .

Remove the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

Disconnect electrical connector -1- on throttle valve control module -J338-.

Remove bolts -arrows- and remove throttle valve control module.

Disconnect the electrical connector -1- on the Engine Coolant Temperature (ECT) sensor -G62-.

Note. Ignore items -2 and arrows-.

Lift the clamps -1 and 2-, remove the coolant hoses and move them to the side.

Scheme 31

Remove the bolts -1 through 5-.

Remove the coolant pump from the centering pin and remove the engine oil cooler.

Note. Ignore -arrow-.

Installing

1. Tightening specifications, refer to «COOLANT PUMP AND THERMOSTAT OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan) .

Install in reverse order of removal. Note the following

Note. Replace seals and O-rings.

Coat the O-rings -4- with coolant

Scheme 32

Make sure both centering pins are installed in the cylinder block.

Install the connection piece -2- into the engine oil cooler -1-.

Push the coolant pump -3- onto the connection piece and onto the centering pins in the cylinder block.

Tighten the coolant pump bolts. (Scheme 11)

Note. If a new coolant pump was installed, then the protective cap -arrow- must be removed.

Install the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

Install throttle valve control module. Refer to Removal and Installation .

Install the small coolant pipe. Refer to SMALL COOLANT PIPE .

Fill with coolant Filling .

THERMOSTAT

Removing

Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

Remove the coolant pump. Refer to COOLANT PUMP .

Remove bolts -arrows- and remove connecting pieces.

Scheme 33

Remove the coolant thermostat.

Installing

Install in reverse order of removal. Note the following

1. Tightening specifications, refer to «COOLANT PUMP AND THERMOSTAT OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan) .

Note. Replace seals and O-rings.

Clean O-ring sealing surface.

Coat the O-ring with coolant; coolant

Install the thermostat -4- into the housing -5- for the coolant pump and move it slightly forward -arrow-.

Scheme 34

Carefully mount the connector -3- ; while doing this, insert the centering pin -2- into the guide -1-.

Install the intake manifold support. Refer to Removal and Installation .

Air guides, installing with connector. Refer to AIR DUCTS WITH CONNECTOR COUPLINGS

Fill with coolant Filling .

RADIATOR AND FAN SHROUD

Note. The cooler and fan shroud can only be removed and installed together.

Special tools and workshop equipment required

1. Used Oil Collecting and Extracting Device V.A.G 1782 for vehicles with a DSG transmission
2. Engine Bung Set VAS 6122 for vehicles with a DSG transmission
3. Drip Tray for VAS 6100 VAS 6208

Removing

Note. If there are small impressions on the fins. Refer to COOLERS, CONDENSERS AND CHARGE AIR COOLERS .

Remove the noise insulation. Refer to Description and Operation .

Remove the front bumper cover and the bumper. Refer to Removal and Installation .

Remove the charge air cooler. Refer to CHARGE AIR COOLER .

Audi A4 Vehicles

Remove right headlamp. Refer to Removal and Installation .

On vehicles with a headlamp washer system, remove the right headlamp washer spray nozzle. Refer to Removal and Installation .

Disconnect the connector -1- on the front passenger front airbag crash sensor -G284-. Refer to Removal and Installation .

Scheme 35

Remove the bolts -1 and 2-.

Scheme 36

Unclip the right headlamp mount -arrows- and remove it.

All Vehicles

Place the VAS 6208 under engine.

Remove the drain plug -1- and drain the coolant.

Remove the coolant hose -2- from the radiator by raising the retaining clip.

Remove the coolant fan electrical connector -1- from the bracket and disconnect it by sliding the retainer back -arrow- and pressing the release down.

Scheme 37

Remove the bolts -1, 2, 3 and 5-.

Scheme 38

Lift the lock carrier cover -4- and hang it on the radiator grille -arrow-.

Remove the bolts -arrows-.

Scheme 39

Remove the connections -1 and 2- from the radiator by removing the retaining clip.

Scheme 40

Remove the air duct -1- and intermediate flange -2-.

Vehicles with Multitronic Transmission

Place the V.A.G 1782 under the disconnection point.

Note. Follow the rules for clean working conditions when working on the multitrontic transmission. Refer to General Information .

Remove the bolts -arrow- and disconnect the ATF lines from the transmission.

Scheme 41

Note. To prevent ATF from leaking, secure all ATF lines to the top of the longitudinal member. Seal open lines and connections with clean plugs from the VAS 6122 to prevent dirt from entering.

All Vehicles

Release the retaining tabs -arrows A- and remove the left and right air ducts -1- upward -arrow B-.

Scheme 42

Release the left and right radiator retaining pins and remove by pulling upward -arrows-.

Scheme 43

Remove the left and right bolts -1- and remove the radiator bracket with the radiator from the lock carrier -arrow-.

Scheme 44

Lower the radiator slightly.

Have a second technician release the retaining clamps -1- in the direction of -arrow A- and remove the condenser -2- upward out of the mounts on the radiator -arrows B-.

Scheme 45

Tip the condenser with the lines connected forward.

Remove the radiator.

Press the fan shroud left and right locking tabs at the same time -arrow- and remove the fan shroud upward from the radiator.

Scheme 46

Installing

Install in reverse order of removal. Note the following

1. Tightening specifications, refer to «RADIATOR AND RADIATOR FAN OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__radiator-and-radiator-fan-overview) .

Install the air duct on the air filter housing intermediate flange. Refer to Removal and Installation .

On vehicles with multitronic transmission, tighten the ATF lines. Refer to Removal and Installation .

Install the charge air cooler. Refer to CHARGE AIR COOLER .

Install the bumper and front bumper cover. Refer to Removal and Installation .

Connect the coolant hose with the connector on the coolant pipe. (Scheme 13)

Fill with coolant. Refer to COOLANT, DRAINING AND FILLING .

Note. All of the coolant must be changed if the radiator was replaced.

On vehicles with multitronic transmission, check the ATF level. Refer to General Information .

RADIATOR FAN CONTROL MODULE

Removing

Note. During installation, all cable ties must be installed at the same location.

Remove the noise insulation. Refer to Description and Operation .

Remove the coolant fan electrical connector -1- from the bracket and disconnect it by sliding the retainer back -arrow- and pressing the release down.

Free up the electrical wiring harness to the radiator fan control module.

Disconnect electrical connectors -2- and -3-.

Scheme 47

Remove the bolt -arrow- and the coolant fan control module -1-.

Installing

Install in reverse order of removal. Note the following

1. Tightening specifications, refer to «RADIATOR AND RADIATOR FAN OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__radiator-and-radiator-fan-overview) .

Install the front noise insulation. Refer to Description and Operation .

COOLANT FAN -V7- AND COOLANT FAN 2 -V177

Removing

Note. During installation, all cable ties must be installed at the same location.

Remove fan shroud. Refer to RADIATOR AND FAN SHROUD .

Coolant Fan -V7

Disconnect the connector -1-.

Scheme 48

Remove the bolts -arrows- and the coolant fan.

Coolant Fan 2 -V177

Note. Coolant fan 2 not with the 400 W fan activation

Disconnect the connector -1-.

Scheme 49

Remove the bolts -arrows- and the coolant fan 2.

Installing

Install in reverse order of removal. Note the following

1. Tightening specifications, refer to «RADIATOR AND RADIATOR FAN OVERVIEW»(/audi/a4/b8-2007-2012/remont/cooling-fan/#20l-cooling-system-engine-codes-caeb-sedan__radiator-and-radiator-fan-overview) .

Install fan shroud. Refer to RADIATOR AND FAN SHROUD .

Scheme 50

Special tools and workshop equipment required

1. Adapter V.A.G 1274/8 Adapter for V.A.G 1274 Tester V.A.G 1274/10
2. Hose Clip Pliers V.A.G 1921
3. Cooling System Charge Unit VAS 6096
4. Drip Tray for VAS 6100 VAS 6208
5. Refractometer T10007

Special tools and workshop equipment required

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

1. Cooling System Tester V.A.G 1274 B
2. Adapter V.A.G 1274/9
3. Hose Clamps Up to 25 mm Dia. 3094
4. Hose Clip Pliers V.A.G 1921
5. Hose Clip Pliers VAS 6340
6. Insert Tool 12 mm T10360
7. Thrust Piece T10353
8. Used Oil Collecting and Extracting Device V.A.G 1782
9. Engine Bung Set VAS 6122

See also:
• Description and Operation
• Description and Operation
• Removal and Installation
• AIR DUCTS WITH CONNECTOR COUPLINGS
• COOLERS, CONDENSERS AND CHARGE AIR COOLERS
• Removal and Installation
• CHARGE AIR COOLER
• Removal and Installation
• Removal and Installation
• Removal and Installation
• General Information
• Removal and Installation
• Coolant Mixture Ratio
• COOLANT PUMP
• Engine Coolant Temperature (ECT) Sensor -G62
• SMALL COOLANT PIPE
• FRONT COOLANT PIPE
• After-Run Coolant Pump -V51
• COOLANT PUMP TOOTHED BELT
• COOLANT PUMP DRIVE SEAL, REPLACING
• THERMOSTAT
• RADIATOR FAN CONTROL MODULE
• RADIATOR AND FAN SHROUD
• Coolant Fan -V7- AND Coolant Fan 2 -V177
• COOLANT PIPES AND AFTER-RUN COOLANT PUMP OVERVIEW
• RADIATOR AND RADIATOR FAN OVERVIEW
• COOLANT, DRAINING AND FILLING
• Filling