Cooling system components, body side

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Fig 1: Exploded View Of Cooling System (Engine codes AEG, AVH, AZG, BBW, BEV)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Engine codes AEG, AVH, AZG, BBW, BEV

NOTE:

Coolant hose connection diagram, Engine code AEG. Refer to Engine code AEG
Coolant hose connection diagram, Engine codes AVH, AZG, BBW, BEV. Refer to Engine codes AVH, AZG, BBW, BEV

1 - Radiator

Removing and installing. Refer to Radiator, removing and installing
After replacement replace entire amount of coolant

2 - O-ring

Always replace

3 - Upper coolant hose

4 - Distributor connection piece

Secured to radiator with quick release coupling
Check for secure seating

5 - Clip

Check for secure seating

6 - A/C Cut-Out Thermal Switch -F163-

Only applies to models with air conditioning system up to build date 05.99, depending on version.

7 - Coolant hose

From cylinder head union

8 - Coolant hose

9 - Coolant hose

To coolant pipe on cylinder block, AEG engine.
To oil cooler on engines: AVH, AZG, BBW, BEV

10 - Connector

11 - Cover

Check with coolant system tester V.A.G 1274 and adapter V.A.G 1274/9
Pressure relief valve must open at a pressure of 1.4 to 1.6 bar

12 - 10 Nm

13 - Expansion tank

Perform leak test on coolant system with coolant system tester V.A.G 1274 and adapter V.A.G1274/8
Test pressure 1.4 to 1.6 bar

14 - Coolant hose

From throttle valve control module

15 - Coolant hose

To coolant pipe

16 - Air ducting

17 - Right coolant fan -V35-

Only models with optional equipment
Checking, Engines: AEG, AVH and AZG. Refer to Radiator coolant fan (vehicles with engine codes AEG, AVH and AZG), checking
Removing and installing. Refer to Radiator, removing and installing

18 - Fan ring

19 - Retaining clip

Check seated securely

20 - Coolant fan -V7-

Checking. Refer to Radiator coolant fan (vehicles with engine codes AEG, AVH and AZG), checking
Removing and installing. Refer to Radiator, removing and installing

21 - Bracket

For coolant fan connector

22 - Lower coolant hose

Secured to radiator by quick release coupling
Check seated securely

23 - Connector

For Coolant Fan Control (FC) thermal switch -F18-

24 - Coolant Fan Control (FC) thermal switch -F18-, 35 Nm

For Coolant fan -V7- and Right coolant fan -V35-
Switching temperatures:

1st Speed

on: 92...97 ° C
off: 84...91 ° C

2nd Speed

on: 99...105 ° C
off: 91...98 ° C

25 - Bracket

For radiator
Observe installed position
Different versions