Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Check pressure relief valve in cap.
β Screw cap -1- into adapter for cooling system tester -V.A.G
1274/9- -2-.
β Connect adapter for cooling system tester -V.A.G 1274/9- to
cooling system tester -V.A.G 1274 B- using connecting hose
supplied.
β Build up pressure using hand pump of cooling system tester.
β’
The pressure relief valve must open at a pressure of 1.6 to
1.8 bar.
β Renew filler cap, if pressure relief valve does not open as
described.
1.4
Flushing cooling system
β c1.4.2 ooling system, quick reference guideβ, page 313
1.4.1
Flushing cooling system
Note
β¦ The coolant must be drained before the system is flushed.
Then the cooling system must be filled with distilled water.
β¦ The cooling system is then flushed with approx. 19 litres
of distilled water. Then, the distilled water is replaced by
coolant (mixture ratio 50:50).
β¦ Never reuse old coolant.
β¦ For a quick reference guide, refer to β c1.4.2 ooling sysβ
tem, quick reference guideβ, page 313 . The quick reference
guide contains the basic steps of the procedure. It might be
helpful to print out the guide and tick off the corresponding
work steps after having performed them.
1. Cooling system/coolant
291
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Special tools and workshop
equipment required
β¦ Coolant flushing and filling device -VAS 531 007-
β¦ Test adapter -VAS 691 005/5-
β¦ Spring-type clip pliers -VAS 6362-
β¦ Drip tray for workshop hoist -VAS 6208-
β¦ Suction-jet pump from cooling system charge unit -VAS
6096-
β¦ Refractometer -T10007 A-
β¦ Compressed air connection with 6 β¦ 10 bar(g)
292
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β¦ Assembly tool -T10118-
Schematic overview of coolant flushing and filling device -VAS
531 007-:
1. Cooling system/coolant
293
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
1 - Container with distilled waβ
ter
β Fill with 30 l of distilled
water
β 19 litres of this are reβ
quired for flushing
β 11 litres are a safety reβ
serve and remain in the
canister
2 - Container with coolant
β Fill with 30 l of coolant
β Anti-freeze to apβ
prox. -36Β°C (mixture raβ
tio 50:50)
β 18 litres of this are reβ
quired for flushing
β 12 litres are a safety reβ
serve and remain in the
canister
3 - Empty container
β For used coolant
4 - Empty container
β For used coolant
5 - Suction hose
β Comes from connection
2 on sight glass
6 - Sight glass
β When opaque, clean
sight class with a nylon
brush
7 - Pump
β Cut-out pressure apβ
prox. 1.5 bar
8 - Valve block
β With pressure gauge and shut-off taps
9 - Drain hose
β Connected to valve block for releasing pressure
10 - Flushing hose
β Connected to breather hose of coolant expansion tank for flushing
β Comes from connection 1 on sight glass
β Seal with plugs when not in use
11 - Plug
12 - Hose clamps
β Qty. 4
13 - Cleaning adapter
β Approx. 15 cm in length
β For cleaning coolant flushing and filling device after flushing
14 - Extraction adapter
β Approx. 100 cm in length
294
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Connected to suction hose β Item 5 (page 294) (5) for extracting coolant
Procedure:
β Remove engine cover panel β page 81 .
β Drain coolant β page 278 .
β With coolant hose pulled off, pour approximately 1 litre of
distilled water into the coolant expansion tank.
β Drain coolant into drip tray.
β Re-connect detached coolant hoses.
Preparing coolant flushing and filling device -VAS 531 007-:
β Fill container Β»1Β« with 30 l of distilled water.
β Fill container Β»2Β« with 30 l of coolant. Mixture ratio is 50:50
for anti-freeze protection down to approx. -36Β°C.
β Empty containers Β»3Β« and Β»4Β«.
β Remove valve block from plug-in connector on equipment
trolley.
β Connect coolant flushing and filling device -VAS 531 007- to
battery.
Bleeding coolant flushing and filling device -VAS 531 007-:
β Connect suction hose -A- to container Β»1Β« with distilled waβ
ter.
β Connect drain hose -arrow- to plug-in connector -B- on valve
block.
β Close shut-off taps -A- and -B-.
1. Cooling system/coolant
295
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Note
Do not fit the valve block onto the test adapter -VAS 691 005/5-
yet. The filler hose must be bled first.
β Switch on pump for -VAS 531 007-.
β Open cut-off tap -A-.
β Open shut-off tap -B- briefly to bleed filler hose.
β Close shut-off taps -A- and -B-.
Connecting coolant flushing and filling device -VAS 531 007-:
β Open cap -arrow- for coolant expansion tank.
β Screw test adapter -2- (-VAS 691 005/5-) onto coolant exβ
pansion tank -1-.
β Pull drain hose -arrow- off plug-in connector -B- on valve
block.
296
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Fit valve block -1- onto test adapter -2-.
β Connect suction-jet pump -2- from -VAS 6096- to plug-in
connector -B- on valve block -1-.
Filling cooling system with distilled water:
1. Cooling system/coolant
297
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Place end of vent hose -8- of suction-jet pump into a conβ
tainer.
β Connect compressed air hose -6- to suction-jet pump -7-.
β Open shut-off tap -B- on valve block -5-.
β’
The suction-jet pump reduces pressure in the cooling sysβ
tem to below atmospheric pressure. The pointer of the presβ
sure gauge must fall to at least -0.85 bar.
β Close shut-off tap -B-.
β Pull off compressed air hose -6-.
β Observe pressure gauge. The pointer of the pressure gauge
must remain stationary at -0.85 bar at least. The vacuum in
the cooling system is then sufficient for subsequent filling.
Note
β¦ If the vacuum drops, the cooling system must be checked for leaks.
β¦ The vacuum that builds up depends on the pressure in the compressed air system.
β’
The pump of the -VAS 531 007- must be switched on.
298
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Β»SlowlyΒ« open shut-off tap -A-.
β’
The vacuum in the cooling system causes the distilled water
to be drawn into the cooling system, and thus causes the
cooling system to be filled. In addition, the pump of the -VAS
531 007- feeds distilled water into the coolant expansion
tank.
β Fill cooling system until pressure of approx. 1 bar can be
read off gauge.
After filling, the pressure in the coolant expansion tank must be
released. Proceed as follows to do this:
β Close shut-off tap -A- after filling.
β Remove suction-jet pump -2- from valve block -1- .
β Connect drain hose -arrow- to plug-in connector. Open shut-
off tap -B-, and leave it open so that the pressure in the
cooling system releases.
β Remove air filter housing β page 443 .
1. Cooling system/coolant
299
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β With ignition switched off, release and pull off electrical conβ
nector -1- on engine temperature sender -G62- -3-.
Note
If the connector of the coolant temperature sender -G62- is
pulled off, the actuator for engine temperature regulation -N493-
will open and the radiator fan will start to operate as soon as the
engine is started.
β Temporarily, install air filter housing so that corresponding
location on cylinder head remains free. Air filter housing can
be placed on battery, for example.
β Start engine and increase speed for approximately 1 minute.
Then, switch off engine.
Flushing cooling system with distilled water:
β’
Shut-off tap -A- is closed; shut-off tap -B- is open.
β Remove breather hose -2- from coolant expansion tank -1- .
β Connect breather hose -2- from coolant expansion tank to
flushing hose -1-.
300
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Seal connection on coolant expansion tank using plug -3-.
Secure plug with a hose clip.
β Close shut-off tap -B-.
Note
β¦ Flushing of the cooling system will now begin. Please note
the fill level of the tanks in order to assure correct flushing
capacities.
β¦ The engine is running at idling speed during the entire flushβ
ing process.
β Start engine and allow to idle.
β Set heater temperature to βHIβ.
β Switch off air conditioner compressor. To do this, press AC
button.
1 β Flushing cylinder block with distilled water:
1. Cooling system/coolant
301
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Clamp off breather hoses for heat exchanger and cylinder
head with hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 9 litres of distilled water through engine.
β Close shut-off tap -A-.
2 β Flushing cylinder head with distilled water:
302
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Clamp off breather hoses for heat exchanger and radiator
with hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 2 litres of distilled water through engine.
β Close shut-off tap -A-.
3) Flushing heat exchanger for heater with distilled water:
1. Cooling system/coolant
303
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Clamp off breather hoses for radiator and cylinder head with
hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 2 litres of distilled water through engine.
β Close shut-off tap -A-.
4 Flushing entire cooling system
β Remove any hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 6 litres of distilled water through engine.
β Close shut-off tap -A-.
304
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Flushing cooling system with coolant
β Connect suction hose -A- to container -2- for coolant.
1 β Flushing cylinder block with coolant:
β Clamp off breather hoses for heat exchanger and cylinder
head with hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 5 litres of coolant through engine.
1. Cooling system/coolant
305
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Close shut-off tap -A-.
2 β Flushing cylinder head with coolant:
β Clamp off breather hoses for heat exchanger and radiator
with hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 5 litres of coolant through engine.
β Close shut-off tap -A-.
3) Flushing heat exchanger for heater with coolant:
306
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Clamp off breather hoses for radiator and cylinder head with
hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 2 litres of coolant through engine.
β Close shut-off tap -A-.
4 Flushing entire cooling system
β Remove any hose clamps.
β Open shut-off tap -A- on valve block.
β’
Pump approx. 6 litres of coolant through engine.
β Close shut-off tap -A-.
1. Cooling system/coolant
307
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
The flushing process is now completed. Switch off the pump,
and switch off the engine.
Removing coolant flushing and filling device -VAS 531 007-:
β Open shut-off tap -B-, and leave it open so that the pressure
in the cooling system releases.
β Pull plug -3- off coolant expansion tank, and reconnect
breather hose -2-.
β Use plug to seal flushing hose -1-.
β Remove valve block -1- and test adapter -2-.
β If anti-freeze protection down to approx. -36Β°C is required,
drain coolant expansion tank empty, and fill it with coolant
concentrate.
Note
The coolant flushing and filling device -VAS 531 007- can be
used for extracting coolant β page 310 .
β The coolant level must be at the Β»weld seamΒ« -arrow-.
308
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β Reattach electrical connector -1- on coolant temperature
sender -G62- -3-.
β Install air filter housing at its final installation position.
β Separating the connectors caused entries to be stored in
the event memory of the engine control unit. Clear event
memory β Vehicle diagnostic tester.
β Tighten cap of coolant expansion tank until it engages.
β Then run engine at idling speed until radiator fan cuts in.
Check coolant level and anti-freeze protection
β If the frost protection is not sufficient, extract coolant from
coolant expansion tank. Ensure correct anti-freeze protecβ
tion by filling more coolant concentrate.
β After each time coolant concentrate has been filled, run enβ
gine at increased engine speed for about 2 minutes, and
check anti-freeze protection again.
β’
Anti-freeze protection must be guaranteed down to -25Β°C as
a minimum and, in countries with arctic conditions, down
to approx. -36Β°C. Increasing the anti-freeze protection is
permissible only if climatic conditions require stronger anti-
freeze protection. It may, however, be increased only to a
maximum of -48Β°C. Otherwise, the cooling effect will be imβ
paired.
β’
When the engine is at operating temperature, the coolant
level must be at the Β»weld seamΒ« -arrow-.
1. Cooling system/coolant
309
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
β’
When the engine is cold, the coolant level must be approx.
5 mm above the max. marking -arrow-.
Note
This excessive amount of coolant level is necessary since the
coolant level may decrease automatically due to bleeding procβ
ess.
Extracting coolant:
310
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Note
Use the extraction adapter β Item 14 (page 294) (14) for extracting the coolant.
β Detach suction hose -5- from container -2-.
β Fit extraction adapter -12- onto plug-in connector of suction
hose -5-.
β Switch on pump -7-, and open shut-off taps -A- and -B- on
valve block -8-.
β Use extraction adapter -12- to extract any excess coolant.
β Close shut-off taps on valve block, and switch off pump.
Cleaning coolant flushing and filling device -VAS 531 007-:
1. Cooling system/coolant
311
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Note
β¦ If coolant remains in the sight glass for longer periods of time, the sight glass may become opaque.
Therefore, the sight glass must be flushed with distilled water after the flushing procedure has been
completed.
β¦ If the sight glass is opaque, it must be cleaned with a nylon brush.
β¦ Use cleaning adapter β Item 13 (page 294) (13) for flushing.
β Connect suction hose -5- to container -1- for distilled water.
β Fit flushing hose -10- onto cleaning adapter -9-. Fit cleaning
adapter -9- to plug-in connector -B- on valve block -8-.
β Open shut-off valves -A- and -B- on valve block -8-.
β Switch on pump -7-, and pump distilled water through hoses
until coolant has been flushed out of sight glass -6-.
β Switch off pump, and close shut-off taps.
β Remove cleaning adapter, and seal flushing hose with plug.
312
Rep. gr.19 - Cooling
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
1.4.2
Flushing cooling system, quick referβ
ence guide
Note
The quick reference guide contains the basic steps of the proβ
cedure. It might be helpful to print out the guide and tick off
the corresponding work steps after having performed them. For
a detailed description of the necessary work steps, refer to β
c1.4.1 ooling systemβ, page 291 .
Step Measure
Volume of flushβ
ing medium
1
2
3
4
5
Draining coolant
---
---
---
---
Fill cooling system with distilled water
Pull connector off coolant temperature sender -G62-
Run engine at idling speed
Clamp off breather hose for heat exchanger -1- and cylinder head -2-; flush
9 l of distilled waβ
cooling system
ter
6
7
8
9
Clamp off breather hose for heat exchanger -1- and radiator -3-; flush cooling
system
2 l of distilled waβ
ter
Clamp off breather hose for cylinder head -2- and radiator -3-; flush cooling
2 l of distilled waβ
system
ter
Remove all clamps; flush cooling system
6 l of distilled waβ
ter
5 l of coolant
(anti-freeze
-36Β°C)
Clamp off breather hose for heat exchanger -1- and cylinder head -2-; flush
cooling system
10
11
12
Clamp off breather hose for heat exchanger -1- and radiator -3-; flush cooling
system
5 l of coolant
(anti-freeze
-36Β°C)
2 l of coolant
(anti-freeze
-36Β°C)
6 l of coolant
(anti-freeze
-36Β°C)
Clamp off breather hose for cylinder head -2- and radiator -3-; flush cooling
system
Remove all clamps; flush cooling system
13
14
15
16
17
18
Switch off engine
---
---
---
---
---
---
Drain coolant expansion tank empty, and fill with coolant concentrate
Fit connector of coolant temperature sender -G62-
Detach coolant flushing and filling device, and close coolant expansion tank
Run engine until radiator fan starts to operate.
Check frost protection
1. Cooling system/coolant
313
Arteon 2018 β€, Arteon 2021 β€, Arteon Shooting Brake 2021 β€, Golf 2013 β€, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
1 - Breather hose of heat exβ
changer for heater unit
2 - Breather hose for cylinder
head
3 - Breather hose of radiator
for engine coolant
314
Rep. gr.19 - Cooling
2024 VW Tiguan Owner's Manual
