Table of Contents > Cooling > Cooling system/coolant > Removing and installing coolant expansion tank

VW ID.4 Electric rear-wheel and all-wheel drive ➜ Removing and installing coolant expansion tank

ID.4 2021 ➤, ID.3 2020 ➤  
Electric rear-wheel drive EIP220 and all-wheel drive EIA200, EIP220 - Edition 11.2021  
– Connect electric vacuum pump -D- to battery -A-, and switch  
it on.  
– Open shut-off tap -B-.  
– Remove hose clips -H-, and continue with the filling process  
⇒ page 69 .  
2.10  
Removing and installing coolant ex‐  
pansion tank  
Special tools and workshop equipment required  
♦ hose clamps, up to 25 mm -3094-  
Removing  
CAUTION  
The cooling system may be under pressure. Risk of scalding  
due to hot steam and hot coolant  
Danger of scalding skin and other parts of the body  
– Put on protective gloves.  
– Put on safety goggles.  
– Cover filler cap on expansion tank with a suitable cloth and  
open carefully to release pressure.  
– Open filler cap on coolant expansion tank -arrow- briefly to  
release pressure in cooling system and then tighten cap  
again.  
2. Cooling system/coolant  
75  
ID.4 2021 ➤, ID.3 2020 ➤  
Electric rear-wheel drive EIP220 and all-wheel drive EIA200, EIP220 - Edition 11.2021  
– Unplug electrical connector -1- from coolant shortage indica‐  
tor sender -G32-.  
– Disconnect electrical wire -3- from coolant expansion tank  
-2-.  
– Press catch -arrow- forwards and swivel coolant expansion  
tank -2- out of mounting.  
– Clamp off coolant hoses -1- and -2- using hose clamps, up  
to 25 mm -3094-.  
– Open hose clamps and unplug coolant hose -1-.  
– Seal connection on coolant expansion tank with plug.  
– Turn coolant expansion tank around.  
– Open hose clamps and unplug coolant hose -2-.  
– Empty coolant expansion tank.  
Installing  
Installation is carried out in reverse order; note the following:  
76  
Rep. gr.19 - Cooling  
ID.4 2021 ➤, ID.3 2020 ➤  
Electric rear-wheel drive EIP220 and all-wheel drive EIA200, EIP220 - Edition 11.2021  
– Plug in coolant hoses and secure with hose clamps. Note  
installation markings when doing so.  
– Remove hose clamps.  
– Fit coolant expansion tank in mounting and engage.  
– Fill up coolant and check filling quality ⇒ Rep. gr. 19; Check‐  
ing filling quality.  
2.11  
Checking filling quality  
Special tools and workshop equipment required  
♦ adapter -VAS 691 005/5-  
♦ cooling system tester -V.A.G 1274 B-  
Note  
It is necessary to make sure that there is no air in the cooling  
system. If there is any air in the cooling system, the coolant  
level will drop far below the permissible level in the course of  
time. Overheating of the motor is also possible.  
CAUTION  
The cooling system may be under pressure. Risk of scalding  
due to hot steam and hot coolant  
Danger of scalding skin and other parts of the body  
– Put on protective gloves.  
– Put on safety goggles.  
– Cover filler cap on expansion tank with a suitable cloth and  
open carefully to release pressure.  
– Open sealing cap of coolant expansion tank -arrow-.  
– Check coolant level. It must be approx. 10 mm above the  
max. marking or be at the max. marking -1-. If necessary,  
top up with coolant.  
2. Cooling system/coolant  
77  

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