ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
♦ ⇒ Rep. gr. 19; Radiator, radiator fan; Assembly overview –
radiator, radiator fan
3.13
Removing and installing condens‐
er/gas cooler, R744
3.13.1
Removing and installing gas cooler
Special tools and workshop equipment required
♦ engine bung set -VAS 6122-
Removing
Seal off open pipes/lines and connections immediately with
clean plugs from engine bung set -VAS 6122-.
If gas cooler is renewed:
– Observe procedure for renewing components of refrigerant
circuit ⇒ Air conditioners with refrigerant R744 - General
information; Rep. gr. 87; Refrigerant circuit; Renewing com‐
ponents.
– Perform function “Opening electrically actuated valves in re‐
frigerant circuit for extracting, evacuating and charging” with
⇒ Vehicle diagnostic tester ⇒ Rep. gr. 00; Starting diagnosis.
– ⇒ Air conditioners with refrigerant R744 - General informa‐
tion; Rep. gr. 87; Working with the air conditioner service
station; Discharging refrigerant circuit.
– Disconnect refrigerant lines from gas cooler ⇒ Rep. gr. 87;
Detaching and attaching refrigerant lines at condenser/gas
cooler.
– Disassemble radiator module ⇒ Rep. gr. 19; Radiator/radia‐
tor fans; Dismantling and assembling radiator module.
Installing
Installation is carried out in reverse order; note the following:
– Install seals and retaining elements, making sure they are
free of oil.
– Perform function “Opening electrically actuated valves in re‐
frigerant circuit for extracting, evacuating and charging” with
⇒ Vehicle diagnostic tester ⇒ Rep. gr. 00; Starting diagnosis.
– ⇒ Air conditioners with refrigerant R744 - General informa‐
tion; Rep. gr. 87; Working with the air conditioner service
station; Charging refrigerant circuit
Tightening torques
♦ ⇒ Rep. gr. 87; Exploded view - refrigerant lines
♦ ⇒ Rep. gr. 19; Radiator/radiator fans; Exploded view - radia‐
tor/radiator fans
3.14
Removing and installing desiccant bag/
dryer, R1234yf
3.14.1
Removing and installing desiccant bag
Special tools and workshop equipment required
♦ engine bung set -VAS 6122-
32
Rep. gr.87 - Air conditioning system
ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
Removing
Seal off open pipes/lines and connections immediately with
clean plugs from engine bung set -VAS 6122-.
– ⇒ Air conditioners with refrigerant R1234yf - General infor‐
mation; Rep. gr. 87; Working with the air conditioner service
station; Discharging refrigerant circuit
– Remove condenser ⇒ Rep. gr. 87; Removing and installing
condenser/gas cooler.
CAUTION
Risk of frostbite from escaping pressurised refrigerant
Risk of frostbite on skin and other parts of the body
– Put on protective gloves.
– Put on safety goggles.
– Extract/drain refrigerant and then immediately open up re‐
frigerant circuit.
– Extract/drain refrigerant again if more than 10 minutes
have passed since initial extraction and refrigerant circuit
has not been opened up. Renewed evaporation has cre‐
ated pressure in the refrigerant circuit.
– Remove plug -1- from condenser -2-.
– Take desiccant bag -1- out of condenser -2-.
– Pull filter -2- out of condenser -3- using a piece of wire -1-.
3. Refrigerant circuit
33
2024 VW ID.4 Owner's Manual
