ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
Installing
Install in reverse order of removal, observing the following:
After renewing dryer:
– Observe procedure for renewal of refrigerant circuit compo‐
nents ⇒ Air conditioning system with refrigerant R744 – Gen‐
eral notes; Rep. gr. 87; Refrigerant circuit; Renewing compo‐
nents.
– Carry out function “Open electrically actuated valves to
drain, evacuate or charge refrigerant circuit” using ⇒ Vehicle
diagnostic tester ⇒ Rep. gr. 00; Access to diagnoses.
– ⇒ Air conditioning systems with refrigerant R744 – General
notes; Rep. gr. 87; Working with air conditioner service sta‐
tion; Charging refrigerant circuit.
Tightening torques
♦ ⇒ Rep. gr. 87; Assembly overview – valve unit of heat pump
3.16
Removing and installing evacuating
and charging valves on low and high-
pressure side, R1234yf
3.16.1
Removing and installing evacuating
and charging valve (low-pressure and
high-pressure sides)
Special tools and workshop equipment required
♦ engine bung set -VAS 6122-
♦ socket -T10364/4A-
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 protective cap -3-.
36
Rep. gr.87 - Air conditioning system
ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
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 valve core -2- using socket -T10364/4A-.
Installing
Installation is carried out in reverse order; note the following:
– ⇒ Air conditioners with refrigerant R1234yf - General infor‐
mation; Rep. gr. 87; Working with the air conditioner service
station; Charging refrigerant circuit
Tightening torques
♦ ⇒ Rep. gr. 87; Exploded view - refrigerant lines
3.17
Removing and installing evacuating
and charging valves on low and high-
pressure side, R744
3.17.1
Removing and installing evacuating
and charging valve (low-pressure and
high-pressure sides)
Special tools and workshop equipment required
♦ engine bung set -VAS 6122-
♦ socket -T10364/5-
Removing
Seal off open pipes/lines and connections immediately with
clean plugs from engine bung set -VAS 6122-.
– 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.
– Detach protective cap -3-.
3. Refrigerant circuit
37
2024 VW ID.4 Owner's Manual
