ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
1 - Plug
❑ Renew after removing
❑ 10 Nm
2 - Seal
❑ 2x
❑ Renew after removing
3 - Desiccant bag
❑ Renew after removing
❑ ⇒ Rep. gr. 87; Remov‐
ing and installing desic‐
cant bag/dryer
4 - Filter
❑ Renew after removing
5 - Condenser
❑ ⇒ Rep. gr. 87; Remov‐
ing and installing con‐
denser - R1234yf
6 - Bolt
❑ ⇒ Rep. gr. 87; Explo‐
ded view - refrigerant
lines
7 - Seal
❑ ⇒ Rep. gr. 87; Explo‐
ded view - refrigerant
lines
8 - Refrigerant line
❑ ⇒ Rep. gr. 87; Explo‐
ded view - refrigerant
lines
9 - Refrigerant line
❑ ⇒ Rep. gr. 87; Explo‐
ded view - refrigerant lines
3.7
Removing and installing refrigerant
pressure and temperature sender
[G395], R1234yf
3.7.1
Removing and installing refrigerant
pressure and temperature sender
G395
Special tools and workshop equipment required
♦ engine bung set -VAS 6122-
♦ socket -T40284-
3. Refrigerant circuit
25
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-.
– Unfasten coolant expansion tank and move slightly to side
⇒ Rep. gr. 19; Cooling system/coolant; Removing and instal‐
ling coolant expansion tank.
– Unplug electrical connector -1-.
– Check refrigerant line connection -4- and refrigerant pres‐
sure and temperature sender -G395- -2- for dirt and clean if
necessary.
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.
– If refrigerant escapes from the refrigerant line for more
than 1 second when the pressure sender is unfastened,
tighten the pressure sender and renew the defective non-
return valve.
– Extract/drain refrigerant and then immediately open up re‐
frigerant circuit.
– Unscrew sender -2- using socket -T40284-; at the same time
counterhold at refrigerant line -4- using open-end spanner.
Installing
Installation is carried out in reverse order; note the following:
– Check that refrigerant line is seated correctly and screw
in and tighten refrigerant pressure and temperature sender
-G395-.
Tightening torques
♦ ⇒ Rep. gr. 87; Exploded view - refrigerant lines
26
Rep. gr.87 - Air conditioning system
ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
3.8
Removing and installing refrigerant
pressure and temperature sender
[G395], R744
3.8.1
Removing and installing refrigerant
pressure and temperature sender
G395
Special tools and workshop equipment required
♦ engine bung set -VAS 6122-
♦ socket -T40284-
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.
– Unclip coolant hoses -1- and push them to side.
– Mark electrical connector -5- to avoid interchange and un‐
plug it.
– Check refrigerant line connection -1- and refrigerant pres‐
sure and temperature sender -G395- -4- for dirt and clean if
necessary.
3. Refrigerant circuit
27
2024 VW ID.4 Owner's Manual
