ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
♦ ⇒ Rep. gr. 87; Assembly overview – air intake unit of heater
and air conditioning unit
♦ ⇒ General body repairs, exterior; Rep. gr. 66; Underbody
cladding; Assembly overview – underbody cladding
4.3
Removing and installing refrigerant ex‐
pansion valve 1 [N636]
Special tools and workshop equipment required
♦ ESD workplace -VAS 6613-
Removing
Refrigerant expansion valve 1 -N636- and refrigerant shut-off
valve 1 -N696- cannot be renewed individually.
– Remove heat pump valve unit ⇒ Rep. gr. 87; Removing and
installing heat pump valve unit.
NOTICE
Risk of damage to electrical components.
Electrostatic charge may damage electrical components.
– Work on electrical components must always be carried out
at an ESD workplace.
– Place heat pump valve unit onto ESD workplace -VAS
6613-.
– Unscrew bolts -1-, -2- and -3-.
– Mark (to avoid interchanging) and disconnect electrical con‐
nectors -2-.
– Unscrew bolts -3-.
– Remove refrigerant expansion valve 1 -N636- and refriger‐
ant shut-off valve 1 -N696--1-.
4. Valve unit of heat pump
89
ID.4 2021 ➤
Heating, air conditioning system - Edition 09.2021
Installing
Install in reverse order of removal, observing the following:
– Install seals and captive fasteners free of oil.
When renewing expansion valve/shut-off valve:
– Carry out function “Addressing routine for refrigerant valves”
using ⇒ Vehicle diagnostic tester ⇒ Rep. gr. 00; Access to
diagnoses.
Tightening torques
♦ ⇒ Rep. gr. 87; Assembly overview – valve unit of heat pump
4.4
Removing and installing refrigerant ex‐
pansion valve 2 N637
Special tools and workshop equipment required
♦ ESD workplace -VAS 6613-
Removing
Refrigerant expansion valve 2 -N637- and refrigerant expansion
valve 3 -N638- cannot be renewed separately.
– Remove heat pump valve unit ⇒ Rep. gr. 87; Removing and
installing heat pump valve unit.
NOTICE
Risk of damage to electrical components.
Electrostatic discharge can cause damage to electrical com‐
ponents.
– Work on electrical components must always be performed
on an ESD workplace.
– Place heat pump valve unit on ESD workplace -VAS 6613-.
– Remove bolts -1-, -2- and -3-.
– Mark electrical connectors -2- to avoid interchange and un‐
plug them.
90
Rep. gr.87 - Air conditioning system
2024 VW ID.4 Owner's Manual
