Volkswagen ID.4: Overview of fitting locations - air conditioning system, R134a/R1234yf
Volkswagen ID.4 (E21) 2021-2025 Service Manual / Heating, air conditioning system /
Air conditioning system / Overview of fitting locations - air conditioning system, R134a/R1234yf
Overview of fitting locations - components not located in vehicle interior
- Condenser
- ⇒ Rep. gr. 87 ; Assembly
overview - condenser
- ⇒ Rep. gr. 87 ; Removing
and installing
condenser
- Air conditioner compressor
- VX81-
- With electrical air conditioner
compressor -
V470- and control unit
for air conditioner compressor
- J842-
- ⇒ Rep. gr. 87 ;
Removing and installing
air conditioner
compressor VX81
- Pressure sender for refrigerant
circuit - G805
- ⇒ Rep. gr. 87 ; Removing
and installing
pressure sender for refrigerant
circuit G805
- Refrigerant pressure and
temperature sender - G395-
- ⇒ Rep. gr. 87 ;
Removing and installing
refrigerant pressure
and temperature sender
G395
- Heat exchanger for highvoltage
battery with refrigerant
expansion valve 1 - N636-
- ⇒ Rep. gr. 87 ; Removing
and installing
heat exchanger for high-voltage battery
- Service connection (low-pressure side)
- ⇒ Rep. gr. 87 ; Removing and installing evacuating and charging valve
(low-pressure and high-pressure
sides)

- Refrigerant shut-off valve for heater and air conditioning unit -
N541
- ⇒ Rep. gr. 87 ; Removing and installing refrigerant shut-off valve for
heater and air conditioning unit
N541
- Service connection (high-pressure side)
- ⇒ Rep. gr. 87 ; Removing and installing evacuating and charging valve
(low-pressure and high-pressure
sides)
- Air intake box of heater and air conditioning unit
- ⇒ Rep. gr. 87 ; Removing and installing air intake box of heater and air
conditioning unit
- External air quality and air humidity sensor - G935-
- ⇒ Rep. gr. 87 ; Removing and installing external air quality and air
humidity sensor G935
- Fresh air intake
- ⇒ Rep. gr. 87 ; Removing and installing fresh air intake
- Fresh air blower control unit - J126-
- ⇒ Rep. gr. 87 ; Removing and installing fresh air blower control unit
J126
- Control motor for fresh air and air recirculation flap - VX96-
- ⇒ Rep. gr. 87 ; Removing and installing control motor for fresh air and
air recirculation flap VX96
- PTC heater element 3 - Z132-
- ⇒ Rep. gr. 87 ; Removing and installing heater element 3 Z132
- Desiccant bag
- ⇒ Rep. gr. 87 ; Removing and installing desiccant bag/dryer
- Ambient temperature sensor - G17-
- ⇒ Rep. gr. 87 ; Removing and installing ambient temperature sensor G17
Overview of fitting locations - components not located in vehicle interior
Overview shown for a left-hand drive vehicle as an example
- Left vent temperature
sender - G150-
- ⇒ Rep. gr. 87 ; Removing
and installing
left vent temperature
sender [G150[
- Rain and light sensor -
G397-
- With humidity sender
for air conditioning system
- G260-
- With photosensor -
G107-
- ⇒ Electrical system;
Rep. gr. 92 ; Windscreen
wiper system;
Removing and installing
rain and light sensor
[G397]
- Control motor
- Shown as an example
for all control motors
- ⇒ Rep. gr. 87 ; Overview
of fitting locations
- front control motors
- Heating condenser
- Depending on equipment/
version
- ⇒ Rep. gr. 87 ; Removing
and installing
heat condenser
- Evaporator
- ⇒ Rep. gr. 87 ; Removing
and installing
evaporator

- Evaporator temperature sensor - G308-
- ⇒ Rep. gr. 87 ; Removing and installing evaporator temperature sensor
[G308]
- Heater and air conditioning system control unit - J979-
- Right-hand drive vehicle: mirror image
- ⇒ Rep. gr. 87 ; Removing and installing heater and air conditioning
system control unit [J979]
- Condensation drain hose
- ⇒ Rep. gr. 87 ; Checking condensation drain
- ⇒ Rep. gr. 87 ; Removing and installing condensation drain
- Right vent temperature sender - G151-
- ⇒ Rep. gr. 87 ; Removing and installing right vent temperature sender
[G151]
- Right footwell vent temperature sender - G262-
- Rep. gr. 87 ; Removing and installing right footwell vent temperature
sender [G262]
- Sensor for interior carbon dioxide concentration - G929-
- Depending on equipment/version
- ⇒ Rep. gr. 87 ; Removing and installing sensor for interior carbon
dioxide concentration [G929]
- High-voltage heater (PTC) - ZX17-
- With high-voltage heater (PTC) control unit - J848-
- With high-voltage heater (PTC) - Z115-
- ⇒ Rep. gr. 87 ; Removing and installing high voltage heater (PTC) [ZX17]
- Vehicle interior temperature sensor - G1090-
- ⇒ Rep. gr. 87 ; Removing and installing vehicle interior temperature
sensor [G1090]
- Display unit for front information display and operating unit control
unit - J685-
- ⇒ Rep. gr. 87 ; Removing and installing display unit for front
information display and operating unit
control unit [J685]
- Left footwell vent temperature sender - G261-
- ⇒ Rep. gr. 87 ; Removing and installing left footwell vent temperature
sender [G261]
- Rear vent temperature sender - G174-
- Depending on equipment/version
- ⇒ Rep. gr. 87 ; Removing and installing rear vent temperature sender
[G174]
- Operating and display unit for rear air conditioning system - E265-
- Depending on equipment/version
- ⇒ Rep. gr. 87 ; Removing and installing operating and display unit for
rear air conditioning system
[E265]
Volkswagen ID.4 (E21) 2021-2025 Service Manual
Overview of fitting locations - air conditioning system, R134a/R1234yf
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