Volkswagen ID.4: Anti-theft alarm system
Assembly overview - interior monitor
Assembly overview - interior monitoring

- Alarm horn - H12-
- ⇒ Rep. gr. 96 ; Removing
and installing
alarm horn [H12]
- Shear nut
- Bracket for alarm horn -
H12-
- Nut
- Anti-theft alarm sensor -
G578-
- ⇒ Rep. gr. 96 ; Removing
and installing
anti-theft alarm sensor
[G578]
- Rear window - ZX1-
- On-board supply control
unit - J519-
- ⇒ Rep. gr. 97 ; Removing
and installing
onboard supply control
unit [J519]
Removing and installing alarm horn [H12]
Alarm horn - H12- is referred to hereafter as alarm horn.
Removing
- Remove plenum chamber cover ⇒ General body repairs,
exterior; Rep. gr. 50 ; Plenum chamber bulkhead; Removing
and installing plenum chamber cover .
Note
The shear nut -3- cannot be removed without being damaged.
- Destroy shear nut -3- using suitable workshop equipment.
- Remove alarm horn -2-.
- Disconnect electrical connector -1-.
- Remove alarm horn -2-.
![Volkswagen ID.4. Removing and installing alarm horn [H12]](images/manuals/353/volkswagen_id_4_assembly_overview_interior_monitor_2605.webp)
Installing
Install in the reverse order of removal, observing the following:
- Tighten new shear nut until head shears off.
Tightening torques
- ⇒ Rep. gr. 96 ; Assembly overview - interior monitoring
Removing and installing anti-theft alarm sensor [G578]
Anti-theft alarm sensor - G578- will henceforth be referred to as
"sensor".
Front roof module - WX3- is referred to hereafter as roof module.
Removing
- Remove front roof module ⇒ Rep. gr. 96 ; Removing and
installing front roof module [WX3] .
- Release locking devices -2- in direction of -arrow A-.
- Remove sensors -1- from roof module.
![Volkswagen ID.4. Removing and installing anti-theft alarm sensor [G578]](images/manuals/353/volkswagen_id_4_removing_and_installing_anti_theft_alarm_sensor_g_2606.webp)
- Release locking devices -2- in direction of -arrow A-.
- Remove sensor -1-.
![Volkswagen ID.4. Removing and installing anti-theft alarm sensor [G578]](images/manuals/353/volkswagen_id_4_removing_and_installing_anti_theft_alarm_sensor_g_2607.webp)
Installing
Install in the reverse order of removal, observing the following:
If the anti-theft alarm sensor has been renewed:
- Carry out required function/functions using ⇒ Vehicle diagnostic
tester ⇒ Rep. gr. 00 ; Access to diagnoses .