What to do if your CarPro-Tec Fusion 4G no longer responds?

A technical error may occur in individual CarPro-Tec Fusion 4G devices that were delivered between 17 March 2025 and 4 May 2025.

The error:

The system can ‘freeze’ after some time in the armed state.

This means that

• Control via app or remote control no longer works.
• Sensors (e.g. door contacts) and room volume sensor no longer trigger an alarm.
• The GPS signal is still partially transmitted, which makes detection more difficult.

Self-test

To check whether your CarPro-Tec is affected, please carry out the following 4-day test:

1. Set the sensitivity of the room volume sensor to 0%.
2. Leave your CarPro-Tec armed for 4 days.
3. No alarm should be triggered in between. 
4. After this time, please check:

• Can the device be disarmed via the app or remote control?
• Does the system respond to triggered sensors (e.g. open window contact)?

❗ If neither is the case, the error mentioned is most likely present.

Procedure

In this case, please create a ticket. (Create ticket) and indicate in the description that you have carried out the 4-day test and your CarPro-Tec has frozen.

We will then take care of a quick replacement of your device under warranty.

Note:

The error can be rectified temporarily by doing the following:

1. Switch the device off completely using the SYSTEM button (not the 4G button).
2. Then switch the system on again.

The device will then work normally again.