Question 1

Manoeuvring system not working

Accepted Answer

Possible cause: Power supply issue or defective fuse in the battery cable. Check the power supply to ensure the green LED of the control unit is lit. Replace a defective fuse in the battery cable only with an original spare part. Interrupt the power supply for at least 20 seconds, then restore it. If the issue remains unresolved, contact an authorised service agent.

Question 2

Manoeuvring system not working and red LED on control unit flashing

Accepted Answer

Possible cause: Control unit has overheated. Interrupt the power supply with the battery cut-off switch and remove the key. Allow the control unit to cool down for at least 20 minutes before restarting the manoeuvring system. If the issue persists, have repairs carried out by a specialist.

Question 3

Manoeuvring system not working, red and green LED flashing on the control unit

Accepted Answer

Possible cause: Overloading of the power electronics due to an overloaded caravan or excessive slope. Interrupt the power supply for at least 20 seconds and then restore the power supply. If the issue remains unresolved, contact an authorised workshop.

Question 4

Manoeuvring system not responding to commands from remote control or only with interruptions, with symbols flashing on the remote control

Accepted Answer

Possible cause: Remote control battery charge is too low or manoeuvring system battery is low. Check the remote control batteries and replace if necessary. Check the battery of the manoeuvring system (green LED on control unit flashes) and charge or replace the battery as necessary.

Question 5

Drive roller sliding off tyre

Accepted Answer

Possible cause: Incorrect tyre pressure, worn tyre tread, or incorrect distance between tyres and drive roller. Check the tyre pressure and adapt if necessary. Check the tyre tread and change the tyres if necessary. Disengage the manoeuvring system and measure the distance between the tyres and drive roller, which must be exactly 20 mm. If adjustment is required, have repairs carried out by a specialist.

Question 6

Manoeuvring system not disengaging

Accepted Answer

Possible cause: Electrical disengaging failure or discharged body battery. Disengage the manoeuvring system manually using the special spanner supplied. Once the battery has been charged or the defect remedied, have the system checked by an authorised service agent.

Question 7

Continuous fault, such as a defective drive motor.

Accepted Answer

Apply the handbrake, turn off the remote, wait 2 seconds and turn it back on, or perform a system reset.

Question 8

No radio connection established within 10 seconds of turning on the remote.

Accepted Answer

Ensure control unit is powered and repeat startup.

Error Code / Indicator	Symptom / Meaning	Step-by-Step DIY Fix	Suggested Actions
`N/A`	Manoeuvring system not working Possible Cause: Power supply issue or defective fuse in the battery cable	Check the power supply to ensure the green LED of the control unit is lit. Replace a defective fuse in the battery cable only with an original spare part. Interrupt the power supply for at least 20 seconds, then restore it. If the issue remains unresolved, contact an authorised service agent.	DIY Check / Tech Fallback
`N/A`	Manoeuvring system not working and red LED on control unit flashing Possible Cause: Control unit has overheated	Interrupt the power supply with the battery cut-off switch and remove the key. Allow the control unit to cool down for at least 20 minutes before restarting the manoeuvring system. If the issue persists, have repairs carried out by a specialist.	DIY Check / Tech Fallback
`N/A`	Manoeuvring system not working, red and green LED flashing on the control unit Possible Cause: Overloading of the power electronics due to an overloaded caravan or excessive slope	Interrupt the power supply for at least 20 seconds and then restore the power supply. If the issue remains unresolved, contact an authorised workshop.	DIY Check / Tech Fallback
`N/A`	Manoeuvring system not responding to commands from remote control or only with interruptions, with symbols flashing on the remote control Possible Cause: Remote control battery charge is too low or manoeuvring system battery is low	Check the remote control batteries and replace if necessary. Check the battery of the manoeuvring system (green LED on control unit flashes) and charge or replace the battery as necessary.	DIY Safe
`N/A`	Drive roller sliding off tyre Possible Cause: Incorrect tyre pressure, worn tyre tread, or incorrect distance between tyres and drive roller	Check the tyre pressure and adapt if necessary. Check the tyre tread and change the tyres if necessary. Disengage the manoeuvring system and measure the distance between the tyres and drive roller, which must be exactly 20 mm. If adjustment is required, have repairs carried out by a specialist.	DIY Check / Tech Fallback
`N/A`	Manoeuvring system not disengaging Possible Cause: Electrical disengaging failure or discharged body battery	Disengage the manoeuvring system manually using the special spanner supplied. Once the battery has been charged or the defect remedied, have the system checked by an authorised service agent.	Professional Intervention Required
`Operational Fault`	Continuous fault, such as a defective drive motor.	Apply the handbrake, turn off the remote, wait 2 seconds and turn it back on, or perform a system reset.	DIY Safe
`Operational Fault`	No radio connection established within 10 seconds of turning on the remote.	Ensure control unit is powered and repeat startup.	DIY Safe

Truma XT4

Technical Specifications

Master Troubleshooting & Diagnostics Matrix