Question 1

Manoeuvring system not working

Accepted Answer

Possible cause: Power supply issue or defective fuse in the battery cable. Check the power supply - the control unit's green LED should be lit. Replace any faulty fuse in the battery cable with a genuine spare part only. Cut the power for at least 20 seconds, then restore it. Contact an authorised service agent if the problem persists.

Question 2

The manoeuvring system isn't working, and the control unit's red LED is flashing

Accepted Answer

Possible cause: Control unit has overheated. Turn off the battery cut-off switch and take the key out. Let the control unit cool for at least 20 minutes before restarting the manoeuvring system. Have a specialist carry out repairs if it persists.

Question 3

The manoeuvring system isn't working, and both the red and green LEDs are flashing on the control unit

Accepted Answer

Possible cause: Overloading of the power electronics due to an overloaded caravan or excessive slope. Cut the power for at least 20 seconds, then restore it. Contact an authorised workshop if the problem remains.

Question 4

The manoeuvring system isn't responding to the remote control (or only intermittently), with symbols flashing on the remote

Accepted Answer

Possible cause: Remote control battery charge is too low or manoeuvring system battery is low. Check the remote control's batteries and replace if needed. Check the manoeuvring system's battery (indicated by the control unit's green LED flashing) and charge or replace it if needed.

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 adjust if needed, and check the tread and swap the tyres if needed. With the manoeuvring system disengaged, confirm the gap between the tyres and drive roller is exactly 20mm - if adjustment's needed, have a specialist carry it out.

Question 6

Manoeuvring system not disengaging

Accepted Answer

Possible cause: Electrical disengaging failure or discharged body battery. Disengage the manoeuvring system by hand using the special spanner provided. Once the battery's charged or the fault fixed, have an authorised service agent check the system over.

Question 7

Error Red continuous-error symbol lights up steadily, with a beep: Continuous fault, such as a defective drive motor.

Accepted Answer

Apply the parking brake. Then check the remote control's batteries, that it's paired with the control unit, that the 13-pin plug or adapter is properly in the safety socket, and that the caravan battery is charged and its fuse is intact. If none of that fixes it, contact Truma Service.

Question 8

Error Green radio symbol flashes rapidly with beeps, then the remote switches off: No radio connection within 10 seconds of switching on the remote control.

Accepted Answer

Make sure the control unit is switched on and the 13-pin plug or adapter is pushed into the safety socket, then turn the remote control on again.

Error Code / Indicator	Symptom / Meaning	Possible Cause	Step-by-Step DIY Fix	Suggested Actions
`N/A`	Manoeuvring system not working	Power supply issue or defective fuse in the battery cable	Check the power supply - the control unit's green LED should be lit. Replace any faulty fuse in the battery cable with a genuine spare part only. Cut the power for at least 20 seconds, then restore it. Contact an authorised service agent if the problem persists.	DIY Check / Tech Fallback
`N/A`	The manoeuvring system isn't working, and the control unit's red LED is flashing	Control unit has overheated	Turn off the battery cut-off switch and take the key out. Let the control unit cool for at least 20 minutes before restarting the manoeuvring system. Have a specialist carry out repairs if it persists.	DIY Check / Tech Fallback
`N/A`	The manoeuvring system isn't working, and both the red and green LEDs are flashing on the control unit	Overloading of the power electronics due to an overloaded caravan or excessive slope	Cut the power for at least 20 seconds, then restore it. Contact an authorised workshop if the problem remains.	DIY Check / Tech Fallback
`N/A`	The manoeuvring system isn't responding to the remote control (or only intermittently), with symbols flashing on the remote	Remote control battery charge is too low or manoeuvring system battery is low	Check the remote control's batteries and replace if needed. Check the manoeuvring system's battery (indicated by the control unit's green LED flashing) and charge or replace it if needed.	DIY Safe
`N/A`	Drive roller sliding off tyre	Incorrect tyre pressure, worn tyre tread, or incorrect distance between tyres and drive roller	Check the tyre pressure and adjust if needed, and check the tread and swap the tyres if needed. With the manoeuvring system disengaged, confirm the gap between the tyres and drive roller is exactly 20mm - if adjustment's needed, have a specialist carry it out.	DIY Check / Tech Fallback
`N/A`	Manoeuvring system not disengaging	Electrical disengaging failure or discharged body battery	Disengage the manoeuvring system by hand using the special spanner provided. Once the battery's charged or the fault fixed, have an authorised service agent check the system over.	DIY Check / Tech Fallback
`Red continuous-error symbol lights up steadily, with a beep`	Continuous fault, such as a defective drive motor.	—	Apply the parking brake. Then check the remote control's batteries, that it's paired with the control unit, that the 13-pin plug or adapter is properly in the safety socket, and that the caravan battery is charged and its fuse is intact. If none of that fixes it, contact Truma Service.	DIY Check / Tech Fallback
`Green radio symbol flashes rapidly with beeps, then the remote switches off`	No radio connection within 10 seconds of switching on the remote control.	—	Make sure the control unit is switched on and the 13-pin plug or adapter is pushed into the safety socket, then turn the remote control on again.	DIY Safe

Truma XT4

Technical Specifications

Master Troubleshooting & Diagnostics Matrix