Renault Trucks T High recall: C0500 – IRMU Replace
- What's wrong
- The AC inlet socket and the power outlet for body builder equipment might be incorrectly energized. It happens because these two features are not fully electrically isolated from each other. Therefore in vehicles where AC or DC power outlets are installed there might be voltage…
- What to do
- Contact a Renault Trucks dealer to book the free repair. Inspection and replacement of the Insulation Resistance Monitoring (IRM) Junction box.
What’s wrong
The AC inlet socket and the power outlet for body builder equipment might be incorrectly energized. It happens because these two features are not fully electrically isolated from each other. Therefore in vehicles where AC or DC power outlets are installed there might be voltage with low leakage current inadvertently present inside the AC inlet socket when the power outlet is active. Also when AC charging there might be a voltage with low leakage current inadvertently present on the power outlet .
The fix
Inspection and replacement of the Insulation Resistance Monitoring (IRM) Junction box.
Vehicles affected
| Model | Built from | Built to | Vehicles |
|---|---|---|---|
| T High | 23 Oct 2023 | 18 Nov 2024 | 10 |
How to check your vehicle
Use the official DVSA checker with your registration number to see if your exact vehicle is included. If it is, the manufacturer should have written to the registered keeper. The repair is free, even if you bought the vehicle second-hand.
Updated 9 January 2026. This page summarises an official notice. Details can change – always follow the official notice.