13/08/2026
🚐 Ford Transit Custom – Electrical Diagnosis & Repair ⚡️
We had this Ford Transit Custom in after failing its MOT due to the daytime running lights (DRLs) and sidelights being inoperative ❌💡
What initially looked like it could be a straightforward lighting fault turned into a much more involved electrical diagnosis.
After carrying out extensive testing of the lighting circuits, power supplies, wiring and related components, we narrowed the fault down to the vehicle’s Body Control Module (BCM) causing the issue. 🔧🔍
With the fault confirmed, we fitted a replacement BCM and coded/programmed it to the vehicle. Once completed, the DRLs and sidelights were fully operational again ✅💡
A great example of why proper electrical diagnosis is important — finding the actual cause of the problem rather than simply throwing parts at it.
Another fault diagnosed, repaired and ready for its MOT retest at OPI Mechanical ✅
🔧 Car & Small Commercial
⚡ Electrical Fault Finding & Diagnostics
💻 Module Coding & Programming
🚐 Servicing, Repairs & MOT Repairs
OPI Mechanical – keeping you on the road.