Kuga Engine Problems

I had something similar happen with my Kuga – although it was a petrol version. The engine cutting out and the rough running sounds familiar. Did you check all the fuses? There's often a separate fuse specifically for the ignition circuit, and it might not be obviously blown – sometimes it's hard to see. What happens when it doesn't start? Does it crank at all, or is it just totally dead? If it's totally dead, it could point more towards the ignition switch itself. The ignition switch is an electrical part that provides power to other circuits, such as the starter motor circuit.

Yeah, it's completely dead sometimes, no cranking at all! Other times, it cranks but doesn't fire up. I checked all the fuses in the main box under the hood, but I didn't see anything labeled specifically for the 'ignition circuit'. Is there another fuse box somewhere that I'm missing? Where do I find the ignition switch fuse? And is it hard to replace the ignition switch by myself?

Okay, the 'completely dead' symptom when starting definitely points towards the ignition switch being a possible culprit. Regarding the fuse, it depends on the specific model and trim level, but some Kugas have a second fuse box inside the car, often near the glove compartment or under the dashboard. Check your owner's manual; it should have a diagram showing all the fuse locations. To be honest, fiddling with the ignition switch itself can be tricky because the steering lock mechanism is involved. It might be better to take it to a workshop to be sure. A mechanic will have the proper tools and diagnostic equipment to pinpoint the problem and replace the switch correctly.

Thanks a lot for the advice! I checked the manual and found the second fuse box you mentioned. Turns out, there was a blown fuse for the ignition circuit. Replaced it, and the car started right up! Cost me 52€ for the fuse and some new tools. You saved me a lot of hassle and expense!