The Mégane II Owners' Club

I have a 2004 Renault megane when I tend to put my foot down electrical fault comes up on the dash and when I switch it off the starter won't work. If I disconnect the battery terminal and put it back it will work fine until electrical fault re appears when I go out in it again I've had a diagnostic on it 3 times and won't read no faults it's really strange because the car is running really nice. Has anyone ever had this problem?

Check here.

It's a good video, just a small correction. Use a clear dielectric silicone grease everywhere. It insulates, but the contacts cut straight through it. Don't use white grease, as it contains Teflon powder, which may prevent the contact.

Please also check the headlight access hatch cover on the front left wheel arch liner. If it's missing, then it's the fuse box being wet, as in the video.

It also can be a CAN bus problem somewhere. Intermittent faults are difficult to detect.