Electrical fault and car won't start

Discussions around the Mégane 225.

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Martinj106
Posts: 1
Joined: Thu Nov 10, 2016 5:03 pm

Electrical fault and car won't start

Postby Martinj106 » Thu Nov 10, 2016 5:25 pm

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 :banghead it's really strange because the car is running really nice. Has anyone ever had this problem?

kallek
Posts: 1
Joined: Tue Nov 15, 2016 12:08 pm
Currently Drives:: Megane II 1.6 82 KW 2008

Re: Electrical fault and car won't start

Postby kallek » Tue Nov 15, 2016 12:25 pm

Check here.

AlexB
Driving Legend
Posts: 4312
Joined: Tue Mar 22, 2005 8:17 pm
Currently Drives:: Renaultsport R.S.250 Cup

Re: Electrical fault and car won't start

Postby AlexB » Wed Nov 16, 2016 10:54 pm

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.
AlexB
(no, a different AlexB)


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