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Megane Electrical Issue

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bigalan Scotland Posts: 1,047	Megane Electrical Issue bigalan @bigalan
	Jan 7, 2009 11:11:37 GMT Select Post Deselect Post Link to Post Back to Top
	Not sure if this is the right board for this but here goes anyway. Got a 98 Renault Megane just before christmas. It was a bit slow turning over and after a week or so it wouldn't start at all - flat battery. Tried bump starting down a hill but got nowhere. Jump started it from my other Megane and it ran fine for the rest of the day. Same problem next day. Battery dead. Wouldn't bump. Jumped fine. Third day same issue but this time when I tried to jump it the cables (cheap curse word) got really hot and started to melt at the handles! Waited a while, tried again and got it started. BUT now the wipers, indicators, hazards and heated rear screen don't work!! Took it to kwik fit and got a new battery but still no wipers etc. All the fuses appear to be intact. Could this have been caused by the indicator, wipers and rear screen being left on while jump starting? Any suggestions on how to sort it? I am officially clueless!
	--------------------------- 89 Masterace Surf 03 Astra 03 V40 Sport 09 E90 M Sport

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BenzBoy Probably posted too much Posts: 17,940 Club RR Member Number: 7	Megane Electrical Issue BenzBoy @benzboy Club Retro Rides Member 7
	Jan 7, 2009 11:28:08 GMT Select Post Deselect Post Link to Post Back to Top
	Until you said about the other problems, I'd have said that there was a short somewhere that was training the battery overnight. Where abouts is the relay box on these, and is it in good condition? Could have a fault in that area which has stopped the indicators etc from working maybe? Although I don't know whether it is related to the battery problem or not. I'm rubbish with electrickery.
	1975 Mercedes-Benz 200 1989 Nissan Patrol OM606 conversion 2015 Volkswagen Caddy Maxi

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bigalan Scotland Posts: 1,047	Megane Electrical Issue bigalan @bigalan
	Jan 7, 2009 11:34:51 GMT Select Post Deselect Post Link to Post Back to Top
	Theres a relay box under the bonnet. Everything inside looks fine - although I wouldn't know what to look for! Has been staring fine on new battery - but don't want it geting destroyed by whatever the problem is!
	--------------------------- 89 Masterace Surf 03 Astra 03 V40 Sport 09 E90 M Sport

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Rhodrich Part of things Posts: 343	Megane Electrical Issue Rhodrich @rhodrich
	Jan 7, 2009 11:38:39 GMT Select Post Deselect Post Link to Post Back to Top
	Does it have the silly French style battery connectors? I had a similar problem on my Peugeot 205, and it turned out to be those (after taking advice from this board). Replaced terminals with normal style ones - problem solved.....
	~~1951 Split Window Beetle~~ - SOLD! 1965 Mercedes 230SL 1966 VW Beetle 1968 Mercedes 280SE ~~1972 VW 412LE Variant~~ - SOLD! err.... 2004 Toyota Corolla

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bigalan Scotland Posts: 1,047	Megane Electrical Issue bigalan @bigalan
	Jan 7, 2009 11:42:49 GMT Select Post Deselect Post Link to Post Back to Top
	Think they're normal - don't look any different to any other connectors to me.
	--------------------------- 89 Masterace Surf 03 Astra 03 V40 Sport 09 E90 M Sport

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mrj Posted a lot Posts: 1,662	Megane Electrical Issue mrj @mrj
	Jan 7, 2009 12:16:09 GMT Select Post Deselect Post Link to Post Back to Top
	i think they have an ECU for all that stuff that is not working now, probably you have toasted it ?
	- 1971 VW 1600 TL Fastback - 1978 Passat GLS Variant - 1980 Audi 100 5E - 1981 VW aircooled panel van (sold) - 1983 VW Jetta Mk.I - 1984 VW Polo Coupé - 1984 VW Passat hatchback - 1987 VW Passat Variant - 1987 VW Passat hatchback - 1988 VW T25

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bigalan Scotland Posts: 1,047	Megane Electrical Issue bigalan @bigalan
	Jan 7, 2009 12:47:13 GMT Select Post Deselect Post Link to Post Back to Top
	That sounds bad. And expensive!
	--------------------------- 89 Masterace Surf 03 Astra 03 V40 Sport 09 E90 M Sport

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danblez Part of things Posts: 459	Megane Electrical Issue danblez @danblez
	Jan 7, 2009 12:54:33 GMT Select Post Deselect Post Link to Post Back to Top
	Long shot but I would be tempted to disconnect the battry again for 20 minutes and see if it resets any of the french electrickery.


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Darrel Posted a lot Posts: 1,167	Megane Electrical Issue Darrel @boycie
	Jan 7, 2009 13:25:59 GMT Select Post Deselect Post Link to Post Back to Top
	Heated rear screen and wipers are seperate form the ecu as the loading is too high on them. It sounds like youve had duff battery which is now resolved which is good, but if I remember right these have a seperate fusebox in the engine compartment which feeds the relay box. This has its own cable that connects to the battery terminal and by the sounds of it they have not connected it when changing the battery?


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