PaulR93 Posted January 24, 2014 Share Posted January 24, 2014 A strange one here when I put the side windows up my headlights dim then go back to normal once I let go off the up switch. Is this normal? Quote Link to comment Share on other sites More sharing options...
Luke23 tdci Posted January 24, 2014 Share Posted January 24, 2014 Na not really normal. What happens when u use more power? Ie open windows and put the heated screen plus ac on at the same time. It could be your alternator isn't charging the battery enough. So if the battery isn't getting 14volts when it needs it, it will struggle to power things. Quote Link to comment Share on other sites More sharing options...
mick85 Posted January 26, 2014 Share Posted January 26, 2014 Check charging rate an what output is in amps for ur alternator an what size is ur battery is but it does happen if just sitting idling ur puttin an extra load on it if battery good an it's charging I wouldn be worried some people buy higher output alternators an bigger battery this can help Quote Link to comment Share on other sites More sharing options...
Gary Minty Jupe Posted January 26, 2014 Share Posted January 26, 2014 if your sitting there on idle i would say this is normal the power has to come from somewhere Quote Link to comment Share on other sites More sharing options...
btmaldon Posted January 26, 2014 Share Posted January 26, 2014 My wife's Clio does the same. You can hear the relay switch in which is taking power directly from the battery which makes the lights dim slightly and then you can hear the relay switch off when the window has reached and the lights brighten again. There is no issue with the battery or alternator. Quote Link to comment Share on other sites More sharing options...
Danwel Posted January 26, 2014 Share Posted January 26, 2014 Normal, my Almera does the same Quote Link to comment Share on other sites More sharing options...
PaulR93 Posted January 26, 2014 Author Share Posted January 26, 2014 Thanks guys for your feedback good to know everything is sound. Guess it's a bit strange to see haha Quote Link to comment Share on other sites More sharing options...
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