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1999 SL500
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Discussion Starter · #1 ·
My 1999 sl500 recently when I turn my headlights on, the headlight washer fluid comes on and stays on, so at night I am driving without headlights. Does anyone know why this is happening and how to fix it? Thanks
 

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1993 SL500, 1998 SL500 Pano Top, 2005 ML270Cdi.
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947 Posts
It may have something to do with the headlight washer/wiper system, these will only activate when the headlights are on.
I'll check a wiring diagram when I'm back home and see if there is relay or joint that could cause this effect.
 

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Registered
1999 SL500
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7 Posts
Discussion Starter · #3 ·
It may have something to do with the headlight washer/wiper system, these will only activate when the headlights are on.
I'll check a wiring diagram when I'm back home and see if there is relay or joint that could cause this effect.
Thank you. It just started two nights ago. Any help would be appreciated.
 

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1993 SL500, 1998 SL500 Pano Top, 2005 ML270Cdi.
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947 Posts
Just to be sure, does your '99 SL500 have a headlight wiper and wash system? I think on some models that option was deleted.
 

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Administrator
1993 SL500, 1998 SL500 Pano Top, 2005 ML270Cdi.
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947 Posts
Yes it does. Sorry for my delayed response.
OK, are they working properly? To test them you have switch the headlights on and operate the windscreen washers. You'll need someone to look to see if the wipers are working and that washer fluid is being sprayed onto the headlight glasses.
If it isn't working then the original problem is more likely to be in this area is in this area.
 
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