Bmw e87 ballast keeps blowing

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Manufactured from 2004 to 2013

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Rian1991
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Bmw e87 ballast keeps blowing

Post by Rian1991 » Wed Jul 11, 2018 4:05 pm

Hi newbie here.. I've recently been having issues where water has been getting into my headlight and blowing the ballast. Noticed the the clip holding the cover on the back was missing so have got another one just hope this works. Was jw if anyone else have had this issue

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AndyBish135i
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Re: Bmw e87 ballast keeps blowing

Post by AndyBish135i » Wed Jul 11, 2018 11:09 pm

Yep common problem due to poor design...
Ballast sits in a plastic tray underneath headlight that is prone to water ingress in situations like yours (and mine when I first bought the car - ahem 🤫). This tray fills with moisture/water and then eventually shorts out the ballast.
If it’s not too badly blown then it may be saved by dousing it in electrical contact cleaner then thoroughly drying.
Best preventative measure is to drill some drain holes in the tray that the ballast sits in :wink:
HTH
Bish

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marco_polo
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Re: Bmw e87 ballast keeps blowing

Post by marco_polo » Thu Jul 12, 2018 9:06 am

Agreed, drain holes are the future.

Whilst you have the drill out, I'd also drill some drains in the bungs which live the bottom corners of each boot well (underneath each rear light cluster basically). Could save some expensive electrics in there too.
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Rian1991
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Re: Bmw e87 ballast keeps blowing

Post by Rian1991 » Thu Jul 12, 2018 9:35 pm

It's just annoying as I've never had an issue until now and have had the car couple of years now

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