Negative Terminal Sparking

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Sep 3, 2010 | 11:50 AM

bustadons

Thread Starter

Neutral

Joined: Apr 2010

Posts: 4

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Negative Terminal Sparking

Anyone one else ever notice a lot of sparks when putting the negative terminal on a fully charged battery? I've only noticed this in mini's.

Jan 19, 2011 | 04:34 PM

Rayanmx

2nd Gear

Joined: Jul 2010

Posts: 147

Likes: 1

Reviving old thread.... Sorry...

Yesterday I noticed this also while trying to reset my MCS to see if my door locks "synchronize" (didn't work btw) but I noticed a few sparks while setting the negative terminal on the battery.

Any ideas?

TIA!

Jan 20, 2011 | 07:49 PM

Lewthor

1st Gear

Joined: Jan 2011

Posts: 12

Likes: 0

Most cars spark when re-attaching the negative cable. The more "behind-the-scenes" modules you have the more spark you get. They went from having no power to OH HEY POWER! Things like the DME, CAS, Lamp Module Battery monitor etc are all now awake and adding demand to the battery. Not a big deal.