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E85 / E86 Z4 (2003-2008)
E85 Z4 convertible and E86 Z4 coupe talk with our BMW gurus here.

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  #1  
Old 02-21-2012, 10:10 AM
Johnny Canada's Avatar
Johnny Canada Johnny Canada is offline
2003 530 5 speed
Location: Hamilton Ontario
 
Join Date: Jan 2007
Posts: 212
Mein Auto: 2003 530 5sp 53K Miles
Best way to jump start a dead battery? E85 Z4

E39 owner here. I've been asked to jump start my friends Z4.

Even new, the car has had a marginal battery. But after sitting in a cold garage for a month, the battery can't crank the engine. Cluster still illuminates.

I know the battery is in the trunk, but I've read that there are jump terminals under the hood.

I'm not sure if there is a negative terminal under the hood. If not, any ideas for best negative location ?

Thanks!
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  #2  
Old 02-21-2012, 10:41 AM
WestCDA WestCDA is offline
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Location: Calgary, AB
 
Join Date: Mar 2011
Posts: 168
Mein Auto: 2006 Z4 3.0si
Positive 'boost' terminal is on the firewall, offset a little to the right side. Negative terminal is on the right side of the engine compartment, near the middle of the fender. Both are high up and pretty easy to spot.
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  #3  
Old 02-21-2012, 10:41 AM
Wdupdog Wdupdog is offline
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Location: Spfld, IL
 
Join Date: Mar 2011
Posts: 45
Mein Auto: 08 si rdstr trpl blk
On my 08 si the positive terminal is up on the firewall center(under plastic cover) and the negative terminal is on the driver side fender well
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  #4  
Old 02-21-2012, 10:42 AM
Wdupdog Wdupdog is offline
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Mein Auto: 08 si rdstr trpl blk
West, you beat me by seconds!!
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  #5  
Old 02-21-2012, 10:45 AM
WestCDA WestCDA is offline
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Location: Calgary, AB
 
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Mein Auto: 2006 Z4 3.0si
It's my new turbo mouse 9000 ....
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  #6  
Old 02-21-2012, 10:48 AM
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Johnny Canada Johnny Canada is offline
2003 530 5 speed
Location: Hamilton Ontario
 
Join Date: Jan 2007
Posts: 212
Mein Auto: 2003 530 5sp 53K Miles
Thanks Guys!
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  #7  
Old 02-22-2012, 07:13 AM
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Pinecone Pinecone is offline
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Location: Maryland
 
Join Date: Apr 2002
Posts: 10,482
Mein Auto: M Roadster/M3
I have NOT had good luck jumping BMWs.

I have found that I need to either charge the battery or replace it.
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  #8  
Old 02-23-2012, 10:09 PM
rsutoratosu rsutoratosu is offline
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Location: Nassau
 
Join Date: May 2011
Posts: 81
Mein Auto: Z4
His car probably went into transport mode, check if the ac are blowing full blast or not.. he may need to go to the dealer to get that reset
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