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E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

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  #1  
Old 03-12-2014, 04:04 PM
Margray Margray is offline
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Location: Myrtle Beach
 
Join Date: Mar 2014
Posts: 2
Mein Auto: Z4
Battery for Z4 - 2006

I love my Z4. It is as charming as can be. I think it needs a new battery as it had a slow start ( a bit after sitting a short while.)
Do I head to the BMW for my battery or is there a compatible?
Do the electronics work fine after someone installs on their own or is there a computer reset? Thanks!
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  #2  
Old 03-12-2014, 04:15 PM
Margray Margray is offline
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Location: Myrtle Beach
 
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Mein Auto: Z4
Ok I noticed in search someone bought a Interstate H6 MT-48 so that just might be an option...
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  #3  
Old 03-13-2014, 06:45 AM
chickdr chickdr is offline
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Location: Atlanta, GA
 
Join Date: Mar 2009
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Mein Auto: '06 M Roadster Imola/Blk
There are TONS of threads about this. You do not have to buy from the dealer and there is no programing needed for the Z4(only the auto up windows need to be reset.)
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Old 03-13-2014, 06:45 AM
chickdr chickdr is offline
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Mein Auto: '06 M Roadster Imola/Blk
****

Last edited by chickdr; 03-13-2014 at 06:47 AM.
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  #5  
Old 04-20-2014, 06:56 AM
p598738 p598738 is offline
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Location: Massachusetts Florida
 
Join Date: Sep 2012
Posts: 11
Mein Auto: Massachusetts Florida
Electronics after storage

I'm leaving my Z4 in storage for several months. Should I disconnect the battery ? Would the electronics require a reset when I reconnect ? Should I use a trickle charger or a float charger to avoid problems ? Thanks.
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  #6  
Old 04-21-2014, 06:07 AM
accent accent is offline
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Location: Canada
 
Join Date: Apr 2013
Posts: 3
Mein Auto: Z4 2.5
Hi
I just took my 2003 Z4 out of storage. I stored the battery in my basement.
After five months of storage, I reinstalled the battery, and everything worked. Don't ask me how, but even the radio station buttons worked.
Thanks to Shipkiller, because he did post that nothing would be 'lost' when reinstalling the battery.
I believe that the younger Z4's can have issues.
accent
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  #7  
Old 04-21-2014, 03:05 PM
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shipkiller shipkiller is offline
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Location: Virginia Beach, VA
 
Join Date: Nov 2007
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Mein Auto: Me
I had to disconnect my battery on the ///M this weekend to install a trailer light controller. The only thing that needed to be reset was the time. OK, that took 20 seconds to fix.

Any time I am not going to drive my cars (a three weeks or more) I put the the car on a good quality trickle/float charger. Removing the battery is also an option but it can be a pain.....

I do not know what the 'correct' answer is to this question. I do know what works.

The WRONG answer is to just let the car sit with the battery attached and have it discharge. The car does NOT like low voltage..... This causes all kinds of issues with the car, including doing long term damage to your battery.
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