ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Roadster and Coupe > General BMW Z4 Forum
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      11-07-2019, 03:08 PM   #1
Oldmcst
Private First Class
United_States
21
Rep
108
Posts

Drives: 2004 BMW Z4 3.0I
Join Date: Jul 2019
Location: Delphi, IN

iTrader: (0)

Garage List
Battery terminal under hood????

In an old post re: "WINTERIZE", I saw one response to the battery removal or Battery Tender question stating that there were battery terminals under the hood in an M car so perhaps there were under the hood in a 3.0 as well. If so where??? Also in the same post, there was a statement that the truck light would go off after 5 minutes. I haven't found that to be the case in my '04. Any comments are appreciated.
Appreciate 0
      11-07-2019, 04:29 PM   #2
unluky
Major
unluky's Avatar
7465
Rep
1,246
Posts

Drives: 04 z4 3.0 Sport & 15 X5 35i XD
Join Date: Aug 2013
Location: Sedalia, MO

iTrader: (0)

Garage List
If you have a left hand drive car - the terminal is right in front of the steering wheel under the hood. Should have a red plastic cover over it if it has not been lost. The neg one is by the drivers side wheel fender and not color coded, but if you are looking for it you will find it. If you lean over to take the red cap off - you are leaning over the neg one - lol.

Edit - very similar to this - https://www.bimmerfest.com/forums/sh...d.php?t=639128
__________________
2015 X5 XDrive 35i - 2004 Z4 3.0 Sport
Appreciate 0
      11-07-2019, 04:31 PM   #3
wdb
dances with roads
wdb's Avatar
4673
Rep
4,090
Posts

Drives: '07 E86, '02 996, '95 Seven
Join Date: Jul 2015
Location: the perimeter

iTrader: (4)

The cover on mine is black but otherwise what unluky said.
Appreciate 0
      11-07-2019, 04:32 PM   #4
unluky
Major
unluky's Avatar
7465
Rep
1,246
Posts

Drives: 04 z4 3.0 Sport & 15 X5 35i XD
Join Date: Aug 2013
Location: Sedalia, MO

iTrader: (0)

Garage List
Quote:
Originally Posted by wdb View Post
The cover on mine is black but otherwise what unluky said.

You might be right - my X5 is red, but the Z4 might be black.

I just hook the tender directly to the battery and close the trunk on the cord. Works fine as well if you don't forget and drive off with it hooked up....lol
__________________
2015 X5 XDrive 35i - 2004 Z4 3.0 Sport
Appreciate 0
      11-07-2019, 05:28 PM   #5
Oldmcst
Private First Class
United_States
21
Rep
108
Posts

Drives: 2004 BMW Z4 3.0I
Join Date: Jul 2019
Location: Delphi, IN

iTrader: (0)

Garage List
Quote:
Originally Posted by unluky View Post
You might be right - my X5 is red, but the Z4 might be black.

I just hook the tender directly to the battery and close the trunk on the cord. Works fine as well if you don't forget and drive off with it hooked up....lol
Thanks to all. It kinda blows my mind that there would be terminals to a battery located in the trunk that are under hood as well. My 1st Miata had the battery in the trunk, but no under hood terminals, (I think).

Any way the tender is now hooked to the battery in the trunk AND the trunk light DID go off!!!

Again, thanks to all!!
Appreciate 1
unluky7465.00
      11-07-2019, 05:30 PM   #6
Huz-Z
Brigadier General
Huz-Z's Avatar
Canada
843
Rep
4,051
Posts

Drives: Z4 3.0si, 328 XDrive, X5 35i
Join Date: Aug 2009
Location: Canada

iTrader: (0)

You can also connect directly to the battery terminals in the trunk and close the lid after connecting.

Edit - You must have made your post while I was typing mine lol!!!

Last edited by Huz-Z; 11-07-2019 at 05:39 PM..
Appreciate 0
      11-07-2019, 11:09 PM   #7
SD ///M4
///Multiple
SD ///M4's Avatar
United_States
2992
Rep
4,243
Posts

Drives: M4 Coupe | M3 | Z4M Roadster
Join Date: Jan 2011
Location: San Diego, CA

iTrader: (1)

Garage List
Quote:
Originally Posted by Oldmcst View Post
It kinda blows my mind that there would be terminals to a battery located in the trunk that are under hood as well.
All BMWs, not just Ms, have had their batteries in the trunk for decades to improve weight distribution and allow them to achieve the legendary 50/50 front/rear balance. The reason that there are terminals under the hood is to make it safer if the car needs to be jumped and more convenient.

Older lead acid batteries emitted dangerous hydrogen sulfide gas which is toxic and flammable. A spark from connecting jumper cables incorrectly could ignite the gas causing an explosion. This is why you always connect the red (positive) leads first and then connect the black leads last, preferable to a metal ground in the car, not directly to the battery. Using the front battery terminals enforces this and eliminates this danger, although with modern batteries this is less of a concern.
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18
The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12

Appreciate 2
wdb4673.00
Reborn_292.00
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:29 PM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST