Battery Dead?

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LookinFoolish
Joined: Sun 31 Jul, 2011 19:36
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Battery Dead?

Post by LookinFoolish » Mon 26 Sep, 2011 11:38

Spent my first week at Uni, only to come back, try and start up my Z3, only to find out it didn't.....

It made a juddery sound (sorry for bad description) and wouldn't start the engine. It did 'try' to turn on, but just wouldn't.


Can i charge the battery whilst it's still in the car? Because when i try to take it out, the alarm goes off because it thinks it's discharging/low voltage and i cant seem to stop the alarm.
Last edited by LookinFoolish on Mon 26 Sep, 2011 14:03, edited 1 time in total.
1997 BMW Z3 1.9l

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LookinFoolish
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  Z3 roadster 1.9
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Post by LookinFoolish » Mon 26 Sep, 2011 14:03

What i'm asking is:

A) is it safe to charge the battery whilst it's in the car, or no? because it could damage the altenator?
B) How do i take the battery out without the alarm going off?
1997 BMW Z3 1.9l

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hornel Z3M
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Post by hornel Z3M » Mon 26 Sep, 2011 20:38

Right listen ... You can charge the battery on the car using the cigarette lighter but the charger must be the trickle charge type you can get on e-bay. to take the battery off lift the bonnet and you should have a round key (depending on the Year ) and find the siren, usually to the right at the rear of the engine bay,and turn the siren off. Easy :|

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LookinFoolish
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Post by LookinFoolish » Tue 27 Sep, 2011 09:09

ok thanks ive not got tool to charge from cigarette lighter but ive took battery out :) trickle charge time!
1997 BMW Z3 1.9l

Bill-
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Post by Bill- » Tue 27 Sep, 2011 15:49

if you look under the bonnet there is a small box with a red plus sign on it lift the box there is a metal rod. attatch the positive, red terminal (+) to it and the negative (-) black terminal to a nut on the body this charges the battery without removal

:)

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RemarkLima
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Post by RemarkLima » Tue 27 Sep, 2011 16:33

Or just charge the battery in the boot with a usual battery charger... Or am I missing something?
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Bill-
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Post by Bill- » Tue 27 Sep, 2011 17:04

RemarkLima wrote:Or just charge the battery in the boot with a usual battery charger... Or am I missing something?
Bollokos (from the greek) why didnt I think of that :D

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RemarkLima
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Post by RemarkLima » Tue 27 Sep, 2011 18:19

Bill- wrote:
RemarkLima wrote:Or just charge the battery in the boot with a usual battery charger... Or am I missing something?
Bollokos (from the greek) why didnt I think of that :D
LOL! I was wondering if there's some electrical gremlin that would cause it to die, blow fuese etc..?
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Frank.A
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Post by Frank.A » Tue 27 Sep, 2011 19:18

If you have a load of gear in the boot it is easier to use the jump start connectors under the bonnet.I always use these with any charger.
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2000 Topaz 2.8 Individual.

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T48 TRE
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Post by T48 TRE » Tue 27 Sep, 2011 19:59

I have to agree with Frank.A i too use the + and - posts under the bonnet to charge the battery, which I do with a trickle charger. I use the type that can be left on all the time, which would be handy for you, as you could leave it on when you go to Uni. I have the type that charges up initially, then monitors the battery charge, and tops up as required.
Regards
Albert.
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hornel Z3M
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Post by hornel Z3M » Tue 27 Sep, 2011 21:19

BMW Manual says----- Always charge the battery in the car using the jump-start point and groung in THE ENGINE compartment and not the boot :nerd:

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