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Battery and charging system

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Pro3ltr
Newbie
Newbie
Posts: 45
Joined: Thu Feb 02, 2017 11:25 pm

Battery and charging system

Post by Pro3ltr » Fri Apr 20, 2018 6:04 pm

Any advise....?
Have the car some beans up a hill today... first time for a while... Battery light came on. Stayed on for next 10 miles. Got home switched off the car.
Left it for 10 minutes.. went to start it and the light is off...
Checked the battery... 11.5v. Checked it with engine running 11.5v.
So it's now not charging... I know that... but wouldn't the battery light still be on???
Would it be voltage regulator or complete alternator... how do you tell...

Thanks
Z3... 3lt manual. Heated memory leather. Auto lights wipers. Xenons. Cruise. 230bhp.
Austin Mini automatic.... 998... 35bhp. Manual seats wipers lights...
Both as much Fun as each other!!!!
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ph001
Lifer
Lifer
Posts: 3870
Joined: Mon Oct 31, 2016 5:53 pm
Location: N. Yorkshire.

Battery and charging system

Post by ph001 » Fri Apr 20, 2018 6:13 pm

It’s probably the alternator but a diagnostic from an auto-electrical shop will confirm for sure. I assume the belt is not in pieces!
2007 E85 Z4 3.0Si manual :driving:
19" CSL's | Eibach Springs | Aeroskirts | Z4M front bumper | Clear brake light | ZHP | RCH+| Stubby

2004 E46 M3 coupe manual - gone but not forgotten.

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Pro3ltr
Newbie
Newbie
Posts: 45
Joined: Thu Feb 02, 2017 11:25 pm

Battery and charging system

Post by Pro3ltr » Fri Apr 20, 2018 6:37 pm

Nope... belt is all good... bearings good....
Just don't get why the charge light is out?
Z3... 3lt manual. Heated memory leather. Auto lights wipers. Xenons. Cruise. 230bhp.
Austin Mini automatic.... 998... 35bhp. Manual seats wipers lights...
Both as much Fun as each other!!!!
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