Menu
Home
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Reply to thread
Click here to become an Official Member of BMW Club Malaysia
Download Form
Home
Forums
BMW Tech and Performance
Engine Tech
Need Advice... Battery flat or Alternator bad.
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="jaleeks23" data-source="post: 386447" data-attributes="member: 8431"><p>Can use voltmeter put it at the battery to measure the voltage. At idle, meter should read at least 14V. Switch on all the lights and aircon and open the doors and boot so all the interior lights also on. Then measure again, if it drops, then time to service alternator. If you've tested voltage while car is idling with engine on and supply is ok, switch off engine and test the battery's voltage. After 30mins, test the battery again, if the voltage drops, most probably the battery's fault.</p></blockquote><p></p>
[QUOTE="jaleeks23, post: 386447, member: 8431"] Can use voltmeter put it at the battery to measure the voltage. At idle, meter should read at least 14V. Switch on all the lights and aircon and open the doors and boot so all the interior lights also on. Then measure again, if it drops, then time to service alternator. If you've tested voltage while car is idling with engine on and supply is ok, switch off engine and test the battery's voltage. After 30mins, test the battery again, if the voltage drops, most probably the battery's fault. [/QUOTE]
Verification
Post reply
Home
Forums
BMW Tech and Performance
Engine Tech
Need Advice... Battery flat or Alternator bad.
Top
Bottom
