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Old 12-01-2012, 03:28 PM
JNMNL52 JNMNL52 is offline
Officially Welcomed to the 'Fest
Location: Woodbridge, Virginia
Join Date: Aug 2012
Posts: 188
Mein Auto: 2006 X-5 / 2014 X-5
Originally Posted by QSilver7 View Post
If you've UNLOCKED your instrument can monitor the output of your alternator/charging system when the engine is running if you open TEST 9. When the engine is NOT running and the ignition is in position 1 or 2...then it will reveal the battery's voltage.

A alternator in good working condition should be putting out 12.8volt to around 13.8 volts. If it is spiking consistently above 14 volts (that's too high). Have you checked your belts? A slipping belt or a belt that is cracked and about to split/rip...could also have caused your momentary red battery well as one of the pulleys/belt tensioners.

Here's the instructions on how to UNLOCK the OBC (instrument cluster) so you can access the 21 TESTs that are available:

Click this link for a description of all 21 TESTs:

Thanks for the procedures. I will give it a try.
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