View Single Post
  #9  
Old 10-25-2012, 07:28 AM
YinD YinD is offline
Officially Welcomed to the 'Fest
Location: Denton Texas
 
Join Date: Apr 2012
Posts: 162
Mein Auto: 2003 540iA M-Sport
I did perform an alternator load test. I did not think to turn on the wipers, high beams, or full fan
I turned on:
a/c to auto (the fan went to about 1/2 speed)
rear window defroster
front driver seat heater max heat
headlights and fog lights
The readout started at 13.8 V and with each system it went down to 13.4 V

Reading some other threads on alternators, it sounds like maybe the brushes in the alternator are getting old. Records show that the alternator was changed at 78,681 at a BMW dealership. Car is at 135,000 now.

Am I in the right direction?
__________________

2003 BMW 540i A M-Sport with factory Navigation and CD changer; winter package
1997 Toyota Landcruiser 40th anniversary edition

~split personality~
Reply With Quote