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      06-26-2015, 10:52 AM   #8
BMWrules7
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Drives: 2015, 740 LdX, Alpine White
Join Date: Mar 2011
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Quote:
Originally Posted by OEMonsterz
Check key fob batteries
Yes. The car has multiple near field antennas that allow the system to distinguish if your fob is inside the vehicle or outside th vehicle.


If the fob battery is weak, the distance between the fob and the closets NF antenna could be closer when actuating the rear door handle lock and too distant for the fob's available power when actuating the front door lock.

However, this possibility may be rebutted by the fact that the key fob's battery is supervised. Thus, the system should convey the low battery condition of the fob.
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