Bimmerfest - BMW Forums - View Single Post - Low Key Fob Battery Question...
View Single Post
Old 05-08-2013, 07:47 AM
BaranE BaranE is offline
Officially Welcomed to the 'Fest
Location: Turkey
Join Date: Jun 2012
Posts: 355
Mein Auto: '10 740Li
Originally Posted by dbs600 View Post
Hmm; okay; thanks for your replies, gentlemen. So the older remotes charged inductively; very neat! I'm just wondering what's occurring when the remote doesn’t work, but placing next to the steering wheel brings it back to life; maybe these charge up as well - but only for a short amount of use thereafter?
Basic immobilizer system is passive. i.e. no energy is needed on transponders part to be read. So basically when you put it next to the sw you let the reader read the immobilizer chip on the fob passively.
Reply With Quote