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Electronic vehicle immobilizer
The key to security
Yo ur B M W is e q uip p e d with a p assiv e
a nti– th e ft s yst e m . T his ele ctro nic i m m o -
biliz atio n s yst e m is d esig n e d t o r e d u c e
th e sus c e ptibility of th e v e hicl e to th eft
by m aking it im p o ssibl e to st art th e
e ngin e usin g a ny m e a ns oth er th a n th e
s p e cial k e ys furnis h e d w ith th e v e hicl e .
Yo ur B M W c e nter c an c an c e l th e el e c-
tro nic syst e m a uth ori z atio n for in di-
vid u al k e y s (in th e e v e nt of loss, f or
insta n c e). A d e a ctiv ate d k e y c a n no
lo n g er b e us e d to start th e e n gin e.
46 c d e 0 6 0
How the electronics work
At th e h e art of this syst e m is a n ele c -
tro nic c hip th at is int e gra t e d into th e
k e y. T h e lo c k m e c h a nis m its elf is a ctu -
ally a d u al-fu n ctio n d e vic e , s ervin g a s a
c o m m unic atio ns int erfa c e d e sig n e d to
allo w th e v e hicle's el e ctro nic s syst e m
to m aintain a c o ntinu ou s stre a m of v ari-
a ble, v e hicl e - s p e cific sig n als with th e
ele ctro nic circ uitry in th e k e y. Th e
sy ste m w ill n ot rele as e th e ig nition, fu el
inje c tio n a n d st art er u nle ss it re c o g -
niz e s a n " a uth oriz e d " k e y.
F orc e a p pli e d to th e k e y c a n
d a m a g e th e int e gra t e d e l e ctro nic
circ uitry. A d a m a g e d k e y c a n n o lo n g er
b e us e d to start th e e n gin e. <
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