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why do cars no longer need a code for the immobiliser?.

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joko | 00:38 Mon 21st Dec 2009 | Motoring
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my old peugeot would not start unless you typed in a code...so even if the key was used the car could not be stolen, as only know the code.

why has my more modern car, appaently got an immobiliser built into the key??
so anyone can start the car if they have key...

surely the old way was safer...if i dropped my key or someone stole it, there is nothign stopping them taking the car

thanks
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Your right, that is safer, it would stop the retards breaking into houses to get the key !
The Peugeot/Citroen keypad immobiliser circa mid 1990s could be a right pain. When the vehicles were handed over to the first owner they had a preset code number that the owner could change whenever they wanted. The system is very secure because the only person having access to the new number is the owner; however, this caused problems if the number was lost or forgotten because the dealers or manufacturers have no record of the new number and no way to retrieve the code. The only way around this problem (before the relatively recent availability of cracking software) was to purchase and install a new Keypad & E.C.U. (= many hundreds of pounds). Owners also tended not to change the code often enough to prevent individual buttons from failing through overuse. Within a few years Peugeot/Citroen phased in the more widespread transponder key immobiliser system.
Coz in reality a considerable proportion of users couldn't remember the code when they needed it.

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