Well there has been a very good development in the keys for automobiles. A new genere of keys have been brought to india by adopting new technologies for security in cars. From normal keys - remote keys-transponder/immobilizer keys- ultralite keys and many more. Source:http://www.sarkaritel.com/news_and_features/may2007/18marutipretheft.htm The iCATs works on the principle of multiplexed digital
communication. The transponder inbuilt into the car key
carries a unique electronic identification code. The
Electronic Control Unit (ECU) of the vehicle also carries a
corresponding secret code. The moment the key is inserted and
the ignition is switched “on” the code is communicated from
the key to vehicle’s ECU.
The engine starts only if the secret code on the key
transponder matches with the corresponding code on the ECU. In
case of a mismatch of the codes, the electronic circuitry
prevents the engine from starting. Under no circumstance the
engine will start with any locally fabricated key.
Maruti recommends that incase of a loss of the key, the
customer should visit the dealer workshop to electronically,
de-link the lost key.
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