According to the manual my 2005 RSX's keys have a key code.
Does this mean there are some electronics or magnetics inside
the key? Replacing one of the keys for my wife's Lexus was a
pain in the neck. I thought those simple looking RSX keys meant
a trip to Sears for a spare. Not true?
I bought the car used and got only a piece of paper with what looks
like the radio code. Nothing specific about keys.
it has a passive RFID chip inside,that gets scanned by a reader near the
ignition switch,that matches a code stored inside the fuel injection
computer(ECU).it's a hopping code;not the same each time.
That way,you [and thieves!] cannot start the engine without the right
key,or by replacing the entire ECU.
The RFID chip has an antenna and is energized by the scanner's
interrogating RF field[your key needs no batteries],then transmits it's
code to the scanner.That gets compared to what's in the ECU. A match allows
your car to start.
It beats having your RSX stolen like my Integra GS-R was June 29th,despite
an alarm with starter disable.
the dealer can use your auto's VIN to get the correct key code.
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