The keys have a chip inside of them. But the chip you will receive is 48, the chip key must match the engine computer in order to start the car, so you have to ask local locksmith to do that. This ignition switch comes with 2 keys. The chip is initialized.
In order to solve this issue you can: Have the key to the lock you ordered copied by a local locksmith, but ask them to program the chip to match the one in your old key.
If you do not have the old key a locksmith can connect a small machine to the OBD2 port in the vehicle and program the car to work with the key that came with the lock.
Part Number: 35100-SDA-A71

Application:
For Honda CR-V 2002-2006
For Honda elements 2003-2011
For Honda Accord 2003-2007
Does not fit 03-05 Civic 2-Door,
Does not work with manual transmission.
Important Notice:
Model Year Chip Model
Accord 03-05 48
Accord 06-07 8E
Accord 08-11 46 Electronic chip
Accord 14-16 46 Electronic chip
CRV 05-06 48
CRV 07-11 46 Electronic chip
Fit 03-06 48
Fit 07-08 8E
Fit 09-11 46 Electronic chip
Odyssey 05-06 48
Odyssey 07-11 46 Electronic chip
Civic 03-05 48
Civic 06-07 46 Electronic chip
Civic 09-11 46 Electronic chip
color:Silver + black
Material:Metal

Package Contents:
1 x Ignition Switch Lock Cylinder
2 x Transponder Keys with 48 chip