The keys have a chip inside. The included chip is 48. The chip key must match the engine computer in order to start the vehicle, so professional programming is required. This ignition switch comes with 2 keys. The chip is uninitialized. To resolve this, you can have a local locksmith copy the key and program the chip to match your original key. If the original key is unavailable, a locksmith can use a programming device connected to the OBD2 port to program the vehicle to accept the new key. Part Number: 35100-SDA-A71 Application: For CR-V 2002-2006 For Element 2003-2011 For 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 05-06 48 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 Keys with 48 chip Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.