1. The keys have a chip inside of them. The chip provided is 48, and the chip key must match the engine computer to start the car, so it is necessary to ask a local locksmith to handle this. This ignition switch comes with 2 keys, and the chip is initialized. 2. To solve this issue, you can have the key to the ordered lock copied by a local locksmith and ask them to program the chip to match the one in your old key. 3. 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. 4. Part Number: 35100-SDA-A71 5. 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. 6. 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. 7. Color: Silver + black 8. Material: Metal 9. Package Contents: 1 x Ignition Switch Lock Cylinder; 2 x Keys with 48 chip. Only the above package content is included; other products are not included. 10. Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.