2006 Honda Civic Owner's Manual - Page 67

Keys and Locks U.S. EX and Si models MASTER KEY WITH REMOTE TRANSMITTER KEY NUMBER TAG VALET KEY (Gray) All LX models and Canadian DX-G, EX, and Si models MASTER KEY WITH REMOTE TRANSMITTER KEY NUMBER VALET KEY TAG (Gray) The master key fits all the locks on your vehicle. The valet key works only in the ignition and the driver's door lock . You can keep the trunk and trunk release handle locked when you leave your vehicle and the valet key at a parking facility. On DX model (except Canadian DX-G), the passenger's door can also be locked or unlocked with the key. DX model (except Canadian DX-G) MASTER KEYS (Black) KEY NUMBER VALET KEY TAG (Gray) You should have received a key number tag with your keys. You will need this key number if you ever have to get a lost key replaced. Use only Honda-approved key blanks. 74