# 2007 Mazda CX7 **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [May 24, 2012, 6:55pm UTC](https://community.cartalk.com/t/2007-mazda-cx7/72617 "2012-05-24T18:55:16Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![iancohen45](https://avatars.discourse-cdn.com/v4/letter/i/bcef8e/32.png) [@iancohen45](https://community.cartalk.com/u/iancohen45)\ **Post date:** [May 24, 2012, 6:55pm UTC](https://community.cartalk.com/t/2007-mazda-cx7/72617/1 "2012-05-24T18:55:16Z")
My wife’s 2007 Mazda CX-7 is having an issue with both key fobs not locking the/ unlocking or allowing the horn panic button to operate. Both key fobs have new batteries in them. When I open the driver’s door a key in ignition sound chimes without the key in the ignition (this only happens with the driver’s door). I have already reset the ECM by disconnecting the battery and hitting the brake and waiting ½ hour. The red dash key ignition immobilize light flashes on the dash until I put the key in the ignition and the car will start normally. I have replaced ignition switch and returned it to AutoZone because that did not solve the problem this was the electrical portion of the ignition. ---
**Author:** ![MTraveler](https://avatars.discourse-cdn.com/v4/letter/m/ccd318/32.png) [@MTraveler](https://community.cartalk.com/u/MTraveler)\ **Post date:** [May 24, 2012, 7:04pm UTC](https://community.cartalk.com/t/2007-mazda-cx7/72617/2 "2012-05-24T19:04:52Z")
Your keys need to be synchronized with the entry system. Your owners manual should have the procedure. I found this description for Mazda but it might not work for your model. > **[How to Program Chipped Mazda Keys](https://itstillruns.com/program-chipped-mazda-keys-6961584.html)** > > Mazda uses chip technology in its ignition keys that enables the car’s computer system to recognize the ignition key to start the vehicle. When a key is inserted into the ignition that is not recognized by the computer, the ignition system will be... A call to the Dealer might be in order.