When I bought my 2004 Mazda 6i about a year ago, my salesman never gave me a remote for the car. He said they had a box full of extras and told me to come back that weekend to get one. After going to the delaership every weekend for close to 3 months, someone finally gave me an old remote with all the buttons graphics worn off. No big deal. A salesman shows me how to program it(ignition 3 times, door jam 3 times, etc). Remote worked fine for a few months. Then it slowly started losing signal and I'd pretty much have to be right next to the car for it to work before it finally gave out all together. I replaced the battery and it didnt work. I took the remote to Auto Zone where they have an actually signal strength test to see if your remote is still functioning. The remote was shot. No signal. I went back to the dealership and demanded a new remote and refused to pay the $125+ for a brand new remote. After close to an hour of arguing with the sales manager, he gave me another used remote, no charge. Of course now they wanted $85 dollars to program it. I Already know the steps to program it and couldnt justify spending that much cash for them to perform that crazy easy procedure. I took it to Auto Zone and this remote was working but for some reason when I follow the programing steps the remote doesnt do anything. Ive done that diagnostic test. Everything went perfect. I called the dealership and they said it could be a problem with the Keyless control module. I cant find any information on that part anywhere on the net. I called auto zone to see if they carried that part or even knew where it was located in the car with no luck. If the diagnostic test ran smoothly then wouldnt that mean the module/receiving end in car is functioning properly? If not then does anyone know where the module is located? Also if anyone has some answer as to why I cant program this remote. Im trying to avoid going to the dealership at all cost. I dont trust them and think everyone there is a worthless parasite.