2004 MAZDA 6..THE ALARM WOULD NOT WORK THIS MORNING THE DEVICE WOULD NOT LOCK OR UNLOCK THE DOORS..MY CAR WOULD NOT START THIS MORNING . IT WOULD NOT MAKE A SOUND. WHAT IS THE PROBLEM?

your also suppose to hit door lock 2x before start and if alarm still goes off problem with fob or your aftermarket alarm programming

try locking and unlocking with the button and see if that works- this should reset the security system-Denny

if you talking about door latch wont let door close.try to reset all door locks.first if you cant get door close.work unlock button with remote or door switch.then hold open door handle while you flat screw driver pull up latch in door latch should stay up so door will close.once get door close.try resetting all door locks by sitting inside vechicle with all doors close.remove key from ignition.open drivers door.wait 24 seconds.turn ignition switch on and back to lock position 3 times.press and release drivers door courtesy light 3 times.ensure doors lock and unlock.if not wait 40 seconds and repeat procedure.if this procedure fails. you have problem in the door latch and lock mechanism inside the door itself.

Have you tried replacing the battery in the key fob? That will usually make it work properly.

Unhook batt term- NEG. Use key to lock door(s)?

If they lock after you start to drive forward...and automatically unlock when you stop and place gear shift in park...that is a safety design...Many car builders use this, with certain variables as to when to auto lock, and auto unlock...if the locks are working on there own after you have started driving...that is another problem. Your owners manual should address how the locks in your Mazda 6 are designed to work. Hope this helps.

Programming
When
Remote control added or replaced. System malfunction.
How
Obtain all remote controls. Remove key from ignition switch. Close all doors. Open driver's door. Carry out the following within 24 seconds: Turn ignition switch ON and back to LOCK position 3 times. Remove key. Press and release driver's door courtesy light switch 3 times. Ensure doors lock and unlock. If not, wait 40 seconds and repeat procedure starting with driver's door already open. Press each remote control lock or unlock button twice. Ensure doors lock and unlock after each remote control operation. If not, proceed as follows: Press and release driver's door courtesy light switch once. Ensure doors lock and unlock twice. Repeat procedure starting with driver's door already open.
NOTE: A maximum of 3 remote controls can be programmed.

This usually works.Lock the doors with the remote.Press lock twice sounding the alarm.Then press the unlock button twice.Your car should start now.If that doesnt work try this,Lock the car again with the remote once.Go over to the passenger side door and use the key to unlock the door then press in the door unlock all doors.Hopefully by now it worked.Now if none of these work your security probably malfunctioned and theres only two things that will work,One is disconnecting the battery for 5 mins then reconnecting.unlock doors.the start.If that doesnt work you'll have to take it to the dealer to get the security reset or replaced.The steps I have wrot you are the diagnostics to reset it.I hope these work for you and good luck.See ya had have a great day..

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

Just curious, do you have an entry system?
or does it open with a key?
What happens when you try to start the car?
Anyway, I probably would disconnect the battery,
wait a few minutes and reconnect it if nothing else works.
Another thought is try all the doors.
There could be one door causing the whole problem.
Good Luck,
Paul

Courtesy of: forums.mazdaworld.org

Try this, it works on several 2002 models:


Step 1: Open drivers door and leave open.

Step 2: Lock and unlock the drivers door using the power door lock switch on the door.

Step 3: Insert key into the ignition.

Step 4: Turn key to on position and return to off position. (IMPORTANT - use ON position NOT ACC position). Do this 3 times within 10 seconds. Leave key in the ignition.

Step 5: Open and close the drivers door 3 times. (Door should be left open after this step).

Step 6: ECU should respond by locking and unlocking the doors.

Step 7: Press any button on remote #1. ECU responds by locking and unlocking the car doors.

Step 8: Press any button on remote #2 (etc.) Each time the ECU will respond by locking & unlocking the doors.

Step 9: Remove the key from the ignition and the ECU will respond a final time with a series of door locks and unlocks. You're done