Remote does not open doors using key does not disable alarm after starting car, alarm resets and goes off when door is opened

thats how its suppose to work the key resets alarm ==by a fob online for a few dollars and program to car [free program] ==when you use key to unlock and enter vehicle you have a few seconds after opening door to turn vehicle on or start it and doing so resets alarm when you leave vehicle and lock it alarm is active

Try resetting the alarm, using the instructions given at the link below. I'll also copy the text here.

1. Insert the ignition/door key in the door lock on the driver's- side door of your Mountaineer.
2. Turn the key to the lock position.
3. Turn your key to the unlock position.
4. Turn your key to the lock position.
5. Turn your key to the unlock position. Your alarm is now disabled. If your key fob works, you can also press the unlock or alarm-disable button on the fob.
6. Start the Mountaineer's engine and allow the vehicle to run for at least 10 minutes. This will allow the alarm to relearn the default settings. You must make sure that you have disabled the alarm first, however, before you attempt to start the vehicle, so that the alarm will reset itself.

http://www.ehow.com/how_5978302_reset-mercury-mountaineer-alarm.html


If these instructions don't work, you can try resetting the car's computer by unplugging the battery for half an hour. However, that will reset the keyless entry code, as you can see in the fixya article I link to at the bottom

http://www.fixya.com/cars/t4755856-we_bought_it_used_and_we_dont_know_the_k

Inside the key fob are contacts that get dirty, both the electric side and the push button side, carefully clean them both.

Use your key to turn the rear hatch key cylinder before going into your jeep. That will turn off the factory security system.

Insert the key into the door lock on the driver side and move it to the unlock position two times quickly. That should turn off the alarm.

open door. when alarm goes off put key in ignition and turn it on start car. this should disarm the factory alarm.

lock your doors and close it wait till alarm resets and then unlock door with key and this should take care of you problem

If you hook up the jumper cables can you disable the alarm with the remote?

you can try switching the key to the "on" position then open the hood and disconnect the negative terminal of the battery and reconnect after 2minutes. this will allow the alarm to be '"reset" and will recognize that you have the key for the vehicle.