I recently replace the battery in my 2005 Ford Mustang GT. After I installed the new battery the green light for my dealer installed alarm keeps flashing even when I am driving the car. I went to the dealer and asked how to reset the alarm so it wouldn’t keep flashing when it was turned off and while I was driving the car. The Tech told me to push the button under the dash and the green light should also be a button and to push it at the same time. I told him the green light is not a button, only a green light and that pushing the button under the dash didn’t fix the problem. He said he didn’t know any other way to fix the problem. Can you tell me how to reset the alarm light to stop flashing when it is not armed?

You will need to have the dealer do that.

may be it the problem of another throttle body.also check the ignition switch.

Check all of the battery terminals and cables and check the wires on the starter/selonoid, start from the battery and follow the cable out and check all conections , clean and tighten them and if it still does it the starter/selonoid is bad and needs replacement...

the alarm system is defective sir

have a check in it

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I thought the dealer had to reprogram the anti-theft processor.
Be careful with this since it may cause your car not to start.
Hope this helps.

may be look in and around auxillary battery for alarm

Ford sold a Ford branded alarm through the parts department. These sometimes were a dealer installed option on new cars. Mine would randomly stop responding to the remote and I would have the same symptoms as you describe. I had it removed and the original equipment factory system still worked. Be warned, if you have the Ford "accessory" alarm, your key fobs (remotes) are different and the method to program them is different from what you will read online. You can tell if you have the system by looking at your key fob. The standard Mustang key fob is a 4 button (lock, unlock, panic, and trunk). The accessory alarm uses a 3 button remote and clicking unlock twice would pop the trunk. I really wish I had a picture of the remote because there are 3 button Ford key fobs for cars without a trunk release although I don't think you should have one on a Mustang. Long story short, if you have the accessory alarm, you can solve your problem by having it removed but you will need new 4 button key fobs to remotely lock/unlock your doors

There is no way to answer that,you know that

I would remove the hack job alarm and return
your car to factory build specs

most likely if you have to jump it then your battery is not good or your baterry connections arent good or ground from battery to chassis isnt good or combination of either... Good Luck

Repair or replace the sending unit in the tank.