Verified answer

when you use the "key fob" to unlock the doors it also turns off the alarm, when you manually unlock the doors the alarm is still on and only turns off when the computer verifies the right key is in the ignition. (when you start the car)

The antenna for the key fob is in the back glass, The connector is top center under the head liner and is very delicate. if your back glass is still broken this is why your key fob doesn't work (no antenna) If your back glass has already been replaced then they have damaged the connector or have not plugged it in.

good luck

HTH

certainly, i think of the difficulty is your battery. i might agree that an intermittent alarm putting off without battery difficulty ought to be the hood change or in all hazard the interior sensor. Being that your battery is likewise ineffective everytime this occurs, the battery or a draw on the battery is maximum possibly inflicting a skill furnish loss to a module this is making the motor vehicle think of somebody is tampering with it and putting the alarm off. I artwork at a broker and notice old vehicles like yours with ineffective batteries sitting around with the alarms going off many times each of the time. i will circulate one step extra to point 2 of the greater person-friendly battery draw issues which you will shop an eye fixed out for. in the experience that your heater blower speeds are performing weird and wonderful or staying on with the motor vehicle off your blower resistor ought to be drawing skill from the battery. additionally old 5 sequence like yours might have problems with the electrical powered engine cooling followers in front of the engine shorting out, so which you are going to be conscious that element staying on or burning up. yet while that battery is old or has been sitting, get it replaced to initiate on your difficulty. solid luck.