While there are a few different reasons that a keyless entry remote might stop working most of them are pretty easy to check yourself.
Keyless entry car door handle not working.
If you plan on working on your car then a workshop manual or a subscription based manual is in order.
Ford replaced the module under the seat eventually under a couple of days investigation but were sure it was the handle as it s quite common with keyless entry problems.
Unfortunately their are no sub assemblies in the door handle.
Ford keyless entry not working the keyless entry is a convenience feature on the ford unless it stops working and then it can become a problem.
The instructions should not only include the two steps you need to activate the door lock but also include a detailed graphic showing you the location of the touch sensitive area.
The keyless entry pad may be an add on from the dealer which was just stuck on therefore comtains a battery need to remove the door panel and check for wires from pad sep 14 2008 1993 ford explorer limited.
Pull the exterior door handle outward and to the rear to release it from the exterior door handle reinforcement.
If no handle or lock are visible then you can be sure that the car has a touch sensitive lock installed.
The first step to fixing the problem is to determine what type of keyless entry you have.
Apparently the keyless entry has a sensor built into the door handle and a control module underneath the passenger seat.
This disable enables the proximity sensor.
I d try the handle first.
To install reverse the removal procedure.
Your should hear a chirp.
If nothing works the proximity sensor might be turned off.
There are wired pads and radio frequency pads.
The most common problem with these car key fobs is that the batteries just go dead over time in which case replacing the battery should fix the problem.
If the button fails it requires a completely new handle and they come unpainted so you need to have paint work done as well.
You can try unlocking the car then lock the drivers door from the inside manually then press and hold the lock button and trunk open button on the key fob for around 30 seconds.