With the door in the unlocked position, press the lock button on the keyless remote 4 times in a row, holding it down for 4 or 5 seconds on the fourth press, this will cause the module to re recognized the remote , the remote has to be the original one though, new ones need to be programed to the VIN of the vehicle your using it for.
Go to your dealer. Local reprogramed mine without much fuss or thought.
It's the sensor for the keyless entry remote.
The remote access module is located under the dash cover on the passenger side at the windshield. This piece easily pops off with a screw driver. This will disconnect the keyless entry system.
To program a keyless remote for a 1993 Lexus SC 400, first, sit in the driver's seat and close all doors. Insert the key into the ignition and turn it to the "On" position and then back to "Off" five times within 10 seconds, ending in the "On" position. Press the "Lock" button on the remote within 30 seconds to register it. If successful, you'll hear a confirmation beep. Repeat the process for any additional remotes.
In the gas tank.
The 1993 Mercury Villager does not come with a factory-installed keyless entry system, as it was not a common feature for vehicles of that era. However, aftermarket keyless entry systems may be available for installation. If you're considering adding keyless entry, it's best to consult a professional installer for compatibility and options.
the dealer has to or if its after market then call the company
The remote trunk release for a 1993 Grand Prix is in the gove box.
Remote - film - was created on 1993-09-22.
Remote imaging protocol was created in 1993.
Remote - 1993 V is rated/received certificates of: Germany:6 Iceland:L UK:U USA:PG
In the 2002 it is under the rear seat on the driver's side maybe the same for yours