Where's the battery? Behind/under the back seat? The battery is dead. 3 doors and the glove compartment are locked and the key won't even unlock them. Help! Thx

Do you have keyless entry ?
The remote keyless entry system performs the following functions:
• Locking the vehicle doors
• Unlocking the vehicle doors
• Opening the rear compartment lid

Rear Compartment Lid Release Circuit Description
The BCM receives a signal via Class II from the PCM indicating the position of the transaxle range switch. When you press the release button on the RKE transmitter, a signal is sent from the remote control door lock receiver through circuit 377 to the BCM. Then, the BCM sends a ground signal through circuit 253 to the rear compartment lid release relay. The relay receives power from the DOOR LOCKS fuse. When the relay receives the ground from the BCM, the relay's internal switch closes sending B+ (via circuit 56) to the rear compartment lid lock release actuator. A ground is always supplied to the actuator through circuit 350. When B+ is received at the actuator through circuit 56, the rear compartment lid releases.

You could jumper pins at the rear compartment lid release relay , this would open it .
Rear Compartment Lid Release Relay
Behind the IP compartment, attached to the underside of the cross-car beam . Need to pull glove box out .

security lockout

Rear Compartment Lid Release
The rear compartment lid can be released by depressing the rear release button in the glove box or holding either front power door lock switch to the unlock position for a minimum of 2 seconds or by pressing the rear compartment release button on the key fob. The transmission must be in the PARK position for the rear compartment to release. No Key lock on the trunk ?

THAT really sounds like someone is pranking you by swapping your car for another car just like it.

Window fuse's and relay's may be up under driver or passenger side dash or behind glove box, under the hood and even under the seats, and finally on the ends of the dash. All passenger power windows and locks are controlled thru and get power from the master control switch on the drivers door. Could be a broken wire in the rubber boot going from the door to the body. You will have to eliminate each till you find the culprit. Check that all switches return to neutral when released. It could also be the body control module.

Instrument Panel Fuse Block
The instrument panel fuse block access door is
located on the driver side edge of the instrument panel.

Pull off the cover to access the fuse block.

The vehicle may not use all of the fuses shown.

Fuses Usage
1 Rear Seats
2 Rear Accessory Power Outlet
3 Steering Wheel Controls Back light
4 Driver Door Module
5 Dome Lamps, Driver Side Turn Signal
6 Driver Side Turn Signal, Stop lamp
7 Instrument Panel Back Lighting
8 Passenger Side Turn Signal, Stop lamp
9 Passenger Door Module, Driver Unlock
10 Power Door Lock 2 (Unlock Feature)
11 Power Door Lock 2 (Lock Feature)
12 Stop lamps, Centre High Mounted Stop lamp
13 Rear Climate Controls
14 Power Mirror
15 Body Control Module (BCM)
16 Accessory Power Outlets
17 Interior Lamps
18 Power Door Lock 1 (Unlock Feature)
19 Rear Seat Entertainment
20 Ultrasonic Rear Parking Assist, Power Liftgate
21 Power Door Lock 1 (Lock Feature)
22 Driver Information Centre (DIC)
23 Rear Wiper
24 Cooled Seats
25 Driver Seat Module, Remote Key less Entry System
26 Driver Power Door Lock (Unlock Feature)

You have a keyhole under the mirror! It will be very difficult to turn like you're gonna break the key. You can make it easier to turn if you push in on the door while you're turning the key. Good Luck!

I have a '94 Thunderbird also and the beeper is on when the key is removed and the drivers door is open, but goes off when I close the door.

open trunk, disconnect rear trunk light. use jump box and connect wires to pos neg on jump box. this will give u enough juice to open doors, I have done it twice. easy to do

take out the back seat.