How do you open the trunk to a 1989 Mercury Grand Marquis without the keys or the electric switch inside car?

Answer 1

It happen to me one time, I removed the swicht from the glove compt., run a wire from the battery ( positive and negative) to the swicht , make the contact to open it, it work fine and easy.The lock can be picked or a key fit by impressioning. This can be done by a locksmith.

I have a '89 Merc. Grand Marquis and in the fuse panel there is an ignition fuse. If you jump a live wire to to that fuse it turns the on the accessory, from there you can press the switch in the glove box. if that doesnt work you can take the switch out of the glove box and put a 12v pos to it while 12v grd to the car should open it. if the cylinoid in the truck is dead meaning it wont work putting voltage to it then you would have to pick the lock, or have one made like the other reply. if you have any questions let me know.

On the exterior keypad, enter your 5-digit code and then press '3' to pop the trunk. Picking the lock is almost impossible for all but the most skilled locksmiths ...and usually results in flaky lock operation after that anyway.

if your keys are locked in the trunk ( i had this problem today actually while installing a few amps for my new system) you can take the back seat panel down, cut a hole in the fabric and there should be two big holes, use something long with a hook at the end (a modified coat hanger will do the trick) and shine a flash light in there, and well good luck hooking the keys lol.

Another :As stated above, enter your 5-digit code into the touchpad, then press the 5|6 button. It should pop the trunk. If you don't HAVE a touchpad, you could have it picked, or you could drill out the cylinder yourself and replace it with a new one. Good luck.