I drove my sons 87 300SDL to work (24 hrs). I locked the car with out problems. When I unlocked it the doors unlocked, but then the headlights and taillights began flashing like the antitheft alarm....no horn thankfully.
I have tried everything and it seems that I may have the wrong key to shut off the antitheft. I can still start the vehicle but the lights keep flashing.
I unhooked the battery, let sit for an hour and tried it again, but as soon as I open a door the lights begin flashing.

Can someone please tell me where the antitheft disconnect is so I don't have to drive my 2 hour commute with my lights flashing?
I already attract enough attention, I don't need this too!!!!

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1987 350SDL Parts Car
1987 350SDL #2 Sons Car
1991 350SD My Car-RIP 9/7/09
1992 300SD Her Car
1995 E300 Spare Car-RIP 4/23/09
1992 S320 My Car - Soon to be diesel
1990 W250 4x4 Cummins #1 Son's Truck
1993 D350 Cummins My Truck
1999 3500 Cummins Just Another Truck
1987 Executive Cat 3208 Family Wagon

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