How can I get my 1996 Mercedes started?

I did not intentionally set my alarm on my 1996 MB S320. I moved my car just a few feet without letting it warm up first. Now I get in to start, and my lock-out security feature is set. Normally that isn't a problem, I just take the key out and push the button on the remote to stop the shut-out. But this time that didn't work. I checked my remote, blinked weak, bought new batteries. Now it still blinks very weakly, tested 2 ways, with camera phone, and at auto store 'remote tester', says fine. What do I need to do that doesn't involve the dealer?