My door locks are functioning...kind of. They almost always work when the car locks/unlocks automatically, like when reaching 2-3 mph or when I turn the car off. If I use the door switches OR the key fob, the locks will work once, then get continually weaker each time the buttons are pushed. After the 1st time they are almost always too weak to work a 2nd time. When using the key fob the horn also sounds "weaker" for lack of a better term. The horn beep when using the key fob never goes away entirely, just sounds weaker sometimes. Both door locks function just fine using the key in the door so I don't think the cylinders are gunked up. I have a new battery, new positive battery cable, and new terminals that are both very tight connecting the battery (optima red top). Any idea what could be causing this?? It is driving me crazy... Someone posted about this very thing a few years ago but the thread never says what the fix was. Please help!