I've replaced the batteries in my 1997 850s keyless remote. It hasn't been used in a while due to my protracted search for the odd batteries. Once installed, the remote now only locks the car. I can hear the motor whirling when I hit unlock, and the locks move a bit. Is there something I can lubricate somewhere that may have tightened up from non-use? I reprogrammed the remote according to the manual without success. Ideas? Thanks in advance!