Keyless entry problems

My keyless entry remote is unable to unlock my doors on my 2004 Seirra. I replaced the batteries and re-programmed the remote. It will lock the doors with no problem. I was wondering if anyone else had issues, before I spend $70.00 on two new FOBs.

Mine does exactly this every now and then. About 3 months apart. I have to snap it open and clean the printed circuit and rubber button with contact cleaner. Alcohol might work also.
Watch the battery polarity when you reassemble it.

Bob,
Thanks. It fixed the problem.

Sometimes just an old toothbrush and a quick few scrubs on the circuit board will fix the problem if only a few of the buttons aren't working anymore.