You have to hold the sliding door buttons to open them. As for the unlock button, even if you hit it multiple times, the doors re-lock automatically if nothing has been opened for 30 seconds.I find the remote buttons to be a little to sensitive. I've had the key in my pocket only to come back and find one of the sliding doors open. After it happened twice, I reprogrammed the Odyssey's behavior to require two clicks instead of one to unlock the van. I couldn't take the chance of something getting stolen.