I've had too much trouble with my keyless hidden under the dash (behind the power adapter, or in Anfrey's case, the ashtray). Currently it's not even working. Just stopped working several times and I'm tired of disassembling the dash. So, one day far from now when I have money I'll get aftermarket keyless instead.
Oh and the way it stopped working was it worked when we moved it, then it started only working when it wanted to. When it wanted to became less and less even though I reprogrammed it several times. So, I got tired of it and gave up, so it's just sitting under there serving no purpose what-so-ever.