Hello -

I currently have a 2009 RX350 and love everything about it except the fact that I have to get the key/fob out of my purse/pocket to unlock the car. I'd like to trade this car in for either another RX350, a RX400h or RX450h. I've been searching online (not sure I'm using correct terminology), but haven't found anything. Can anyone tell me which of the above models have a smart key where you can leave the fob in your pocket and push a button on the car to unlock and which year this became available? Also, which model/years have a timing chain vs timing belt.

Thanks for the help,

 

Welcome to CL, lorigar. Smart key access began with the third gen RX350 and 450h. The 400h is second gen. So you're looking at 2010+ model year. Timing chain had been standard since I believe the 2007 RX. Earlier model years had a timing belt.