The smart button on my drivers side door handle no longer works and it seems my local infiniti dealer cant order it. Has anybody had similar issues? Does anybody know where i can find one?

InfinitiPartsDeal shows a number of handles that are still good p/n's in different colors. Chances are it's just your color that's unavailable, so you should be able to buy a mismatch and get it re-shot by a paint shop. I'd go to IPD and get your p/n using the VIN, then clear the VIN and enter a generic '06 M45 to see what other colors in the same part series are still available.

Hello,
since allot of the parts for our older model Ms are no longer available new I use LKQ to get OEM recycled parts at a fair price. You can use the link I've provided to see if can find what you need, good luck!

https://www.lkqonline.com/2006-Infiniti ... h4jKjOc4mj