Auto lock doors?

[Kopper]

Hi I am looking for an auto lock setting on my 2012 RX450H where if I forget to lock the doors after leaving the car when parked, it will automatically lock all doors. 

I had a look at all the lock settings through the steering wheel button but nothing seems obvious. There is also no Vehicle Customisation option on the main console. 

Not sure if this feature is available for this model? 

Thanks

[Herbie]

I don't think that's available on this model year but if it is, it could be something that you need Techstream (or a dealer) to do.

[Barry14UK]

It can be done on button in group control by drivers arm rest on my car which is 2015.  I have done this inadvertently a couple of times when using the group of buttons in the area, intending to get into boot but mirrors have swung in and doors locked before I did this, meaning I had to use key fob to unlock and then press   appropriate button to cancel self locking.  Check the buttons to see if you have this on your model.