2010 Rx350 Light Remind - Warning For Leaving Headlights On

[msat]

Okay, this is bugging me.

My 2010 Lexus RX350 doesn't perform the complementary dingaling warning when the lights are left on.

Every car I've ever had, and even the Lexus loaners I get, dingaling if I leave the lights on. This car? No.

The dealer is saying this is "by design" because it has auto off lights. That doesn't make sense, since the loaners all ding when I leave the lights on (yes, I checked).

What do I tell them to turn on to make this work the way "all other" vehicles work?

I found something called "Light Remind" in "C Best Settings"

Warning LIGHT REMIND OFF ON/OFF of headlight reminder buzzer ON/OFF

Is this applicable to the 3rd Gen 2010 Lexus RX350?

Also, is there some way I can do it myself?