Last night while BBQ'ing I was walking around my RX, 2011 PP#1. While walking around I noticed the interior lights and the lights on the bottom of my mirrors luminated as I walked.
Initially I thought I had my keys in my jacket pocket, but both sets of keys were in the house.
Has anyone experienced this or offer an explanation? I tried to replicate the same behaviour on my IS without luck
Thanks in advance,
Chris

 

What is a "PP#1"? Were you peeing beside your car during a BBQ break? Gross. LoL!!
It only does this if it senses the key in proximity to the vehicle. I'd bet you had your key card in your wallet and didn't realize it.

 

Which button turns the inside lights on when you open the door?

 

Premium Package #1, without HID lights. I bought it as CPO, so no wallet key like my 2nd Generation. As for what keys, if I have the FOB in my pocket and I walk by the car the lights will illuminate.
All of the keys were inside of my house when the lights came on.

 

I took my RX to the dealership with my concerns. The diagnosis was the rear passenger's door locking mechanism wasn't functioning properly. The mechanism was fixed, car washed and covered as part of the extended warranty.