If they have auto high beams there will be a button next to traction control and/or steering wheel heater.

None of the 2013-2019 Premiums I’ve ever seen had them

 

I have auto high beam on my 2022 Premium. I checked Lexus and the MY2022 brochure lists it as a standard option (see p. 17):
https://www.lexus.com/content/dam/le...X-Brochure.pdf

 

my20 made the adas systems previously reserved for the luxury std across the board. AHB being one of them.

 

I have auto high beams in my 2016 but no button for them. When the headlights are set to AUTO - if you push the left stalk in like you are going to activate your high beams it will stay locked in place and the auto hibeam light will come on the cluster. If the headlights are set to anything other than AUTO then the stalk works like a conventional high beam.

 

In US market AHB only on fully loaded 10-13 models that have equivalent Driver Support Package hardware of ‘14-‘19 models. These ‘14-‘19 models would be Luxury Trim with Driver Support Package

 

If you are having climate control issues you can run a test that diagnoses the the climate control unit only...
​​​​
1. Leave vehicle off
2. Simultaneously press and hold the climate control ON/AUTO button and the RECIRC button
3. Push ignition button twice to the "ON" position (do not start vehicle)

Climate control unit will run the diagnostic process and display any faulty codes in the climate control display.

This works for most Toyota/Lexus vehicles.

Here are the codes and what they represent...

00 Normal
11 In-Vehicle Temperature Sensor Circuit
12 Ambient Air Temperature Sensor Circuit
13 Evaporator Temperature Sensor Circuit
14 Coolant Temperature Sensor Circuit
21 Solar Sensor Circuit
22 Compressor Lock Sensor Circuit
23 Pressure Switch Circuit
31 Air Mix Door Position Sensor Circuit
32 Air Inlet Door Position Sensor Circuit
33 Air Outlet Door Position Sensor Circuit
41 Air Mix Servomotor Circuit
42 Air Inlet Servomotor Circuit
43 Air Outlet Servomotor Circuit

I know this because I ran this test when my AC was acting up and found my (41) Air Mix Servomotor needed to be placed to the tune of $800 (my own longtime mechanic's price). This is basically all labor due to the part being buried in the dash and having to disassemble most of it to access the part. I couldn't imagine what the dealership would charge for this service!

 

Made legible.