LED turn signals
 

How do you turn on your mirror led turn signals lights on 2018 GS350?

@DAVEB1980 the side-view mirror built in LED turn signals come on automatically with the rest of your turn signals - just push the stalk up or down and they should blink along with the front/rear turn signals.

Its not a 2018 but they didn't change anything with the LED signals on the mirrors - you can see them flashing in fellow member trbosmitty's vid :

What do you mean? You signal like how you do in every other car and it'll be on.

So they are always on? Can I see them working form inside the cabin? I am pretty sure when I tested this morning I didn't see anything.

I am speaking about the side mirror led lights. Not the front head beams. I saw in a video the side mirrors blink with your turn signal.

In the vid I posted above, look carefully at the side mirror and you'll see the yellow LED going on/off in conjunction with the front turn signals.

If your 2018's don't show this behavior, i'd recommend taking it to the dealer to have a look because those LEDs should last the life of the car unless they are damaged or there is some kind of electrical/ECU logic problem.

If u fold ur mirrors and use ur blinkers or turn on the hazards lights, u will be able to see it from inside the cabin. Dark places also helps.

Perhaps you can go old school like me and step out of the car to look?

Was thinking the same. Turn on hazards, walk around car. :D

Yes that does make sense. I just figured there was a setting.

Common Sense