What is this knob for?

Anyone able to tell me what this round knob is for??

 

Display dimmer.

 

I had to read that twice. Thought you said "display dinner"

 

Time for lunch!

 

I haven't ate breakfast yet. Can you tell I'm hungry

 

Blinker fluid heater knob... for winter use.

 

Great! Thanks!

 

Was there no owner's manual included with the truck purchase? I don't mind any questions being asked, but was curious what the new car buyers did before the Internet.
Merry Christmas!

 

20 years ago, the new car buyer had the manual.

 

That’s when they came with a Thomas map guide to when choosing the navigation option

 

What sick puppy doesn't leave the owner's manual in the glove box?
As that was the case, a fair and reasonable question.

 

https://m.youtube.com/watch?v=Dpwl45hUQfc&pp=ygUQZWplY3RvIHNlYXRvIGN1eg==

 

This happened with my wife's 2014 Rav4 when we bought it in 2019..

 

Yeah really, 90% of people don’t read the manual anyway, yet it’s never in the glove box.

All my cars and trucks have all the manuals and paperwork along with the window sticker.

If you don’t do that you should be kicked in the dick.

 

Play with it after dark and see what it does. I've known people who think they have an electrical problem only to find they've turned it all the way down. The one next to it use only if you get stuck in mud/snow.

Want your head to really go into a spin? There's lights in the ashtray and glove box too.

 

What ever you do OP, don’t touch that dial. PSA
It’s for your dashboard lights, brightness.

 

I still have my Thomas Guides. I just can't bring myself to get rid of them.

EDIT: I realized I quoted the wrong quote. Ah well.

 

My shrink-wrapped manual and its pouch just take up space on my bookshelf. It's 2023, ain't nobody got time to flip through books. I keep PDF manuals on my phone because they are searchable, to look up things like fluid capacities, along with a serpentine belt diagram.

 

100% I would have twisted that knob and discovered the use myself. probably twisted it for a year in daylight wondering, until that fateful night I try with the headlights on...ahhhhhaaaa!