What is this button for?

I accidentally found this button today as I was reaching for the hood release.
Is this for tire pressure?

 

When would you need to set it?

 

Ejector seat. Manuel told me.

 

Naw, man. That's auto-deflate for the Desert Runners. Pre-set to 15 psi.

 

When you set a new pressure, rotate tires or change tire size.

 

Makes sense

 

....is it a simple process or do you just press the button and thats all......sorry for dumb question, but i am stumped

 

Pretty sure there's a sequence;
1)Tap 3 times
2)push once
3)tap 3 more times but in a slower frequency
4)wiggle for 5 seconds BUT NO LONGER than 7 seconds
5) finally, tap 1 time to finish

But really.. it's in your manual

 

i have moved and misplaced my manual...dont keep it in truck

 

I thought it was up, up, down, down, left, right, left, right, B, A?

 

■ How to initialize the tire pressure warning system Vehicles without a smart key system: Park the vehicle in a safe place and turn the engine switch to the “LOCK” position. Vehicles with a smart key system: Park the vehicle in a safe place and turn the engine switch off. Initialization cannot be performed while the vehicle is moving. Adjust the tire inflation pressure to the specified cold tire inflation pressure level. (P. 577) Make sure to adjust the tire pressure to the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure level. Vehicles without a smart key system: Turn the engine switch to the “ON” position. Vehicles with a smart key system: Turn the engine switch to IGNITION ON mode. Press and hold the tire pressure warning reset switch until the tire pressure warning light blinks slowly 3 times. Vehicles with a multi-information display: “- -” will be displayed for inflation pressure of each tire on the multi-information display while the tire pressure warning system determines the position of each tire. When position of each tire is determined, the inflation pressure of each tire will be displayed on the multi-information display. 1 2 3 4 7-3. Do-it-yourself maintenance 465 7Maintenance and care  Vehicles without a multi-information display Vehicles without a smart key system: Wait for a few minutes with the engine switch in the “ON” position and then turn the engine switch to the “LOCK” position. Vehicles with a smart key system: Wait for a few minutes with the engine switch in IGNITION ON mode and then turn the engine switch off.  Vehicles with a multi-information display Drive the vehicle at approximately 25 mph (40 km/h) or more for approximately 10 minutes. When initialization is complete, the inflation pressure of each tire will be displayed on the multi-information display. Initialization will take longer than approximately 10 minutes if the vehicle is stopped for a long time, such as at traffic signals.

Tire size P245/75R16 109S Tire inflation pressure (Recommended cold tire inflation pressure) Front tires: 32 psi (220 kPa, 2.2 kgf/cm2 or bar) Rear tires: 32 psi (220 kPa, 2.2 kgf/cm2 or bar) Spare tire: 32 psi (220 kPa, 2.2 kgf/cm2 or bar) Wheel size 16  7 J, 16  7 JJ Wheel nut torque 83 ft·lbf (113 N·m, 11.5 kgf·m) Tire size 265/70R16 112T Tire inflation pressure (Recommended cold tire inflation pressure) Front tires: 30 psi (210 kPa, 2.1 kgf/cm2 or bar) Rear tires: 30 psi (210 kPa, 2.1 kgf/cm2 or bar) Spare tire: 30 psi (210 kPa, 2.1 kgf/cm2 or bar) Wheel size 16  7 J, 16  7 JJ Wheel nut torque 83 ft·lbf (113 N·m, 11.5 kgf·m) Tire size P265/65R17 110S, P265/60R18 109H Tire inflation pressure (Recommended cold tire inflation pressure) Front tires: 29 psi (200 kPa, 2.0 kgf/cm2 or bar) Rear tires: 29 psi (200 kPa, 2.0 kgf/cm2 or bar) Spare tire: 29 psi (200 kPa, 2.0 kgf/cm2 or bar) Wheel size 17  7 1/2 J, 17  7 1/2 JJ, 18  7 1/2 J Wheel nut torque 83 ft·lbf (113 N·m, 11.5 kgf·m)

 

Ahhh memories of my old game shark hacker box

 

Super useful thanks!

 

https://www.toyota.com/t3Portal/document/om-s/OM04005U/pdf/OM04005U.pdf
Here is a link to the PDF of the manual
Searchable with CTRL F and hyperlinks work to page numbers

 

And by all means be sure to check your spare tire pressure now and then. It also has the tpms I believe...

Haven't checked my 16 yet but from experience with my 06 I couldn't reset the tpms because the spare was low..

 

I think 2008 or 2009 was the last year a Tacoma had TPMS in the Spare.

 

Whew thanks no need to check then !
Thanks Shakerhood

 

No problem, I usually pull the Spare down twice a year to check, last thing you want is for that to be flat

 

which left.......you military left...right

 

thank you