Accessing the Ambient Air Sensor 2015

On my 2015 I can see the Ambient Air Sensor mounted directly under the hood latch area but there seems to be no way to access that and get a read out on my Scan gauge. Is it because just the HVAC control system uses it and not the truck in general? When it cools off outside I will disconnect the plug and see if its throws a Code. Unless someone else already knows the Answer??

 

The A/C amplifier is the only module that uses it and it isn't on the network therefore it can't be read with any scan tool that I'm aware of.
Your only option for ambient temp is a Gentex rearview mirror or something homebrew unfortunately.

 

DM thank you for your reply, I was hoping it could be read. Having problems finding the Gentex mirror combo and I dread the thought of stringing all those wires.

 

Pull your upper console down and see if you have the plug there, if you do you can use this kit and only have to run the 2 temp sensor wires and mount the sensor.
I've had it in mine for over a year now and been very happy with it, took me less than an hour to install.

 

THANK YOU!! Exactly what I was hoping to get for a reply!!!!

 

I'll snap some pictures of my install when I get time, there's 1 philips screw holding the uper console behind one of the sunglass holders if I remember correctly, the rest is clips.

 

So it comes with mirror options
which one is better?

 

So is the temp sensor just plug & play with the Gentex mirror? I have a 2014 Tacoma and am wishing the mirror displayed temperature. Your picture makes it look like the OEM temperature plug is still there but not used

 

I did some searching when I bought mine but I couldn't come up with a clear answer, they seem to be the same thing.
Maybe the 455 is a newer model but idk
I went with the 177 Dual display, I paid the extra to get the cover (seems overpriced for a piece of plastic) for a cleaner install but thats up to you.

 

The plug supplies ignition power and ground to the mirror, you will still have to run the 2 wires and mount the temp sensor that comes in the kit.
While there is a "temperature sense" wire in the plug it is a digital signal and NOT compatible with the Gentex mirrors, if you try to connect to it you will fry your mirror or the A/C amplifier.
The earlier trucks that still came with the temp display in the mirror used it I believe but from what I've read that's a Toyota specific mirror and good luck finding one.

 

Here's where the screw is for the upper console.

The mirror installed.


I chose to run the wires through next to the hood release cable as I have a manual and don't have a blank plug where the instructions show (purple wires are the temp sensor the others are for my air compressor).


And I mounted the sensor to the grille with a self tapping screw.



The kit comes with pretty detailed instructions on routing the interior wiring.

 

Yes, if you get the right mirror. I have a '14 and did add a second sensor up front dedicated to the mirror but all works well.

 

Wow thanks for detailed and great posts!

Yes I have the plug and Yes just ordered, Thank You !!

 

I did the same mod using a Bob’s mirror and install as @Dm93 about 4 years ago. Bob’s terrific to work with and the install is pretty simple.


Still can’t believe Toyota would produce a truck without a temp display.

It’s a must do mod

 

Yes to have the wiring cable in and no compass/temp mirror is so stupid. I used to own Chevys before I saw the light. They all had the compass/temp mirror and I loved having. Well I have mine on order, hoping it stays cool so I can get installed.

 

Just wondering how your install turned out, or have you not gotten around to it yet?

 

Yes, I got side tracked. The kit is here and the install instructions are great... just need to get some other things out of the way!

 

Ok, keep us posted.
I can't remember if the kit came with the heat seal type butt connectors or not but if not I'd reccomend those or solder and heat shrink (sealant type), I soldered mine but not everyone likes to solder.

 

OK Got Er done, the instructions were great. Install in an hour?? More like 3-4 hours. First you do not need the $14 wire cover it looks fine without it. I plugged in the mirror to the plug in the overhead and just pushed the wires under the lip of the headliner. When removing the cover and handle on the left side, you need a piece of plastic to pry off those screw covers, I used a piece off a Bondo spreader. The screws are 10 mm do not even think about a Phillps, way to tight.

I followed the hood release cable when going thru the firewall. Used a sharp wood lead pencil to make an access point from the engine bay side and then 1/4 ID nylon tube cut at an 45 degree angle, pushed it thru and then guided the taped purple wires inside the tube. In fact I left the tube in to protect the wires. On the top side of the dash, same type of tube to fish the wires down. I used Top Hat crimp connectors, twist the bare wires together, insert and crimp all done inside the car and then put behind the kick plate.

The compass is pretty accurate and I did set the zone the thermometer is also right on! A very worth while addition to the truck. Thanks to Dm93 and the rest of the folks.

 

FWIW..... Not sure about Scan Gauge, but, one of the parameters measured by the Ultra Gauge is outside ambient air temps.