My $5 mod in 5 mins.

[RichinRidgewood]

Taking out the dummy plug is very easy.
Now, if you need to remove the actual light sensor after installation, *that* will be a royal PIA.
The locking tabs are different and need to be depressed from under the dash to push out the sensor. Be sure to test your sensor before snapping it into place.

Yeah I’d like to see how they would do it. Remove the dash? Pull the radio?

 

[RichinRidgewood]

Conversion Harness

2020
p/n 8912106020
$137-$180
*for the higher content 4Runner

2020
p/n 89121-30020
$56
*for offshore and Lexus. Some people have used this on on the 2020 4Runner

2019
p/n 89121-50020
$5
*2019 SR5P?


I wonder if a harness could be created/made to convert the 2019 p/n 89121-50020 sensor to the correct pin configuration for the 2020 p/n 89121-50020 and later ? It would be a substantial savings and the availability of 89121-50020 is much greater. The assumption is that the pin configuration is the only difference which I dont know to be true.

 

[xyzzy]

TL;DR Summary data table and key thus far from this thread.

Note:

• Many who responded that the simple sensor replacement worked did not offer what vehicle it worked in and that is not shown
• Some clarified CA spec or US spec and that is shown
• there were conflicting responses regarding SR5Ps
• I am not marking the SR5Ps as plug-and-play working if they need the harness wiring to make this mod work.

You must turn your brightness dial (the dial to the left of the steering wheel) off of the clicked (highest) setting for this to work and your headlights must be on to experience this mod working.

You may need to adjust your Day mode and Night mode settings, visit https://www.toyota-4runner.org/3315203-post55.html for instructions.

p/n 89121-50020 6-pin sensor for 2016 - 2019 models
p/n 89121-0E060 4-pin sensor for 2020 - ???? models (old p/n 89121-30020 also reported to work)

If you need to fabricate a harness visit https://www.toyota-4runner.org/3435385-post267.html and https://www.toyota-4runner.org/3435546-post270.html for details.

Obviously YMMV.

 

[RichinRidgewood]

TL;DR Summary data table and key thus far from this thread.

Note:

• Many who responded that the simple sensor replacement worked did not offer what vehicle it worked in and that is not shown
• Some clarified CA spec or US spec and that is shown
• there were conflicting responses regarding SR5Ps
• I am not marking the SR5Ps as plug-and-play working if they need the harness wiring to make this mod work.

You must turn your brightness dial (the dial to the left of the steering wheel) off of the clicked (highest) setting for this to work and your headlights must be on to experience this mod working.

You may need to adjust your Day mode and Night mode settings, visit https://www.toyota-4runner.org/3315203-post55.html for instructions.

p/n 89121-50020 6-pin sensor for 2016 - 2019 models
p/n 89121-0E060 4-pin sensor for 2020 - ???? models (old p/n 89121-30020 also reported to work)

If you need to fabricate a harness visit https://www.toyota-4runner.org/3435385-post267.html and https://www.toyota-4runner.org/3435546-post270.html for details.

Obviously YMMV.

This is good but adding the correct part number for each would be a help.

 

[xyzzy]

This is good but adding the correct part number for each would be a help.

What verified plug-and-play part numbers need correcting?
Send me a PM with the verified working thread link and I'll make the edit.
I certainly may have missed something in the nearly 400 posts to this thread.

 

[RichinRidgewood]

What verified plug-and-play part numbers need correcting?
Send me a PM with the verified working thread link and I'll make the edit.
I certainly may have missed something in the nearly 400 posts to this thread.

Post 382 clearly shows there are at least 3 different part numbers for the modification. I believe there are more p/n’s that cross reference to the before 2019 and after 2019.

 

[-Goose]

I didn't even think this was possible. Thanks!

 

[ElectroBoy]

TL;DR Summary data table and key thus far from this thread.

Note:

• Many who responded that the simple sensor replacement worked did not offer what vehicle it worked in and that is not shown
• Some clarified CA spec or US spec and that is shown
• there were conflicting responses regarding SR5Ps
• I am not marking the SR5Ps as plug-and-play working if they need the harness wiring to make this mod work.

You must turn your brightness dial (the dial to the left of the steering wheel) off of the clicked (highest) setting for this to work and your headlights must be on to experience this mod working.

You may need to adjust your Day mode and Night mode settings, visit https://www.toyota-4runner.org/3315203-post55.html for instructions.

p/n 89121-50020 6-pin sensor for 2016 - 2019 models
p/n 89121-0E060 4-pin sensor for 2020 - ???? models (old p/n 89121-30020 also reported to work)

If you need to fabricate a harness visit https://www.toyota-4runner.org/3435385-post267.html and https://www.toyota-4runner.org/3435546-post270.html for details.

Obviously YMMV.

There’s another feature that’s worthy of mentioning. At least for the 6-pin sensor I have in my 18 ORP. Through the Carista app and a compatible OBDII dongle you can adjust the sensor’s dimming threshold and restoring threshold. It’s kind of subtle but it does work.

 

[onaquest]

TL;DR Summary data table and key thus far from this thread.

Note:

• Many who responded that the simple sensor replacement worked did not offer what vehicle it worked in and that is not shown
• Some clarified CA spec or US spec and that is shown
• there were conflicting responses regarding SR5Ps
• I am not marking the SR5Ps as plug-and-play working if they need the harness wiring to make this mod work.

You must turn your brightness dial (the dial to the left of the steering wheel) off of the clicked (highest) setting for this to work and your headlights must be on to experience this mod working.

You may need to adjust your Day mode and Night mode settings, visit https://www.toyota-4runner.org/3315203-post55.html for instructions.

p/n 89121-50020 6-pin sensor for 2016 - 2019 models
p/n 89121-0E060 4-pin sensor for 2020 - ???? models (old p/n 89121-30020 also reported to work)

If you need to fabricate a harness visit https://www.toyota-4runner.org/3435385-post267.html and https://www.toyota-4runner.org/3435546-post270.html for details.

Obviously YMMV.

I can confirm that the 6 pin 89121-50020 works on my Canadian 2018 TRD Off Road.

Sent from my iPhone using Tapatalk

 

[Drobs]

TL;DR Summary data table and key thus far from this thread.

Note:

• Many who responded that the simple sensor replacement worked did not offer what vehicle it worked in and that is not shown
• Some clarified CA spec or US spec and that is shown
• there were conflicting responses regarding SR5Ps
• I am not marking the SR5Ps as plug-and-play working if they need the harness wiring to make this mod work.

You must turn your brightness dial (the dial to the left of the steering wheel) off of the clicked (highest) setting for this to work and your headlights must be on to experience this mod working.

You may need to adjust your Day mode and Night mode settings, visit https://www.toyota-4runner.org/3315203-post55.html for instructions.

p/n 89121-50020 6-pin sensor for 2016 - 2019 models
p/n 89121-0E060 4-pin sensor for 2020 - ???? models (old p/n 89121-30020 also reported to work)

If you need to fabricate a harness visit https://www.toyota-4runner.org/3435385-post267.html and https://www.toyota-4runner.org/3435546-post270.html for details.

Obviously YMMV.

At least on my non-premium 2019 Off Road, if the headlights are left on and the vehicle is turned off, the headlights will turn off on their own after a short delay as a result of installing the sensor.

Previously I would get a buzzer telling me to turn off my lights as soon as I opened the door after turning off the vehicle with the headlights still on.

I wish other non-OR premium, non-limited, non-pro owners with 2019 and older 4Runners would chime in on this.

 

[CollinJ]

At least on my non-premium 2019 Off Road, if the headlights are left on and the vehicle is turned off, the headlights will turn off on their own after a short delay as a result of installing the sensor.

Previously I would get a buzzer telling me to turn off my lights as soon as I opened the door after turning off the vehicle with the headlights still on.

I wish other non-OR premium, non-limited, non-pro owners with 2019 and older 4Runners would chime in on this.

That’s really weird, my 2018 ORP doesn’t buzz when the lights are on? I typically always leave my lights in the on position when I shut the truck off. I don’t have the light sensor in mine and they shut off after maybe 30-45 seconds or when I hit lock.

 

[Bguerr21]

Sweet!

 

[smeerun]

**runs out to driveway to pull mysterious plug in dash. I'LL BE DAMNED. 6 pins going into a BLANK plug. Okay tOyToA...

I do a lot of driving at night so I am pretty excited about this $5 $8.99 mod. (found a seller in San Diego, CA)

 

[smeerun]

Hey folks! I received my light sensor last week and promptly installed it. I've been driving around with it and it is fantastic!

I made a quick video demonstrating how it works for those who may have questions:

<iframe width="560" height="315" src="https://www.youtube.com/embed/ufbmY2WHoZU" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

 

[Espresso_OI]

I failed on this one - so I ordered a '89121-06020' on ebay, took two weeks to ship from China. They instead delivered an '89121-50020...which I discovered once I had already removed the sensor.

However, for the 2021 Off Road Premium, it's an 8pin sensor? So even if this Ebay seller sent me the correct part, (06020) is not an 8pin sensor and would not have worked?

...27 page thread so I'm sure I missed the proper part number.

 

[JAXJeremy]

Read through a bunch of pages and see where it's not working for the folks with the SR5P..I'm assuming that even though I have the wires in my SR5 that would indicate it won't work on mine either..

 

[LakeRunr]

Read through a bunch of pages and see where it's not working for the folks with the SR5P..I'm assuming that even though I have the wires in my SR5 that would indicate it won't work on mine either..

If you have all of the wires, then it will work for you. My 2018 SR5 didn't have all of the wires, but I added them, and it works!

 

[j-dub]

I failed on this one - so I ordered a '89121-06020' on ebay, took two weeks to ship from China. They instead delivered an '89121-50020...which I discovered once I had already removed the sensor.

However, for the 2021 Off Road Premium, it's an 8pin sensor? So even if this Ebay seller sent me the correct part, (06020) is not an 8pin sensor and would not have worked?

...27 page thread so I'm sure I missed the proper part number.

Just popped off the sensor cover on my 2021 SR5 and I have the 8 pin as you show in that picture, however It really looks like a 4 pin and the second set of 4 holes are smaller and would not accept a pin. From what I gathered we will need the 4 pin as shown here:
2014-2020 Toyota Ambient Light Sensor 89121-0E060 | Toyota Parts

old part number 89121-30020 some on ebay for about $70
Current part number 89121-0E060 about $130

Cool mod but it may be easier to get in the habit of turning on the lights on before you start the 4runner at night...

Jeremy

 

[Espresso_OI]

old part number 89121-30020 some on ebay for about $70
Current part number 89121-0E060 about $130

Cool mod but it may be easier to get in the habit of turning on the lights on before you start the 4runner at night...

Truth - and thanks. One quirk while down this rabbit hole - only found one listing/photo on ebay of that $70 sensor, 0E060, here.
*The photo from that ebay seller (which could be wrong) indicates a two pin sensor for the 0E060

 

[RichinRidgewood]

To complicate matters further, I use an iPhone 11 Pro Max and Apple CarPlay most of the time.
My 2020 4Runner SR5P screen auto dims at dusk often before I turn on my headlights.