Simpler solution for disabling the DCM telematics - Silencing Antennas

I am intrigued, but also a bit skeptical.

Your 1st post is to tout something that we all in this thread can use?

I will be watching this to see if it is indeed legit.

Forgive my suspicion, been hooked a few times only to be majorly disappointed.

 

Suspicion is fair.
But I usually post on 4runners.com.
And while I researched a way to disconnect the DCM, I came upon this thread.
I was going to try one of the methods posted here but then I discovered that autoharnesshouse.com was producing a bypass harness for the subaru I started harassing them to do the same for toyota.
I sent them the link to the 4runners thread here: https://www.4runners.com/threads/my-dcm-disconnection-odyssey.25104/page-9
In order to demonstrate that there indeed is a large market for such a harness. And then I even suggested that others write them as well as you will see in the thread.
...
A little over a week ago, they emailed me to say the harness was ready so I immediately ordered one.
I just received it.
So... in my absolute joy of having it in hand, I thought it would be nice to let you guys know about the harness as well.
And to show my appreciation to the great responsiveness of the company, I simply wanted to share the news in the hope their investment works out for them.
Check out my posts on 4runners.com, and you will see that this is several months in the making.

Cheers and best of luck to you.

 

Thankyou.

Presently reading thru the 4Runner thread.

 

I see one caveat. The Remote Start from the FOB will not work with these cables. Otherwise, I'd bet all is good to go. Would like to know if there are any markings on that large connector identifying the maker. Would also like to see the wiring positions from the wiring ends.

I'd bet there is a 3-terminal regulator in the pigtail of the large connector - most likely a 7805.

 

Correct.
The remote start will not work.
But in the later models, the only way to get remote start is by allowing Toyota to collect your driving data, which I am sure is shared with nefarious parties like insurance companies even if you say no.
For remote start, you would need an after market option. A $200 dollar one time purchase is way better than a monthly subscription with toyota that demands your personal info.

As for the terminal wiring, i have no reason to doubt what you mentioned.

The reason I bought the harness as opposed to using tiny wires to jump the connectors is simply for ease of connection. It is 100% reversable and I love that.

 

Tiny wires are indeed reversable, actually easier to reverse than to install. The installation is a bit of a problem, especially if you get your 5VDC from the radio.

Once you do whatever one decides you will have no need to reverse the process as the dealer will not know and will not care.

There is a way to get both and that is to remove the SIM from the DCM. This can be done by a good electronic hobbyist, and it too is reversable. The best of both worlds.

 

Autoharness description says Cloud/App remote starter does not work. It does not say that key fob remote will not work. Is the DCM involved with key fob starter?

 

Most definitely, covered in this thread earlier.

 

Am I reading this correctly: my 2019 Limited does not have this module?

 

So…

The white connector looks like the ‘jumper’ for the speaker.

As for the grey connector:
- Are the two black wires the ‘jumpers’ for the microphone?
- What are the red/purple/black wires? What is happening there?

And last - does Bluetooth still work with the stock radio? (Or do I lose all Bluetooth with the DCM?)

TIA

 

Bluetooth will work just fine. It is not affected because it is radio based and not from the dcm.
As far as the jumper positioning? No idea.

 

Thanks - adding to the wish list.

 

Don't believe so; Do you have the SOS button on the center overhead console - that is the surest way to tell if you have the Telematics module aka the DCM.

 

Yes, the small white connector is the speakers- don't even need to unplug from the DCM as the speakers go right through the DCM and still work with the larger grey connector unplugged. That is for those who don't remove the DCM completly.

Another yes to the two longer loops of wires - they are the microphone.
The other three wires are 12VDC and ground, the third is 5VDC to power the microphone.

As has already been mentioned Bluetooth still works out of the radio.

What you do loose is Remote Start from the FOB. That is a function of the DCM.

 

Not many are happy with FOB remote start. The range is so short a distance, it's almost worthless.

 

Three questions I have about this.
First of all, is there any chance that the connectors could back out, and if so, what did you do to hold them in place, other than using the wire ties?
Secondly, where did you place the original connectors?
And thirdly, where did you get the termination caps from?
Great information, btw… so easy, even an ape like me could understand it.

 

Hi there,
Take a look at the photos and you will see retainer cutouts on the adapters so they just clip in place. Not likely to work loose.

This harness connects to the connectors leaving the DCM unplugged. A zip tie to keep from dangling would do the trick.

Termination caps unnecessary since only the DCM is left unplugged.

 

I believe your question is in regard to the original topic of this thread - the disconnection of the DCM antennas, if that is correct that does not work as detailed in the complete early part of this thread.

 

You are correct, Toycoma… I thought I was replying to altitude nerd.
I am new to the forum, and not the most literate in this area.

My training has been in industrial mechanics/machinist/welder.
It’s a pleasure meeting with you all here, and I’ll get better as I go along.
Thanks!