disabling DCM / telematics in 2025 Taco

[cepstralspike]

Just FYI, all speakers and hands free microphone are working 100% for on my 2026 SR5, using the Autoharnesshouse kit. The best way to test is by making a phone call, I think.




Given you have a Camry and are posting in a Tacoma forum, it is anyone's guess if yours works the same! But the antenna shorting method will kill the transmission of data, so it will work on any vehicle, if you can locate the DCM.

I'm guessing/hoping that 2025 Tacoma and 2025 Camry have same DCM. My mechanic's first try at AHH bypass install kept the speaker but lost the BT Mic. Tacoma was the only place I found with the kind of detail I was hoping for. I think the antenna loopback/terminator is a more sure solution but a tougher install.

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[JFFRT24]

Pulling the fuse kills the front (right? maybe left?) speaker and the microphone capability. Which is why the AHH bypass is recommended.

....IT JUST KILLED THE MIC on my 2024 TRD OFF Rd.

 

[JoeMongo]

....IT JUST KILLED THE MIC on my 2024 TRD OFF Rd.

"IT" what? You probably know what "IT" is, but we just have to guess, and I don't like what happens when I have to guess.
j.

 

[Calza]

Good evening! I am a recent tacoma owner (bought the truck 2-3 months ago) and very recently found out about the DCM. I was not happy about it so went ahead and bought this harness: https://www.autoharnesshouse.com/store/AHH-DCM77

Has anybody installed this harness? does it work properly?

My truck is a 2026 TRD Off Road, 6-MT. Any tips or instructions on how to get to the DCM module, specially on the 6-mt? Which tools should I get? I want to have everything I need before I start taking things apart.

Thank you!!

 

[maxx075]

Good evening! I am a recent tacoma owner (bought the truck 2-3 months ago) and very recently found out about the DCM. I was not happy about it so went ahead and bought this harness: https://www.autoharnesshouse.com/store/AHH-DCM77

Has anybody installed this harness? does it work properly?

My truck is a 2026 TRD Off Road, 6-MT. Any tips or instructions on how to get to the DCM module, specially on the 6-mt? Which tools should I get? I want to have everything I need before I start taking things apart.

Thank you!!

Not trying to be a dick here (this time), but did you read any of this thread? Every question that you asked is answered in this thread that you commented on. Even though you have a 6-mt, the removal process of the panel to get to the DCM will more than likely be the same.

 

[Calza]

Not trying to be a dick here (this time), but did you read any of this thread? Every question that you asked is answered in this thread that you commented on. Even though you have a 6-mt, the removal process of the panel to get to the DCM will more than likely be the same.

Thank you! yes, I just went through the entire thread right after posting. All good, I think I have the information that I need. Will do the mod next weekend!

 

[fredygump]

After disabling your DCM, does the compass on the dash still work properly?

I posted before that I disabled the DCM, and everything seemed to work fine. But my compass is always off by 60 degrees! Compass adjusts when I turn, so it is getting direction data from somewhere. But I can't find any way to calibrate the compass to make it point in the right direction.

When I disabled the DCM, I left my GPS antenna connected, and I thought I proved that the android auto is still able to use the vehicle GPS antenna. So I assumed that a GPS based compass would still function. (I assume a magnetic compass doesn't work in a steel vehicle...) Alternative is they are using cellular data for the compass?

Please comment about if your compass works or not. And if you know how to calibrate a compass, that would be greatly appreciated.

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