If this is a more complicated version for you and you want a quick and dirty one, just disconnect the fuse marked DCM in the fuse box under the steering wheel. This will kill it's power, however there is a built in battery in the DCM module that will take a few days to die. This does cause the microphone to not work as well, but its an option. I did it when I bought my '21 RAV4 Hybrid over 2 years ago and it hasn't caused more issues than the microphone not working.
this post was submitted on 16 May 2026
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Why does a car need a microphone?
For voice calls with your phone, some cars have voice activated features, etc.
It's all crap I don't need.
My sentiments there. I was wracking my brain trying to find a use case where I would actually need my car to hear me, and I now miss my '86 SAAB 900 SPG
Our 2016 car has voice controls - had it for 3 years before I realized.
Works like shit too.
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So my mom can call me because she's lost, but doesn't want to stop to check her Google maps because she's in a "dangerous part of town" (downtown Seattle).
(My mum's not a bigot btw, she just lived in a village of 1000 people until she was 29 and anywhere with more than 20 people at once makes her anxious. Costco trips also have her on alert like she's part of Seal Team Six)
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Thank you for posting this. These devices are getting out of control. They are marketed as a convenience to the driver, when in actuality they are capturing and selling your location and driving habit information to data brokers and insurance companies. Sometimes dealerships will even add an aftermarket tracking device to their vehicles without telling you. I removed one that I found in a Crosstrek I bought last year. The device I removed was made by iKON Technologies, and is 'intended' to be used for lot management at the dealership. The dealership tried to sell me an overpriced security plan associated with the GPS tracker. I declined. They left it on anyway. What they don't tell you is that iKON Technologies installs them at no cost to the dealership, and that the tracker is used for repossessions and capturing data to be used for targeted marketing or sell to data brokers. Some devices have the ability to inhibit your starter and ignition system like the one in this manual.
Slap that tracker on a car belonging to an employee of the dealership.
How is that in any way legal where you are?
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Important: Even after the modem is removed, if you connect your phone to the car via Bluetooth then the car will use your phone as an internet connection and send all the same telemetry data back to Toyota.
that is so fucking insidious
But one can also disable bluetooth tethering?
Can you use the phone to only allow Bluetooth media but nothing else?
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My wife is worried (and so am I) about getting anything newer than like a 2016 for this reason. I'm glad we're able to rip that shit out of newer cars
Just gonna keep fixing my 19yr old Toyota until I can't.
I've thought about making a business that makes drop in electric kits for popular vehicles. So you could take an older worn out vehicle and refresh it with full electric. It would probably cost $20k or so, but that's much cheaper than a new car.
Yeah, its already a growing industry I have my eye on. I would love to just electrify my gas guzzler.
It's called retrofit. I would love to see the price go down but it's definitely a challenging task.
There are not enough people around that would sink that much money into an old vehicle.
It depends, if you watch Dave's Auto Center people will sink that much into just an engine for an old truck. If fuel prices go up and demand for used evs goes up then I could see it as a solid alternative. I would have to target the most common vehicles that are currently on the road and make universal motors and smaller battery segments so that they could be packaged for different vehicles using the same parts.
Fucking brilliant. We need much more of this--more public awareness of this type of hack.
FYI, toyota puts the part numbers on the connectors if you wanted to DIY this. Corsa Technic and Ballenger Motorsports will probably have the connectors. If not, you can get the shells and pins from Toyota once you know the part numbers.
I did something similar to a 5th gen camaro. It was much easier. Take out the cell modem unit, open the case, pull out a physical hardware pin bridge that connected it to the OnStar unit. Done.
The only thing I lost was an in-dash compass heading.
The modem was 2g so its dead now anyway, I suppose I could put the bridge back and get the compass. I won't though, that takes effort and road signs have directions on them. There is always the sun too.
I think my next car purchase will be contingent on their disabling this for me before purchase. Just sayin
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