Where Is the DCM in a 2021 Toyota Sienna?

The DCM — the Data Communication Module, part of Safety Connect / Connected Services — is the module our bypass harness plugs into. Finding it is the only tricky part of the install. Pick your vehicle and we will show you where it lives and what has to come apart to reach it.

Not sure whether your vehicle even has one? Look for an SOS or Call Toyota button near the rear-view mirror or in the overhead console. No button means no DCM — and no need for the bypass harness.

Short answer

Behind the lower centre dash, at the front of the console.

Hard - the factory procedure involves removing an airbag assembly. Worth handing to a shop unless you are confident.

What it looks like in the car

Photos from vehicles we and our customers have actually had apart.

DCM location photo - Toyota Sienna — The DCM itself, out of the vehicle.

Where it is

Behind the lower centre dash, just right of the steering column at the front of the centre console.

How to get to it

Toyota calls for disconnecting the negative battery terminal first. Then takes off the boot floor mat, the dash side panel, the lower dash pad, the under-dash cover, the lower dash finish panel. NOTE: this procedure involves removing an airbag assembly - disconnect the battery and follow the airbag precautions in a service manual, or have a shop do it.

No SOS button near the rear-view mirror or overhead console means the vehicle was built without Safety Connect - there is no DCM to bypass and this kit is not needed.

The bypass harness for this vehicle

Our bypass kit disconnects the DCM without losing your front right speaker or the hands-free Bluetooth microphone — the two things that stop working if you simply unplug the module.

See the AHH-DCM77 DCM bypass harness »

Still cannot find it, or your trim looks different? Email us with your year, model, and a photo of your dash and we will point you straight at it.

Vehicles we have mapped so far

We are adding vehicles as we confirm them. Do not see yours? Ask us — that is how this list grows.

Looking for the harness itself? AHH-DCM77 (2020 and newer) — AHH-DCM92 (2016-2020).