Where Is the DCM in a 2016 Toyota Prius?

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 centre dash, under the radio.

Moderate - a dash end panel, the centre cluster finish panel and the radio (or navigation) receiver come out. No airbag work, but do the aux

Where it is

In the centre stack behind the dash, under the radio unit - the same place as the later cars.

How to get to it

Disconnect the negative terminal of the auxiliary (12V) battery first. Then the right-hand dash end finish panel and the centre cluster finish panel come off, the radio (or navigation) receiver comes out with its bracket, and the module unbolts from behind it along with its antenna cord and telephone brackets. The radio and navigation cars are the same basic job - only the trim panels differ.

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 Prius is the one to double-check before you order: Toyota wired Safety Connect differently depending on whether the car has navigation AND on its build date, so two cars of the same model year can differ. Look for the SOS button first, and if you are unsure send us your VIN - we would rather answer a question than process a return. 2021-2022 cars: the AHH-DCM92 fits those built with navigation and/or JBL audio.

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-DCM92 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).