Toyota Vehicle - Telematics DCM Bypass kit

Item Number: AHH-DCM77

Disconnecting the Data Communication Module (DCM) on a Toyota vehicle will disconnect the front right speaker and disconnect power from your OEM handsfree microphone. Many customers would like to remove the DCM for security reasons and some vehicles have noted failures in this module causing unnecessary battery drain when the vehicle is not running. We have designed this adapter kit specifically for the purpose of removing the DCM module. These connectors will plug into the connectors that currently plug into the DCM module and retain the factory functions. This kit effectively rewires these vehicles so that they are wired the same as a vehicle that was not shipped with the DCM module.

Most of your vehicles safety features and Navigation options will not be impeded by installing this adapter but you may lose features that depend on communication with Toyota. An example will be the cloud-based/phone app factory remote start. Since this system requires an internet connection with Toyota to communicate the start signal to your vehicle, it will be disabled when that signal path is removed. In addition, Call Toyota functions will not work. Please don't hesitate to contact us if you have specific concerns.

Installation:

DCM Module Location by Vehicle:

Vehicle	DCM Location
Toyota 4Runner	Located to the right of the headunit, between the headunit and the glovebox. Visible from the glovebox cavity.
Toyota Camry	Sandwiched on top of the headunit, approximately 6 inches from the headunit.
Toyota Corolla	Access requires removing the AC controls and center vents. This involves removing the center dash panel and the cover underneath that has the USB ports, as well as the two kick panels that flank the middle channel in the footwells. Radio removal may also be necessary. 2025 Corolla GR diagram/location HERE
Toyota Prius Prime	Located under the radio cavity.
Toyota RAV4	Located behind the lower center instrument panel.
Toyota Sienna	Located in front of the center console, below the radio unit. 2025 Sienna picture HERE Also, a diagram of the location HERE
Toyota Tacoma (2020-2023, 3rd Gen)	Located behind the radio receiver assembly, accessible from behind the glovebox.
Toyota Tacoma (2024-2026, 4th Gen)	Located under the center console box. Remove the console box assembly to access.
Toyota Tundra	2022+ models : Located to the left side of the steering wheel, behind the switch panel near the driver's left knee. 2020-2021 models: Located behind the glovebox.
Lexus IS500	Located behind the instrument cluster
Lexus LC250	Located in center console, directly under the phone holder. Take the shifter off, lift up the panel and You can squeeze your hand in to disconnect the DCM.

1) Find the DCM module (see table above for vehicle-specific locations).
2) Turn off the vehicle and disconnect one pole of the battery if you wish.
3) Disconnect all connectors from the DCM module, including the square white/off-white module and the longer gray connector.
4) Plug in the adapters in this kit.
5) Reassemble everything. Reconnect the battery. Install the DCM fuse (needed for powering the handsfree microphone). Start the vehicle and test!

Purchase:

Price: $90.00

Vehicle Fitment:

(If a known model is not listed, let us know)

Does your vehicle have a DCM? Not all Toyota/Lexus vehicles have a Data Communication Module. The DCM is part of the Safety Connect / Connected Services system. Look for an SOS or Call Toyota button near your rearview mirror or overhead console. If your vehicle does not have this button, it does not have a DCM and does not need this product. Some older Tacoma, Tundra, and Sequoia models were sold without Safety Connect depending on trim level and factory options.

⚠ 2026 RAV4 Notice: The 2026 Toyota RAV4 uses a new connector type that is not compatible with AHH-DCM77 or AHH-DCM92. We are developing a new bypass adapter for this model. Please contact us for updates.

2023-2024 Subaru Solterra
2020-2026 Toyota 4Runner
2021-2022 Toyota Avalon
2020-2026 Toyota bZ4X
2020-2026 Toyota Camry
2020 Toyota Corolla (Late 2020 Production - April 2020 and later)
2021-2026 Toyota Corolla
2022-2026 Toyota Corolla Cross
2023-2026 Toyota Crown
2025-2026 Toyota Crown Signia
2024-2026 Toyota Grand Highlander (including Hybrid)
2020-2026 Toyota Highlander (including Hybrid)
2024-2025 Toyota Land Cruiser
2023-2026 Toyota Prius
2020-2025 Toyota RAV4 (see 2026 notice above)
2020-2026 Toyota Sequoia
2021-2026 Toyota Sienna
2020-2026 Toyota Tacoma
2020-2026 Toyota Tundra
2021-2022 Toyota GR Yaris
2021-2024 Toyota Venza

2023-2026 Lexus ES250 / ES350
2024-2026 Lexus GX550
2022-2025 Lexus GX460
2021-2026 Lexus IS300 / IS350 / IS500
2023-2025 Lexus LC250
2018-2026 Lexus LS500 / LS500H
2022-2026 Lexus NX250 / NX350 / NX350H
2021-2025 Lexus NX300
2020-2025 Lexus RC300 / RC350 / RC F
2020-2024 Lexus RX350 / RX350L / RX450h
2023-2026 Lexus RZ350e / RZ450e
2024-2026 Lexus TX350 / TX500H / TX550H+
2019-2026 Lexus UX200 / UX250H / UX300H