Steering wheel button control adapter for Toyota ACV SWC 42XTY014-0

Steering wheel button control adapter for Toyota ACV SWC 42XTY014-0

Retain the original radio control functions from the steering wheel when replacing the factory radio with an aftermarket unit. Depending on vehicle equipment, the range of functions and the software of the newly installed radio, some functions may be limited or replaced by others. Compare the displayed harness connectors with the connectors in your vehicle and ensure they match both technically and visually. Check whether any of the listed OEM head units were originally installed. Before final installation, verify vehicle functionality, system settings and correct operation of the steering wheel control (SWC).

Intended for vehicles

• Toyota Aygo X (AB7) (04/2022 -> 2025) - original OEM head unit.
• Toyota Camry (XV70) (03/2019 -> 04/2021) - original OEM head unit.
• Toyota Camry (XV70) (04/2021 -> 09/2021) - original OEM head unit.
• Toyota Hilux (AN1P) (10/2020 -> 2025) - original OEM head unit.
• Toyota Yaris (XP21) (09/2020 -> 2025) - original OEM head unit.

CAN Bus information

Connectors and power:

• Connectors: 28-pin / 34-pin / 10-pin Toyota.
• OEM steering wheel control connection: 3.5 mm jack or spare wire to the SWC input of the head unit.
• OEM AUX connection: 3.5 mm jack (male).
• OEM reverse camera connection: RCA (yellow) – camera input.
• Purple/white wire: +12 V reverse signal.

Settings:

• Set DIP switches according to the aftermarket head unit manufacturer (see BDA / radio manual).

Vehicle compatibility:

• Analog steering wheel control (SWC).
• Support for OEM reverse camera (see wiring below).

Special cases and warnings:

• For vehicles with different pin assignments or with OEM navigation, always measure the pinout before connecting to avoid errors or damage.
• OEM camera power +6 V: verify correct assignment with the OEM head unit before installation.
• Video (+/-): verify correct assignment with the OEM head unit before installation.
• USB and AUX: verify correct assignment with the OEM head unit before installation.

Important additional information

• Compatible with aftermarket head units that have an analog input for steering wheel controls.
• To fully activate the adapter, it is necessary to order a patch lead for the specific brand of head unit.

General installation instructions

Pre-installation checks:

1. Check all vehicle control functions and settings with the original OEM head unit installed.
2. Disconnect the original radio (OEM HU) with power off.
3. Check all interface connections to ensure they are correctly connected – with power off.

Connections and wiring sequence:

1. Set and check the hardware (HW) configuration of the interface – with power off.
2. Check the configuration of the connecting cable to the HU – with power off.
3. Connect the cable to the HU according to the aftermarket device instructions.
4. Connect the remaining wires according to the device instructions.
5. Connect the entire installation to the vehicle – connect the main power supply as the last step.
6. Perform software configuration of the interface according to the product description or manual.
7. Configure the aftermarket HU (steering wheel control, camera, handsfree, antenna power, etc.).
8. Perform a functional test of the steering wheel control and communication with the vehicle.

Changing the configuration of the interface and HU cable:

• Make all changes with power off.
• After changes, repeat steps 5 to 8 listed above.

In case of interface or vehicle system failure:

• Reinstall the original OEM head unit.
• Start the original unit.
• Initiate CAN Bus system shutdown.
• Check the HW configuration of the interface.
• After CAN Bus shutdown, repeat steps 5 and 6 listed above.

When modifying wiring or cable routing:

• Wiring and modifications may only be performed by professionally trained personnel.
• All changes must be verified in terms of manufacturer approval or impact on the vehicle warranty before connecting.
• All modifications must be verified by measurement and comparison with the vehicle wiring diagram before connecting.
• Modifications are performed at your own risk, without guarantee of functionality.
• Modifications are performed at your own risk, without guarantee against damage to the vehicle, device or interface.
• Pre-modified harnesses may lead to loss of product warranty.

Product comments

Evaluation

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• Mounting material and ACV reduction