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An analogue steering wheel control interface engineered for various Subaru vehicles, the SWSU3C allows factory steering wheel controls to operate with a compatible aftermarket head unit using a vehicle-specific plug connection that requires no cutting of the factory wiring harness.
The Aerpro SWSU3C is an analogue steering wheel control interface designed for various Subaru vehicles. It includes a harness fitted with a vehicle-specific plug that connects directly into the existing factory wiring in the vehicle without cutting or modifying the factory harness. The SWSU3C is compatible with SW-type patch leads (sold separately) and supports the OEM phone button when connected to a compatible aftermarket Bluetooth head unit. Voice Assistant support is also available; if the steering wheel controls do not include a dedicated Voice Assistant button, the answer button functions as voice support instead, provided the aftermarket head unit and paired phone also support the Voice Assistant feature. Custom button remapping is available and requires a USB-C cable (sold separately).
Installation is simplified when the SWSU3C is paired with the optional Aerpro APP8 Headunit Secondary ISO Harness (sold separately), which connects between the aftermarket head unit and the SWSU3C interface. The aftermarket head unit must be SWC compatible and steering wheel control functions may vary from OEM functions. The SWSU3C is not compatible with listed Subaru models that have factory-fitted navigation head units. The SWSU3C does not suit all Foresters between 2013-2014; some vehicles require the SWSU7C due to factory stereo differences and OEM plug configuration. Use the Aerpro Vehicle Selector to confirm the correct part for your specific vehicle before purchase.
Retains Factory Steering Wheel Controls with Aftermarket Head Unit: The SWSU3C allows the factory steering wheel audio controls to operate with a compatible aftermarket head unit, maintaining hands-on-the-wheel control without requiring the driver to reach for the head unit directly.
Vehicle-Specific Plug - No Wire Cutting Required: The SWSU3C harness is fitted with a vehicle-specific plug engineered to connect directly into the existing factory wiring in the vehicle. No cutting or modification of the factory wiring harness is required, simplifying installation and preserving the factory wiring integrity.
Analogue Interface Type: The SWSU3C uses an analogue interface type, compatible with the steering wheel control signal architecture used in the supported Subaru vehicles.
OEM Phone Button Support: The SWSU3C supports the OEM phone button on the steering wheel when connected to a compatible aftermarket Bluetooth head unit, allowing hands-free call answering and ending from the steering wheel controls.
Voice Assistant Support: Voice Assistant support is available through the SWSU3C. If the steering wheel does not include a dedicated Voice Assistant button, the answer button functions as voice support instead. The aftermarket head unit and paired phone must also support the Voice Assistant feature for this to operate.
Custom Button Remapping Available: The SWSU3C supports optional custom button remapping to customise the steering wheel control button configuration. Remapping requires a USB-C cable (sold separately).
Compatible with Aerpro APP8 Secondary ISO Harness: The SWSU3C is recommended to be installed with the Aerpro APP8 Headunit Secondary ISO Harness (sold separately), which connects between the aftermarket head unit and the SWSU3C interface for a simplified and complete installation.
Not Compatible with Factory Navigation Head Units: The SWSU3C is not compatible with listed Subaru models that have a factory-fitted navigation head unit. Use the Aerpro Vehicle Selector to confirm compatibility with your specific vehicle before purchase.
| Specification | Detail |
|---|---|
| SKU | SWSU3C |
| Brand | Aerpro |
| Compatible Vehicles | Subaru Various Models |
| Interface Type | Analogue |
| Patch Lead Type | SW |
| Phone Button Compatibility | Yes |
| Voice Assistant Support | Yes |
| Reverse Trigger Output | No |
| Park Brake Output | No |
| Speed Pulse Output | No |
| Illumination Output | No |
| Amp Remote Output | No |
| Telephone Mute Output | No |
| OEM Amplified System Retention | No |
| Custom Button Remapping | Yes (USB-C cable required, sold separately) |
| Factory Nav Compatibility | Not compatible with factory navigation head unit models |
| Forester 2013-2014 Note | Not all Foresters 2013-2014 compatible - some require SWSU7C |
| Recommended Accessory | Aerpro APP8 Headunit Secondary ISO Harness (sold separately) |
| SWC Patch Lead | Required (sold separately) |
The SWSU3C is engineered for various Subaru vehicles. It is not compatible with listed Subaru models fitted with factory navigation head units. The SWSU3C does not suit all Subaru Foresters between 2013-2014; some of these vehicles require the SWSU7C due to factory stereo differences and OEM plug configuration. Use the Aerpro Vehicle Selector to confirm the correct part for your specific vehicle before purchase. The aftermarket head unit must be SWC compatible and steering wheel control functions may vary from OEM functions.
Does the SWSU3C require cutting of the factory wiring harness?
No. The SWSU3C harness is fitted with a vehicle-specific plug that connects directly into the existing factory wiring in the vehicle without cutting or modifying the factory harness.
Is a SWC patch lead included with the SWSU3C?
No. A steering wheel control patch lead is required to use the SWSU3C and must be purchased separately. Use the Aerpro Vehicle Selector to confirm the correct patch lead for your vehicle.
Is the SWSU3C compatible with Subaru models that have factory navigation?
No. The SWSU3C is not compatible with listed Subaru models fitted with factory navigation head units. Confirm whether your specific vehicle has factory navigation before purchase.
Does the SWSU3C suit all Subaru Foresters from 2013-2014?
No. The SWSU3C does not suit all Forester models between 2013-2014. Some vehicles in this range require the SWSU7C due to factory stereo differences and OEM plug configuration. Use the Aerpro Vehicle Selector to confirm the correct interface for your specific Forester before purchase.
What is the Aerpro APP8 and is it required?
The Aerpro APP8 is a Headunit Secondary ISO Harness that connects between the aftermarket head unit and the SWSU3C steering wheel control interface. It is recommended for installation but sold separately. Using the APP8 simplifies the wiring connection between the head unit and the SWSU3C interface.
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