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Crux SWRSU-38B Wiring Interface

Allows you to connect a new car stereo and retain steering wheel controls in select 2008-15 Subaru vehicles

Item # 249SU38B

Crux's SWRSU-38B interface ensures that you can keep the factory steering wheel controls in your Subaru when...

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Crux's SWRSU-38B interface ensures that you can keep the factory steering wheel controls in your Subaru when...

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Item # 249SU38B

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$72.99
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About the Crux SWRSU-38B Wiring Interface

Add a new radio

Crux's SWRSU-38B interface ensures that you can keep the factory steering wheel controls in your Subaru when installing a compatible aftermarket radio. Connect this interface to the wires on your new stereo's wiring harness, and you've covered the power, ground, and factory speaker connections for your new stereo.  

Add a new radio

Crux's SWRSU-38B interface ensures that you can keep the factory steering wheel controls in your Subaru when installing a compatible aftermarket radio. Connect this interface to the wires on your new stereo's wiring harness, and you've covered the power, ground, and factory speaker connections for your new stereo.  

Note: The SWRSU-38B interface allows you to keep your steering wheel controls with radios from Alpine, Blaupunkt, Boss, Clarion, Dual, Jensen, JVC, Kenwood, Pioneer, and Sony. The retained USB port will not work with Apple CarPlay or Android Auto.

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Product highlights:

  • connect a new stereo in select 2008-15 Subaru models
  • retain your steering wheel controls with compatible car stereos
  • retains your vehicle's auxiliary audio input
  • retains USB port (will not work with Apple CarPlay or Android Auto)
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # SWRSU-38B

What's in the box:

  • Radio replacement interface
  • Wiring harness
  • SWC harness
  • Installation Instructions

Customer reviews

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Crux SWRSU-38B Wiring Interface reviews

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7 reviews

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Crux SWRSU-38B Wiring Interface

Leo from Boston MA on 9/18/2019

2010 Subaru Impreza

Verified customer (What's this?)
Verified employee purchase (What's this?)

The codes are incorrect in the instructions, will need to call tech support and ask for correct codes for a 2010 Subaru Impreza.

Pros:

Cons: Incorrect codes in instruction manual for programming radio to work with steering wheel controls.

Crutchfield response on

0 of 0 found this helpful

Crux interface

Crutchfield customer from Deer Creek, IL on 9/2/2019

Verified customer (What's this?)
Verified employee purchase (What's this?)

Would not work with my vehicle like the salesman advised. Tried many times with the assistance of Crutchfield technician but it would not work. Wound up sending it back for a different brand interface. Haven't installed the new interface yet to see if it works.

Pros: None

Cons: Doesnt work as described by salesman with my vrhicle.

Crutchfield response on

0 of 0 found this helpful

Worked with Alpine ILX-650 on 2011 Impreza

Jacob from Holly Springs, NC on 8/23/2019

2011 Subaru Impreza

Verified customer (What's this?)
Verified employee purchase (What's this?)

I was able to keep all of my steering wheel audio controls on my 2011 Subaru Impreza. I installed the Alpine ILX-W650 with this Crux wiring interface. Volume, next/back, mode, and hands-free controls all work. Crutchfield customer support was awesome with helping me diagnose a fuse problem! Highly recommend! Just make sure you set those little toggle switches on the main black module according to the stock head unit brand (Clarion), and whatever brand of after-market head unit you buy.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Crux SWRSU-38B Wiring Interface

Crutchfield customer from Syracuse, NY on 8/19/2019

2011 Subaru Forester

Verified customer (What's this?)
Verified employee purchase (What's this?)

Steering wheel controls didn't work with my '11 Forester XT

Pros:

Cons:

Crutchfield response on 8/21/2019
Our Tech Support team is currently working with this customer to resolve the issue. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team. They can help you solve the problem or set up a return within 60 days of purchase. Lifetime tech support comes with every Crutchfield purchase.

0 of 0 found this helpful

Worked, kind of

Crutchfield customer from Billings, MT on 4/7/2019

2013 Subaru Outback

Verified customer (What's this?)
Verified employee purchase (What's this?)

I got this at a discount while purchasing a new head unit. It claims it will adapt antenna, in-car USB, and in-car AUX. Antenna was the wrong hookup, as I apparently needed a Nissan adapter which Crutchfield support provided at no additional charge when I called them. The AUX adapter was also the incorrect hookup, but Crutchfield tech did not have the correct one available to them, so I had to source my own at additional cost. The USB adapter was correct. The logic unit came with instructions for my car. The dip switch setting provided for my stereo were correct, but the setting for Subaru on my instructions was exactly backwards from the correct one on Crux's website. Wheel controls: Vol +- ok Prev/Next ok "Mode" now acts as "hang up" "voice command", "on-hook", off-hook" no longer function, but we're part of the old factory head unit's modes, so not surprising.

Pros: Volume, track +-, and hang up preserved on wheel controls. Harness was easy to install

Cons: Supplied codes were incorrect, half the included adapters were not correct for my factory stereo.

Crutchfield response on

0 of 0 found this helpful

Crux SWRSU-38B Wiring Interface

Crutchfield customer from Simsbury, CT on 3/17/2019

2015 Subaru Forester

Verified customer (What's this?)
Verified employee purchase (What's this?)

Only the main harness fit the 2015 Forester. The rest of the cables did not fit.

Pros:

Cons:

Crutchfield response on 4/9/2019
We're sorry you had trouble with the CRUX interface. As we stated to Patrick below, our vehicle integration buyer, Darren, has identified the issue and is in touch with CRUX, so they can update the issues. We appreciate the feedback.

0 of 0 found this helpful

Does Not Work With Subaru Vehicle as Advertised

Patrick from Veneta, OR on 3/13/2019

2012 Subaru Impreza

Verified customer (What's this?)
Verified employee purchase (What's this?)

This review is specific to a 2012 Impreza Premium (6 speaker non-nav), factory head unit was a Clarion CM621UB, now upgraded to a Pioneer MVH-210EX. The short story is it simply does not work with the OEM steering wheel controls in any way, shape, or form. The long story is I had multiple calls with tech support and went through two SWRSU-38B interfaces with no success, leaving Crutchfield personnel scratching their heads. Maybe a potential manufacturing issue on the part of Crux? Both units had stickers indicating the same date of manufacture. Also of note, the OEM AUX input adapter provided with the kit is absolutely useless. The connector in the kit was a 20 pin, the OEM connector is a 16 pin. It's likely these issues would be applicable across all Subaru's of this vintage.

Pros: None

Cons: Does not interface with car at all (zero function with OEM SWC) Connector for OEM AUX does not match provided pigtail

Crutchfield response on 4/9/2019
We're sorry you had trouble with the CRUX interface. Our vehicle integration buyer, Darren, has identified the issue and is in touch with CRUX, so they can update the issues. We appreciate the feedback.

2 of 2 found this helpful

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

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More details on the Crux SWRSU-38B Wiring Interface

Stacey B.

Product Research

Features

Radio Replacement Interface: The CRUX SWRSU-38B is a radio replacement interface for select Subaru vehicles. It facilitates the integration of an aftermarket radio and enables retention of specific factory features (such as steering wheel controls) when replacing a factory installed radio in select Subaru vehicles.

Vehicle Compatibility: The CRUX SWRSU-38B radio replacement interface works with the following 2008-2015 Subaru vehicles.

Make Model Year
Subaru Forester 2009-2015
Impreza WRX/STI (without factory navigation) 2008-2014
Legacy 2010-2014
Outback (without factory subwoofer) 2010-2014
XV Crosstreck 2013-2014

Steering Wheel Controls: The CRUX SWRSU-38B also features a steering wheel control output for Alpine, Blaupunkt, Clarion, Dual, Jensen, JVC, Kenwood, Pioneer, Sony, and Soundstream aftermarket head units. The steering wheel control output consists of a right-angle 3.5mm connector and a light blue/yellow wire (use the connection that your aftermarket head unit is outfitted with). The SWRSU-38B interface module will work with any of the listed aftermarket head units, by setting its 8 dip-switches (see owner's manual for appropriate setting).

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