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PAC RP4.2-HY11 Wiring Interface

Connect a new car stereo and retain steering wheel controls, aux input, USB port, and backup cam in select 2011-2016 Hyundai vehicles

Item # 541RP4HY11

Installing a new car stereo can often mean losing your vehicle's steering wheel audio controls and other factory...

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Installing a new car stereo can often mean losing your vehicle's steering wheel audio controls and other factory...

Item # 541RP4HY11

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About the PAC RP4.2-HY11 Wiring Interface

Upgrade the radio in your Hyundai

Installing a new car stereo can often mean losing your vehicle's steering wheel audio controls and other factory features. PAC's RP4.2-HY11 wiring interface solves this problem, allowing you to install a new receiver in your Hyundai while retaining your steering wheel controls, aux input, backup cam, and USB port. The interface also supplies the connections you need to install a navigation receiver. Warranty: 1 year.

Upgrade the radio in your Hyundai

Installing a new car stereo can often mean losing your vehicle's steering wheel audio controls and other factory features. PAC's RP4.2-HY11 wiring interface solves this problem, allowing you to install a new receiver in your Hyundai while retaining your steering wheel controls, aux input, backup cam, and USB port. The interface also supplies the connections you need to install a navigation receiver. Warranty: 1 year.

Important Note: This wiring interface will only retain steering wheel audio controls with car stereos made by Alpine, JVC, Kenwood, Clarion, Pioneer, Sony, Fusion, Advent, Boyo, Dual, Lightning Audio, Rockford Fosgate, and Visteon.

Installation Notes:  In the 2013-15 Genesis Coupe and 2011-14 Sonata, you will lose the ability to set the factory clock, and your vehicle's external screen will power up and display "Aux." In the 2013-15 Azera, your vehicle's external screen will power up and display "Hyundai" (climate control display will be retained).

READ LESS

What's in the box:

  • Radio replacement/SWC interface module (for Hyundai)
  • Wiring harness (RP4.2-HY11-HAR)
  • Instructions

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PAC RP4.2-HY11 Wiring Interface reviews

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PAC RP4.2-HY11 Wiring Interface

Crutchfield customer from Columbia, MD on 6/30/2019

2013 Hyundai Sonata GLS

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

The wiring harness worked great.

Pros: No issues, the unit worked without adjustments.

Cons:

Crutchfield response on

0 of 0 found this helpful

PAC RP4.2-HY11 Wiring Interface

Peter from Durham, NC on 6/21/2019

2011 Hyundai Elantra

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

Everything just worked for my 2011 Hyundai Elantra, even the steering wheel controls. I just removed the dash and plugged everything in, def impressed.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Great wiring interface

Nathan from Tampa, FL on 5/15/2019

2013 Hyundai Elantra GT

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

Was able to retain steering wheel controls and I really like the option to be able to program each control 2 different controls, a short press and a long press. Programming is simple and easy. Only complaint and I can confirm is factory aux does not work, factory usb does though. I don't really care though as I don't even use aux ever. The wiring was simple after reading instructions. This is way better than the metra axxess bull crap

Pros: Retains swc and factory usb Comes pre programmed but easy to re program for your own setup Wiring was easy

Cons: Does not retain factory aux

Crutchfield response on

0 of 0 found this helpful

USB Not Functional

Sara from Mesa, AZ on 4/27/2019

2011 Hyundai Sonata GLS

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

I primarily purchased this rather expensive wiring harness to retain the factory USB port in my 2011 sonata. While it does charge my phone, it does not pass through any data, so using it with Android Auto required instead running a USB cable through the glove box.

Pros: Steering wheel controls retained, ease of installation

Cons: USB supplies power but no data. This is a huge disappointment.

Crutchfield response on

0 of 0 found this helpful

Great add on to keep steering wheel switches

Crutchfield customer from Birmingham, AL on 3/28/2019

2013 Hyundai Elantra GT

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

Gave me all of my steering wheel factory buttons on the new radio.

Pros: Keep all the original equipment buttons for radio

Cons: None

Crutchfield response on

0 of 0 found this helpful

PAC RP4.2-HY11 Wiring Interface

John from Orlando, FL on 2/17/2019

2015 Hyundai Genesis

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

Allowed me to retain my steering wheel controls, factory USB, and plugged right in to my factory harness. I am sure it would have allowed me to retain the factory AUX input as well, however the added adapter required stuck too far out of the back of the radio. I may look for an L-shaped adapter and try again. The unit worked for my 2015 Genesis Coupe right out of the box. I am sure that I could have made the harness much more user friendly by removing the unnecessary wires and connectors but was leery about cutting anything in case any conductors were looped through somehow. I just pulled, pushed, and skinned my knuckles until I was able to work everything into the dash.

Pros: Does the job

Cons: Wires, wires everywhere! It would be nice if wires and harnesses would be clearly marked as okay to remove if unneeded in a given install.

Crutchfield response on

3 of 3 found this helpful

13' Elantra pac module

Daniel from Gilbert, AZ on 2/2/2019

2013 Hyundai Elantra

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

Works good, couldn't for the life of me keep the stock usb function but everything else works great. Also it's kinda big so you gotta get creative when tucking the module behind a double din. Don't forget to update the firmware as everyone has stated, it won't work if you don't

Pros: Works mostly as described

Cons: Having to update firmware, usb didn't work

Crutchfield response on

1 of 1 found this helpful

PAC RP4.2-HY11 Wiring Interface

Crutchfield customer from Fishers, IN on 1/10/2019

2011 Hyundai Elantra

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

the interface recieves/acknowleges all steering wheel contorls. However, either the device does not communicate all the commands correctly to the head-unit, or the head-unit does not interpret all the commands from the interface. Either way, the description said all steering wheel controls would be retained

Pros: inexpensive way to keep most (all?) of your steering wheel commands

Cons: might not keep all your steering wheel commands

Crutchfield response on

0 of 0 found this helpful

PAC RP4.2-HY11 Wiring Interface

Scott from Herndon, VA on 1/4/2019

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

Two years ago I decided to install an aftermarket head unit in my 2011 Hyundai Sonata. I picked out my HU and it said I needed a SWC adapter + a module to retain my factory amplifier and recommended ones from Axxess/Metra. I bought all of the parts and did the install. Long story short, it didn't work. No sound, and only a few of the steering wheel buttons would work. They agreed it must have been DOA so they sent me another set. Same issues. I then drove to Charlottesville, VA so the Crutchfield store could take a look and they too could not make the parts from Meta work. They even ordered a 3rd one and had Metra apply custom FW on it, still nothing. I did research and found this part (the PAC RP4.2-HY11) and asked if we could try it. At the time, Crutchfield did not sell it so I had to buy it somewhere else. They installed this PAC adapter and everything worked on the FIRST TRY! Fast forward two years and I'm thinking on ditching my rear speakers and installing a set of active components in the front. I plugged the device into my PC to change the fader settings and all 3 of my PC's would not work with it anymore. Somehow in the process I also reset the steering wheel settings and all buttons got mixed up. No matter what I did to reset or reprogram it, it was toast. So I went on Crutchfield's website and yay they sell it now! I ordered this same part again, did the FW update and it was plug and play! I'm still not sure why Crutchfield lists this as not compatible, but it works!

Pros: This PAC device works perfectly with 2011 Hyundai Sonata Limited even though Crutchfield says its not compatible and the Axxess/Metra device they say is compatible did not work, even after trying 3 of them.

Cons: You can't adjust the front/rear fader from head unit, but can with a PC app. Also if you want to change the steering wheel control mappings to anything other then the default, its nearly impossible. Considering they already have a PC app that interfaces with it, why can't they be programmed via a GUI on the PC app?

Crutchfield response on 2/19/2019
We're sorry about the troubles with your installation, Scott. Thanks to Scott's review, one of our vehicle database gurus, Allen, verified and updated the information on this Hyundai to include the PAC integration harness.

2 of 2 found this helpful

PAC RP4.2-HY11 Wiring Interface

Crutchfield customer from Cibolo, TX on 11/12/2018

2012 Hyundai Elantra

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

The installer had to download an update so the steering wheel hand controls would work. We should have had something with the product giving us a heads up on needing to download an update.

Pros:

Cons:

Crutchfield response on

2 of 2 found this helpful

PAC RP4.2-HY11 Wiring Interface

Crutchfield customer from Orlando, FL on 11/4/2018

2013 Hyundai Sonata GLS

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

easy to install, had no problems. everything works perfectly

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Easy install

Russell from Los Lunas, NM on 9/3/2018

2013 Hyundai Elantra

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

Plug and play

Pros: Time saver

Cons: None

Crutchfield response on

0 of 0 found this helpful

So nice to use the steering controls

Eric from Alta Loma, CA on 8/20/2018

2013 Hyundai Santa Fe Sport

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

This is so nice you can use the factory buttons. 2013 Santa Fe Sport

Pros: Easy Instructions

Cons: I wish I read the instructions first. It would have made it quicker :)

Crutchfield response on

0 of 0 found this helpful

Interface works fine

Bob from Temecula , CA on 7/14/2018

2011 Hyundai Elantra

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

This was the interface recommended by my installer. Works flawlessly.

Pros: easy and well documented install

Cons: none

Crutchfield response on

0 of 0 found this helpful

after firmware update, works perfectly

kenneth from krum, tx on 5/27/2018

2016 Hyundai Elantra

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

this kit, along with the faceplate, made the radio install very smooth. i soldered/heat shrinked all the connections, except for the 2 connections to the obd port. without the help of the techs at Crutchfield, it would have taken me a lot longer, and possibly i would still be trying to get some of the features to work. the one problem i did have was with the swc module, RP4.2-HY11. the first one was dead. the second one would not interface with the steering wheel controls. when i got the third one, i called radio pro, and spoke to a tech there. i was told that the firmware needed to be updated. their website has the firmware, and the app needed to install it. very suspicious, the firmware update is 2016, one would think that the module made 2 years later would have the update. looking at the firmware updates. there is an update for virtually EVERY module they have, i think what they get is a basic module, and it is up to the owner/installer to update the firmware. after updating, it now works perfectly. i passed this info on to the last person i spoke to at crutchfield.

Pros: made the install easy. factory swc work perfect.

Cons: module firmware MUST be updated

Crutchfield response on

1 of 1 found this helpful

PAC RP4.2-HY11 Wiring Interface

Mike from Lancaster, CA on 2/2/2018

2014 Hyundai Elantra

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

Had problem initially with control box burning out but crutchfield awesome customer support saves the day. Unit allows retention of factory installed features like usb and aux connections

Pros: Allows retention of factory features

Cons: Installation can be very involved

Crutchfield response on

0 of 0 found this helpful

High Hopes, But No Love Here

KC from Sterling, VA on 11/5/2017

2015 Hyundai Santa Fe

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

This does NOT work with my 2015 Santa Fe steering wheel controls. I had it professionally installed and programmed, and it worked for 1 drive home. The next morning it had lost all of it's programming and none of my steering wheel controls worked. Took it back to the installer, double checked all the wires, reprogrammed it again, same results, worked once and lost it's mind. Crutchfield is awesome, and sent me a second unit, thinking there was a problem with the first one. Had the second one installed, and same results as the first unit. Returned it for the Maestro ADS-MSW, and will review it once it has been installed next week.

Pros: Full integration with my factory backup camera Full integration with my factory USB and AUX

Cons: Does not work properly Loses settings, fails to stay programmed

Crutchfield response on

1 of 1 found this helpful

easy to use

Michael from Richmond, VA on 10/16/2017

2013 Hyundai Elantra

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

Easy to hook up Blaupunkt San Jose to 2013 Hyundai Elantra

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

PAC RP4.2-HY11 Wiring Interface

Daniel from Austin, TX on 9/27/2017

2012 Hyundai Elantra

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

never worked. even had a 2nd box sent to me, which also, same issue, never worked with my SWC. pretty disappointed. i liked the radio, and everything, just dont realize how much you use your SWC until you dont have them.

Pros:

Cons:

Crutchfield response on 9/27/2017
Daniel contacted our Customer Support team and set up a return. Purchases from Crutchfield can be returned or exchanged within 60 days.

0 of 0 found this helpful

PAC RP4.2-HY11 Wiring Interface

Joshua from Gilroy, CA on 9/17/2017

2014 Hyundai Elantra

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

Great product

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Slow But It Works

Kyle from Surprise, AZ on 8/27/2017

2014 Hyundai Elantra GT

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

All of my steering wheel controls work but they seem slow and almost unresponsive sometimes. But overall it works well.

Pros: Fairly easy to install, works well with kenwood deck

Cons: Slow and unresponsive sometimes

Crutchfield response on

1 of 2 found this helpful

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Pros:

Cons:

Crutchfield response

<< >>

More details on the PAC RP4.2-HY11 Wiring Interface

Stacey B.

Product Research

Features

Vehicle Compatibility: The PAC RadioPro4 RP4.2-HY11 allows you to replace the factory radio with an aftermarket head unit, while retaining a variety of factory equipped features in select 2011-2015 Hyundai vehicles.

Make Model Year
Hyundai Accent 2011-2015
Azera 2013-2015
Elantra 2011-2015
Genesis Coupe 2013-2015
Santa Fe 2013-2015
Sonata 2011-2015
Tucson 2012-2015

Vehicle Notes:

  • In the 2013-2015 Genesis Coupe and 2011-2014 Sonata, the factory external screen will power up and display "Aux", plus you will lose the ability to set the factory clock.
  • In the 2013-2015 Azera, the factory external screen will power up and display "Hyundai" (The climate control display will be retained).
  • Vehicles equipped with factory navigation are not compatible.
  • Does not retain Blue Link.
  • The PAC RPA-SPDIF (541RPSPDIF, sold separately) is needed in vehicles equipped with a factory amplified audio system.

Built-In Pre-Programmed SWC: The interface comes pre-programmed for all of the vehicle's factory SWC functions and does not require programming, unless you wish to re-assign the SWC functions to different buttons. The SWC functions can be easily programmed (see owner's manual). The interface retains programming even if your vehicle's battery is disconnected. The SWC harness contains a Blue/Yellow wire and a 3.5mm connector. You will only use one of the connectors, based on your type of aftermarket radio.

  • Blue/Yellow Wire: The Blue/Yellow wire supports Kenwood, newer JVC, and Blaupunkt aftermarket head units.
  • 3.5mm Jack: The 3.5mm jack supports Alpine, Jensen, Older JVC, Clarion, Pioneer, Sony, and Dual radios.
Note: Not compatible with Soundstream head units.

Retains Factory Aux Input: The PAC RadioPro4 RP4.2-HY11 features a set of stereo RCA jacks which plug into your aftermarket head unit's rear-panel Aux input in order to retain your vehicle's factory auxiliary input. A RCA-to-3.5mm adapter (sold separately) may be required depending on your aftermarket radio's aux input connection.

Factory Retained USB Port: The RadioPro4 RP4.2-HY11 will retain your vehicle's factory USB port using the integrated USB cable which plugs into your aftermarket head unit's rear-panel USB input. The retained factory USB port is not compatible with Apple CarPlay or Android Auto.

Factory Backup Camera Retention: The interface also retains your vehicle's factory back-up camera through its composite video jack that plugs into the camera input on the back of your new aftermarket stereo.

10A Accessory Output: There is no 12-volt accessory wire in the factory harness, so PAC's RP4.2-HY11 provides a data controlled 12V/10A switched accessory output (red wire). This prevents you from having to run an accessory wire to the fuse box or underneath the steering column when installing an aftermarket radio.

Navigation Outputs: The PAC radio replacement interface also provides a VSS (vehicle speed sense), Parking Brake, and a Reverse Gear output to make installing an aftermarket navigation head unit simpler and less time consuming.

Programmable 12V Output: The red/white wire on the interface can be programmed via the RadioPRO app to do a pulsed or latched 12v output which can then be assigned to any of the vehicle's factory SWC buttons. When assigned, the factory SWC button will activate the pulsed or latched output to control external accessories.

Wiring Connection Chart: The included wiring harnesses features the following hardwire connections.

14-Pin Connector
Yellow +12 Volt Constant
Black Ground
White Male RCA Left Aux
Red Male RCA Right Aux
Black Ground
13-Pin Connector
Blue Power Antenna
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -
20-Pin Connector
Blue/White Amp Turn-On
Orange/White Illumination
Light Green Parking Brake Detection (-)
Pink VSS Output
Violet/White Reverse Output (+)
Red/White +12V Programmable Output
White/Black HS-CAN Input (-)
White/Red HS-CAN Input (+)
Male 3.5mm Jack SWC Output
Blue/Yellow SWC Output
4-Pin Connector
Red +12V Accessory Output (10A)
5-Pin Connector
Yellow Male RCA Composite Video (Backup Camera)

RadioPRO App: PAC offers a Windows compatible RadioPRO App software program to help you configure the interface. Use of the RadioPRO App allows you to do the following.

  • Red/White wire output behavior
  • Aftermarket radio Parking Brake Sequencing
  • Update Product Firmware
  • Read Firmware/Hardware Versions
  • Access Product User Manuals
Note: The interface must be connected to the vehicle and your Windows laptop when using the RadioPRO App.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
This was the wiring kit I needed to keep my steering wheel functions in tact with my radio [ Devon Ray  Apr 16, 2019 ]
A
Retain steering control [ Edgar  Dec 11, 2018 ]
A
Included in package [ DAVID  Dec 03, 2018 ]
A
I don't want lose streeing wheel control for radio and the factory USB then all gone waste. [ Todd  Nov 29, 2018 ]
A
Allows factory steering wheel controls. [ P  Nov 27, 2018 ]
A
My car has factory Steering Wheel control, a backup camera, a front AUX Jack and USB Port etc.. With out this, you will lose all of those! Plain and simple, you will have to butcher the factory wiring, and get your hands on a wiring diagram for your specific model and radio to figure out what goes where... Thanks, but no thanks.. I have used these in many installs and it is easily tucked away and keeps your car working the way you are used to but with the upgrade to the radio. [ John  Apr 20, 2018 ]
A
In order to simplify the installation process. [ Yasmany Armas  Mar 02, 2018 ]
A
USB/Aux retention [ Adam  Jan 24, 2018 ]
A
I wanted to keep Bluetooth and USB accessibility with my new head unit so this was required for my car model [ Saul  Jan 23, 2018 ]
A
maintain connection & provide future expansion [ Michael  Jan 19, 2018 ]
A
Maintain factory audio options! [ Tomas  Aug 04, 2017 ]
SHOW MORESHOW LESS

3 questions already asked

Q
Does the USB retention work with Carplay?
[ Mike9  Apr 05, 2019 ]
3 answers
A
It did passed power to the USB port but not data, so no for Carplay or Android Auto.
[ Sara  Apr 27, 2019 ]
A
Mine did not in my 2013 Elantra.
[ Billyjoe  Apr 06, 2019 ]
A
I haven't tried it so I am unaware if it dose or not
[ jesse  Apr 05, 2019 ]
Q
How to use this with aftermarket amps?
[ Brent  Jul 13, 2017 ]
1 answer
A
The ability to retain steering wheel controls and other functions with aftermarket receivers will be determined by the receiver you are using and the vehicle you have. For full information on this type of integration (including the parts you will need) please contact an Advisor by phone (1-800-324-9695) or online chat.
[ Kenny  Jul 13, 2017 ]  Staff

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