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Pioneer CD-IU51

Connect your iPod® or iPhone® to select Pioneer in-dash stereos

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  • Pioneer CD-IU51

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Our take on the Pioneer CD-IU51

by Ken Nail
Pioneer

Why would I need an iPod® adapter?

An iPod adapter allows you to connect your iPod to your car stereo, then access your playlists with your stereo's controls - a great idea for several reasons. One, you can scroll through your song titles on your stereo's larger display, instead of squinting down at your iPod. Two, you can route the adapter cable to your glove compartment or center console, so your iPod stays safely out of sight. Three, the iPod adapter keeps your iPod fully charged, so it's ready to rock when you leave your car. And last of all, some adapters bypass your iPod's internal digital-to-analog converter, using your stereo's superior DAC to turn your files back into music.

Why worry about carrying your iPod cable with you when you head out to the car? Use this CD-iU51 cable to connect your iPod to your Pioneer car stereo and leave your original iPod USB cable in the house. And you'll enjoy optimal charging speed when your iPod is connected, since this cable will work with newer Pioneer receivers with 1-amp USB outputs. This cable only supports audio playback — it will not transfer video to your receiver. Warranty: 1 year.

 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
General
Adapter Type
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iPod audio in w/ iPod control
Vehicle Specific
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No
Brand Specific
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Pioneer
Parts Warranty
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1 Year
Labor Warranty
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1 Year
iPod Compatibility
Full-Size
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Classic/5Gen
Nano
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6/5/4/3/2/1
Touch
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4/3/2/1
Mini
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No
iPhone
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4S/4/3GS/3G/2G
Product Research
What's in the box?

Download owner's manual

  • 22.5" USB/iPod interface cable (with USB type-A plug on one end and a standard iPod dock connector on the other end)
  • "For European model" note

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Overview: The Pioneer CD-IU51 is an interface cable that allows you to plug your iPod/iPhone into a Pioneer head unit with a USB input for audio playback, control, and charging. It is virtually the same USB-to-iPod cable as the one that comes with your iPod/iPhone, allowing you to leave your original cable at home.

Compatibility: The CD-IU51 cable is compatible with Pioneer head units that feature a USB one-wire iPod/iPhone direct input.

iPod Compatibility: The Pioneer CD-IU51 iPod/iPhone Audio Direct Cable is "Made for iPod/iPhone" compatible and supports the following iPod/iPhone model functions when connected to a compatible Pioneer head unit (as of 3/27/2013):

Apple Device Generation Tested Version Media Type Control Type Display Type Pandora app Charge
Audio Video Head Unit iPod/iPhone App mode Artist/Song Text Track Info
iPhone 2G 3.1.3 Y N Y Y Y Y Y Y Y
3G 4.2.1 Y N Y Y Y Y Y Y Y
3GS 5.1.1 Y N Y Y Y Y Y Y Y
4 7.0 Y N Y Y Y Y Y Y Y
4S 7.0 Y N Y Y Y Y Y Y Y
5* 7.0 Y N Y Y Y Y Y Y Y
5C* 7.0 Y N Y Y Y Y Y Y Y
5S* 7.0 Y N Y Y Y Y Y Y Y
touch 1st 2.2.1 Y N Y Y N Y Y N Y
2nd 4.2.1 Y N Y Y N Y Y N Y
3rd 5.1.1 Y N Y Y N Y Y N Y
4th 6.1.3 Y N Y Y N Y Y N Y
5th* 7.0 Y N Y Y N Y Y N Y
nano 1st 1.3.1 Y N Y N N Y Y N Y
2nd 1.1.3 Y N Y Y N Y Y N Y
3rd 1.1.3 Y N Y Y N Y Y N Y
4th 1.0.4 Y N Y Y N Y Y N Y
5th 1.0.2 Y N Y Y N Y Y N Y
6th 1.2 PC Y N Y Y N Y Y N Y
7th* 1.2 Y N Y Y N Y Y N Y
classic 80GB 1.1.2 Y N Y Y N Y Y N Y
120GB 2.0.1 Y N Y Y N Y Y N Y
160GB 2.0.4 Y N Y Y N Y Y N Y
video 5th 1.3 Y N Y N N Y Y N Y
iPad 1 5.1.1 Y N Y Y Y Y Y Y N
2 7.0 Y N Y Y Y Y Y Y N
3 7.0 Y N Y Y Y Y Y Y N
4* 7.0 Y N Y Y Y Y Y Y N
mini* 7.0 Y N Y Y Y Y Y Y N
Note:
  • *Requires Apple Lightning to 30-pin Adapter cable (472LTN230P, sold separately).
  • Apple iPod/iPhone software updates may change functionality results. If you download a newer software version, you may need to reset the head unit and your iPod/iPhone to regain functionality. If this doesn't work, you may need to wait until a newer software update is available.
 
See All Car Stereos that work with this item
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Pioneer CD-IU51 Reviews

Average Customer Review:

12 people say:

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5 out of 5

Pioneer CD-IU51

Written By Anonymous, Ridgeway, Wisconsin on Wednesday, February 26, 2014
Crutchfield Customer Review (What's this?)
 
Works great with my Pioneer receiver. It's pretty cool to just plug in my Ipod and throw it out of site and have all the controls at my receiver.
Pros:
Easy install and use.
Cons:
None.
Was this review helpful?    Yes | No
 
3 out of 5

A little short

Written By Matt, Milwaukee, WI on Tuesday, December 31, 2013
Crutchfield Customer Review (What's this?)
 
Works good, but its only about 18" long
Pros:
High quality
Cons:
too short
Was this review helpful?    Yes | No
 
5 out of 5

2thumbs up

Written By OGragga, Guam on Tuesday, September 17, 2013
Crutchfield Customer Review (What's this?)
 
Works great. Very convenient
Pros:
Great product
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Pioneer CD-IU51

Written By Joe, Suwanee,GA on Monday, September 16, 2013
Crutchfield Customer Review (What's this?)
 
This patch cord is a must have. You will experience your music from your iPhone or iPad like you never have. The clarity is incredible. Huge improvement over using a mini headphone patch cord. No more hiss just clear digital sent sound to your deck.
Pros:
It works great
Cons:
There aren't any
Was this review helpful?    Yes | No
 
5 out of 5

CD-IU51

Written By Al, WA on Tuesday, August 20, 2013
Crutchfield Customer Review (What's this?)
 
Keeps my regular USB cable in the house were it belongs. The thickness of gauge & insulation is ideal for transfer of sound quality & protection.
Pros:
Love the length. I was able to route & velcro the cord down into my glove compartment.
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Nice, but not absolutly needed...

Written By Steven T. ..., Irving, Texas on Thursday, June 06, 2013
Crutchfield Customer Review (What's this?)
 
This is a nice addition, if you have the money, but it is not absolulty needed for the install. You could probably just use your standard cable, that comes with the IPOD...
2 out of 2 people found this helpful
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5 out of 5

Pioneer CD-IU51

Written By JBK, Pittsville, Md on Wednesday, June 05, 2013
Crutchfield Customer Review (What's this?)
 
Cable works great for ipod hookup - just the right length
Pros:
Works perfect
Cons:
None
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4 out of 5

Good quality cord

Written By Good cord, Whitehouse,tx on Saturday, March 09, 2013
Crutchfield Customer Review (What's this?)
 
Good thick cord but a little short. It has a nice dust cover
Pros:
Dust cover and thick cord
Cons:
Short cord
Was this review helpful?    Yes | No
 
4 out of 5

Pioneer CD-IU51

Written By Morgan, Mount Vernon, NY on Saturday, March 09, 2013
Crutchfield Customer Review (What's this?)
 
Good product.works well
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4 out of 5

Pioneer CD-IU51

Written By John C, Wellesley, MA on Monday, December 31, 2012
Crutchfield Customer Review (What's this?)
 
After reading the other reviews, I was a little nervous that the cable would be shorter than the advertised 22.5". When I received the cable, it did seem shorter than 22.5" but when I measured it, it actually IS 22.5". Luckily, the head unit I purchased came with a USB extension cable which I ran from the radio to the glove box, then I just plugged in this cable into the extension. It is a very thick, sturdy cable which may be the reason that it appears shorter than 22.5". Works great. I feel like it is a little overpriced which is why I'm giving it 4 stars.
Pros:
Very good quality cable.
Cons:
Make sure you pull out a tape measure and see how long 22.5" really is and see if it will be long enough for your planned application.
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2 out of 5

Short iPod/iPhone usb cord

Written By Anonymous, Bakersfield, CA on Monday, September 17, 2012
Crutchfield Customer Review (What's this?)
 
Cord works very well but it is at least 1 foot shorter than really what it should be for the glove compartment hookup needed.
1 out of 1 people found this helpful
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2 out of 5

A real disappointment

Written By EricB, Whittier, CA on Tuesday, April 17, 2012
 
I'll say this - it connects the iPod to the USB on the back of my head unit, and it does indeed work. That's about it. The details page for this item say it's 22.5" long - it most definitely is not. 12.5" is more like it. For the price, you would be far better served going to the store and getting a real iPod cable - one that actually reaches somewhere you'd want your iPod to be!

UPDATE 12/12/12: I'm happy to report that the cable is extremely sturdy with a thick protective insulation. It has held up very well so far for me. Be sure to measure for this application however. If you have a front USB port on your head unit, this may be the perfect solution for you. If however, your USB is located on the back of the unit, you may find this cable to be too short without an extension cord.
Pros:
Connects the iPod to the head unit, and transmits the signals like it's supposed to. Thicker wire insulation, cover on iPod connector
Cons:
Extremely (almost unusably) short. Wouldn't reach from my stereo location to the glove box! Good thing I got a mounting kit with my head unit that has a storage compartment built-in, because that was literally about as far as it would reach. Way to expensive for what you get.
3 out of 3 people found this helpful
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For a more in-depth review and enhanced detailed information on the Pioneer CD-IU51, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_130CDIU51/Pioneer-CD-IU51.html ).