Question about Kenwood Car Audio & Video

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Ive got a car stereo kenwood kdc9017.Its got a feature>security code that got turned on,and i cant figure out how to reset it!Can you help me out??

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Hopefully you know the security code......go to www.kenwood.com you can download the KDC9017 manual. I think following it at your own pace will be much easier.


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Posted on Nov 30, 2008

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My Kenwood car radio needs a code ,model for my car radio is. Dpx7021mpg


A number of Kenwood stereos are sold which use the same security code. Some of the most commonly encountered codes are:
1234 - Not a factory default, but a commonly found security code when attempting to figure out the code for a Kenwood radio purchased second or third-hand.
3051 - Security code included in a number of Kenwood radio manuals.
KCAR - A common Kenwood model security code that has been found to work across a number of models of the stereo


BEST CAR Radio Code Calculators Page 14 GSM Forum

Mar 11, 2015 | Kenwood Car Audio & Video

1 Answer

My system is blocked on secuirity code enter when i switch it on and i don't have the code. My car stereo is a Kenwood KDC-MP638U. happened when i removed it from one car to another car. have tried using...


Many Kenwood radios are configured with the same security codes:

  • KCAR - This seems to be a "backdoor" to some Kenwood models.
  • 3051 - This is the security code which is printed in the manual of many Kenwood models.
  • 1234 - This is a security code commonly chosen by Kenwood owners.
A Security Code Bug in Some Kenwoods

There is a reported bug in the security code handling of some Kenwood stereos. In models with thie bug, the security code is stored incorrectly. The workaround is to enter the wrong security code.

In models with this bug, you have to decrement the third character of the security code by one. If your security code was 1111, you would enter your security code as 1101. If your security code was 9999, you would enter 9989.
Finding the Kenwood Security Code

There are backdoor codes for each Kenwood car stereo, based upon the model and the serial numbers.

These backdoor codes are closely held secrets. Outfits like Car Audio Accessories UK will sell you the code for your radio for £20.
Sending your RadioBack to Kenwood

If all else fails, you can send your stereo back to Kenwood to have the security code reset.

Dec 15, 2010 | Kenwood KDC-MP638U Car CD/ MP3 Player

1 Answer

I have a radio in a truck i bought and the battery died. the guy gave me a code and i cant get it to take in the radio any help would be appreciated


Kenwood car stereos are protected against theft by four digit security codes. If a thief steals a Kenwood car stereo, they will not be able to use the stereo until they enter the secret for digit security code.
Unfortunately, many legitimate owners are also locked out of their Kenwood car stereos due to these security codes. This typically happens to people who buy used cars from people who forget to share the security code. However, it also happens to people who simply forget their security codes after several years.


  • KCAR - This seems to be a "backdoor" to some Kenwood models.
  • 3051 - This is the security code which is printed in the manual of many Kenwood models.
  • 1234 - This is a security code commonly chosen by Kenwood owners.
  • f the car battery fails or is disconnected, the Kenwood will ask for the security code. The procedure to enter your security code differs on various models of Kenwood car stereos. Here are three of the more common procedures:
    Type 1
  • During the code request mode, while holding the DISP key depressed, press and hold the Volume UP or DOWN key for 3 seconds until the "..." display disappears.
  • Enter the security code using your Kenwood remote.
Type 2
  • Press the "Auto" button and "Track up" on the face of radio at the same time until the four dash lines disappear.
  • Enter the security code using your Kenwood remote.
Type 3: Model# DPX-4020 and DPX-4030
  • Press and hold the 1 then the 6 preset keys until the display shows the letter 'C'.
  • Enter the security code using your Kenwood remote.

To enter a letter using your Kenwood remote, press a button once for the first letter, twice for the second letter, and three times for the third letter -- then press the Track Up or Next Track key to send the letter.
To send the letter 'A', press the 2 key once and then press the Track Up key. To send the letter 'B', press the 2 key twice and then press the Track up key.
Finally, when you are done entering all of the letters, press and hold the Track Up button for 3 seconds.
The key sequence to enter the security code KCAR is:
  • 5
  • 5
  • Track Up
  • 2
  • 2
  • 2
  • Track Up
  • 2
  • Track Up
  • 7
  • 7
  • Track Up
Your Kenwood should then enter tuner mode.
A Security Code Bug in Some Kenwoods There is a reported bug in the security code handling of some Kenwood stereos. In models with thie bug, the security code is stored incorrectly. The workaround is to enter the wrong security code.
In models with this bug, you have to decrement the third character of the security code by one. If your security code was 1111, you would enter your security code as 1101. If your security code was 9999, you would enter 9989.

Dec 02, 2010 | Kenwood KDC-MP332 CD Player

1 Answer

When i hook it up the only thing it dose is flash the word protect


when its hook up press the tiny reset or go online to kenwood for the mater reset code for the model reciever you have that is a security feature kenwood has on its stereos when they are stolen only thing it doesnt know when the battery dies on a car or is removed. anyway kenwood has a master or check you manual. the preset station number are what you press for typing in the code.

Nov 21, 2009 | Kenwood KDC-MP2032 CD Player

1 Answer

Kenwood kvt-m700 security code problem


You can send it off to a company on ebay who will de-activate the code for the stereo.

Mar 02, 2009 | Kenwood KVT-M700 Car DVD Player

1 Answer

I have a Kenwood kdc mp828. I disconnected my battery cable and now can not remember my security code. I need to reset the unit so I can again listen to my stereo.


I read a blog on your site about Kenwood stereo's. I used that information to unlock my stereo security code. Albiet, I did have to figure out a bit of the code needed myself. I am again able to listen to music on my stereo.

Jun 26, 2008 | Kenwood Car Audio & Video

25 Answers

Forgot my code.


What button should I push if I don't have an "auto" button, both on the remote or the head unit? I have a dNx-5140. All help would be appreciated.

Aug 27, 2007 | Kenwood KDC-MP4028 CD Player

1 Answer

I NEED THE DEFAULT SECURITY CODE FOR MY KDC-MP228.


Kenwood Stereos do not have 5 digit codes. They are only a 4 digit code.

Mar 27, 2007 | Kenwood KDC-MP228 CD Player

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