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Problem with Kenwood KDC-MP4028 CD Player

Forgot my code.

I connected the stereo in my car about a year ago and I put a code on it, now that I want to change the stereo into my pick up, it is asking for the code and I cant remeber it. I tried many but I can't seem to get the right one.Would any one know if I could reset the code and how?

Posted by avatar on Aug 27, 2007

    • By avatarkasiejhall Mar 19, 2012

    • My kenwood was displaying the word protected and i reset it and it works fine you might want to try it.

    • By avatarkab252002 Feb 21, 2009

    • im having the same problem

    • By avatarhonubaby Dec 25, 2008

    • I have an Eclipse stereo model CDS43 and I can not remember my security code how do I get it the company says it is too old for them to help

    • By avatarnatalie_1983 Dec 01, 2008

    • My battery went dead in my 2000 Mitsubishi Eclipse and now my Infinity CD player/changer is telling my to enter the unlock code. I bought this car used and do not have the code that the previous owner/s picked. The dealership wants $50.00 to unlock it. Is there any way that I can find the unlock code? I don't feel that its fair that I have to pay $50 to unlock it when the previous owner did this. PLEASE HELP!!!!!!
      CD player serial code-03249084B
      Other numbers on the CD player- MR337276, R2-5U07WYTD,
      34 W0125

      THANKS!!!

    • By avatarJBJR Nov 04, 2008

    • I want to put my kenwood stereo in my other vehicle. I forgot my code. my stereo won't powr up without the code. The stereo was purchased 2 years ago.

    • By avatarGuest Aug 25, 2008

    • I don't know how to enter the code , used truck i know the code but not how to enter it

    • By avatarmidnightfall Jun 15, 2008

    • tried to rember my code but i cant

    • By avatarNo Leash Jun 12, 2008

    • i forgot my code. do you have the correct one?

    • By avatarschroederm May 24, 2008

    • I brought my boat used and when I changed my battery the unit is requesting a security code.  The dealer does not have a code and Kenwood is no help.  They want me to remove the unit from the boat and drive it 50 miles and pay $60.00 to their service center to give me the code.  Help!


      Mark

    • By avatarGuest May 24, 2008

    • I brought my boat used and when I changed the battery it is requesting a security code.  the dealer does not have a code.  Kenwood is no help.  They want me to remove the radio and drive it 50 miles to a repair station and then pay $60.00 to get it fixed.


      Mark

    • By avatarkateto Apr 28, 2008

    • i have a 2000 honda accord the batery went death and now i can not turn the radio on because i don remember code

    • By avatarcassandrasmi Apr 23, 2008

    • we just bought a car that has this radio in it and there is a code on it and we cant use the radio do you know haw i can fix it?

    • By avatarpoilkj Mar 30, 2008

    • i forgot my unlock code on a kenwood kdc-x959

    • By avatarcocho Mar 24, 2008

    • kdc-319 flashing CODE ON when i try to play a cd.

    • By avatarachav Feb 22, 2008

    • i tried to connect my radio but i forgot my code and i didnt have any papers or remote because i bought it at a yard sale

    • By avatarkevingn Feb 17, 2008

    • hi i bought a kenwood kdc-x711 off ebay but needs a code what can i do?

    • By avatarjessy9004 Jan 05, 2008

    • kdc-mp5029 forgot my security code. 4 digit.

    • By avatarstranger001 Dec 21, 2007

    • i bought a used truck had to replace the battery and now dont have a code for
      Kenwood KDC-MP4028 CD Player
      please help jason_lrh@yahoo.com

    • By avatarnedstudman Dec 17, 2007

    • The Embassy mechanic, while changing the oil, disconnected the battery and now we need the codes to make the radio work. Our car (Honda CRV) was Made in Japan and purchased here in Antananarivo, Madagascar. The radio is labeled a Matsushita Electric Industrial Co., Ltd. Osaka Japan - Model No. 39100-S9A-W200. REF.No. CQ-EH8484A Serial No. 10000721

      We have spoken with Honda reps in Japan, America and Canada and despite our having All paper work concerning the vehicle their position was,"Sorry, but we can not help you." There are a couple of websites that supposedly will send you the radio codes for your particular radio if you send them money. Sounds good, but, because of the extremely high credit card fraud in parts of Africa the security here at the Embassy STRONGLY urges against such activity if you have any doubts or concerns it may be bogus. So, we have been without the radio for six months now and are about to purchase a new one except this country doesn't seem to have ever heard of an in-dash 6CD changer with a radio! Go figure. If you can help my wife and I we would appreciate it beyond measure.

      Thanks,

      Mike

    • By avatarheisman127 Nov 24, 2007

    • i have an infinity p913 radio in my 01 galant... we had to unhook the battery cables to put in a new engine an now i need a four didgit code... where do i find it an how do i enter it?

    • By avatarGuest Nov 10, 2007




    • i know the code on my peugeouy 309 but dont know how to enter it


    • By avatarGuest Nov 05, 2007

    • Same problem, but the model is KDC-7155. We bought the vehicle used, and all we see is "Enter Code". We've pulled the receiver out, but the serial numbers are only 9 digits long.

Solutions (13)

Best Solution

How do I Reset a Kenwood Security Code?

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.

Common Kenwood Security Codes
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.
Entering Your Kenwood Security Code
If 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.
Entering Letters on 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.

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



HOPE THIS HELPS!!!!! -- AMPMAN--

    • By avatartracychase1 Sep 03, 2011

    • i dont have a remote for my 4032..i bought my 92 ford with a kenwood in it... but cant access it. is there another way without the remote?

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.

  1. Press and hold the Auto button.
  2. While holding the Auto button, push and hold the Track Up button. The “_ _ _ _” will disappear after about 5 sec.
  3. Enter KCAR using the <"Arial, sans-serif">remote control from a higher end CD Receiver or any Excelon CD Receiver.
Enter "KCAR” with the remote controller as described below.
“K”: Press TRACK UP key (>>|) after pressing 5 key twice.
“C”: Press TRACK UP key (>>|) after pressing 2 key once.
“A”: Press TRACK UP key (>>|) after pressing 2 key three times.
“R”: Press TRACK UP key (>>|) after pressing 7 key twice.
* If you commit a mistake in the code entry, the unit enters the
code request mode again.
  1. Press the Track Advance button on the remote to enter the override code.
  2. The unit will enter the All Off or Standby mode if done properly.
Video Unlock:
  1. Use a remote from a higher end CD Receiver or any Excelon CD Receiver. Some Video remotes will work, switch on remote must be set to AUD.
  2. Press 55222277 on the remote. There will be NO visual verification when entering the override code.
Head units with a Up / Down Volume control buttons:
  1. Press and hold the Volume Up button.
  2. While holding the Volume Up button, push and hold the Disp button. The “_ _ _ _” will disappear after about 5 sec.
  3. Enter KCAR using the <"Arial, sans-serif">remote control from a higher end CD Receiver or any Excelon CD Receiver.
Enter "KCAR” with the remote controller as described below.
“K”: Press TRACK UP key (>>|) after pressing 5 key twice.
“C”: Press TRACK UP key (>>|) after pressing 2 key once.
“A”: Press TRACK UP key (>>|) after pressing 2 key three times.
“R”: Press TRACK UP key (>>|) after pressing 7 key twice.
* If you commit a mistake in the code entry, the unit enters the
code request mode again.
  1. Press the Track Advance button on the remote to enter the override code.
  2. The unit will enter the All Off or Standby mode if done properly.

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Suggested Solution (3)

master reset

  • by Author image chiquisg Over a year ago

Source: Forgot my code.

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try this

KENWOOD SECURITY CODE CLEAR procedure


Your radio will require one of the following 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 (so that “…” disappears).
Then using your remote enter your code.

Type 2
Press the "Auto" button and "Track up" on face of radio at the same time. The four dash lines ( . . . . ) should "disappear".

Then using your remote enter your code.

Type 3
Model# DPX-4020 and DPX-4030
Press and hold the 1 then the 6 preset key (preset keys are the buttons on face of radio for storing you "favorite" radio stations). "C" should display.
Then using your remote, enter your code.


Enter your number from the remote control unit. Your code number is 5227 (KCAR)

* Press numeric key “5” ( 2 times ) and press the Track UP/Next Track key
* Press numeric key “2” ( 3 times ) and press the Track UP/Next Track key
* Press numeric key “2” ( 1 time ) and press the Track UP/Next Track key
* Press numeric key “7” ( 2 times ) and press the Track UP/Next Track key

The security is canceled and the set enters the TUNER mode!

  • by Author image Graeme Ross Over a year ago

Source: Forgot my code.

Was this solution helpful?

No

Yes

KENWOOD SECURITY CODE CLEAR procedure


Your radio will require one of the following 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 (so that “…” disappears).
Then using your remote enter your code.

Type 2
Press the "Auto" button and "Track up" on face of radio at the same time. The four dash lines ( . . . . ) should "disappear".

Then using your remote enter your code.

Type 3
Model# DPX-4020 and DPX-4030
Press and hold the 1 then the 6 preset key (preset keys are the buttons on face of radio for storing you "favorite" radio stations). "C" should display.
Then using your remote, enter your code.


Enter your number from the remote control unit. Your code number is 5227 (KCAR)

* Press numeric key “5” ( 2 times ) and press the Track UP/Next Track key
* Press numeric key “2” ( 3 times ) and press the Track UP/Next Track key
* Press numeric key “2” ( 1 time ) and press the Track UP/Next Track key
* Press numeric key “7” ( 2 times ) and press the Track UP/Next Track key

The security is canceled and the set enters the TUNER mode!

  • by Author image Graeme Ross Over a year ago

Source: Can't remember my code.

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