Question about Kenwood KDC-5021 CD Player
I had a problem as well with my KDC-MP6025 after I changed my car's battery. I called Kenwood four times asking about why my security code wouldn't take, and on the fourth call the tech said some random 2004 models (definately the MP6025, and probably it's sister receivers the KDC-X678 and the MP625) the decks firmware subtracts one from the 3rd digit if the sequence, i.e., if you set it for code 1234, you'd have to enter 1224. Since I sent Kenwood my product registration, it would have been nice for them to tell me this. I would have been BS if I had found out after if I had kept my $60 appointment to get the code cracked at the authorized repair place Kenwood recommended.
Posted on Sep 27, 2009
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Posted on Jan 02, 2017
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Jan 06, 2016 | Kenwood Car Audio & Video
Many Kenwood radios are configured with the same security codes:
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.
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