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Car Stereo Security Codes

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After ten years and 130,000 miles the battery in my truck finally won't hold a charge. Replaced the battery and now my Kenwood stereo is in "security code" mode. When I did the install I never entered a code, all I did was basically plug it in and it has worked great for the past 5 years. Does anyone have any idea how to get out of this mode? My research has turned upped codes like 3051 and KCAR. They don't work.

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It is probably doing the same thing a stock stereo does. I would get the serial # off of the back and call kenwood and tell them what is happening. Most likely they will be able to give you the correct code with that serial #.

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When you removed the battery you tripped the security feature. Do you have the manual? Do you remember setting any kind of security code? Try these:

Try 1234, 1111, 9999, etc. Also try any common pin codes, like your ATM code you may use in case you set one and forgot about it.

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