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Replaced battery. stereo system will not work. code shows on face of system

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Depending on the manufacturer of the radio, you either have to go to the dealership if factory installed or provide proof of purchase and get it from the aftermarket manufacturer. If aftermarket, find a local car audio dealer of that manufacturer and they can get the code for you. Unfortunately, this is generally a service that is charged for. $ 20-30 depending on dealer or retailer. Hope this helps.

Posted on Oct 01, 2009

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What is EC code in kenwood a.c ?


  1. If your car battery died, your Kenwood stereo will ask you for a code. There are various ways to enter the security code; this depends on the model of your Kenwood stereo.
  2. Look in your manual and see what the security code is for your particular Kenwood stereo. There are common security codes on many Kenwood stereos. Kenwood claims security, but its stereos have many of the same security codes. Here are three common security codes: 1-2-3-4 (a code many Kenwood owners use), 3-0-5-1 (a common security code in Kenwood manuals) and KCAR (works on some Kenwood stereo models). You should have a code within the pages of your manual. Luckily, many Kenwood stereos have the same security codes.
  3. Enter the security code into your Kenwood radio. Method #1: During the code request mode, while holding the DISP key depressed, press and hold the "Volume UP" or "DOWN" key for three seconds until the " ... " display disappears. Enter the security code using your Kenwood remote. Method #2: Press the "Auto" and "Track Up" button on the face of radio at the same time until the four dash lines disappear. Enter the security code using your Kenwood remote. Method #3: Press and hold the "One" then the "Six" preset keys until the display shows the letter "C." Enter the security code using your Kenwood remote.
  4. Tips:
  • If you did not have your manual, try the most common codes for Kenwood stereos. If those codes don't work, you can also buy your Kenwood stereo code online. There are places online that will sell you the security code to your Kenwood stereo.
  • Keep your security code and this information in a safe place.

Here is a link to a more detailed site Good Luck

May 18, 2016 | Kenwood Car Audio & Video

1 Answer

Stereo stopped working will not turn back on


Many car stereos use an anti-theft pass-code scheme. If the stereo is removed from the vehicle, lock-off is triggered by the loss of battery power to the stereo, and the only way to get it to turn on is to enter the pass-code on the front panel buttons. If you had to disconnect the battery, or it went completely dead on you, that's your problem. Check the manual for your stereo for details.

Note: some stereos requiring entering the pass-code before disconnecting the battery - for those who might have such systems, save yourself some grief and check your user's manual ASAP so you are prepared.

Another possibility is a shorted speaker amplifier has blown the radio fuse. Check the speaker wiring for damaged insulation before you install the repaired or replaced stereo. A competent electronic technician can generally check the amplifier modules or transistors for shorts and replace them as needed. Be sure to ask which speaker output is bad so you know which one needs a wiring check.

Apr 03, 2015 | Car Audio & Video

1 Answer

Changed car battery and the dual car stereo won't work now. reset the stereo and the security light is flashing and the stereo still won't work?


Your solution depends on the brand and model number of your stereo system I take it your stereo system is Ruth is included in a anti-theft device this is highly technical and manufacture specific you need to follow the instructions for installing the system initially somehow your system lost sanity. You need to unplug the fuse that goes to your stereo turn your stereo switch on and let it sit for a day then return with the users manual and go through the installation sequence that has to do with connecting power and setting default settings other than that you have to contact the manufacturer

Nov 25, 2014 | Dual Xdma6540 Car Stereo Receiver

1 Answer

I was wondering does the Alpine CDM-7874 have any code. I just bought a car with this system in it and it had a dead battery and the stereo is not working


There should be no code. If you can try to see if you can check to see if power is getting to the red and yellow wires on the back of the radio. If there is a reset switch, try pressing that. It should be a small depression about the size of a pencil tip on the face or a hole with a red switch behind the face on the subpanel.

Apr 24, 2011 | Alpine CDM-7874 CD Player

1 Answer

I disconnected my car battery now my sevilla 168 will not turn on please help


Hello,

GPS systems are standard features in many new vehicle . A GPS system communicates with satellites to provide directions through unfamiliar locations. However, older vehicles don't come with GPS, and many drivers purchase aftermarket systems for their vehicles. Installing a GPS system in your vehicle can increase its value and help make traveling a much more enjoyable experience.

Instructions And Materials Needed Below.

  • Plastic putty knife,Flat and Phillips screwdriver set,Wrench set,GPS system
  1. Slip the edge of a plastic putty knife under the edge of the radio face and lift the plastic housing off. Most aftermarket GPS systems incorporate a radio or CD player to replace the old stereo.
  2. Loosen the bolts on the left and right side of the stereo and pull it gently out of the dashboard. Unplug the connections at the back of the stereo and unscrew the mounting bracket on each side.
  3. Connect the mounting bracket from the stereo to the sides of the GPS system. If you've purchased the correct GPS unit for the make and model of your vehicle, the bracket will attach with just a screwdriver.
  4. Plug the wires into the back of the GPS system and slide the unit back into the dashboard. The ports on the back of the unit will be color-coded to correspond with the proper wire plugs, so there is no confusion when connecting the unit.
  5. Secure the GPS unit by inserting the bolts back into the bracket and tightening them with the wrench. Replace the plastic cover over the face of the unit and press it down until the plastic holders click into place. Turn the vehicle on and follow the instructions on the screen to program your new GPS system.

Good Luck.

Dec 07, 2010 | Blaupunkt GPS

1 Answer

Following a flat battery, my cd player won't work.


You dont need a code if your radio is working but your cd isnt. You just need to reset the cd player by finding a little small indent on the face and push it in with a sharp pen, pencil or paper clip. Some reset buttons are also found when you remove the face of the radio. You will notice it when you see a little small round hole. Push it in for at least 2 or 3 secs

Apr 08, 2010 | JVC AM FM CD DET FACE CAR STEREO

1 Answer

Car stereo is flashing ''protect'' on the detachable face-reason? stereo was working fine all day-got in truck tonight, turned on ignition ''protect'' scrolling across face-no sound-will not play cd-remote...


Thats the anti theft mechanism. usually theres a button, or switch you have to press or change somewhere on the stereo. Usually on the base part behind the detachable face.
Without knowing what kind of stereo it is I cant be sure, but some have security codes to prevent the use of it if you dont know the code. the combination needs to be entered with the 0-9 buttons, and is always a 4 digit combo. Usually when you set up that feature, it asks you for a custom security number and if you forget it, your pretty much screwed, as you have to remove the stereo, either find out the memory kill wires, and cross them, or open it up and either cross the memory wires or remove the eternal battery. If this is the case, you will need to have a trained professional fix it, car stereo's are very compact and will be almost impossible to re-assemble it yourself unless you have the proper tools to do it.
Chances are, theres a switch or button you need to use though. You might have acidently hit it without knowing it when taking the face off, or changing the vollume or station.

Mar 09, 2010 | Car Audio & Video

1 Answer

My jvc car stereo show eject in the panel a nd


Check wiring. Yellow to Battery, Red to ignition sw, black to ground. Confirm the functions. If everything is OK, then connect speakers, antenna, etc.

Dec 31, 2009 | JVC AM FM CD DET FACE CAR STEREO

2 Answers

Replaced dead battery....stereo won't work.


hi,you can look your amplifier sound system,maybe the fuse is blown when you replacing your battery,ty

Apr 07, 2009 | 2000 Mercedes-Benz SLK

1 Answer

My car stereo is not working since the car battery became flat.


You'll have to call the company, you always do for unlock codes. Certain sets of serial numbers have a different range of codes.

Feb 12, 2009 | JVC AM FM CD DET FACE CAR STEREO

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