Tip & How-To about Car Audio & Video

Automobile Radio Secuity Code

Tired of searching for your vehicle in dash receiver security code after the battery has been disconnected? Here is a simple device that will keep that from happening.
You will need a cigarette lighter plug, a 9 volt battery snap-on connector, and a standard 9 volt battery. The snap-on connector can be retrieved from an old smoke alarm. Solder the connector to the two wires from the cigarette lighter plug; Making sure the polarity is correct ( + to + and - to - ). The center tip of the plug is positive and the two outside springs are negative. A piece of shrink tubing slipped over each wire before soldering makes a neat and safe connection. Connect a fresh 9 volt battery to the snap-on connector. When the vehicle's battery needs to be disconnected; Plug the device into the cigarette lighter before the battery is detached and power will be maintained to the radio.This eliminates the need to input a security code.

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I had to disconnect the battery and didn't get the code from the previous owner Kenwood dx9140


Like many stereo systems in our vehicles, an anti theft program is installed to make your device inoperable if the battery is disconnected. Your owners manual usually has a section about how to prevent lock out. Sometimes, the device cannot be recovered..what the program is designed to do.

Check out the link above to see if you can correct it. An owner's manual for your model can be viewed/ download as well. Good luck.

Sep 20, 2016 | Kenwood Excelon DNX-9140 Car GPS Receiver

1 Answer

radio for c class mercedes avantgarde 2007 does not work after changed battery

Your vehicle sound system in-dash unit is protected by a security code so that it is rendered unusable if stolen. Disconnecting the car's battery simulates theft and immobilises the device. You need to enter the system security code to restore functionality. You can get the code from your local authorized Mercedes-Benz dealer or by contacting the Customer Assistance Centre with your Vehicle Identification Number [VIN]. Be sure to record the code in a secure place for future reference.

Dec 23, 2014 | Vehicle Parts & Accessories

1 Answer

replace egr valve and check engine light keeps comming on

Might try resetting the system by disconnecting the battery lead for a few minutes. The system may be confused with the disconnection and new install, so removing power may reset it. Also, there is a engine light reset switch under the dash. Not exactly sure right where it is, but it is just a simple switch that can be moved from one side to the other. Like a toggle switch, but smaller. This resets the engine light headache and starts a new counter for the next time it lights up for something. Mitsubishi placed these switches on all there vehicles. My 86 truck has it right behind the speedometer under the dash. I use to have to switch it every 50K miles because it was programmed to turn on in that time range. I finally got tired of it and removed the bulb from the engine light warning thing. I don't suggest you remove the bulb,, but I do suggest you look under the dash for that reset switch and flick it to the other side for normal reset procedure.

Jul 02, 2014 | 2003 Mitsubishi Montero Sport

1 Answer


just remove the brain box or look under dash for a overide toggle switch

Jan 26, 2013 | Viper Vehicle Parts & Accessories

1 Answer

how to remove dash on silverado

Lloyd I hope you are ready...All right here we go:
It mainly consists of removing the screws and clips that secure the dashboard to the vehicle. This can take you more than one hour Lay out a towel or blanket to place the parts so as not to misplace them
Turn off the engine and open the hood to access the battery. Remove the negative terminal from the battery.
Remove the kick panels on both sides of the vehicle by removing the four screws securing each panel with a Phillips screwdriver and pulling the panel out.
Remove the glove compartment by opening it and removing the two screws securing it. Pull it out of the vehicle.
Remove the instrument panel dash trim screws. There are two above the instrument panel and two below. Pull out the dash trim.
Remove the two screws securing the radio and the two screws securing the HVAC unit. Pull the devices out of the center console and disconnect their electrical-plug connectors. Remove them from the vehicle.
Remove the four securing screws from the instrument panel. Pull it out with a slotted screwdriver and disconnect the electrical-plug connector.
Take out four screws at the corners of the center console faceplate.
Insert the slotted screwdriver in between the windshield and the upper dash trim. Pry it upward and remove it. Disconnect the remaining electrical-plug connectors. Try to note where everything goes it helps to keep notes, yes this adds time, however reinstalling will become easier. Good luck.

Dec 07, 2011 | 2005 Chevrolet Silverado 1500 2WD

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