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Everytime i turn my car off and take the key out of the ignition all my stereo presets reset. all connections made are correct, however there is one wire which is left over. it is orange with white stripes and the brouchure says its the car lighting control wire. its a jvc kd-g646 head unit. everything else is working correctly.

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  • lhencz Apr 04, 2008

    thanks mate! your suggestion lead me to look at the circuit diagram. all the problem was was the unswitched active and the active running through the ignition were swapped over. works perfectly. thanks!

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Most stereos have two power connections. One is "constant" (aka always connected to +12V) and the other is switched on/off by the ignition. They may go be various names. The idea is that the constant +12V keeps the stereo from losing all of the settings while the switched power turns the stereo off when the key is not on "start" or "accessory". It sounds like the both connections may be made to the switched power on your car, causing it to go completely powerless when your car is off.

Are the presets reset after you turn the car off or only after you turn your car back on? If they only reset after turning the car back on, it's possible the battery and/or electrical system is having trouble keeping the system voltage up while the starter is trying to turn the engine.

The illumination signal is usually used to let the stereo know when you've turned your headlights on, so it can dim the display automatically. Should be completely separate from your issue.

Posted on Apr 02, 2008

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1 Answer

Everytime i start my truck the CD comes out and all my presets are resetted. i unhooked all the wires and reinstalled them but i have had no luck in solving this problem.


Make sure the yellow wire is connected to a source that still has 12v when the key is turned off. The yellow wire controls the memory of the deck.

Sep 25, 2011 | Car Audio & Video

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Do you connect memory and power to the ignition terminal wire


The yellow (memory) wire needs to go to a constant power source in order to retain the memory, the red wire goes to ignition. You can connect them both up to the ignition, but you will lose preset and clock memory every time you turn the key off.

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Im trying to find out how to enter the radio code for a factory fitted stereo. A family member has just been given a renault 19 1994/1995. We have the code but, no user manual for stereo. Any help would...


PHILIPS RENAULT CODE ENTRY INSTRUCTIONS

FOR CARS WITH A STEERING WHEEL REMOTE CONTROL

(Note :If you don`t have the [ ¬ ] button then push the thumbwheel in and some will have an [ A¬ ] button )

Turn on the radio and the display will show 'CODE'

Use the Steering Wheel Remote Controls for code entry.

Press the [ ¬] button then rotate the thumb wheel for the correct first digit
Press the [ ¬] button then rotate the thumb wheel for the correct second digit
Press the [ ¬] button then rotate the thumb wheel for the correct third digit
Press the [ ¬] button then rotate the thumb wheel for the correct fourth digit

If the correct code is now shown on screen,
press and hold the [ ¬] button for up to 10 seconds to store the code


IF THERE IS NO STEERING WHEEL CONTROL , THEN USE THE PRESET BUTTONS ON THE RADIO

Press the First Preset Button repeatedly for the 1st digit to be displayed
Press the Second Preset Button repeatedly for the 2nd digit to be displayed
Press the Third Preset Button repeatedly for 3rd digit to be displayed
Press the Fourth Preset Button repeatedly for 4th digit to be displayed

Then press and HOLD Preset button 6 for 10 seconds to store your code

(Note :Some radios use Preset Button 5 to store the code )
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I hav the code ect (Blaupunkt 300 ina astra van), now need to know how to install / reset radio


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Press and hold AS button * and the ON button at the same time

Display Shows SAFE then goes to 10 - - - - with a "Beep" from the speaker

Press Preset Button " 1 "repeatedly until the 1st Digit of your Code is displayed
Press Preset Button " 2" repeatedly until the 2nd Digit of your Code is displayed
Press Preset Button " 3" repeatedly until the 3rd Digit of your code is displayed
Press Preset Button " 4" repeatedly until the 4th Digit of your code is displayed

If the display now shows the correct Code number then

Press Button AS and hold to Enter and if successful there should be a "Beep" from the speaker and the radio should switch on

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HYUNDAI GETZ 2006 MP3-03G STEREO CODE Hi there! Bought a Hyundai Getz 2006 and the battery went flat, meaning that the MP3-03G stereo reset and wanted a security code. Problem is, that the code we...


Hello,

Radios have a theft-proof system that freezes the radio if power is interrupted. It was designed that way to prevent theft of the radio. The downside is your radio will be locked if you disconnect the battery for any reason, or if the battery dies. When you restore power, it will say ‘CODE‘ on the display.

  • When the radio displays CODE, you may enter the code using the preset radio station buttons
  • For instance, my number is 1615, so when I get the CODE on the radio’s display, I press the radio preset button 1, then the radio preset button 6, then the radio preset button 1, then the radio preset button 5.
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1 Answer

Stereo does not store adjusted audio settings and restarts after being turned off


Check to make sure the yellow from the stereo harness is connected to constant battery, connected to the battery, when the ignition switch is off, the yellow wire still has power. The yellow wire is for the memory for the stereo settings and radio station presets.

May 16, 2010 | Car Audio & Video

1 Answer

Help: pioneer headunit install into a ford corsair 1990.


This is tough, You need to find one that gives continuity through it when the keys are off, and on. These are the positive wires which is your constant, and accessory. The constant is always powered so when the key is turned off, it's purpose of giving power to the stereo for memory(stations,clock,presets) will work. The accessory as we now know only turns on with the key turned. Finally the ground is a negative, and must not touch the previously mentioned wires. Test for continuity against metal, and probe the suspected ground wire for continuity.
Once these wires are correct, splice them together and the radio will turn on. Now you have the painful process of hooking up one speaker wire,(from stereo) and touching the other wire same color to the other wires in your car to make the speaker work, the more you get the faster it goes as you will weed out incorrect wires since you already have some that work. Once you know a set of 2 wires works for a speaker, make sure it is the correct speaker location, as white and gray are front speakers, and the green and purple are rear speakers. This is longer than knowing the colors, but once completed, you can label the wires and have them known for future technicalities.

sorry your car was not on my wiring list, so no info.
Any questions feel free to ask!

xxsodasipperxx@yahoo.com

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1 Answer

Display for radio stuck in '7 SAFE' mode


This sounds like a Phillips Car Stereo:

To get the code in:
1. Turn the stereo off.
2. Turn off the ignition
3. Turn the ignition back on (dash warning lights on)
4. Hold and keep down the AS button on the stereo.
5. Turn the stereo on.
6. Release the AS button after 4 dashes appear on the display
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2 once
3 once
4 nine times
If you go past you can go round again by pressing the
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9. The stereo after beeping will scan to program channels
You have 10 attempts to get the code in. However some models will not give you the number of attempts remaining!

Time delays work as follows:

Attempt 1. 10 seconds
Attemp 2. 30 seconds.
Attempt 3. 10 minutes.
Attempt 4. 20 minutes
Attempt 5. 40 minutes
Attempt 6. 80 minutes
Attempt 7 160 minutes
Attempt 8 320 minutes
Attempt 9. 640 minutes (yes that is 10 hours 40 minutes!!)

Vitally important thing to remember, the countdown timer works only when the radio is switched on. ANY interruption in the power will reset the timer!

So, be prepared for a VERY long wait to be able to enter the code!
Oh, and if it has reached 10 attempts, then it needs a dealer unlock.

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2 Answers

When my daughter turns her car audio off, we loose preset stations.


Two questions to narrow this down - one, is it an aftermarket stereo, or a factory one? Two, with the key out of the car, can the stereo be turned on?

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