the problem is your ignition and your permanant battery live wires are the wrong way round all you have to do is remove the stereo and you will usually see a red wire plug into another red wire and a yellow wire into another yellow wire all you have to do is change the red to the yellow and the yellow to the red and it will hold the memories fine hope that helps !
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first of all you must be able to check out a few things like do you know how to set your clock for the kd-r805. if you can check to see if you set your clock and set your presets for radio station to be saved. set your clock and set all your station presets once done. Once you have done that turn off the car wait about 60 seconds then turn your car back on to power up the radio and see what happens to your clock and presets . if your clock and presets are not still saved this means that who ever did the radio install has the yellow memory wire connected to switch ignition and not constant battery wire from the factory harness. have someone fix it. If the clock and station presets are still save then it was that you don't know how to program the clock.. how to program your model radios clock .......
STEP 1 : TURN ON POWER TO RADIO
STEP 2 : PRESS AND HOLD MENU UNTIL THE MAIN MENU IS SHOW ON RADIO SCREEN PRESS AND TURN THE VOLUME KNOB TO MOVE THROUGH THE MENU (YOU MUST CANCEL THE DEMO FIRST TO BE ABLE TO PROGRAM THE CLOCK). STEP 3: TO SET THE CLOCK SELECT THE CLOCK IN THE MAIN MENU SETTING ROTATE THE VOLUME KNOB AND PRESS IT ONCE TO SELECT THE CLOCK SETTING.
STEP 4: ADJUST THE HOURS AND THEN PRESS THE VOLUME KNOB TO MOVE ON TO THE SECONDS . STEP 5 : THEN SELECT 12HR OR 24HR TO BE DISPLAYED STEP 6 : RETURN TO THE PREVIOUS MENU BY HITTING (BACK BUTTON) STEP :7 TO EXIT SETUP OR MENU HIT THE (MENU BUTTON) firstname.lastname@example.org
You can assign radio station presets on your stock VW radio by tuning to the radio station you would like to preset, and then holding down one of the preset number buttons until the radio beeps. You will now be able to access the station by pressing the preset button.
Finally sussed out how to (re)set presets, overall you need a little patience: Probably best to press Autotune before we set off and let it do its thing. Press 'presets' and find a free channel or the one you want to change, leave it until you can hear the station its on play. Now, press 'jog/select' and WAIT until it says <SELECT> (but don't wait too long when it says this or you'll have to start again) Use dial to find station you want AND LEAVE to tune in. Press AND hold presets down until number flashes. Press jog/select once briefly (normally). Press presets once briefly...it should now say "Saved" Leave to save for a few seconds. Voila! You can now change station either by pressing Presets and moving dial...waiting for the station to load OR press jog/select to manually tune to the station of your choice using the dial.
To set individual presets:
1. tune to the station you want as a preset
2. hold down the number (ie "1") on the remote until the number blinks on the system
3. repeat for all other stations
press the number on the remote to tune to your preset
this is very similar to setting the presets on my car radio
select radio station then select which number you want to preset station to and press and hold until you hear the unit beep,also preset station will flash once aswell as the beep,station should be preset into your headunit,goodluck.
be sure when setting presets you hold the button down for at least 3 seconds to set the channel, if you are doing this correctly, you may have a blown back up fuse under the hood. there are 2 fuses for the radio one is marked radio and is inside the fuse pannel on the inside of the car the other is for memory back up and located in fuse box under hood may be marked B/U just check them all to be sure!
Try just holding the button of choice down. In my Audi, when I had a factory head unit, to set for example, preset 2, I'd just tune to the station I wanted to program, and then hold down the number 2 preset button until the display stopped blinking. It was then preset.