How Do I Program the Radio Staion Buttons

1. Turn on the CD tuner by pressing the power button.
2. Enter your code numbers to unlock the device if it's necessary.
3. Use the tuning buttons to navigate to the AM or FM radio band.
4. Use the seek or manual tuning buttons to find the desired station.
5. Once you find the desired station, press and hold the preset button to save it to a specific preset location.

If you are having trouble with the CD tuner losing your presets, you may want to try resetting the unit to its factory settings. You can consult your owner's manual

You don't set these buttons. The traffic button scans Radio Data Service (RDS) information from radio stations near you for Traffic information. The Info button changes what RDS information is displayed for the current station.
The numbered preset buttons are the only buttons on the radio you can program. Too program a preset, tune the station desired and hold the numbered preset button down until you hear a beep.

do you know the radio model as there are a few dif types fitted...

You may have to leave your key on the on the position one for 2 hours. Then it should reset itself so you can enter the code.

I have come to find out that in the 90's auto makers started installing factory amplifiers in their cars so they could use low wattage stereos in the dash. It's usually a blue wire off the stereo that runs the amp, maybe it couldve become disconnected? I also know that even if you put in an after market stereo, this wire must be hooked up or you'll get no sound from the speakers. hope this helps.

May just be the wiring of the car or maybe something is loose or became disconnected. If the radio has been removed then that's an easy problem to get. It may also be the anti-theft system. Some vehicles can be very difficult to install a stereo system or any other add-on because of the way it's wired for the anti-theft.
I have also heard that some of the Jettas had wiring problems that were hard to trace. I know someone who had one that was an early 2000 model.
Try to find out if there were any recalls about that, but I would probably just get another one installed at some place that's experienced with radio installations because they would know how to wire these thing in. Hope this helps

Tune to the first and lowest station on the band that you want and push and hold button number one (in the row of buttons immediately below the station display) until the number shows on the display and flashes. Pre-set one is now that station. Repeat, using button two for the next, and so on, until you have all the stations you want programmed.

THIS IS NOT SOMETHING YOU CAN FIX IT IS A SMALL CIRCUIT BOARD INSIDE THE RADIO THAT RUNS THE DISPLAY AND BUTTONS FOR STATION CHANGE ETC. THE ONLY WAY TO FIX IT IS TO PULL THE RADIO OUT AND SEND IT TO A AUTHORIZED GM/STAURN ELECTRONICS REPAIR CENTER, THEY ARE THE ONLY ONES THAT HAVE THE PARTS AND REPAIR MANUALS.

Go to the radio station that you want, once there, push any of the numbered buttons and hold it there for a couple of seconds. That should set it.

This is not a fuse problem, it is a burnt out display backlight bulb, you have to pull the radio out of the dash and remove the top cover of the radio, you will see a tiny bulb socket, twist it out, replace that little bulb.