Sometimes everything works fine, sometimes: radio volume knob, power button, preset buttons, and scan won't respond. The radio still plays and can be adjusted using the steering wheel controls. At the same time the ambient temperature display disappears, and the air conditoning light indicators do not work - even though the air conditoning still works.
The radio screws holding the radio are not tight enough. to eliminate this problem remove the radio and adjust the pressure screw in the rear of the radio so it comes out farther>. if the radio is not far enough in the compartment to push in that button the radio controls will not work
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Check all your fuses under the dash and under the hood, replace any blown fuses you find. Sometime the car makers put 2 or 3 fuses in different locations for the same unit. If everything seems ok, then I'd say when you used jumper cables, if the radio was powered on at the time you may have blown the amplifier and it would be time to replace the radio.
Please perform the following procedures while the car is parked. Otherwise you risk getting into an accident while your attention is not focused on the driving.
Entering anti-theft code
The following is the procedure to re-activate the radio if the display shows "SAFE". It is important that the procedure be followed in the correct order.
Turn on radio. The radio display shows "SAFE".
Press the FM1/2 and DX buttons simultaneously and hold until "1000" shows on the display. Release the buttons. Do NOT press these buttons again, otherwise the radio will consider "1000" to be the code.
Use Preset buttons 1 ... 4 to enter the four-digit code number from your radio card. Preset button 1 corresponds to the first digit, Preset button 2 corresponds to the second digit, etc. Each press of the button increments the number by 1.
Once the code shown on the display is correct, press the FM1/2 and DX buttons simultaneously and hold until the word "SAFE" appears in the display, then release the buttons.
The radio should unlock and be usable shortly afterwards.
If an incorrect code is entered, the word "SAFE" appears, first flashing and then continuously. You can repeat the above steps to unlock the radio once more, the number of attempts will be shown in the display. If an incorrect code is entered again, you radio will be locked for about one hour. After one hour - the radio must stay on and the key must remain in the ignition lock - if the display goes out, the you can repeat the above procedure to unlock again. The cycle - two attempts, one hour lock-up - still applies.
If you lose your radio code, contact your Audi dealer.
Other Preferences & Configurable Options
The following is the procedure on how to access some other preferences that you may set in the Audi Delta CC radio.
GALA and Turn-on Volume Settings
Turn off radio.
While pressing and holding the TP button, turn on radio. "GALA" will be shown in the display.
To select the speed at which GALA activates, press the tuning up (up-arrow) or tuning down (down-arrow) buttons to the left of the volume control knob. The display shows the following:
__' Highway speed _'_ City speed '__ Slow speed
To save the setting, press both the tuning up and tuning down buttons simultaneously. "GALA" disappears.
Press the TP button briefly, "VOL" appears in the display.
To increase or decrease the turn-on volume, press the tuning up or tuning down buttons.
To save the setting, press both the tuning up and tuning down buttons simultaneously. "VOL" disappears.
To activate GALA, push the Treble control knob to let it spring out. Then, pull it out one more detent, and then turn the knob to the right. To deactivate GALA, do the same except turn the knob to the left. Push the knob back in when you're done.
If your on/off button is also the volume control. Pull on the knob as you turn the volume up and down threw this section, don't pull so hard that you pull it off the radio. Do this a few tims it seem to work for me when I get static at the control knob. It either gets dirty in there or corrossion, or just a bad contact. Usually it's when the volume and on/off button are the same button.
You need to repair the heater core with a soldering gun.
If you do not have heat, or only have heat, IMHO it is most likey the AC/heater control unit. This is the part which has the AC/heat control buttons and knobs.
Easy Diagnosis: The easiest way to verify this is to turn on the radio, press and hold the power on/off button and press and hold the scan-up button for a second (full second). The word "A/C TEMP" should appear on the left of the display and a number from 0 to 16 on the right. I suspect yours will have the number 0 (or 16 if heating only problem) displayed no matter where you turn the temperature control knob. If this is the case you could turn the temp. knob to full heat and see if it goes to 16 after pushing down or to the right on the knob. In a working system, the number moves evenly in increments of 1, from 0 to 16 as you turn the temperature knob.
Easy Fix: I was able to take mine out and solder 3 loose connections to fix it.
The beginning steps are the same as for any radio removal procedure and check for loose connections.