I have just bought a Bush DAB/FM Stereo Radio. There are 3 buttons, marked 1,2&3 to the right of the other function buttons. These are shown as Memory Buttons on the diagram in the User's Manual,

1. Connect the FM antenna and the AM loopantenna at the back of the unit. Rotate the AM loop for better reception.
2. Press AM/FM.
3. Tune a station by pressing TUNER+/-repeatedly until the desired station is found.Alternatively, you can press and hold thesame buttons down for about one second toactivate the automatic search function. Inthis mode the unit will automatically tunefrequencies until it finds a station.
4. Repeat step 3 to tune to another radio station.
5. Press AM/FMto select between FM and AM.Storing Radio Stations

The unit can store up to 40 radio stations (30 preset stations for FM and 10 preset stations for AM) in its memory. You can enter every single radio station yourself or the unit can store all available radio stations automatically in ascending order

Automatic Preset Programming
1. Press AM/FM to enter the AM/FM mode.
2. Press and hold AM/FM for two seconds to start automatic preset programming.
3. Radio frequencies will be browsed and radiostations stored automatically. When all the available radio stations are stored or all 40(30 preset stations for FM and 10 preset stations for AM) memory locations are full,the auto preset programming function will stop.

Manual Preset
1. Tune to a radio station (see "Manual tuning"for details).
2. Press MEMORY. While the Program Preset number is still flashing, input your desired preset number using the numeric buttons or press CH+/-, then press MEMORY to store it.

Retrieving Preset Stations
1. Press AM/FM to enter the Tuner mode.
2. Press CH +/- to search up or down for thepreset stations or directly press the numeric buttons.

I have a Kia Carnival 2005 KVII. I had to contact Kia to get the radio code and give the vin number. Note # you will only get 3 attempts.
My Kia has a Mobis HM3700 and the Code I was given is 1812.

To insert code:
1 look at the front of the Radio you will see a screen, and at the bottom of the Right hand side is a set of channel select buttons.

they look like this
1 2 3
4 5 6

Each button from button number 1 to number 4 will cycle through from 1, 2, 3, 4, 5, 6, 7, 8, 9, to 0 each time you press these buttons you will change the number on the screen.

When you have the numbers shown below

Button numbers 1 2 3 4
Numbers showing 1 8 1 2

Than press Number 5 button to accept

see this procedure and fix it. God bless you

1. • 1 Start the car and turn on the radio.
     
   • 2 Press down on preset numbers two and three until a three-digit number displays on the radio. Write this number down.
     
   • 
     
     
   • 3 Push the AM/FM button and a new three-digit number will display. Write this number down to the right of the original number, to create a new six-digit number.
     
   • 4 Call 1-800-537-5140. This is the radio code phone line.
     
   • 5 Enter 106010, and then press #. This is the Chevy radio dealer code.
     
   • 6 Type in the six-digit number you had at the end of Step 3, and then press *. The phone line will then give you a four-digit number. Write this down.
     
   • 7 Use the Minute and Hour buttons on the radio to type in this code, and then press the AM/FM button to unlock the radio.
     

check your fuses first. You may have blown one.


Visual Inspection Chart Mechanical Electrical

• Integrated control panel (ICP) physically damaged, misaligned, any control(s) inoperative
• Digital audio compact disc player physically damaged, misaligned, any control(s) inoperative
• Antenna or antenna cable physically damaged, misaligned connection(s)
• Radio speakers, mounting/speaker cones physically damaged, misaligned
• Radio ignition interference capacitors, radio frequency interference suppression bond misaligned (also check for cleanliness and metal-to-metal contact)

• Battery junction box (BJB) fuses F127 (5A), F117 (20A), F127 (5A).
• Central junction box (CJB) fuse F227 (10A) F211 (15A), F216 (15A), F226 (10A) (wagon only)

1. If the fault is not visually evident, proceed to diagnose the integrated control panel (ICP) by entering the ICP Self-Diagnostic Mode.

ICP Self-Diagnostic Mode
NOTE: To enter the ICP Self-Diagnostic Mode, the ICP must be ON and in radio tuner mode (AM/FM).

1. Enter the diagnostic mode by pressing and holding preset buttons 3 and 6 simultaneously. This will suspend all radio functions, and display SP.

1. Preset Button 1 = Audio internal/external SELF TEST. The display will flash SELF while gathering the diagnostic trouble codes (DTCs), then stop flashing when complete. Press the TUNE UP button to display the DTCs if any exist. Record codes and refer to the following table:

ICP SELF-TEST CODES Code Description 0 No diagnostic trouble codes logged 1 No response from rear chassis unit (RCU) 2 No response from cassette player 3 - 4 No response from compact disc player 5 - 6 - 7 No response from remote climate control 8 - 9 Read Only Memory Verification failed

1. Preset Button 2 = Displays the feature strap for code identification, refer to the following table.

Code Description 01 Base-Electronic Search Radio (ESR) with Manual Climate Control (MCC) 07 Electronic Search Radio with Cassette (ESC) with MCC 17 ESC with Electronic Automatic Temperature Control (EATC) 97 Not programmed default of ESC with EATC

1. Preset Button 3 = ICP and RCU identification. This test identifies the software level of the ICP and RCU. The ICP is tested first, followed by the RCU. The display will have two sequences of three codes each. The first sequence is for the ICP, the second sequence is for the RCU. For code identification, refer to the following table:

Item Part Number Description 1 - Product variant code 2 - Tape model 3 - CDR


SOFTWARE IDENTIFICATION CODES Product Type Code Description Product Variant Code Description 21 ICP 07
08
09
10
11
12 EATC with AM/FM, cassette player and CD changer
EATC with AM/FM and cassette player
Manual A/C with AM/FM and cassette player
Manual A/C with AM/FM
EATC with AM/FM and cassette player
EATC with AM/FM cassette player and CD changer 31 RCU 01
02
03 Analog
Digital
Midline 71 Remote climate control 01 LH drive 52 Compact disc/disc jockey 01
02
03
04 Sony® 10 disc
Sony® 6 disc
Clarion® 6 disc
FMS 6 disc

Hi , LOC means radio is locked....1. You can retrieve a set of factory numbers in the radio that enable you to get a unlock code . If it says INOP you will have to leave the key in the ON position or let the car run for at least an hour before you attempt any unlock procedure .INOP means a secondary theft lock due to too many attempts to unlock radio........2. look at the face of your radio and hold down the preset buttons 1 and 4 or 2 and 3 ( depending on year and model , if 1+4 don't work use 2+3, ) for about 10 seconds or until a set of 2 or 3 numbers come up on the display. Write these numbers down.......3. Next press the AM/FM button, a new set of numbers will now show. Write these numbers down. You will then need to call an 1-800 no. with the numbers you have written down to get the unlock code. Try calling a GM dealer and ask them to do it for you, or some sites on internet will get for you for a fee.....4. Once you have the unlock code enter it by pressing the MIN button until display shows the last 2 digits of the unlock code, then press the HR button until the first 2 digits of of unlock code are shown. Then press the AM/FM button to enter the code. The radio will now display SEC and normal function is restored.

Does your GM car or truck Radio display LOC and does not turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles used a theft system to lock the radio when power is lost. This system was used from the ealy 1990's to the early 2000's.

Instructions:

1. If your radio displays the word LOC, you can retrieve a set of factory numbers in the radio that enable you to get a backup unlock code. If the radio says INOP, you will have to leave the key in the "ON" position, or let the car run for at least 1 hour before you attempt any unlock procedure. INOP means a secondary theft lock due to too many false attempts to unlock the radio.
2. Looking at the face of your GM Delco radio, hold down the preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for approximately 10 seconds or until a set of 2 or 3 numbers comes up on the display. Write the numbers down.
3. Next press the AM / FM button. A new set of 3 numbers will now show. Write these numbers down. You will then need to call a 1-800 phone number with these numbers to get the unlock code. There are many sites on the internet that can get it for you- for a small fee. Or, try calling your local GM Dealer and ask for them to do it. Many times they will do it for free. It only takes a minute.
4. Once you have the unlock code, enter it by pressing the MIN button until the display shows the last 2 digits of the unlock code, then press the HR button until the first 2 numbers or shown. Then press the AM / FM button to enter the code. The radio will now display SEC, and normal function is restored.

Also, its possible that you need RESET your GM Radio; this is the procedure: While performing maintenance on your car, you may disconnect the radio from the battery in your GM vehicle. GM cars contain Delco radios that are protected by Theftlock, which locks the radio after it has been disconnected from a power source. Iit can only be reset and unlocked with a car-specific security code. Identifying the security code for your GM vehicle is the only way to reset the car radio and disable the Theftlock protection device.

Instructions:

1. Turn on your car. Your Delco radio will show "LOC" in the LED display.
2. Press and hold down both the second and third preset buttons. Hold these buttons down for at least six seconds.
3. Write down the two- or three-digit code that appears in the LED display.
4. Press the AM/FM button on the radio.
5. Write down the next two- or three-digit code that appears in the LED display. You should be left with either a four- or six-digit number. Turn off your car.
6. Call the Delco radio automated customer support line at 1-800-537-5140.
7. Press "1" and then press the pound sign. The automated voice should respond "Invalid code, try again."
8. Enter the number 139010 into your phone and then press the "*" sign.
9. Enter the four- or six-digit number you wrote down from Steps 3 and 5, and then press the "*" button.
10. Write down the four-digit code given by the automated voice.
11. Turn on your car. Enter the Delco unlock code using the procedure outlined by your GM owner's manual. Normally, the unlock code is entered with the "HR" and "MN" buttons on your radio.
12. Press the AM/FM button. If you have entered the code correctly, your LED display will read "SEC" and the radio will be unlocked.
    

Also can check your Does your GM car or truck Radio display LOC and does not turn on? Chevrolet, Buick, Pontiac, GMC, Cadillac, Oldsmobile vehicles used a theft system to lock the radio when power is lost. This system was used from the ealy 1990's to the early 2000's.
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Instructions:

1. If your radio displays the word LOC, you can retrieve a set of factory numbers in the radio that enable you to get a backup unlock code. If the radio says INOP, you will have to leave the key in the "ON" position, or let the car run for at least 1 hour before you attempt any unlock procedure. INOP means a secondary theft lock due to too many false attempts to unlock the radio.
2. Looking at the face of your GM Delco radio, hold down the preset buttons 1 & 4 OR 2 & 3 (Depending on year and model) for approximately 10 seconds or until a set of 2 or 3 numbers comes up on the display. Write the numbers down.
3. Next press the AM / FM button. A new set of 3 numbers will now show. Write these numbers down. You will then need to call a 1-800 phone number with these numbers to get the unlock code. There are many sites on the internet that can get it for you- for a small fee. Or, try calling your local GM Dealer and ask for them to do it. Many times they will do it for free. It only takes a minute.
4. Once you have the unlock code, enter it by pressing the MIN button until the display shows the last 2 digits of the unlock code, then press the HR button until the first 2 numbers or shown. Then press the AM / FM button to enter the code. The radio will now display SEC, and normal function is restored.

Also, its possible that you need RESET your GM Radio; this is the procedure: While performing maintenance on your car, you may disconnect the radio from the battery in your GM vehicle. GM cars contain Delco radios that are protected by Theftlock, which locks the radio after it has been disconnected from a power source. Iit can only be reset and unlocked with a car-specific security code. Identifying the security code for your GM vehicle is the only way to reset the car radio and disable the Theftlock protection device. jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); });
Instructions:

1. Turn on your car. Your Delco radio will show "LOC" in the LED display.
2. Press and hold down both the second and third preset buttons. Hold these buttons down for at least six seconds.
3. Write down the two- or three-digit code that appears in the LED display.
4. Press the AM/FM button on the radio.
5. Write down the next two- or three-digit code that appears in the LED display. You should be left with either a four- or six-digit number. Turn off your car.
6. Call the Delco radio automated customer support line at 1-800-537-5140.
7. Press "1" and then press the pound sign. The automated voice should respond "Invalid code, try again."
8. Enter the number 139010 into your phone and then press the "*" sign.
9. Enter the four- or six-digit number you wrote down from Steps 3 and 5, and then press the "*" button.
10. Write down the four-digit code given by the automated voice.
11. Turn on your car. Enter the Delco unlock code using the procedure outlined by your GM owner's manual. Normally, the unlock code is entered with the "HR" and "MN" buttons on your radio.
12. Press the AM/FM button. If you have entered the code correctly, your LED display will read "SEC" and the radio will be unlocked.
    

Also can check 1999-Pontiac-Firebird-Owners-Manual (page 163), there are several information about to lock and unlock.


Hope this help (remember comment and rated this).

Try this, it worked for my 1998 Sunfire and a 1975 Monte Carlo.
Press & hold the 2 & 3 buttons @ the same time for about 10 seconds; a 2 or 3 digit code will appear, write this # down,press & hold the am/fm button for about 10 seconds: another code will appear, write this # down, then call 1-800-537-5140 and enter 202108 followed by the # key, then enter the #'s that you wrote down from your radio followed by the * key. The call will give you a 3 or 4 digit override code. Write this code # down so you have it if you ever need it again. Enter this # into your radio following the instructions in your owners manual. If you get an override code that starts with 0, you drop the 0 when entering the code into your radio.
If you don't have an owners manual, try this, press & hold the hour button until the first 2 digits of your code come up, then press & hold the minute button until the last 2 digits show. Then press the am/fm button. This should reset your stereo. It did mine.
Hope you find this helpful.

get a new one as they are cheap these days!
& not worth the labour costs to try & fix them anymore!
Cheers Rob

i have the original book it says anytime the battery is disconnected it will do the lock up and read SAF on the display when this happens you cant use it again untill you unlock it... to unlock it turn the radio on the word safe will be displayed first press the am/fm button and then press the scan button and hold them down simultaneously until "1000" appears in the frequuency display release the buttons DO NOT UNDER ANY CIRCUMSTANCE CONTINUE HOLDINT THE BUTTONS DOWN OR PRESS THEM ONCE AGAIN THIS WILL CAUSE THE RADIO TO TAKE THE NUMBER "1000" AS THE CODE NUMBER. using the first four radio station buttons enter the code number found on your radio card (the codes you have) use button 1 to set the first digit of the code button 2 to set the second digit etc. the first digit of a four digit code must be "1" if your code number has three digits the first digit on the display must be set blank. Once the code is shown on the display press and hold the am/fm button and scan button simultaneously until the work safe appears in the frequency display release the buttons a radio station frequency will automatically be displayed ... MAKE SURE YOU PUT IN THE RIGHT NUMBER OR YOU WILL LOCK UP THE RADIO AGAIN AFTER 2 TRYS AND WILL HAVE TO WAIT AN HOUR BEFORE YOU CAN RETRY IT. IF YOU LOOSE THE CARD WITH THE NUMBER SEE YOUR AUDI DEALER