We disconnected and installed a new battery on our audi a4, now the radio doesnt work nor do the functions on the drivers door?

1999 Audi A4 2.8 V6 engine.
Starter - removing and installing
Caution!
Disconnect the battery Ground strap before working on the electrical system.
Notes:
1. Before disconnecting the battery, determine the correct coding for the anti-theft radio.
2. Once the battery is reconnected, check and activate the vehicle's electrical equipment (radio, clock, comfort and convenience features, etc) as described in the Owners Manual.

I know you can that you can change this by simply hooking up a scan tool for specific year. There are language options accessible for situations like this. Here is a sample of what can be changed using VAG 5052 or equivalent scanners.

Coding

• 0?xxxxx: Model
  • 1 = Lamborghini
  • 2 = Audi A3 (8P)
  • 3 = Audi A4 (8E)
  • 4 = Audi A4 Cabriolet (8H)
  • 5 = Audi A6 (4B)
  • 6 = Audi TT (8J)
  • 7 = Audi R8 (42)
• 0x?xxxx: Treble Speaker Monitoring inactive
  • 0 = Front Treble Speaker Monitoring inactive active (NOT Audi A4 Cabriolet)
  • 1 = Front Treble Speaker Monitoring inactive inactive (ONLY Audi A4 Cabriolet)
• 0xx?xxx: Sound Characteristic
  • 0 = Sound Characteristic linear
  • 1 = Audi A4 (8E)
  • 2 = Audi A6 (4B)
  • 3 = Audi A4 Cabriolet (8H)
  • 4 = Audi TT (8J)
  • 5 = Audi A3 (8P)
  • 9 = Sound System
• 0xxx?xx: Telephone/Telematic
  • 1 = Telephone not installed (Remote Feed Voltage for Microphone active)
  • 2 = Base Plate (Temic - Remote Feed Voltage for Microphone inactive)
  • 3 = Base Plate (Cullmann - Remote Feed Voltage for Microphone inactive)
  • 4 = Base Plate (Nokia - Remote Feed Voltage for Microphone inactive)
  • 5 = Telematic Europa (Remote Feed Voltage for Microphone inactive)
  • 6 = Telematic US (Remote Feed Voltage for Microphone inactive)
  • 7 = Base Plate diagnostic capable with Comfort Control
• 0xxxx?x: Equipment I
  • 1 = Tuner not installed
  • 2 = Digital-Radio installed
  • 3 = Satellite-Radio installed
  • 4 = Satellite and Digital-Radio installed
  • 5 = Analog Input (AUX) installed
  • 7 = Satellite-Radio & Analog Input (AUX) installed
• 0xxxxx?: Equipment II
  • 1 = TV-Tuner/CD-Changer/Multi-Function Steering Wheel not installed
  • 2 = TV-Tuner installed
  • 3 = CD-Changer installed
  • 4 = TV-Tuner and CD-Changer installed
  • 5 = Multi-Function Steering Wheel installed
  • 6 = TV-Tuner and Multi-Function Steering Wheel installed
  • 7 = CD-Changer and Multi-Function Steering Wheel installed
  • 8 = TV-Tuner and CD-Changer and Multi-Function Steering Wheel installed
    
    

Adaptation Channel 001: Tire Circumference The tire circumference is beeing adapted in "mm".


Channel 002: Wheel Pulse The wheel pulse describes the amount of wheel pulses per revolution.
If value 0 is entered the system calibrates automatically itself after several kilometers and inputs a value.

• 43 = Audi A3 (8P) / Audi TT (8J)
• 45 = Audi A4 (8E)

Channel 003: Language (Screen)

• 0 = German
• 1 = English (UK)
• 2 = French
• 3 = Italian
• 5 = Spanish
• 6 = Portuguese
• 7 = English (UK)

Channel 004: Back-Up Camera

• 0 = Back-Up Camera not installed
• 2 = Back-Up Camera installed

Channel 005: Speed Threshold (Video Input)

• 0 = max. 0 kph or 0 mph
• 1 = max 5 kph (Standard for Europe)

Channel 007: Options Channel 008: Volume Characteristic Channel 010: Region

• 0 = Europe/North America
• 1 = Australia/South America
• 2 = South Africa

Channel 011: Language (Speech Recognition)

• 0 = German
• 1 = English
• 2 = French
• 3 = Italian
• 5 = Spanish

Channel 018: Start Screen The start screen setting has to correspond with the control module coding, e.g. a S3 start screen doesn't work with an A4 coding.

• 0 = Standard Start Screen
• 1 = Audi S3 Start Screen
• 2 = Audi S4 Start Screen
• 3 = Audi RS4 Start Screen
• 4 = Audi TT Start Screen
• 5 = Audi R8 Start Screen

Channel 065: Read Test Channel 066: Self Test Channel 067: CD/DVD Drive

• 000 - Normal/Eject-Button enabled
• 001 = Eject CD/DVD (will not be saved)
• 255 = Eject-Button disabled/locked (Anti-Theft-Protection)

Channel 068: Screen Test Values will not be saved, they only act as initiation for each Test Picture.

• 0 = No Test Picture
• 1 = Test Picture: Red
• 2 = Test Picture: Green
• 3 = Test Picture: Blue
• 4 = Test Picture: White
• 5 = Test Picture: Black
• 6 = Test Picture: Checkerboard
• 7 = Test Picture: Checkerboard (inverted)
• 8 = Test Picture: 64 Gray Scales (vertical Bars)
• 9 = Test Picture: Special

Channel 069: Display Mechanism

• 000 = Display closed
• 001 = Display open
• 200 = Display half open (Obstacle)
• 255 = Position undefined

Channel 070: Display Brightness

• 0 = 0% Brightness (Display OFF)
• 1 = 20% Brightness
• 2 = 40% Brightness
• 3 = 60% Brightness
• 4 = 80% Brightness
• 5 = 100% Brightness

Channel 099: Transport Mode Only applies to models without Gateway/Diagnostic Interface for Databus.

• 0 = Transport Mode inactive
• 1 = Transport Mode active

Channel 111: Reset

• To perform a system reset/restart save 1 as new value.

Channel 114: FM Frequency

• Range: 875...1080

Channel 117: Signal Test (Output)

• 0 = Fader Center & Balance Center
• 1 = Fader Front & Balance Left
• 2 = Fader Front & Balance Right
• 3 = Fader Rear & Balance Left
• 4 = Fader Rear & Balance Right

Channel 136: Driver Position

• RNS-E Basic
  • 03226 = Left-Hand-Drive (LHD)
  • 02632 = Right-Hand-Drive (RHD)
• RNS-E High/US
  • 00005 = Left-Hand-Drive (LHD)
  • 00013 = Right-Hand-Drive (RHD)

I would start with driver door lock , not the lock cyllinder , but lock assembly which is inside the door and have switches build in to it.

disconnecting the power will cause the airbag warning light came on as a warning that you may have a faulty unit,can be reset if you have the machine to do it(your local dealer will have one)The radio will require you to put in the code to restart it....

Open the drivers door with the key. Look on the door for the unlock button and press it. This will unlock all doors and the boot. Use the handle on the boot to open it.

That's not a problem. It should function that way to keep your car from draining the battery.

sorry to say, you will need to take it in, it needs to be hooked up to their computer to reset and have it start up poperly. It just like a pc when it crash it will try to start in safe mode until you select "Normal" start up

Unfortunately, if I am reading this problem properly, you have a Blaupunkt radio in your Audi. Disconnection from power source and reconnection without proper (un)locking code will result in the permanent disabling of said radio.

It's a common problem in factory Blaupunkt radios installed in Volvo's, BMW's Audi's, etc. A very effective anti-theft mechanism indeed!

Yes. I know of two units out there: Denison's IceLink, and the Phatnoise box (or Phatbox, as some call it). I believe both install the same way. You figure out where you want the iPod connector (say, glovebox). Pull the stereo out of the dash, disconnect the CD changer (you'll lose the changer function with these but who cares?), and plug the adapter cable into the changer's port. It'll allow the iPod to play through the factory stereo, and will allow you to control the iPod with the buttons on the factory stereo.

ok you will see to screws at the back unscrew them and take it out then smash it becase it is gay