Re: The battery in my A4 died, now my radio doesn't work
THERE ARE ARE NORMALLY TWO PROBLEMS THAT OCCUR WHEN THE BATTERY GOES FAULTY ON THESE AUDI CARS.THE FIRST BEING THAT THE DISPLAY OF THE RADIO WILL JUST TURN RED BUT WITH COMING ON.THE FUSE AT THE BACK OF THE RADIO WILL BE THE ONE DEMAGED BUT YOU WILL NEED THE RADIO CARS TO TAKE OUT THE RADIO FOR THE REPLACEMENT OF THIS FUSE. THE SECOND ONE IS WHEN THE RADIO WILL REQUIRE THE ANTI-THEFT CODE THAT NORMALLY COMES WITH THE BOOKLET,BUT FOR ANY REASON YOU CAN NOT GET THIS CODE JUST GO TO YOUR NEAREST DEALER THEY WILL GIVE YOU THE CODE WITHIN MINUTES.
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Check fuses first - quite often cigarette lighter can come loose with repetitive tywisting when chargers etc removed and this will create a short and blow the fuse.
Could be security coded if battery has been disconnected so you'll need to check owners handbook for reactivation code or contact dealer. I know Toyota ask for your details and matcvh against registration to ensure you're not trying to get a nicked stero working !
Pull out radio unit and check for loose wires on the back. Circuit tester on the red and yellow wires will tell you if power getting to it. (Only one works with ignition, other is permanently live)
Fuse on back of actual stereo blown - will need to remove and have a look.
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....
i had same problem with 01 a4 bought from arnold clark .kicked up a fuss and they got it repaired for me, this was nearly 2yrs ago and it's been perfect since so i would say all you need is good audio engineer. by the way audi also told me the radio needed replaced
I had the exact same problem on my 1998 Audi A4 Quattro Sedan I just purchased. I read a couple of other posts that said to try looking for the radio code in the spare tire compartment in the trunk. Sure enough on the right hand side of the compartment was a information label and on it someone had written the code 1174 in pen. I then left the key in the ignition and the radio on for an hour. Then I pushed the DX and FM1/2 button and the same time until the "1000" number appeared on the display. Then I pushed in the code 1174 using the 1 - 4 tuner buttons. For example the number 1 key I pushed until the number 1 appeared. Then pushed button number 2 until the number 1 appeared, pushed button 3 until the number 7 appeared and button 4 until number 4 appeared. After I had the code 1174 on the display, you again push the DX and FM1/2 button at the same time and the radio unlocked and worked perfectly. I hope that this helps. I have the Delta (Bose) AM/FM Cassette radio in my car. Good Luck!!
Holding the scan and rds buttons when the radio says SAFE. Then the 4 dashes should come up, enter the code using the station 1-4 buttons. If this does not allow you to enter the code try pressing scan and TP.