Daughters car battery went flat now require security code for alpine car stereo engine number is 4A9228091

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Car Radio Stopped Working after the Battery Died

cartech.about.com > ... > Car Radio Components FAQs, and More
First your battery went dead, and now your car stereo is dead, and it's really ... or charge, and you're lucky, then you may find that your car radio fuse is blown.

radio won't work after new battery installed - Car Talk

community.cartalk.com/.../radio-wont-work-after-new-battery-installed
Nov 30, 2011 - Today the dealership did a tuneup, replaced the timing belt, and put in a new battery. I started my car and the radio did not work. They went out ...

Another Flat Battery - Radio No Longer Works - Hyundai Forums ...

www.hyundai-forums.com/.../128744-another-flat-battery-radio-no-long...
Jul 18, 2011 - Also now the battery has been recharged the redio will not work. .... Mybattery went flat, took it out and went to a battery shop who charged it up ...

Dead battery..now radio won't work - Honda CR-V Owners Club

ALPINE radios are very difficult to decode.

To see if this code is available please  POST ANOTHER QUESTION

 ALL the LETTERS+NUMBERS on ANY LABELS ,BARCODES or STAMPED IN THE METAL CASING
The main seial number is required and ususally starts with either A or AL

Check the glove box in your car and look for a card that carry the code. If there's no card, pull the radio out and get the serial number on the side and then contact the manufacturer or the dealer and ask them the unique code for that specific serial number. They are the people that could only provide you the code.

The radio code that you need is also called the "Anti-theft" code. This code is unique with every car radio so that it would become useless once stolen.

Have a great day!

If the car stereo is stock then contact the car company for codes...if its not then contact the stereo company....

Hello,

This is to inform you that no one could provide you the code that you need. That code is also called the 'Anti-theft' code which is unique with every car stereo.

You need to check the glove box that's in your car and look for a card. That card should carry the anti-theft code for your stereo.

If you could not find it, you need to pull out the stereo and get the serial number of the stereo on the side of it. Then call the car dealer or the manufacturer. They are the only one who could provide you the unique code for your stereo.

You would get this problem once the battery run out of charge, once the battery has been removed or once you change your alternator.

Hope this helps and have a great day!

Sony CDXM8800 Radio Codes are available from the website - www.instant-radio-code.co.uk

Power On The Unit And Hold The M Button. This Will Display The Serial Number Across The Screen. Once You Have Noted The Serial Number Call Your Local Dealership And Ask For The Security Code. They Will Ask For The Serial Number You Noted And Then Give You The Code For Your Exact Unit. The Code Isn't The Same For All Of The Units As It Is For Security Purposes.
Hope This Helps You,
Sincerely,
Michael Scott

I have a manual for this type of stereo and it states:
Turn ignition switch to accessory position and enter code: 2 3 3 5 6
I have tried but not had any luck!!

Look, what is the serial number? what is the car model? search it in google and you'll find, type: "answer (your car model or serial number) radio code" in the search adress

I didnt think alpines had codes?

are you sure it has one?

sounds more like a connection problem