Question about 2000 Volvo S40

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Battery died and anti theft code went into effect

Anti theft code

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  • cinhegedus Jul 31, 2008

    I had an alternator and battery replaced and my 1998 pontiac radio is now locked and I don't know the code any thoughts

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I ha,d baterry replased and my SC-805 radio is now locked and I don,t know the code...The radio is OFF ...

Posted on Aug 22, 2008

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Call your Volvo dealer with the VIN number. They can give you the code and advise if you can reset it yourself or if you will have to take it in.

Posted on Jul 19, 2008

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On my 2011 dodge journey my battery died then I jump started it and now my radio and all that controls my climate and won't come on what would be the problem??


with the battery dying the radio and equipment that has anti theft circuits have had the anti theft codes activated . You will need a code for the radio before it will work again and for anything else may be a reset of the CPU using a scanner will be the answer.

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Anti theft system


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I hve a 2002 f150. i let my battery die. and when on a charger over night it will start and when not it wont. when not on a charger the anti theft light blinks more than normal. is it my battery or the...


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Feb 23, 2012 | 2002 Ford F150 Regular Cab

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My battery died so i replaced it and now my radio won't come on. Tried holding down power button, turning on and off ignition. Still has no power. the battery was out of the car for about 4 hours.


If your radio has anti-theft system you will have to go to the dealer and get the accss code to reactivate the radio if you dont have the code already. GM vehicles with anti-theft radios will lock when power is lost to the system if the radio is not turned off prior to battery disconnect or dying.

Jul 24, 2011 | 2005 Chevrolet Cobalt

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The battery died on my 2001 eclipse, now the radio only says ''off''?


This is the anti-theft device on your factory radio. When the battery died, the radio thought it had been removed from your car and went into anti-theft mode. When you turned the car back on, the radio should have read "CODE" on the display, at which point you need to enter the factory anti-theft code. After 3 failed attempts at entering the code, it will simply read "OFF" and the radio is locked.

At this point:
- find your factory anti-theft code - it should be in your owner's manual, or you can contact a dealer to retrieve it
- turn the key to the ACC position (radio and accessories on, but engine is off)
- turn on the radio so the display reads "OFF"
- let the car sit for 1 hour
- radio will turn off automatically and reset
- turn the radio on again, and it should read "CODE"
- enter the factory anti-theft code

Make sure you have the code before starting the procedure. To enter the code, use the radio preset buttons. For example, if your code is "4321", hit Preset #1 button four times, Preset #2 three times, Preset #3 two times, and Preset #4 one time. Then hit the "Tape" or "CD" button. Radio should now be unlocked.

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My question is- my 2001 Mitsubishi Galant has the anti-theft system. The battery went down because it hasn't been driven in a couple of weeks. I can boost it off & drive it for just a mile or so &...


Usually if it is the anti theft system it should not start with a boost, I would suggest first check the basics have the altenator tested with a voltmeter the volts should read 13.5 to 14.5 if not you probbably have a bad altenator, loose belt, or bad or loose battery connections. Since the battery went completly dead I would suggest having it recharged and tested.

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2 Answers

No power in any systems - anti theft?? How do you reset?


no power usually suggest battery fuse or wiring. anti theft keeps the car from starting but may have also killed the battery. check the battery

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