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Anti theft audio system shows loc, do not have password

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2003 Saturn Vue with a identity anti theft system. Replaced my battery a few months ago. Couple weeks ago noticed a little difficulty starting up. Last week wouldn't start just clicking noise. Jumped...

Anti-theft system has nothing to do with it . Battery cables , maybe , Park neutral safety switch possibly ! With anti-theft system problem you wouldn't a click or anything , that is if the anti-theft disables fuel or the starter . Plus the SECURITY light would be on if it were a anti-theft system problem . Your best bet , take it to a qualified repair shop that knows how to do starter circuit testing >
Starter Voltage Drop
How to voltage drop test starter motor circuit

And what's this identity anti theft system ? No such thing ! The vehicle has a content theft an vehicle theft deterrent system !
This system disables fuel not cranking of the engine. The VCM/PCM will not disable the fuel due to any BCM message for the remainder of the ignition cycle.
If the VCM/PCM does not receive the same password from the BCM as the last learned one, the vehicle will start and then stalls due to the Fuel Lockout.

May 17, 2017 | Cars & Trucks

1 Answer

Myh 1998 cadillac deville will not turn off even after the keys are out... the engine is still running how do i stop this or fix it!!

Sounds like the ignition switch is broken. Pull the fuse for the fuel pump, and the engine will stop. Then you will have to disconnect the battery. Make sure the anti-theft or theft-loc system is off before you disconnect the battery.

Aug 21, 2011 | Cadillac DeVille Cars & Trucks

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I have a 07 chevy tahoe 5.3L now its showing me service anti-theft... i turn my key and nothing happens it just shows service anti-theft..

Anti theft security systems are tricky. Expensive to fix and harder to diagnose. I've had the best luck with just bypassing the entire system and never worrying about it again. There is tons off info and some "do it yourself" solutions on this site

May 17, 2011 | Chevrolet Tahoe Cars & Trucks

1 Answer

Radio display is showing Loc, had problems with battery cables arking causing anti theft loc to lock up radio causing radio not work.

Try following the directions posted at How To-

Be sure those cables are fixed. You can get new terminal ends at any parts storre if the originals are rotted away. They install without soldering.

Sep 07, 2010 | 1998 Buick LeSabre

1 Answer

Had a dead battery, it was removed and replaced. Now radio message shows LOC. Please help with a code to unlock the radio and clock, etc.

That code is an anti theft measure, the only way to obtain a radio code legally is to look for it in the car's papers or go to a dealer and they will provide it to you for a small fee - ~ $25.

Aug 09, 2010 | 1995 GMC Sierra C1500

1 Answer

07 ford focus anti theft light flashes all the time

If the security or anti-theft light is flashing when you attempt to start your car, and the engine does not crank or does not start, you have an anti-theft problem. The system may not be recognizing your key's key-less entry signal, or there may be a fault in the anti-theft module or wiring.
There is a reset procedure to stop this anti-theft light flashing.many a times this helps The reset procedure is as follows:-- Reset the alarm by locking and unlocking the drivers side door.Do this a couple of times and then check it will reset the factory security system . If the reset procedure does not helps then its time to get the anti-theft system checked.There is a short circuit in the anti-theft system wiring. For more detailed help on this anti-theft light blinking issues please click on the link below
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May 18, 2010 | Cars & Trucks

1 Answer

Radio Anti Theft Loc - Can't remember password

The feature can not be bypassed, it's built into the radio. You will have to bring it into a dealer. They can retrieve a code they will have to call in. Then they get another code to release the radio. Sorry, they did this this for theft reasons.

Nov 29, 2009 | 1998 Oldsmobile Intrigue

1 Answer

Vehicle theft deterent moduel has issues the theft light stays on and the radio and lights dont work

check fuse and power to radio also ur key might be causing the problem or key cylinder the radio has a built in anti theft system some aftermarket and worn down keys set off the theft deterent or bad key cylinder or theft loc on radio activated have ur truck scanned some auto stores such as auto zone / advanced auto scan for free it will give u a start point

Oct 31, 2009 | 2003 Chevrolet Silverado 1500

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