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Will replacing the battery on 2002 saturn effect your security system

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If you piggy-back the batterys, you eliminate the possibility of security system problems.
Get 2 pieces of strong wire and wrap one round the bottom of each terminal on the new battery. While the old battery is still connected, wrap the other end of the wires round an accessible part of the car's battery clamps (live first). You will see a small spark when you make the final connection. Now loosen the bolts holding the clamps to the old battery's terminals (careful not to disconnect the wires to the new battery) and lift the old battery out of the car. drop the new battery in. Before fitting the clamps, tighten them a little then tap them onto the terminals. Tightening the clamps first makes the clamp grab the terminal before it goes all the way on. You can now remove the wires from the battery and clamps, loosen the clamps and, without removing them, fit them correctly.
Good luck.

Posted on Apr 05, 2011

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  • Ken Mac
    Ken Mac Apr 07, 2011

    side post battery

  • martin-r
    martin-r Apr 07, 2011

    Oh, not much help then! maybe it will upset the stereo but the security should be ok, If you sit in the car with the doors shut, turn the ignition on and hold the lock button on the key fob for 10 seconds, the vehicle will lock and unlock itself to signify the security system has reset. (I know this works for the UK version of the vehicle)

  • Ken Mac
    Ken Mac Apr 13, 2011

    leave the car running is how i changed my battery.

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How to reset the security system on a 2002 Saturn l200


i know what issue is.. it happen to my car, i found a module that you can install yourself and it will bypass the security system.., check it out they have great customer service .. I bought it and my car runs great to this day. hope this helps
http://vatspasslockpasskeysecurityhelp.com/ Do It Yourself GM Security bypass

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Resetting security system on 2002 Saturn


Did you replace any parts?? Lock cylinder, ect? Try turning ignition on and let it on for 10 minutes and then turn off. Repeat this 3 times. If system just went crazy( wont let you start vehicle) there may be larts that need to be ficed/replaced.

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2001 saturn lost keys to it. Got it to crank cut right back off secrity lights on bought a brain box for it and got 2keys with it. Still want crank I need to know what to do t could the box be bad ..


No ,the box is probably not bad , but you need to have it programmed . The dealer is the only one that can do that ? The keys don't matter .
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The passlock system is a vehicle theft deterrent system which deters drive-away vehicle theft by disabling engine operation if the ignition lock cylinder is not rotated with the proper mechanically cut key.
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The ignition switch contains a magnet mounted on the lock cylinder and a passlock sensor assembly which consists of security hall effect sensor, tamper hall effect sensor, and output resistors. A drill proof metal shield is also staked over the sensor housing.
The passlock sensor mounted to the ignition switch assembly is located inside the upper right side of the steering column. The passlock sensor contains two hall effect sensors: a tamper hall effect sensor and a security hall effect sensor. The tamper hall effect sensor is mounted on top of the security hall effect sensor. Should someone attempt to defeat the system by use of magnetic experimentation, the tamper hall effect sensor will activate first.
The BCM has the passlock controller integrated into it which controls the majority of the security systems logic. The BCM reads the data from the passlock sensor continuously. If the data is correct and has been received by the BCM within a specified time, the BCM will send a coded password to the PCM. The PCM will then allow the fuel injectors to operate.
The coded password for the security system is sent from the body control module to the PCM via the class 2 data link. If the password is correct and received within the specified time, the PCM will allow the fuel injectors to operate.
Sorry but you can't just replace parts , you need to know how the system works . You need to take this to a ASE certified repair facility that knows how it works .

Oct 10, 2015 | Saturn Cars & Trucks

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I changed the battery on a 2002 Saturn l200 and now the security lights blink continuously,the car turns over but won't continue running


Remove the key, wait 10 minutes, try again. You must wait that long for the passlink system to reset. Make sure that you are using the keys that were sold with the car, not an aftermarket key.
If this doesn't fix it, send another message, I have the Saturn technical service manual on this car.

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1 Answer

My 2002 saturn SL2 blew a fan belt and when we went to change it we disconnected the battery now the security light will not stop blinking at all we've tried the whole putting the key turning to on and...


You must turn the key to CRANK then release the key to the ON position without turning it off for the pass key system initialization procedure to work. The security lihgt will not syop flashing if you do not do it this way. It also helps to install a battery charger before doing this so the system voltage does not drop too low while you are waiting for the security light to time out.
You may also have to repeat the procedure three times before the engine will start.

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2002 Saturn SL1, 72K miles. Hasn't been driven in


Single click? More battery is needed. Id change the battery, or slow charge it.
Might also be the security system shutting down the starter. Common on GM vehicles. Heres a link on that. http://vatspasslockpasskeysecurityhelp.yolasite.com/

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after 10 miutes does it reset security and car starts.? probably bad key cylndar. see other posts on how to remove and replace. should fix issue.

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How to reset security after changing battery


The security system shouldn't keep you from getting it out of park. Check to see if the security light is flashing. I can tell you how to reset the security system.

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Must be flashed. This is your security system. Check other GM dealers for better price.

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