Question about 1998 Cadillac DeVille

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How to disconnect anti theft system on my 97 caddilac devile

Just bought car was told it has a parasitic draw which is causing the batt. to die everyday also the alarm goes off and doors lock automatically whenever batt. is connected

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Check if any interior lights left on ,the trunk is the usual one that gets forgotten, have battery tested for charge holding and that the alternator is charging correct voltage the alarm and door locking are a symptom not the problem which is in the charging/battery

Posted on Mar 25, 2014

  • steve Mar 25, 2014

    check if any interior lights left on ,the trunk is the usual one that gets forgotten, have battery tested for charge holding and that the alternator is charging correct voltage the alarm and door locking are a symptom not the problem which is in the charging/battery



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Posted on Jan 02, 2017

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SOURCE: 1994 cadillace anti theft system

I just had this same problem with a '96 . do you have a vats key in your '94? you need to bypass the VATS system. read some of the blogs on this site and it will tell you how to do it. I fixed mine with a $2 resistor from radio shack.

Posted on Oct 12, 2008

  • 3 Answers

SOURCE: How can I bypass a anti auto theft system on my 1990 cadillac seville?

I Have A Seville 1990, When That Happen To Me I Got The Inginion
Replaced Problem Solved. What Is Happening Is Your Key Has A Chip And That Chip Is A Resister And When The Valve Is Not Sented To The Computer It Disengages the Fuel Pump And Than Tells You To Wait. Soon All That Will Happen Is You Will Get The Wait 3 Mins And It Will Never Start, A Good Locksmith Can Take Care Of This For You And That Will Save You Some Money. Cause If You Go To The Dealer Ouch They Will Hit You Up. But I Asure This Is How It Will Happen Cause It Is How It Happen To Me
And Sorry There Is No By Passing The Computer

Posted on Dec 25, 2008

  • 73 Answers

SOURCE: Dash reads start disabled;due to theft sysytems;wait three minut

did you replace the fuse.if so try to get the alarm reset location,it could be in the stupidist place like my pathfinder you have to put the key in the tailgate and turn it to glass side and hold it for 20 seconds.and then hit the hidden reset switch under the rear carpet.

Posted on Feb 26, 2009

  • 2 Answers

SOURCE: car will not start anti theft system acting up wont let starter

Cadillac dealer can by pass that anti theft module

Posted on Feb 26, 2010

  • 733 Answers

SOURCE: anti-theft system will not allow car to start -

if the theft light is was flashing on you, put the key in the ignition and turn all the way until the instrument cluster lights up, just don't start the car. leave it like that for aprox. 10 min. or until light goes out. when that happens, turn of(don't take out keys) and try to start car. hope it works.

Posted on Jul 03, 2010

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What would cause a batt drain on a 1998 vw jetta after sitting over night

Alot of things. Could be a short or a bad diode in the alternator. Or even as simple as a bad relay.

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What kind of car are you asking about and are you buying it or do you own it? Most times that a battery is disconnected is to prevent drain, usually a parasitic drain caused by computer, if storing for a long period of time or many times the disconnect is to try to clear a computer code. The problem with doing this can cause the computer to do an anti theft lock out that will prevent the car from starting. Especially a Chrysler or Dodge.

Jun 09, 2015 | Cars & Trucks

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I have a parasitic draw that kills my battery and has been diagnosed as coming from the GEM module. I have bought a new GEM and replace and reprogrammed it but I still have a parasitic draw. Any sugge

I would try a known good battery first. A marginal one will cause this type of problem. You can use the parasitic draw current and calculate your battery life. To do this you need to take into account all the parasitic current loads. Also it may take an hour for all loads to shut off completely. Be sure your GPS in disconnected. Disconnect each of the loads one at a time to find out which output is the culprit. This is a very difficult way of doing it but without the proper current measuring tools it is about the only way. When all loads are disconnected and it keeps on drawing then it is the GEM module itself assumning that is the line you are measuring. Not all replacements are good.

Jan 11, 2015 | 2003 Ford Explorer Sport Trac

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New battery draining overnight

That is only 10 milliamps-much less than the normal milliamps required for the computer memory, radio presets, clock, and the security theft system. Those normally carry approximately 50 milliamps (0.05 amps). The drain must be elsewhere. Youtube has some videos on locating "parasitic drains". Or if you google it, probably a lot of hits.

Feb 15, 2014 | 2004 Chevrolet Aveo

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Maybe shouldn't answer and wait for someone to tell us both what BFC means, but it would not be for the BCM. Sounds like what some cars call the IOD fuse-ignition off draw-the small battery draw that is used for the computer memory, radio pre-sets, and the clock, theft alert system. Believe it would be about that same draw as yours, not enough to drain a battery. Still have your owner's manual? It should have a listing of the fuses.

May 23, 2013 | Cars & Trucks

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How do i reset the anti theft system on 1996 caddilac deville

There is no reset, it does this every time you lock and unlock the door or put the key in the ignition

Jul 27, 2012 | Cars & Trucks

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97 f150 4.6 wont start after it stalled due to the ac pump seizing up and causeing the engine to stall

Was the battery disconnected when the pump was replaced. It sounds like the anti-theft immobilizer needs re-pairing to the key.

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Feb 18, 2018 | Ford F-150 Cars & Trucks

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97 checvy astro 4.3 6cyl. I replaced battery, Starter and the batt wont hold a charge. Is it possible to check the wiring from the alt to the starter without having to remove the alternator?

Yes, If you have a volt meter, jump and start engine, with engine running you should have approx 13.5 to 14.2volts that would tell me that batt is getting charged when engine is running. you said new batt would not hold a charge, I would be thinking about a parasitic draw(small amount of power) that in time will drain batt. things to look for are glove box lights, under hood lights that dont turn off. one easy way too see if you have a draw is to disconnect one batt cable, now use a regular (12volt non-self powered) test light and touch one end to batt cable and the other to empty batt terminal, with no light switches on and doors closed, this test light should not light and if it does then you have a drain on batt that will kill it say overnight.

Feb 12, 2011 | Chevrolet Astro Cars & Trucks

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