1995 Chrysler LHS anti-theft system

Tiny
LHSREBUILDER1
  • MEMBER
  • 1995 CHRYSLER LHS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
One day I was driving my lhs and the anti-theft light came on and my gauges stopped working. When the anti-theft light is on I can not get the car to start when it goes off the car starts how can I reset the anti-theft system
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Saturday, October 31st, 2009 AT 4:21 PM

3 Replies

Tiny
CH112063
  • MEMBER
Chrysler used a small black box that was attached to your keys to turn it on or off. A key fob or key fab, I forget but it has a battery and is a wireless control with a battery in it. Call your local dealer or even an alarm installer shop, They can help you with this annoying problem. If you still have or can locate your owners manual, it will also help.
Ok It can be disabled and not used, also. There is an anti-theft module you may be able to unplug in the underhood power center, or inside behind the glove bos. It must be unplugged while the car is running to disable the alarm. I think, this was 94, it should be the same.
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Sunday, November 8th, 2009 AT 8:25 PM
Tiny
NGOODWATER
  • MEMBER
My car won't start today and know it has something to do with the anti-theft we have changed the key fob batteries and even unhooked the car battery And hooked it all back up, the fuses are good, one minute we can manually lock doors off of door and now it won't but fob can, it's being goofy and car won't run longer than a sec due to this anti theft system. How can I get it unplugged or reboot to get my car to run? It's a 1995 Chrysler LHS
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Sunday, September 17th, 2017 AT 1:26 PM
Tiny
CARADIODOC
  • EXPERT
You need to start a new question specific to your vehicle. This one is eight years old and shows up on our list as having already received a reply. Unlike other sites where anyone can add a reply, this was a conversation between two people. None of the other experts are going to see your addition or have a chance to reply. That won't get you the help you need.

When you post your question, PLEASE list the engine size, mileage, and transmission type. That helps us find the correct wiring diagrams, and make judgments as to most common suspects and likely fixes. Also be sure to describe all the symptoms and related history leading up to the problem.

You also need to disregard the original reply. There is no such thing as unplugging a module to disable the anti-theft system. If it was that easy to do any car thief could do it, so what would be the point in having it? That module is the "RKE" module, remote keyless entry module. It has nothing to do with the anti-theft system other than receiving the signals from the key fob and sending them to the other computers that use that information. The anti-theft system resides in the Engine Computer AND in the Body Computer. When you have that system, you can replace either computer then just drive off into the sunset. When your car did NOT come with that optional system, you have a lot to worry about when replacing either computer. You must install one that doesn't have anti-theft programming built in. If you install a used computer with anti-theft, it will immediately teach it to the other computer. From then on both will be looking for the turn-off signal before the engine will run, but it's never coming. At that point you have to replace both computers at the same time with ones that don't have anti-theft programming. Once one upgrades the programming on the other one, it can't be undone. Those computers will only work from then on in a car that has the anti-theft system. New or rebuilt computers from the dealer always do not have anti-theft programming, so they can be put into any car. If will learn the anti-theft programming from the other computer if is has to. When you get a used computer from a salvage yard, the people there rarely know if the donor car had the anti-theft system, so you're gambling on it working, or having to buy two more computers.

The first place to look when you have any intermittent problems with power windows, power locks, power mirrors, or the anti-theft system is the wire harness between the door hinges. Look for broken or frayed wires that are touching each other. The anti-theft system can be turned off by unlocking a front door with the key, and as such, there is a switch built into the latch mechanism on newer cars, or linked to it on older ones. Wires for that switch run through the door hinges too.
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Sunday, September 17th, 2017 AT 4:29 PM

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