Question about 2000 Jeep Grand Cherokee

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Sentry key system is malfunctioning. Is there any way to disable it? The warning light comes on frequently and sometimes the car will start and immediately shut down.

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  • johnd616 Aug 06, 2010

    so far it is working. thanks

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Carefully remove the rubber portion of the key. Once removed you will find a white plastic holder with a transponder held in it. Remove the chip from the holder and glue it to the inside part of the shroud in real close proximity to the transponder antenna that surrounds the front part of the lock cylinder. It is a good idea to try random placings of the chip before making its new position permanent. You can now just use regular flat metal keys that are dirt cheap and I also like their small flat size, just right for a spare in your wallet. Responding to a comment made earlier on this topic, once started the vehicle will remain started even if the transponder is removed. However once turned off,the vehicle will not restart until the transponder is placed back in range of the antenna. One other thing to consider before doing this is insurance issues in the event your jeep is stolen.

Posted on Aug 05, 2010

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Wont start because of anti theft system it used to start for a short time now just turns over


my guess is that you posted all these related posts because you

never read the FSM chapters yet? in immo.>?

read chapter 8Q yet? ill post excerpts, and you can learn how it works?

Guess 2 , you are trying to fix it SCAN tool free? that will never happen, (get one, ? Innova 3160)

Connect the scan tool, crank for 5 seconds, behold , DTC errors

see those. post those and get help, or its all IMPOSSIBLE !!!

yours is KJ 06







Quote:

SENTRY KEY IMMOBILIZER SYSTEM

The Sentry Key Immobilizer System (SKIS) is available as a factory-installed option on this vehicle. Vehicles

equipped with the Vehicle Theft Alarm (VTA) are also equipped with SKIS. The SKIS provides passive vehicle protection

by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition

lock cylinder.

The SKIS includes the following major components, which are described in further detail elsewhere in this service

information:

SENTRY KEY IMMOBILIZER SYSTEM

The Sentry Key Immobilizer System (SKIS) is designed to provide passive protection against unauthorized vehicle

use by disabling the engine after about two seconds of running, whenever any method other than a valid Sentry Key

is used to start the vehicle. The SKIS is considered a passive protection system because it is always active when

the ignition system is energized and does not require any customer intervention. The SKIS uses Radio Frequency

(RF) communication to obtain confirmation that the key in the ignition switch is a valid key for operating the vehicle.

The microprocessor-based SKIS hardware and software also uses electronic messages to communicate with other

electronic modules in the vehicle over the Programmable Communications Interface (PCI) data bus. (Refer to 8 -

ELECTRICAL/ELECTRONIC CONTROL MODULES/COMMUNICATION - OPERATION).

Pre-programmed Sentry Key transponders are provided with the vehicle from the factory. Each Sentry REmote Entry

Module (SKREEM) will recognize a maximum of eight Sentry Keys. If the customer would like additional keys other

than those provided with the vehicle, they may be purchased from any authorized dealer. These additional keys

must be programmed to the SKREEM in the vehicle in order for the system to recognize them as valid keys. This

can be done by the dealer using a diagnostic scan tool or, if Customer Learn programming is an available SKIS

feature in the market where the vehicle was purchased, the customer can program the additional keys, as long as

at least two valid Sentry Keys are already available. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY -

STANDARD PROCEDURE - TRANSPONDER PROGRAMMING).

The SKREEM performs a self-test of the SKIS each time the ignition switch is turned to the ON position, and will

store fault information in the form of a Diagnostic Trouble Code (DTC) if a system malfunction is detected. The SKIS

can be diagnosed, and any stored DTC can be retrieved using a diagnostic scan tool. Refer to the appropriate

diagnostic information



page 68

SENTRY KEY IMMOBILIZER SYSTEM

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental

restraint system before attempting any steering wheel, steering column, airbag, occupant classification system,

seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect

and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge

before performing further diagnosis or service. This is the only sure way to disable the supplemental

restraint system. Failure to take the proper precautions could result in accidental airbag deployment.

The hard wired Sentry Key Immobilizer System (SKIS) components and circuits may be diagnosed and tested using

conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information

includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention,

connector pin-out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods may not prove conclusive in the diagnosis of the Sentry Key REmote

Entry Module (SKREEM), the ElectroMechanical Instrument Cluster (EMIC), the Powertrain Control Module (PCM),

the Programmable Communications Interface (PCI) data bus, or the electronic message inputs used to provide the

electronic features of the SKIS. The most reliable, efficient, and accurate means to diagnose the SKREEM, the

EMIC, the PCM, the CAN data bus, and the electronic message inputs for the SKIS requires the use of a diagnostic

scan tool. Refer to the appropriate diagnostic informatio

Apr 27, 2015 | 2006 Jeep Liberty

2 Answers

Have a 2000 grand cherokee, will be running good,


Does the car stall when sitting still, might just be that the key is worn and wiggles itself out just enough to shut down the vehicle

Aug 30, 2014 | 2000 Jeep Grand Cherokee

1 Answer

Security light stays onJeep Compass


IMMO cuts fuel. that is its job, fix that secuity system.
the FSM covers this.
if you tried both the key fobs , that came with car?
do so... now....!

if not why not?
are you using only a single key , to test this? do so.
no other keys near ignition switch.
do have this, the oper guide?
page 14?

http://justgivemethedamnmanual.com/jeep/jeep-compass-owners-manuals/

next is to read the IMMO sections (immoblizer) in FSM
or alldata.com to find true cause of IMMO tripped.

quote page 14, (it's clear , no?)
SENTRY KEY
The Sentry Key Immobilizer System prevents unauthorized
operation of the vehicle by disabling the engine.
The system will shut the engine off after 2 seconds of
running if an invalid key is used to start the vehicle. This
system utilizes ignition keys which have an electronic
chip (transponder) embedded into them. Only keys that
have been programmed to the vehicle can be used to start
and operate the vehicle.
The Sentry Key Immobilizer System does not need to be
armed or activated. Operation of the system is automatic
regardless of whether or not the vehicle is locked or
unlocked. During normal operation, the Theft Alarm/
Immobilizer Light will come on for three (3) seconds
immediately after the ignition switch is turned on for a
bulb check. Afterwards, if the bulb remains on, this
indicates a problem with the electronics.

If the bulb begins to flash after the bulb check, this
indicates that an invalid key has been used to start the
vehicle.
Both of these conditions will result in the engine
being shut off after two (2) seconds of running.
Keep in mind that a key which has not been programmed
is also considered an invalid key even if it is cut to fit the
ignition lock cylinder for that vehicle.
If the Theft Alarm/Immobilizer Light comes on during
normal vehicle operation (vehicle has been running for
longer than 10 seconds), a fault has been detected in the
electronics and the vehicle should be serviced as soon as
possible.
14 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

end qoute:

Feb 26, 2014 | 2007 Jeep Compass Limited

1 Answer

After replacing battery, the stater motor doesn't start


The starter motor should be replaced. The selenoid in the starters frequently go without warning and then the starter will do nothing until you replace it (remember to disconnect the battery negative cable first). Also if your car is financed and if you are behind one or two payments they may have remotely disabled the car and you will have to call them and work something out to get the car "released" so it will start.

Sep 08, 2017 | Cars & Trucks

1 Answer

The security light comes on but it wont even turn over


When the light is on, the security feature of immobilizing car-wont allow starting-is active. Pretty difficult and time-consuming to permanently disable the security system, but some have figured it out and published their research over the internet. If yours gets worse, if the light stays on more frequently, you may want it permanently removed. I think it was a ruse by GM and car makers to add cost, and cause more frequent repair visits, but that just me.
Google "disable vehicle security system" or some such, to see results.

Dec 29, 2012 | 1999 Oldsmobile Intrigue

1 Answer

I have a 2005 Saturn Vue which battery warning light sometimes come on randomly and then goes for several weeks now. As it came on more frequently I thought the battery was dying so I replaced it two days...


If the battery light comes on while your are driving than the alternator is not charging. The battery light comes on to tell you there is a problem with the charging system not the battery. It is normal for the light to come on when you turn the key to the run position and then it should go out shortly after the engine starts. When the light is on check the voltage at the battery if you have less than 13 volts the alternator is not charging.

Nov 28, 2012 | Cars & Trucks

2 Answers

Abs light stays on and a yellow triangle warnng light


On occasion an ABS light will come on when a brake light is out. So check your brake lights first. Your ABS light is on because there is a malfunction in the ABS system. Is your brake warning light and your ABS warning light both on? This would be an indicator of a major malfunction in the ABS system. Stop driving the vehicle and fix this immemorially. If only your ABS light warning light is on this will not effect normal braking but the ABS system is disabled while the ABS warning light is on. You still need to have it repaired but you still have brakes for the moment. Now the code for this fault will be stored inside the ABS memory module. So you pinpoint this with scanner. Hope this helps

Mar 22, 2011 | Volkswagen New Passat Cars & Trucks

1 Answer

Air Suspension system Problem 1990 Lincoln Towncar


Unplugging the Connector will cause the Check Suspension light to come on as its listed as a fault as it cant run.

But with it unplugged the compressor shouldnt been able to start. If you want to kill the compressor pull its relay from the engine bay. located above the battery.

But i'd suggest correcting the fault as if those bags do pop your going to end up being grounded. as the rear will drop a fair bit!

Jul 16, 2009 | 1990 Lincoln Town Car

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