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GETTING TO KNOW YOUR VEHICLE 33
NOTE:
Duplication of key fobs may be performed at an authorized
dealer. This procedure consists of programming a blank key
fob to the vehicle electronics. A blank key fob is one that has
never been programmed.
When having the Sentry Key Immobilizer System serviced,
bring all vehicle keys with you to an authorized dealer.
Irregular Operation
The system uses a key fob, an Ignition Node Module, Keyless
Push Button Ignition and a RF receiver to prevent unautho-
rized vehicle operation. Therefore, only key fobs that are
programmed to the vehicle can be used to start and operate
the vehicle. The system will not allow the engine to crank if
an invalid key fob is used to start and operate the vehicle.
The system will shut the engine off in two seconds if an
invalid key fob is used to start the engine.
NOTE:
A key fob that has not been programmed is also considered
an invalid key.
During normal operation, after placing the keyless ignition
in the ON/RUN mode, the Vehicle Security Light will turn
on for three seconds for a bulb check. If the light remains on
after the bulb check, it indicates that there is a problem with
the electronics. In addition, if the light begins to flash after
the bulb check, it indicates that someone used an invalid key
fob to try to start the engine. Either of these conditions will
result in the engine being shut off after two seconds.
If the Vehicle Security Light turns on during normal vehicle
operation (vehicle running for longer than 10 seconds), it
indicates that there is a fault in the electronics. Should this
occur, have the vehicle serviced as soon as possible by an
authorized dealer.
CAUTION!
• Always remove the key fobs from the vehicle and lock
all doors when leaving the vehicle unattended.
• For vehicles equipped with Keyless Enter-N-Go —
Ignition, always remember to place the ignition in the
OFF position.
2
2020_JEEP_CHEROKEE_OM_USA=GUID-B9F8E23F-10A5-4D6C-A585-BCFF41CCB747=1=en=.book Page 33
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