Grand Cherokee 2WD V8-4.7L VIN J (2004)
Driver/Vehicle Information Display: Description and Operation
Universal Transmitter
The Grand Cherokee Limited model has a Universal Garage Door Opener (UGDO) transceiver as standard factory-installed equipment. The UGDO is
optional on Laredo models. The UGDO transceiver is integral to the Electronic Vehicle Information Center (EVIC), which is located in the overhead
console. The only visible component of the UGDO are the three transmitter push buttons centered between the four EVIC push buttons located just
rearward of the EVIC display screen in the overhead console. The three UGDO transmitter push buttons are identified with one, two or three dots so that
they be easily identified by sight.
Each of the three UGDO transmitter push buttons controls an independent radio transmitter channel. Each of these three channels can be trained to
transmit a different radio frequency signal for the remote operation of garage door openers, motorized gate openers, home or office lighting, security
systems or just about any other device that can be equipped with a radio receiver in the 288 to 410 MegaHertz (MHz) frequency range for remote
operation. The UGDO is capable of operating systems using either rolling code or non-rolling code technology.
The EVIC module displays messages and a small house-shaped icon with one, two or three dots corresponding to the three transmitter buttons to indicate
the status of the UGDO. The EVIC messages are:
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Clearing Channels - Indicates that all of the transmitter codes stored in the UGDO are being cleared.
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Cleared Channels - Indicates that all of the transmitter codes stored in the UGDO have been successfully cleared.
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Training - Indicates that the UGDO is in its transmitter learning mode.
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Trained - Indicates that the UGDO has successfully acquired a new transmitter code.
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Did Not Train - Indicates that UGDO failed to acquire a new transmitter code.
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Transmit - Indicates that a trained UGDO transmitter button has been depressed and that the UGDO is transmitting.
The UGDO cannot be repaired, and is available for service only as a unit with the EVIC module. This unit includes the push button switches and the
plastic module. If any of these components are faulty or damaged, the complete EVIC module must be replaced.
The universal transmitter operates on a non-switched source of battery current so the unit will remain functional, regardless of the ignition switch
position. For more information on the features, programming procedures and operation of the universal transmitter, see the owner's manual in the vehicle
glove box.