Hyundai Tiburon 2003 Workshop Manual page 776

Operation range is unstable
Central locking device
operates but keyless entry
does not work
If central lock and keyless entry do not operate simultaneously, systems other than the keyless entry may be
considered faulty.
Then check related systems.
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Discharged transmitter
battery
Transmitter or receiver faulty
Discharged transmitter
battery
Faulty signal code
registration
Faulty keyless entry circuit
Faulty receiver
Faulty body control module
Check the transmitter, red
lamp blinking upon pressing
the transmitter switch
Check the transmitter, red
lamp blinking upon pressing
the transmitter switch
Check the BCM connector,
and the harness between the
BCM and the door lock
actuator
Check the receiver output
using the oscilloscope
Page 15 of 15
Replace the battery
Replace the transmitter or
the receiver
Replace the battery
Ensure normal door
opening/closing by using the
door key and register the
code again
Repair the connector or the
harnese
Replace the receiver
Replace the faulty control
unit and module
24.04.2008