1.In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (diagnostic tool).The diagnostic system (diagnostic tool) provides the following information.
(1)Fault Code Searching : Checking failure and code number (DTC)
(2)Data Analysis : Checking the system input/output data state
(3)Actuation test : Checking the system operation condition
(4)S/W Management : Controlling other features including system option setting and zero point adjustment
2.If diagnose the vehicle by diagnostic tool, select "DTC Analysis" and "Vehicle".

3.Select the 'Data Analysis' and 'Car model'.

4.Select the 'IBU_BCM' to search the current state of the input/output data.


5.To forcibly actuate the input value of the module to be checked, select option 'Actuation Test'.

1.isconnect the negative (-) battery terminal.
2.Remove the heater and A/C controll unit.(Refer to Heating,Ventilation, Air Conditioning - "Heater & A/C Control Unit (Manual)")(Refer to Heating, Ventilation, Air conditioning - "Heater & A/C Control Unit (DATC)")
1.Install the heater and A/C control unit.
2.Connect the negative (-) battery terminal.
Rear Glass Defogger Printed HeaterHyundai Tucson (NX4) 2022-2026 Owner's Manual: Electronic Parking Brake
(EPB) warning light. AUTO HOLD indicator light
Electronic Parking Brake
(EPB) warning light
This warning light illuminates:
When the ignition switch is in the
ON position. The EPB warning light
illuminates for about 3 seconds and
then goes off.
Whenever there is a malfunction with
EPB.
If the EPB warning light remains
...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Automatic Reversal
During power liftgate operation if the
power liftgate senses any obstacle,
the liftgate stops or fully opens. The
automatic reverse feature may not
operate properly, or it may operate
unexpectedly under the following
circumstances:
The automatic reverse feature may
not detect the ...