1.There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
2.There should be no continuity between the No.30 and No.87 terminals when power is disconnected.



1.Disconnect the negative (-) battery terminal.
2.Push 4 hooks in the engine room relay box out to the arrow direction and put up the PCB block (A).

3.Disconnect the connector and remove the the PCB block (A).
1.Be sure there is no play in the fuse holders, and that the fuses are held securely.
2.Are the fuse capacities for each circuit correct?
3.Are there any blown fuses?
• If a fuse is to be replaced, be sure to use a new fuse of the same capacity. Always determine why the fuse blew first and completely eliminate the problem before installing a new fuse.

• Multi fuse (A) is needed to replace in the mass when it damaged only one fuse.
• Use the multi fuse capacities for each circuit correctly.
Components and Components Location
Relay Box (Passenger Compartment)Hyundai Tucson (NX4) 2022-2026 Service Manual: Seat Heater Switch
- Components
1. Front seat heater switch2. Rear seat heater switch
- Circuit Diagram
Connector Pin Information
PinDescriptionPinDescription
1IGN 117PDW switch
2ILL (+)18PDW IND
34WD lock swtich19-
4Grip control swtich (+)20Heater LH
5Grip control swtich (-)21Heater IND High_LH
...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Rear Door Inside Handle
- Replacement
1.Disconnect the negative ( - ) battery terminal.
2.Remove the rear door trim.(Refer to Rear Door - "Rear Door Trim")
3.Loosen the mounting screws and remove the rear door inside handle (A).
4.To install, reverse removal procedure.
• Make sure the door lo ...