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 Owner's Manual: If the Engine Overheats
If your temperature gauge indicates
overheating, you experience a loss of
power, hear loud pinging or knocking,
or the engine may be overheating. If this
happens, you must:
1. Pull off the road and stop as soon as it
is safe to do so.
2. Shift the gear to P (Park) and apply the
parking ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Components and Components Location
- Components
1. RH water jacket insert2. LH water jacket insert3. Cylinder block4. O-ring5. Piston cooling oil jet6. Crankshaft upper bearing (No. 1, 5 journal)7. Thrust bearing8. Crankshaft upper bearing (No. 2, 3, 4 journal)9. Crankshaft10. Crankshaft position sensor wheel11. Crankshaft lowe ...