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: Master Cylinder
- Components
1. Reservoir cap2. Reservoir3. Brake booster4. Master cylinder5. Push rod
- Removal
1.Turm ignition switch OFF and disconnect the negative (-) battery cable.
2.Remove the battery.(Refer to Engine Electrical System - "Battery")
3.Disconnect the brake fluid level sensor c ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Airbag collision sensors
WARNING
To reduce the risk of an airbag deploying
unexpectedly and causing serious injury
or death:
Do not hit or allow any objects to
impact the locations where airbags or
sensors are installed.
Do not perform maintenance on or
around the airbag sensors. If the
location or an ...