1.Turn the ignition switch ON.
2.Manually operate the control switch and measure the voltage of the blower motor.
3.Select the control switch to raise the voltage until high speed.

| Fan Speed | Voltage (V) | |
| Manual Control | Auto Control | |
| 1 | 3.8 | 3.8 ~ 4.75 |
| 2 | 5 | 5.0 ~ 5.8 |
| 3 | 6.1 | 6.1 ~ 7.0 |
| 4 | 7.3 | 7.3 ~ 8.2 |
| 5 | 8.5 | 8.5 ~ 9.4 |
| 6 | 9.7 | 9.7 ~ 10.6 |
| 7 | 10.9 | 10.9 ~ 12.5 |
| 8 | Battery (+) | |
1.Disconnect the negative (-) battery terminal.
2.Remove the glove box.(Refer to Body (Interior and Exterior) - "Glove Box")
3.Disconnect the connector (A) and then remove the power mosfet (B) after loosening the mounting screws.

4.Install in the reverse order of removal.
Blower Resistor (Manual)
Climate Control Air FiltarHyundai Tucson (NX4) 2022-2025 Owner's Manual: Idle Stop and Go (ISG) System
Idle Stop and Go helps reduce fuel
consumption by automatically shutting
down the engine, when the vehicle is at
a standstill (i.e. red stop light, stop sign,
and traffic jam).
ISG system is always active, when the
engine is running.
Information
When the engine is automatically started ...
Hyundai Tucson (NX4) 2022-2025 Service Manual: Troubleshooting
- Troubleshooting
SymptomPossible causeRemedy
One lamp does not light(all exterior)Bulb burned outReplace bulb
Socket, wiring or ground faultyRepair if necessary
Head lamps do not lightBulb burned outReplace bulb
Ignition fuse (LOW:10A, HIGH:20A) blownCheck for short and replace fuse
Head la ...