1.Turn ignition switch OFF and disconnect the battery negative (-) terminal.
2.Remove the fuse box cover.
3.Remove the starter relay (A).

4.Check for continuity between the terminals (30 and 87) using an ohmmeter.
| Terminal | Resistance | Measure | ||
| 30 - 87 | 1 MΩ or higher | If there is continuity between the terminals, replace the relay. | ||

5.Apply 12V to the terminal 85 and ground to the terminal 86 and then check for continuity between the terminals (30 and 87).
| Terminal | Resistance | Measure | ||
| 30 - 87 | 1Ω or less | If there is no continuity between the terminals, replace the relay. | ||

6.Install the starter relay.
7. Install the fuse box cover.
Starter
Ignition SystemHyundai Tucson (NX4) 2022-2026 Service Manual: Specifications
- Specifications
Front Suspension
ItemSpecification
Suspension typeMacPherson Strut
Shock absorberTypeHPD(High Performance Damper)
Rear Suspension
ItemSpecification
Suspension typeMulti link
Shock absorberTypeHPD(High Performance Damper
Wheel & Tire
ItemSpecification
Front  ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Description and Operation
- Description
The charging system includes a battery, an alternator with a built-in
regulator, and the charging indicator light and wire.The Alternator has
eight built-in diodes, each rectifying AC current to DC
current.Therefore, DC current appears at alternator "B" terminal.In
addition, ...