Hyundai Tucson: 4 Wheel Drive (4WD) System / Troubleshooting
| Area of leakage occuring | Area | Type |
| ① Connecting part/under part of transfer case ② Connecting part of transmission |
| [A] |
| ① Connecting part/under part of transfer case ② Connecting part of transmission ③ Assembly part of drive shaft |
| [B] |
| Symptom | Expected cause | Countermeasure |
| Oil leakage | Oil leakage on connecting part of transfer case (①) | Adjustment or replacement, adjustment |
| Oil leakage on under part of transfer case (①) | Adjustment or replacement, adjustment | |
| Oil leakage trace on connecting part of transmission (②) | Adjustment | |
| Oil leakage at assembly part of drive shaft (③) | Adjustment or replacement, adjustment | |
| Upside down the oil seal main lip (②,③) | Replacement | |
| Pushed aside oil seal (②,③) | Replacement | |
| fallen out oil seal (②,③) | Replacement | |
| Spline abrasion (check whether spline at transmission has abrasion or not) | Adjustment or replacement, adjustment | |
| Noise | "Repeated clicking noise" noise while driving | Adjustment |
| "Repeated tapping noise" noise from under the vehicle while full turn circling | Adjustment | |
| "Clunking noise" noise when the vehicle accelerate rapidly or braking rapidly. - Spline abrasion (check whether spline at transmission has abrasion or not) | Adjustment or replacement, adjustment |
• ※ Range of "adjustment"
• Clean out the oil or trace of grease leakage
• Check whether engine or transmission has oil leakage and oil flow down or not.
• Check the parts that is related to trouble area.
Specifications
- Specifications
Tightening Torques
ItemsN.mKgf.mlb-ft
Transfer assembly mounting bolts60.8 - 65.76.2 - 6.744.8 - 48.5
4WD ECM mounting nuts9.8 - 11.81.0 - 1.27.2 - 8.7
Coupling assembly mount ...
Other information:
Hyundai Tucson (NX4) 2022-2025 Service Manual: Brake oil
- Specification
Fluid Type
DOT 4
Reservoir Quantity (cc)
TOTAL VOLUME A + B + C + D + E + F410 ± 20
MAX LEVELA + B + C + D + E396 ± 20
ON LEVELB + C + D + E128 ± 20
MIN LEVELC + D + E100 ± 20
PART LEVELDPri : 29 ± 5
ESec : 35 ± 5
CLUTCH LEVELF14 ± 5
- Replacement
&n ...
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Using Smart Liftgate
The hands-free smart liftgate system can
be used when:
The smart liftgate option is enabled in
the Settings menu in the instrument
cluster or infotainment system.
The smart liftgate is activated 15
seconds after all the doors are closed
and locked.
The smart liftgate opens when ...
