Hyundai Tucson: Cruise Control System (CC) / Troubleshooting
Trouble Symptom 1
Trouble Symptom 2
| Trouble symptom | Probable cause | Remedy |
| The set vehicle speed varies greatly upward or downward "Surging" (repeated alternating acceleration and deceleration) occurs after setting | Malfunction of the vehicle speed sensor circuit | Repair the vehicle speed sensor system, or replace the part |
| Malfunction of ECM | Check input and output signals at ECM |
Trouble Symptom 3
| Trouble symptom | Probable cause | Remedy |
| The CC system is not canceled when the brake pedal is depressed | Damaged or disconnected wiring of the brake pedal switch | Repair the harness or replace the brake pedal switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
Trouble Symptom 4
| Trouble symptom | Probable cause | Remedy |
| The CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed) | Damaged or disconnected wiring of inhibitor switch input circuit | Repair the harness or repair or replace the inhibitor switch |
| Improper adjustment of inhibitor switch | ||
| Malfunction of the ECM signals | Check input and output signals at ECM |
Trouble Symptom 5
| Trouble symptom | Probable cause | Remedy |
| Cannot decelerate (coast) by using the "SET/–" switch | Temporary damaged or disconnected wiring of "SET/–" switch input circuit | Repair the harness or replace the "SET/–" switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
Trouble Symptom 6
| Trouble symptom | Probable cause | Remedy |
| Cannot accelerate or resume speed by using the "RES/+" switch | Damaged or disconnected wiring, or short circuit, or "RES/+" switch input circuit | Repair the harness or replace the "RES/+" switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
Trouble Symptom 7
| Trouble symptom | Probable cause | Remedy |
| CC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speed | Malfunction of the vehicle-speed sensor circuit | Repair the vehicle speed sensor system, or replace the part |
| Malfunction of the ECM signals | Check input and output signals at ECM |
Trouble Symptom 8
| Trouble symptom | Probable cause | Remedy |
| The cruise main switch indicator lamp does not illuminate (But CC system is normal) | Damaged or disconnected bulb of cruise main switch indicator lamp | Repair the harness or replace the part. |
| Harness damaged or disconnected |
Description and Operation
- Description
The cruise control system is engaged by the cruise "ON/OFF" main switch
located on right of steering wheel column. The system has the
capability to cruise, coast, accelerate and r ...
Schematic Diagrams
- System Block Diagram
Component Parts And Function Outline
Component partFunction
Vehicle-speed sensor, ESP/ABS Control ModuleConverts vehicle speed to pulse.
ECMReceives signals from sensor ...
Other information:
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Battery
WARNING
To prevent serious injury or death to you
or bystanders when working near or
handling the battery:
Always read and follow
instructions carefully when
handling a battery.
Wear eye protection designed
to protect the eyes from acid
splashes.
Keep all flames, sparks, or
smok ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Smart Cruise Control (SCC)
Basic function
Smart Cruise Control uses the front view
camera and front radar to help detect a
vehicle ahead and maintain the desired
speed and distance between your vehicle
and the vehicle ahead.
Overtake Assist Control
While Smart Cruise Control is operating,
if the function judges y ...
