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 Service Manual: Passenger Airbag (PAB) Module
- Description
The passenger airbag (PAB) is installed inside the crash pad and
protects the front passenger in the event of a frontal crash. The SRSCM
determines if and when to deploy the PAB.
• Never attempt to measure the circuit resistance of the airbag
module (squib ...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Front Door Trim
- Components Location
1. Front door trim
- Replacement
• When removing with a flat - tip screwdriver or remover, wrap
protective tape around the tools to prevent damage to components.
• Put on gloves to prevent hand injuries.
1.Disconnect the negative ( ...
