Hyundai Santa Fe (TM): Cruise Control System (CC) / Troubleshooting

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Advanced Driver Assistance System (ADAS) / Cruise Control System (CC) / Troubleshooting

Trouble Symptom Charts
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

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    System Block Diagram Component Parts And Function Outline Component part Function Vehicle-speed sensor, ESP/ABS Control Module Converts vehicle speed to pulse.

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