Hyundai Elantra: Cruise Control System (CC) / Troubleshooting

Hyundai Elantra (CN7) 2021-2025 Service 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
Cannot decelerate (coast) by using 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	Repair the harness or replace the part.

Description and operation

DescriptionThe 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 resume speed...

Components and components location

Components1. Remote control switch (Audio swtich) 2. Remote control switch (Cruise control switch)..

Other information:

Hyundai Elantra (CN7) 2021-2025 Service Manual: Overhead Console Lamp

Repair procedures Removal1.Disconnect the negative (-) battery terminal.2.Using a remover and remove the overhead console (A).3.Disconnect the overhead console connectors (A).Installation1.Connect the overhead console connectors and install the overhead console.2.Connect the negative (-) battery terminal...

Hyundai Elantra (CN7) 2021-2025 Service Manual: Water Jacket Insert

Components and components location Components1. LH Water jacket insert2. RH Water jacket insert Repair procedures Removal and Installation1.Remove the cylinder head. (Refer to Cylinder Head Assembly - "Cylinder Head")2.Remove the RH water jacket insert and LH water jacket insert (A). • When removing the water jacket insert, Be careful not to ..

Odometer

The odometer indicates the total distance that the vehicle has been driven and should be used to determine when periodic maintenance should be performed.