Hyundai Elantra (CN7): Cooling System / Troubleshooting
| Engine Overheat Troubleshooting |
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Inspection
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Remedy
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| Visual inspection | Inspect for shortage of coolant in reservoir tank . | Reinspect after replenishing coolant. | ||||
| Inspect for coolant pollution after removing radiator cap. | Reinspect after replacing coolant. | |||||
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| Inspect for leakage and loose coolant hoses (radiator hose, heater hose, oil cooler hose, etc.). | Reinspect for leakage after reinstalling hoses and clamps. | |||||
| Checking for coolant leaks of Integrated Thermal Management Module (ITM) | Replace O-ring or replace the integrated thermal management module (ITM) if required | |||||
| Inspecting the heater pipe connection to find coolant leaks. | Reinspect for leakage after reinstalling hoses and clamps. | |||||
| Inspect for leakage on water inlet fitting mounting part. | Reinspect for leakage after replacing O-ring. | |||||
| Reinspect for leakage after tightening to the specified torque. | ||||||
| Inspect drive belt (for normal operation of water pump). | Adjust drive belt tension or replace. | |||||
| Inspect for leakage on water pump gasket mounting part. | Reinspect for leakage after replacing gasket. | |||||
| Reinspect for leakage after tightening to the specified torque. | ||||||
| Inspect for loose coolant temperature sensor, cooling fan connector and pin. | Reinstall loose connector. | |||||
| Replace relevant part if connector pin is damaged. | ||||||
| Inspect operation status of cooling fan. - Check operation status by switching ON/OFF the heater control A/C. | Check mounting status of ground cable. | |||||
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| Diagnostic device | Inspect self-diagnostic code using diagnostic tool. | Check coolant temperature sensor, wiring, connector, etc. | ||||
| Unit inspection | Inspect water pump impeller. | Replace water pump. |
Components1. Water pipe2. Water hose3. Integrated thermal management module (ITM)4. Heater pipe5. Turbo charger coolant hose6. Heater hose7. Heater pipe A8.
Repair procedures Replacement and Air Bleeding • Never remove the reservoir tank cap when the engine is hot.
Other information:
Hyundai Elantra (CN7) 2021-2026 Service Manual: Temperature Control Actuator
Description and operation DescriptionThe temperature control actuator is located at the heater unit. It regulates the temperature by the procedure as follows. The signal from the control unit adjusts the position of the temperature door by operating the temperature switch.
Hyundai Elantra (CN7) 2021-2026 Service Manual: Rear Corner Radar Unit
Specifications Specifications Items Blind-Spot Collision Warning (BCW) Blind-Spot Collision- Avoidance Assist-Rear (BCA-R) Rated voltageDC 12VOperating voltage9V - 16VOperating speed30 km/h - 255 km/h60 km/h - 180 km/hSensible distance70m Curvature radiusStart : More
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