Hyundai Elantra: Heater / Evaporator Core

Hyundai Elantra (CN7) 2021-2025 Service Manual / Heating, Ventilation and Air Conditioning / Heater / Evaporator Core

Repair procedures

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the heater and blower assembly. (Refer to Heater - "Heater Unit")

3.	Remove the heater core cover (A) after loosening the mounting screws.

4.	Pull out the evaporator core (A) from the heater unit.

5.	Remove the evaporator temperature sensor (A).

To install, reverse the removal procedure.

•	If you're installing a new heater core, add refrigerant oil (PAG OIL).

•	Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the right O-rings for R-134a or R-1234yf to avoid leakage.

•	Immediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.

•	Do not spill the refrigerant oil on the vehicle; it may damage the paint, if the refrigerant oil contacts the paint, wash it off immediately.

•	Apply sealant to the grommets.

•	Make sure that there is no air leakage.

•	Charge the system and test its performance.

•	Do not interchange the inlet and outlet heater hoses and install the hose clamps securely.

Heater Core

Repair procedures Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3...

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...

Other information:

Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Engine Oil

Checking the Engine Oil Level 1. Follow all of the oil manufacturer’s precautions. 2. Be sure the vehicle is on the level ground in P (Park) with the parking brake set. If possible, block the wheels. 3. Turn the engine on and allow the engine to reach normal operating temperature...

Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Brake System

Power Brakes Your vehicle has power-assisted brakes that adjust automatically through normal usage. If the engine is not running or is turned off while driving, the power assist for the brakes will not work. You can still stop your vehicle by applying greater force to the brake pedal than typical...

Tachometer

The tachometer indicates the approximate number of engine revolutions per minute (RPM).

Use the tachometer to select the correct shift points and to prevent lugging and/ or over-revving the engine.

NOTICE

Do not operate the engine within the tachometer's RED ZONE. This may cause severe engine damage.