Hyundai Sonata: Heater / Evaporator Core Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Heater / Evaporator Core Repair procedures

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	After loosening the bolts remove the main crash pad and cowl cross bar assembly together. (Refer to Heater -"Heater Unit")

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

4.	Separate the blower unit (B) from the heater unit (A) after loosening the screws.

5.	Remove the heater unit lower case mounting clip (A).

6.	Remove the heater unit lower case (B) after loosening the mounting screws.

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

Install in the reverse order of removal.

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

B.	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 to avoid leakage.

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

D.	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.

E.	Apply sealant to the grommets.

F.	Make sure that there is no air leakage.

G.	Charge the system and test its performance.

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

Heater Core Repair procedures

Replacement 1. Disconnect the negative (-) battery terminal. 2. After loosening the bolts remove the main crash pad and cowl cross bar assembly together. (Refer to Heater -"Heater Unit") ...

Temperature Control Actuator Components and Components Location

Components Location 1. Temperature control actuator [LH]2. Temperature control actuator [RH] ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Rear Cross Member Repair procedures
Replacement 1. Raise the vehicle, and make sure it is securely supported. 2. Remove the wheel cap (A). Be careful not to damage to the wheel cap (A) when removing the it. 3. Remove the front wheel and tire (A) from front hub. Tightening torque : 88.2 ~ 107.8 ...

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components Location 1. Engine Control Module (ECM) 2. Manifold Absolute Pressure Sensor (MAPS) 3. Intake Air Temperature Sensor (IATS) 4. Boost Pressure Sensor (BPS) 5. Engine Coolant Temperature Sensor (ECTS) 6. Throttle Position Sensor (TPS) [integrated into ETC Module] ...