Hyundai Elantra: Heater / Heater Core Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Heating, Ventilation and Air Conditioning / Heater / Heater 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 heater core (A) from the heater unit.

To intall, reverse the removal procedure.

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 Unit Repair procedures

Replacement When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent ...

PTC Heater Description and Operation

Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core. The PTC heater is an electric heater using a PTC element as an auxiliary he ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: CVVT Oil Control Valve (OCV) Specifications
Specification [Bank 1 / Intake] #1 , [Bank 1 / Exhaust] ItemSpecificationCoil Resistance (?)9.4 ~ 10.4 [20°C(68°F)] [Bank 1 / Intake] #2 ItemSpecificationCoil Resistance (?)10.8 ~ 12.8 [20°C(68°F)] ...

Hyundai Elantra AD (2016-2020) Owners Manual: Installing a Child Restraint System (CRS)
WARNING Before installing your child restraint system always: Read and follow the instructions provided by the manufacturer of the child restraint. Read and follow the instructions regarding child restraint systems in this manual. Failure to follow all warnings and instructions could ...