Repair Procedures: Replacement

WARNING: This page is about a different car, the 2016 Hyundai Elantra GT and 2015 Hyundai Elantra GT. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative (-) battery terminal.
Remove the heater & blower assembly.
(Refer to: Heater - "HEATER UNIT ").
Remove the heater core cover (A) after loosening the mounting screws.

Fig 1: Loosening Heater Core Cover Mounting Screws
Courtesy of HYUNDAI MOTOR AMERICA
Pull out the heater core (A) from heater unit.

Fig 2: Identifying Heater Core
Courtesy of HYUNDAI MOTOR AMERICA
Install in the reverse order of removal.
NOTE:
- If you're installing a new evaporator, 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 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.
- DO NOT interchange the inlet and outlet heater hoses and install the hose clamps securely.
- Refill the cooling system with engine coolant
Information
- Charge the system and test its performance.