LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2016 >> Elantra Value Edition >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Heater System) >> Heater Unit >> Repair Procedures >> Replacement
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.
  1. Disconnect the negative (-) battery terminal.
  2. Recover the refrigerant with a recovery/recycling/charging station.
  3. When the Engine is cool, drain the Engine coolant from the radiator.

    (Refer to: Engine Mechanical System - "COOLANT ").

  4. Remove the expansion valve (A) from the evaporator core.

    Tightening torque: 

    7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.7 ~ 8.7 lb-ft)

    Fig 1: Removing Expansion Valve From Evaporator Core
    G10751920Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
    • When installing, replace it with a new O-Ring (B).
  5. Disconnect the inlet (A) and outlet (B) heater hoses from the heater unit.
    Fig 2: Identifying Inlet And Outlet Heater Hoses
    G10751921Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Engine coolant will run out when the hoses are disconnected; drain it into a clean drip pan. Be sure not to let coolant spill on electrical parts or painted surfaces. If any coolant spills, rinse it off immediately.
  6. Remove the main crash pad assembly.

    (Refer to: Body - "MAIN CRASH PAD ASSEMBLY ").

  7. Remove the cowl cross bar assembly.

    (Refer to: Body - "COWL CROSS BAR ASSEMBLY ").

  8. Remove the heater & blower unit after loosening the mounting bolts (A).
    Fig 3: Loosening Heater And Blower Unit Mounting Bolts
    G10751922Courtesy of HYUNDAI MOTOR AMERICA
  9. Separate the blower unit from the heater unit after loosening the screws.
    Fig 4: Loosening Blower Unit Screws
    G10751923Courtesy of HYUNDAI MOTOR AMERICA
  10. 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.
scientia non olet · About LEMON Manuals