Hyundai Sonata LF Quiz
Heating, Ventilation, and Air Conditioning

Blower Unit Repair Procedures

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 9Engine Mechanical System — 90Engine Electrical System — 58Emission Control System — 24Engine Control System/Fuel System — 114Drive Shaft and Axle — 15Suspension System — 35Steering — 19Restraints — 50Brake System — 54Body (Interior and Exterior) — 213Body Electrical System — 241Heating, Ventilation, and Air Conditioning — 56DCT (Dual Clutch Transmission) System — 52
30steps
~180min
4/5difficulty
0102030405011.79N·mlb·ft
Tightening torque found on this page
Done 0 of 30

Replacement
When prying with a flat-tip screwdriver or a trim tool, wrap the tool with protective tape and apply protective tape to the surrounding parts to prevent damage.
  1. Disconnect the negative (-) battery terminal.
  2. Recover the refrigerant using a refrigerant recovery/recycling/recharging station.
  3. When the engine has cooled, drain the engine coolant from the radiator. (Refer to Engine Mechanical System - "Coolant")
  4. Remove the upper hood cover. (Refer to Body - "Upper Cover Panel")
  5. Loosen the nut and remove the expansion valve cover (A).

    Tightening torque: 8.8 ~ 11.7 N·m

  6. Remove the bolts and the expansion valve (A) from the evaporator core.

    Tightening torque: 8.8 ~ 11.7 N·m
    • Plug or cover the lines immediately after disconnecting them to prevent moisture and dust from entering.
    • When installing, replace the O-ring with a new one (B).
  7. Disconnect the heater inlet (A) and outlet (B) hoses from the heater unit.
    • When disconnecting the hoses, engine coolant will drain from the hose. Therefore, drain the coolant into a clean pan.
  8. Loosen the hood cross member bolts.
  9. Remove both front seat assemblies. (Refer to Body - "Front Seat Assembly")
  10. Remove the floor console assembly. (Refer to Body – Floor Console Assembly)
  11. Remove the emergency pad lower panel. (Refer to Body - "Emergency Pad Lower Panel")
  12. Remove the side cover of the airbag. (Refer to Body - "Center Facia Panel")
  13. Remove both sides of the front pillar garnish. (Refer to Body - "Front Pillar Garnish")
  14. Remove both hood side trim panels. (Refer to Body - "Hood Side Trim")
  15. Remove the lower steering column cover panel. (Refer to Body - "Steering Column Cover Panel")
  16. Remove the steering wheel. (Refer to Steering System - "Steering Wheel")
  17. Remove the combination switch. (Refer to Body Electrical System - "Combination Switch")
  18. Lower the steering column after loosening the mounting bolts. (Refer to Steering System - "Steering Column and Shaft")
  19. Remove the shift lever assembly. (Refer to Automatic Transmission System - "Shift Lever")
  20. Disconnect the connector (A) of the SRS control module (SRSCM).
  21. Disconnect the connectors of the junction box (A).
  22. Disconnect the connectors (A) and the wire clips on the front pillar. [LHD]
    [RHD]
  23. Disconnect the connectors of the multi-box (A). [LHD]
    [RHD]
  24. Remove the drain hose (A).
  25. After loosening the bolts, remove the main crash pad and hood cross member assembly (A) together.
  26. Disconnect the connectors of the heater and blower unit.
    1. Disconnect the blower motor connector (A) and remove the wiring clips.
    2. Disconnect the mode control actuator connector (A) and the temperature control actuator connector (B), then remove the wire harness clips.
    3. Disconnect the intake actuator (A) and the cluster ionizer connector (B), the FET connectors (C), then remove the wire harness clips.
  27. Remove the center panel. (Refer to Body - "Center Panel")
  28. Remove the heater and blower unit (A) from the protector (B) after loosening the mounting nuts.
  29. After loosening the screws, separate the blower unit (B) from the heater unit (A).
  30. Install in the reverse order of removal.

Test yourself

A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.