| VELOSTER(FS) >2013 > G 1.6 GDI > Heating,Ventilation, Air Conditioning > Heater > Heater Unit>Repair procedures |

Replacement
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.
4. | Remove the expansion valve (A) from the evaporator core and then remove the cover (B).
Tightening torque : 7.8 ~ 11.7 N.m ( 0.8 ~ 1.2 kgf.m, 5.7 ~ 8.6 Ib-ft)
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
5. | Disconnect the inlet (A) and outlet (B) heater hoses from the heater unit and then remove the cover (C).
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 center console. (Refer to BD group - "Center Console")
7. | Remove the steering handle and column. (Refer to ST group - "Steering Column")
8. | Remove the cowl top cover. (Refer to BD group - "Cowl Top Cover")
9. | Remove the photo sensor. (Refer to HA group - "Photo Senosr")
10. | Loosen the cowl cross member mounting bolts (A).
11. | Remove the left & right front filler trim and than disconnect the connectors (A).
12. | Disconnect the left & right multi box connectors (A).
13. | Disconnect the main fuse box connectros (A).
14. | Disconnect the air bag connectors (A).
15. | Remove the center facia panel (A).
16. | Loosen the heater & blower unit mounting bolt (A).
17. | Loosen the heater & blower unit mounting bolts (A).
18. | Loosen the cowl cross member mounting bolts (A) and then remove the crash pad and heater & blower unit assembly (B).
19. | Disconnect the connectors and then remove the heater & blower unit (A) from the crash pad.
20. | Remove the blower unit (A) from heater unit after loosening screws.
21. | Loosen the mounting screws and then remove the heater core cover (A).
22. | Disconnect the heater core (A) from heater unit.
23. | Loosen the heater unit lower case mount screws and then remove the heater unit lower case (A).
24. | Remove the evaporator core (A).
Be careful that the inlet and outlet pipe are not bent during heater core removal, and pull out the heater core.
25. | Installation is the reverse order of removal.
- | 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.
- | Charge the system and test its performance.
- | Do not interchange the inlet and outlet heater hoses and install the hose clamps securely.
- | Refill the cooling system with engine coolant