Hyundai Elantra: Heater / Heater Core Repair procedures
| 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. 
|
| 5. |
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. |
|
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 ...
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) Owners Manual: Door Locks
Operating Door Locks from Outside the Vehicle
Mechanical key
If you lock the driver's door with a mechanical key, all vehicle doors will lock.
If you unlock the driver's door with a mechanical key, the driver's door will unlock
and the passenger doors will unlock according to the ...
Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description
The changed position of the seat by memorizing into the power
seat unit with IMS switch controlling the optimal seat position set by
the driver can be restored with the IMS switch.
It has the function of prohibiting the restoring action during driving and emergent stopping the l ...
Heater Unit Repair procedures
PTC Heater Description and Operation