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) Service Manual: Idler Repair procedures
Removal and Installation
1.
Remove the drive belt.
(Refer to Timing System - "Drive Belt")
2.
Remove the idler (A).
Tightening torque :
39.2 ~ 49.0N.m (4.0 ~ 5.0kgf.m, 28.9 ~ 36.2lb-ft)
3.
Install in the reverse order of removal.
Inspection
Check the idler for excessive oil le ...
Hyundai Elantra AD (2016-2020) Owners Manual: Front Seats
WARNING
Take the following precautions when adjusting your seat:
NEVER attempt to adjust the seat while the vehicle is moving. The seat
could respond with unexpected movement and may cause loss of vehicle control
resulting in an accident.
Do not place anything under the front seats. Loo ...
Heater Unit Repair procedures
PTC Heater Description and Operation