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: Changing tires
WARNING
A vehicle can slip or roll off of a jack causing serious injury or death to
you or those nearby. Take the following safety precautions:
Never place any portion of your body under a vehicle that is supported
by a jack.
NEVER attempt to change a tire in the lane of traffic. ALWAYS ...
Hyundai Elantra AD (2016-2020) Owners Manual: Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced carefully at the factory
to give you the longest tire life and best overall performance.
In most cases, you will not need to have your wheels aligned again. However,
if you notice unusual tire wear or your vehicle pulling one way or the other ...
Heater Unit Repair procedures
PTC Heater Description and Operation