The MAX A/C mode is used to cool the inside of the vehicle faster. Air flow is directed toward the upper body and face.
In this mode, the air conditioning and the recirculated air position cannot be selected. Turn the fan speed mode to adjust.
Hyundai Elantra AD (2016-2020) Service Manual: Rheostat Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Disconnect the rheostat switch connector (A).
4.
Check for intensity of new rheostat switch. If the light
intensity of the lamps changes sm ...
Hyundai Elantra AD (2016-2020) Service Manual: Auto Defogging Sensor Repair procedures
Diagnosis With GDS
1.
The heating, ventilation and air conditioning can be quickly diagnosed failed parts with vehicle diagnostic system (GDS).
? The diagnostic system (GDS) provides the following information.
(1) Self diagnosis : Checking the failure code (DTC) and display.
(2) Current dat ...