Troubleshooting |
Problem Symptoms Table |
Symptom | Suspected Area |
No blower operation | Blower fuse |
Blower relay | |
Blower motor | |
Power mosfet | |
Blower speed control switch | |
Wire harness | |
No air temperature control | Engine coolant capacity |
Heater control assembly | |
No compressor operation | Refrigerant capacity |
A/C fuse | |
Compressor | |
A/C pressure transducer | |
A/C switch | |
Evaporator temperature sensor | |
Wire harness | |
Vented air not cold | Refrigerant capacity |
Refrigerant pressure | |
Drive belt | |
Compressor | |
A/C pressure transducer | |
Evaporator temperature sensor | |
A/C switch | |
Heater control assembly | |
Wire harness | |
Insufficient cooling | Refrigerant capacity |
Drive belt | |
Compressor | |
Condenser | |
Expansion valve | |
Evaporator | |
Refrigerant lines | |
A/C pressure transducer | |
Heater control assembly | |
No engine idle-up when A/C switch ON | Engine ECM |
Wire harness | |
No air inlet control | Heater control assembly |
No mode control | Heater control assembly |
Mode actuator | |
No cooling fan operation | Cooling fan fuse |
Fan motor | |
Engine ECM | |
Wire harness |
Hyundai Elantra AD (2016-2020) Owners Manual: Hill-Start Assist Control (HAC)
The Hill-Start Assist Control (HAC) helps prevent the vehicle from rolling backwards
when starting a vehicle from a stop on a hill. The system operates the brakes automatically
for approximately 2 seconds and releases the brake after 2 seconds or when the accelerator
pedal is depressed.
WARNI ...
Hyundai Elantra AD (2016-2020) Owners Manual: Manual Heating and Air Conditioning
The heating and cooling system can be controlled manually by pushing buttons
other than the AUTO button. In this case, the system works sequentially according
to the order of buttons selected.
When pressing any button except the AUTO button while using automatic operation,
the functions not s ...