Hyundai Kona: Heater / PTC Heater Description and operation

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 heating device that supplements deficiency of interior heat source in highly effective diesel engine. The electric heater heats up the interior by directly heating the air that passes through the heater. The name itself implies that the element has a proportional resistance change sensitive to temperature.

Operation Principle

ECM outputs a PTC ON signal and operates PTC relay 1. Then heater controller operates PTC relay 2 and PTC relay 3 with an interval of 15 seconds.

However, PTC relay 3 can be operated while battery voltage is above 12.4V.

Operating Condition

PTC heater operates according to the following conditions.

Heater Core Repair procedures

Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly. (Refer ...

PTC Heater Repair procedures

Inspection Operating Logic Test (Manual only) Inspect the PTC operation by confirmation logic as follows; 1. Entering (1) ...

Other information:

Hyundai Kona (OS) 2018-2024 Service Manual: Starter Specifications
Specification Item Specification Rated voltage 12V, 1.3 kw The number of pinion teeth 11 Performance [No-load, 11.5V] Ampere Max. 95A Speed ...

Hyundai Kona (OS) 2018-2024 Owners Manual: Engine Start/Stop button
Whenever the front door is opened, the Engine Start/Stop button will illuminate and will go off 30 seconds after the door is closed. WARNING To turn the engine off in an emergency: Press and hold the Engine Start/ Stop button for more than two seconds OR Rapidly press and release the Engine Start ...