Hyundai Ioniq: Air Conditioning System / Condenser. Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Condenser. Repair procedures

Inspection

1.	Check the condenser fins for clogging and damage. If clogged, clean them with water, and blow them with compressed air. If bent, gently bend them using a screwdriver or pliers.

2.	Check the condenser connections for leakage, and repair or replace it, if required.

Replacement

Recover the refrigerant with a recovery / recycling / charging station.

•	If the POE oil of the system gets mixed with PAG oil, then dielectric breakdown due to decreased volumetric resistivity can occur and inoperative A/C compressor may result, A/C compressor may not work.

2.	Disconnect the negative (-) battery terminal.

3.	Remove the front bumper. (Refer to Body - "Front Bumper Cover")

4.	Loosen the mounting bolts, remove the radiator upper cover (A).

5.	After loosening the mounting bolts, remove the condenser (A).

To install, reverse the removal procedure.

•	If you're installing a new condenser, add refrigerant oil (POE OIL).

•	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 or 1234yf to avoid leakage.

•	Be careful not to damage the radiator and condenser fins when installing the condenser.

•	Charge the system, and test its performance.

•	If the POE oil of the system gets mixed with PAG oil, then dielectric breakdown due to decreased volumetric resistivity can occur and inoperative A/C compressor may result, A/C compressor may not work.

Condenser. Components and components location

C..

Receiver-Drier. Repair procedures

Replacement1.Remove the condenser.2.Remove the cap (A) on the bottom of the condenser with a L wrench. Tightening torque : 9.81 - 14.71 N...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Troubleshooting

Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2 Trouble symptom Probable cause Remedy The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of ECMCheck input and output signals at ECMTrouble Symptom 3 Trouble symptom Probable cause Remedy The CC system is not canceled when the brake pedal is depressedDamaged or disconnected wiring of the brake pedal switchRepair the harness or replace the brake pedal switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 4 Trouble symptom Probable cause Remedy The CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed)Damaged or disconnected wiring of inhibitor switch input circuitRepair the harness or repair or replace the inhibitor switchImproper adjustment of inhibitor switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 5 Trouble symptom Probable cause Remedy Cannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 6 Trouble symptom Probable cause Remedy Cannot accelerate or resume speed by using the "RES/+" switchDamaged or disconnected wiring, short circuit or "RES/+" switch input circuitRepair the harness or replace the "RES/+" switchMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 7 Trouble symptom Probable cause Remedy CC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of the ECM signalsCheck input and output signals at ECMTrouble Symptom 8 Trouble symptom Probable cause Remedy The cruise main switch indicator lamp does not illuminate (But CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Virtual Engine Sound Speaker. Repair procedures

Removal1.Disconnect the negative(-) battery terminal.2.Remove the front bumper cover.(Refer to Body - "Front Bumper Cover")3.Disconnect the VESS speaker connector (A) and then remove the VESS speaker (B) after loosening mounting bolts.Installation1.After connecting the VESS connectors, install the VESS speaker...