Hyundai Ioniq: Hybrid Motor Cooling System / Electric Water Pump(EWP). Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Hybrid Motor System / Hybrid Motor Cooling System / Electric Water Pump(EWP). Repair procedures

Removal

1.	Remove the 12 V battery (-) cable.

2.	Remove the undercover. (Refer to Engine Mechanical System - "Engine Room Undercover".)

3.	Drain the coolant from the hybrid cooling system. (Refer to Hybrid Motor Cooling System - "Coolant".)

4.	Disconnect the hose (A) from the reservoir tank.

5.	Disconnect the hose (A).

Unscrew the mounting bolt (A).

Tightening torque : 9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

7.	Disconnect the connector (A).

Remove the electric water pump (EWP) after removing the bolts(B).

Tightening torque : 9.8 - 11.8N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

Installation

To install, reverse the removal procedure.

•	Be careful not to cause any damage on the hose when tightening the clamp.

•	Mount the clamp tightening part in the designated direction so that interference does not occur with the adjacent parts.

•	Fill the coolant in the hybrid cooling system and use the GDS to perform air bleeding. (Refer to Hybrid Motor Cooling System - "Coolant".)

•	Check for the leakage in the hose connections while the engine is running.

Electric Water Pump(EWP). Components and components location

Component location1. HPCU (Hybrid Power Control Unit)(LDC+MCU+HCU+Reservoir)2. Hybrid drive motor3. Hybrid starter generator (HSG)4. Electrical radiator5...

Coolant. Repair procedures

Changing the Coolant and Performing Air Bleeding Never remove the cap while the engine is hot. When you remove the cap from the reservoir, hot coolant may spew out due to the high pressure, causing serious injury...

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