CONTROL ASSY-COOLANT

Engine Coolant Flow Control Unit for Hyundai/Kia

Why this part is needed

This unit manages coolant paths between engine, radiator, and heater core. It keeps the motor in the ideal temperature window for power, economy, and low emissions. In modern Hyundai/Kia setups, precise coolant routing cuts warm‑up time, improves cabin heat, and protects the head gasket. Perfect choice when fixing overheating, slow warm‑up, or irregular fan activity.

How it works

An electric actuator drives internal valves, directing coolant flow via by‑pass and main circuits. The ECU commands it based on sensor data (ECT, ambient, load). By balancing flow, it stabilizes temperature, supports A/C performance, and helps catalytic converter light‑off. Seals prevent leaks; ports align with factory hoses for plug‑in fit.

What happens if it fails

Stuck open: long warm‑up, weak heater, P0128, higher fuel use. Stuck closed or jammed: overheating, boiling coolant, hard hot starts, warped head risk. Leaks cause low coolant, air pockets, and random temp swings. Replace at first signs to avoid engine damage.

Tech tips ✅

Bleed air after install, use fresh coolant to OE spec, check hoses and clamps, clear DTCs, and verify fan cycles.

Compatibility

• Santa Fe
• Grand Santa Fe
• Palisade
• Maxcruz
• Grandeur HG
• Azera