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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (2.0L - Engine (Service Information) (2 Of 4)) >> Cooling System >> Engine Cooling >> Description And Operation >> Cooling Systems >> Functional Description - Coolant Heater

Functional Description - Coolant Heater

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The high temperature cooling loop uses a HV Coolant Heater to heat the engine coolant for cabin heating. The command is sent via the LIN Bus from the HCP.

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