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High — Service SoonCode: THC_a110

Heat Pump Refrigerant System Failure

The advanced central climate heat pump system has entered a protective lock state due to an internal hardware breakdown, a failed electronic expansion valve, or low structural refrigerant pressure. The car cannot warm or cool its battery pack or passenger cabin spaces efficiently.

Tesla Model Y (2020+)Hyundai Ioniq 5 (2022+)Tesla, Hyundai Model Y, IONIQ 5 (2020+)

Estimated Cost

$1,850

Repair Time

3-5 hours

Difficulty

Shop Recommended

Can I Fix This Myself?

Professional Service Recommended

This repair involves high-voltage components or specialized equipment.

What professionals will use:

Professional scan toolHydraulic liftHigh-voltage safety PPE

Use the diagnostic wizard below to gather information for your mechanic, then find a local EV specialist using the ad below.

Step-by-Step Fix Instructions

  1. 1

    Run a comprehensive software update sweep to ensure that revised valve-timing profiles are installed.

  2. 2

    Inspect the front condenser radiator face panel for thick blankets of road mud, winter salt crust, or leaf blockages.

  3. 3

    Hook up an air conditioning manifold gauge set to check structural baseline pressures across high and low refrigerant lines.

  4. 4

    Perform a complete electronic leak dye test sweep to search for fine cracks along aluminum refrigerant plumbing loops.

  5. 5

    Disconnect the low-voltage control harness links at the electronic expansion valves to clean connection pins.

  6. 6

    Replace the central electric heat pump manifold assembly unit, replace electronic valve actuators, and vacuum recharge with fresh refrigerant.

Check Your Warranty Before Paying

Federal law requires EV battery warranty coverage for 8 years / 100,000 miles minimum. Many manufacturers offer 10-year coverage. An authorized dealership can confirm coverage for your VIN at no charge.

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Step-by-Step Diagnostic Wizard

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