What's involved
What this repair actually is.
Hybrids and EVs run a separate coolant circuit for the inverter and power electronics, and the coolant degrades just like engine coolant. We drain the loop, refill with the exact manufacturer-specified coolant, and bleed the system so the electric pump circulates properly.
Symptoms
How you can tell.
- Coolant in the inverter reservoir looks dirty or low
- Hybrid or EV system overheat warning
- Whining electric pump noise
- Reduced power in hot weather
- Service reminder for hybrid/EV coolant
If you delay
Old or low inverter coolant lets the power electronics overheat, which can destroy the inverter — a repair many times the cost of this service.
Educational estimate. Real pricing depends on your vehicle, the inspection, parts availability, taxes, and shop rates. Use this as a guide while you shop quotes.