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Hybrid cooling system maintenance and repairs

A hybrid has more to keep cool than a petrol car: the engine, the inverter that drives the electric motors and the battery pack. When any of them runs hot, performance and lifespan suffer.

What we look after

  • Engine cooling: coolant, hoses, radiator and thermostat
  • Inverter cooling circuit and its pump
  • Hybrid battery cooling fan, intake and ducts
  • Leaks and overheating diagnosis

Why it matters on a hybrid

A hybrid battery that runs hot loses capacity faster, and an inverter that overheats can put the car into a reduced power mode. Keeping the cooling in order is one of the cheapest ways to protect the most expensive parts of the car.

Questions

Cooling system questions.

Is the inverter coolant the same as the engine coolant?

On Toyota and Lexus hybrids the inverter has its own cooling circuit, separate from the engine. Both are checked at a hybrid service.

Warning light on? Do not guess.

Book a hybrid health check and know exactly where you stand.

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