Vehicle Questions and Answers
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If you own a Toyota Prius and need to locate the ECU, you can find it attached to the firewall beneath the brake fluid reservoir in the engine compartment. If the ECU is not functioning properly, it will need to be swapped out for a new one. The cost of a new ECU can range from $148 to $473. Additionally, if you hire a mechanic or service professional to replace it, you can expect to pay an extra $158 to $210 for labor.
The Toyota Prius comes equipped with several electronic control units (ECUs) situated inside the car. These include the power steering ECU, gateway ECU, body ECU, navigation ECU, and various other ECUs.