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C1391, Brake System Replacement

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by Singh Saab, Oct 16, 2023.

  1. Singh Saab

    Singh Saab Junior Member

    Joined:
    Sep 12, 2021
    39
    13
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    Location:
    CA, USA
    Vehicle:
    2018 Prius Prime
    Model:
    Prime Premium
    Hello All, our 2013 Prius Plug-in had its ABS, Brake and Traction Control Lights on the dash. I used an OBD2 scanner and found code C1391. Some searches lead to replacing the Brake Booster which the dealership also confirmed. Some videos show that the replacement is pretty simple. The dealership is going to charge $3600+ for replacing the brake booster with master cylinder and brake booster pump, after some searching I am able to get both parts for about $1200 and the dealership can bleed and calibrate for about $800. I am planning to do the replacement myself to save some money. For anyone who many know or has done this replacement do you have any suggestions or pointers.