Leaky Coolant Causes Prius Problem
Some 2016-2019 Toyota Prius and 2017-2019 Prius Prime vehicles may exhibit one or more of the following conditions due to a coolant leakage at the front exhaust pipe heat exchanger:
- Low coolant level
- MIL on accompanied by DTC P148F00
- Poor heater performance
The front exhaust pipe with heat exchanger assembly has been updated. For this assembly that features P/N 17410-37B52, 17410-37B50 or 17410-37A00, the new pipe assembly is available as P/N 17410-37D40.