TSBs

Leaky Coolant Causes Prius Problem

Jan. 7, 2023

Some 2016-2019 Toyota Prius and 2017-2019 Prius Prime vehicles may exhibit one or more conditions due to a coolant leakage at the front exhaust pipe heat exchanger.

Information courtesy of Mitchell 1

Mike Mavrigian

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.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.