Coolant leak at exhaust heat exchanger pipe
ENGINE AND ENGINE COOLING
4 NHTSA complaints · 2023-04 → 2025-08
“The contact stated there was a coolant leak and the coolant level was low. There was no indication of coolant on the ground. The check engine and engine HOT warning lights were illuminated. The contact stated that the failure was related to TSB: 0135-19”
“Coolant system failed because coolant was leaking into catalytic converter. Two mechanics in two different states (one a Toyota dealer) claimed this is defect with 2019 Prius and results in repair costing more than $2000.00 because of this design flaw”
“The next day, I immediately sent my car to the dealer for a check up, the report stated ‘’ coolant reservoir very low. Pressure tested system found exhaust center pipe leaking coolant internally’’”