Sudden drop in heater performance ~27°F (15°C) when the vehicle is driven in ambient temperatures below...

Bulletin number

T-SB-0126-20

Component

Engine and engine cooling

Summary

TSB: Some 2019 ? 2020 model year Camry vehicles may exhibit a sudden drop in heater performance ~27°F (15°C) when the vehicle is driven in ambient temperatures below -4°F (-20°C) and coolant temperature is 158°F (70°C) ? 172°F (78°C). The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to address this condition. Follow the Repair Procedure in this bulletin to address this condition.

Owners of these vehicles have filed 146 complaints in the engine category.