On these systems, there are two ways the engine management module knows there is a problem.
Shop owner Donny Seyfer explores the operation for these next-generation thermostats. This video is sponsored by MAHLE.
Andrew Markel discusses the failure patterns of thermostats, and how it can eventually affect several other systems of the vehicle. Sponsored by Auto Value and Bumper to Bumper.
Andrew Markel goes over how the electronic thermostat works, including how it regulates temperature on startup and under load. Sponsored by MAHLE.