Temperature Sensors (Senders & Switches)

A VDO temperature sender/switch, is a critical component that monitors the engine’s temperature within an engine’s cooling system (ECT – coolant) or oil lubricant system (air cooled).
Its primary function is to ensure that the engine runs at the adequate temperature for safe engine operation and fuel management, and to initiate a shutdown, while alerting the operator if engine temperature goes above a safe threshold.
It does this by transmitting the parameter reading via an analogue/digital signal to the engines instrument panel (DSE control module) or the engine control unit (ECU).
It is essentially a mechanical “thermometer”, which converts temperature into electrical signals that can be read and interpreted by the engine’s control systems.