Is there any overheat sensor on the BMW Engine E39- M52?
Yes, the BMW Engine E39-M52 does have an overheat sensor. It is located in the cylinder head and is used to monitor the temperature of the engine coolant. If the coolant temperature exceeds a predetermined threshold, the sensor will send a signal to the engine control unit (ECU), which will then activate the cooling fan and/or reduce the engine's power output in order to prevent overheating.