Hi all, I'm trying to replace my ECT sensor due to the p0116 error code. However, when looking online for the location of the ECT sensor, I'm getting different results. Any help would be greatly appreciated, thank you!

https://www.pelicanparts.com/techarticles/Mercedes-W204/37-WATER-Coolant_Temperature_Sensor_Replacement/37-WATER-Coolant_Temperature_Sensor_Replacement.htm

This post seems to answer the question, however, when looking for that sensor I can't find it. I do see other results saying its more towards the front of the engine to the left of the oil housing/behind the belt. And I do see something there that somewhat resembles the sensor.

So, is the ECT sensor the one to the left of the oil housing or is it really at the back towards the left cylinder?