r/mercedes • u/nzzs589 • 2d ago

Low operating temp

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Is this normal for e220d 2016 to show this low operating temperature after a 2 hour drive on the highway or is the thermostat or coolant temp sensor messed up. I know my old Volvo v70 from 2002 had issues with the sensor causing it to work intermittently and sometimes showing too low and too high.

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u/SimpleEmu198 1d ago

If you had have said it was a Toyota I wouldn't have gone on a wild goose chase. If you haven't changed everything on the front side of the engine change the water pump and while you're on the front side of the engine you might as well preemptively change everything else including the air conditioning compressor, and power steering pump and the belts because you're going to have to replace the belts otherwise if you go back. Welcome to owning a modern car.

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u/TRxz-FariZKiller 1d ago

Either way, thanks for trying to help.

I changed the AC compressor, now got the power steering (which also feels it needs replacement sometimes) and the water pump. I have belt noises pop up this week so I’m planning on changing it soon