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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Overheat warning



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      06-26-2023, 01:20 PM   #1
Vulcan50
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Overheat warning

I had an Overheat warning the other day so I started trying to track down the cause. Water pump is fine, fan is fine and the thermostat is not too old (so I doubt it is the culprit), so I’m wondering if there’s a sensor somewhere else that’s failing. Any ideas?

Related: is there a way to add coolant temperature to the gauge display with perfekt toolbox? I added the M style velocity read out. I’m hoping there’s something similar.
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      06-27-2023, 11:54 AM   #2
muncie21
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To view water temp in real-time, access it via the hidden menu. Google "e90 hidden menu" for instructions.

07.00 KTMP-MOM (Kühlmittel Temperatur im Moment) Current coolant temperature

My guess is you have water pump that is on the way out. Mine worked off/on for several weeks before it went out completely.
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      07-10-2023, 08:56 AM   #3
Vulcan50
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Quote:
Originally Posted by muncie21 View Post
To view water temp in real-time, access it via the hidden menu. Google "e90 hidden menu" for instructions.

07.00 KTMP-MOM (Kühlmittel Temperatur im Moment) Current coolant temperature

My guess is you have water pump that is on the way out. Mine worked off/on for several weeks before it went out completely.
This ended up being correct. Thank you. I replaced it and haven’t had issues since!
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