C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Where is coolant temperature sensor?

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Old Jan 3, 2025 | 10:09 AM
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Where is coolant temperature sensor?

Hello, my 2.2CDI OM646 FL has bad coolant temperature sensor, and I cant find it anywhere, does anyone know where is it?
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Old Jan 3, 2025 | 05:55 PM
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Originally Posted by Plutoe
Wow so its not a booster-----look hereMercedes / Car > Mercedes EPC Online > nemigaparts.com
I already discovered that the sensor is in the thermostat and I know that the thermostat itself is bad, I'll see if that helps. Thanks for help
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Old Jan 12, 2025 | 04:33 PM
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Did you replace the thermostat? Was it easy enough to do?
On cold days, my water temperature only increases when I'm idling, when I start driving again, it drops, and the heating in the car is not effective when this happens. No issues in the summer. Is the thermostat likely to be my issue?
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Old Jan 13, 2025 | 12:39 PM
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Originally Posted by Plutoe
yes
Thanks. Is this a garage job, or DIY?
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Old Jan 13, 2025 | 02:20 PM
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w203cl
On most engine DIY. Test: Cold engine, drive one mile, stop, feel the hose to the radiator, if it is even only a bit warm your thermostat is leaking and needs to be replaced.
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Old Jan 13, 2025 | 08:50 PM
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Originally Posted by Plutoe
Based on the questions you asked, I would say is a garage job.
Yeah I started watching a 'how to' video, and I agree.
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