Thermostat, temp & fan running on

clarkey2311

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Hi guys,
I’ve noticed since I bought the car that it’s only getting a reading of between 40/60 on the temp gauge when driving to work.. 15 min trip, some morning it’s get to between 40 & 60 then goes back down ... on the odd occasion it’s gone completely back to 40 when I arrive at work and the fan is blowing for around 30 seconds or so when I turn the engine off ... is this due the weather at the minute ? I’m used to cars getting to temp in like 5 mins and then staying there constantly so this is a tad strange for me :confused:
It’s a 2011 C350 CDI by the way
 

LostKiwi

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'93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
Sounds like your thermostat is foobared.
If you have a DPF get the thermostat fixed ASAP as it will fail to regen if the engine is not up to temperature.
 
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clarkey2311

clarkey2311

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Sounds like your thermostat is foobared.
If you have a DPF get the thermostat fixed ASAP as it will fail to regen if the engine is not up to temperature.
How do I know if I have a DPF or not on my model ?
 

LostKiwi

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If the inside of the exhaust is black and sooty then no DPF.
 

malcolm210

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If registration documents state EU5 the car is fitted with a DPF. As LK I would get the stat changed ASAP the OM642 usually warms up quickly and if not mpg will suffer and you may have DPF regeneration problems
 

Avnt

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Yeah get it changed. I did mine about a month ago improved fuel economy also less forced regens


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clarkey2311

clarkey2311

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Full service today with all filters changed and fluids .... a read of the codes showed a fault on the thermostat sensor in the housing itself ... ordered new from MB to be fitted Monday ... cheers for the advise guys
 

Avnt

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Full service today with all filters changed and fluids .... a read of the codes showed a fault on the thermostat sensor in the housing itself ... ordered new from MB to be fitted Monday ... cheers for the advise guys

Where did you go for service?


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clarkey2311

clarkey2311

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Where did you go for service?


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Used a garage that I used when I had my BM, it’s called Deutsche Mark ... they specialise in cough cough .... German cars believe it or not
 

Avnt

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Used a garage that I used when I had my BM, it’s called Deutsche Mark ... they specialise in cough cough .... German cars believe it or not

In Doncaster? Id have never thought they’d have been German specialists


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clarkey2311

clarkey2311

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In Doncaster? Id have never thought they’d have been German specialists


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Ha ha thanks but yes they do ;)
 


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