W212 350 CDI - Coolant sensor failed? Dial not moving and torque app shows 0 degrees

[wsurfa]

Hi all,

My 2010 350CDI started to have problems warming up on the coolant gauge reaching c50-60 degrees maximum. When I connected a cheapo OBDII and looked at coolant temps the Torque app it was flicking between 0 and 50, then tonight it stayed at 0, as did the dial on the dash.

I'd guess this means the sensor has failed? (replacement this one I assume - https://www.ebay.co.uk/itm/132128283950?epid=0&hash=item1ec3759d2e:g:wsoAAOSw32lY0jbi)

If so, does anyone have a picture or 'how to' guide to replace it?

Thanks

 

[wsurfa]

After several hours searching youtube etc - it looks like a fairly simple change for the sensor - just under the intake.
I'll order one and see what happens

 

[mioba]

good stuff. Do a write up - may help others.
change the turbo manifold and pcv seal while its exposed.

whenever i see a OM642 I think eff me who crammed all that in.