Coolant temp lagging

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faisaljuma2

New Member
Joined
Jun 22, 2021
Messages
1
Location
Oman
Car
C280 | 2009 | W204
Hello Everyone

I have C208(W204) | 2009 , I have an issue withe coolant temp , The normal Coolent temp 85-90C degree , but suddenly it rise to 100 for few seconds and drop again to 90degree
and the coolest temp icon show in dashboard with normal color , this morning also get same issue but the temp was only 80C and drop to 70 and back 80 again
this happen when car stop or even drive 130Km/h

when tis happened the A/C compressor not working

I checked Fan working perfectly
 
Most likely sensor or guage
 
what engine type,code is in your car?
 

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