Just to confirm that temp chart was for my S500's ECT sensor. You are correct in that temperature measurement for your car (W124 with a 103 engine) is different.
The S class cars have two coolant sensors; an ECT (B11/2) and CT sensor (B10/8). The latter sensor controls the A/C and the auxillary fans. The ECT sensor's output is what is read on the temperature gauge in the instrument cluster for S cars.
The chart values was for the ECT sensor which is completely different for the CT sensor. A bit confusing!
Regards . . . . JimF
'94 S500 Cpe
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