[W126 Coupe] Air temperature

[Dick Spellman]

Nils-Helge Boge wrote:

> Hi

> Temperature reading in the instrument panel on my 560sec 87mod shows 

> approxemently 37degC at 0degCel . Is the reason for the problem the 

> sensor?

>

> Reagard

> Nils-Helge

>

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Hi Nils-Helge:

I'm going to suggest you unplug the bumper sensor from the display where 
it connects under the fusebox.  Then take a resistance reading to see if 
the sensor has gone bad.  While under the fuse holder tray, check for 
any burnt wires on that probe circuit just in case in came into contact 
with a hot fuse base and melted a bit.  Not likely but, check anyway.  
Problem is I do not know the equivalent values in the cd manual that 
relate ohms to actual ambient air temp to confirm that probe is good or 
no good.  Anyone got the chart handy to post here?

Dick