35 Outside temperature sensor whereabouts The Body
Citroen XM Internet Reference Version 1.0 59
3/3/99
35 Outside temperature sensor whereabouts
The righthand LCD temperature display has decided that it is 27C outside, despite it being 4C above
freezing!
Does anyone know of this problem or how it might be cured or even where this sensor is? Lets hope it’s
not connected to the ECU!!
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The temperature sensor is in the bottom of the left-hand door mirror. In a little bump in the plastic
moulding. I haven’t got any circuit diagrams here at work, but I’ve got one of the heater circuit at home.
I’ll look tonight to see if the external temperature sensor is on it.
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I had just this problem and a new sensor in the door mirror cured it but I believe it was difficult to fit (at
least that is what the garage said)
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the sensor on mine is below the front bumper look for a 5mm dome with wires.By the way my
temperature display reads in F.
Ditto. My XM is a 1990 registered vehicle. perhaps newer ones have more useful readouts. I wish I could
could get a reading in ’C and keep English messages!
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Citroen must have gone to some trouble to convert the display from degrees C to F, probably for the
American market (were XMs ever sold in the US ?).
My owners manual specifically states that the display is in Centigrade, but it aint !
By the way, does anyone know what it means if the little "F" is flashing
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The ‘C or ‘F flashes at 0,1,2 & 3 ‘C, to warn of the danger of Ice/Frost on the road!
It also flashes between 0 and -4 but then stops flashing below that! Presumably, the computer looks for
values between 0 and 4 but ignores the polarity.... a bug maybe?
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Hi temperature list,
Plus to minus 4 makes sense to me! That’s the danger zone for black ice. Above it’s too warm, and
below too cold. When temps drop lower, snow and ice become quite grippy again, the danger always is
at that inbetween stage.
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You can change the language by changing the fuses - whether a C/English combination is possible I
know not.
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My XM is a February 1990 model (UK RHD) and my temperature gauge reads in Centigrade and the
sensor is under the bumper, I appear to be on my own with this age/temp scale combo.
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