S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

What is this?

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Old Sep 24, 2015 | 11:25 AM
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mrbobby's Avatar
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From: Kingsville Ontario (South of Detroit)
2003 S500 4Matic (SOLD) + 2004 S55 (SOLD) 2005 CLK 500 Cabriolet 2008 S 450
What is this?

This is on the dash to the left of the

start button. It looks like an LED







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Old Sep 24, 2015 | 11:53 AM
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2015 S550
I believe that is the interior or body temperature sensor.

Last edited by DaveW68; Sep 24, 2015 at 12:17 PM. Reason: Samsung needs to work on their auto-correct.
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Old Sep 24, 2015 | 05:39 PM
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Mercedes-Benz 2007 S550, 2012 S550 4-Matic, 2014 S550 (Traded), 2015 GL450
Originally Posted by DaveW68
I believe that is the interior or body temperature sensor.
That is correct. To see how responsive it is, put your finger on top of it with the climate control on auto. You will shortly hear the fan speed increase to compensate.
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