Getting to ambient temperature sensor

fmorelli · 06-09-2017, 02:05 PM

I have a +122 deg temperature reading in the instrument cluster. Unfortunately the DME and CTM use information from this sensor.

The sensor is mounted inside the driver undertray assembly, in front of the wheel arch and behind the front bumper. Is there any way to get to this sensor without pulling the front bumper assembly?

Thanks,

Filippo

Xpuzzle · 06-09-2017, 04:41 PM

You can get to it by removing the driver side forward wheel liner. Good luck

NoQuarter · 06-09-2017, 08:43 PM

Yep.. wheel liner should do it.

bigendbob · 06-13-2017, 02:53 PM

Keep in mind a faulty temp sensor can stop the roof from working.

fmorelli · 06-13-2017, 04:02 PM

Ironically my car has been saying +122degrees (max value) for several weeks. Yet it only sets the P0072 error (ambient temp sensor voltage low) periodically. Kind of a mystery.

Filippo

06-09-2017, 02:05 PM	#1
fmorelli Lieutenant 162 Rep 561 Posts Drives: Atacama Yellow 35i Join Date: Mar 2016 Location: VA iTrader: (0)	Getting to ambient temperature sensor I have a +122 deg temperature reading in the instrument cluster. Unfortunately the DME and CTM use information from this sensor. The sensor is mounted inside the driver undertray assembly, in front of the wheel arch and behind the front bumper. Is there any way to get to this sensor without pulling the front bumper assembly? Thanks, Filippo __________________ 2011 35i MT Atacama ... lots of bits. Full Öhlins TTX custom suspension. Build thread. Build sheet. Currently finishing suspension, fuel, ignition system with Barry Battle @ 3DMMotorsport.
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06-09-2017, 04:41 PM	#2
Xpuzzle Private 5 Rep 64 Posts Drives: 2006 325i, 2011 Z4 35i Join Date: Jul 2011 Location: Chicagoland iTrader: (0)	You can get to it by removing the driver side forward wheel liner. Good luck
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06-09-2017, 08:43 PM	#3
NoQuarter Captain 164 Rep 906 Posts Drives: 2008 535xi / 2011 Z4 35Is Join Date: Jan 2011 Location: Indiana iTrader: (0) Garage List 2018 BMW X2 [0.00] 2008 535xi [0.00] 2011 Z4 35is [0.00]	Yep.. wheel liner should do it.
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06-13-2017, 02:53 PM	#4
bigendbob Second Lieutenant 50 Rep 297 Posts Drives: z4 23i Orion Silver Join Date: Jun 2012 Location: west midlands iTrader: (0)	Keep in mind a faulty temp sensor can stop the roof from working.
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06-13-2017, 04:02 PM	#5
fmorelli Lieutenant 162 Rep 561 Posts Drives: Atacama Yellow 35i Join Date: Mar 2016 Location: VA iTrader: (0)	Ironically my car has been saying +122degrees (max value) for several weeks. Yet it only sets the P0072 error (ambient temp sensor voltage low) periodically. Kind of a mystery. Filippo __________________ 2011 35i MT Atacama ... lots of bits. Full Öhlins TTX custom suspension. Build thread. Build sheet. Currently finishing suspension, fuel, ignition system with Barry Battle @ 3DMMotorsport.
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