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its the little slots on the front of the HVAC control. there is a fan that draws air across the sensor. it can clog up with dirt and need to be cleaned. There should be a write up or two, but its painfully simple.
 

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blow it out with a can of compressed air.
 

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Discussion Starter #4
How do you pull the face of the climate control off? Don't want to break anything! I have a new sensor here just to be sure. Thanks for the responses!
 

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actually, I lied, its not that easy unless there is a way to get it out without removing the radio? If not, remove the radio following the instructions, then the HVAC control pops out . You can actually remove the fan assembly from the rear of the unit without disassembling anyting. Blow it out with compressed air, then I think I hit my sensor with MAF cleaner.

mind if I ask why you are replacing?
 

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Discussion Starter #6
Wow so I need to remove the entire nav thing in order to get the face of the HVAC unit off?

I was experience very occasional less than perfect climate control, so as is my style, I'm replacing the resistor pack for the blower and the cabin temp sensor. Not seeing an easy way to get this thing out, not much on a search, either.

Ian
 

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Where do you get the sensor from? The sensor (some kind of thermistor) is soldered onto the HVAC module pcb.
 

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Discussion Starter #10
I purchased it from the dealer. It is a couple inches long and plastic. Anyone have any good pics on how to remove the climate control face? Changing that resistor for the blower definitely stabilized performance, even though it was working well before.
 

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I purchased it from the dealer. It is a couple inches long and plastic. Anyone have any good pics on how to remove the climate control face? Changing that resistor for the blower definitely stabilized performance, even though it was working well before.
Does it looks like #1 in the picture attached? If yes, it is not cabin temp sensor. It's outside or ambient temp sensor. Mounted under the front bumper driver side NOT inside your HVAC control module.
 

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its the little slots on the front of the HVAC control. there is a fan that draws air across the sensor. it can clog up with dirt and need to be cleaned. There should be a write up or two, but its painfully simple.
I've cleaned the front of the sensor grill with a toothbrush, removed lots of embedded dust.
 

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I purchased it from the dealer. It is a couple inches long and plastic. Anyone have any good pics on how to remove the climate control face? Changing that resistor for the blower definitely stabilized performance, even though it was working well before.
You bought an outside temp sensor. Part number ends in a 133 doesn't it? If the outside temp sensor is missing or bad it can cause the compressor to not to kick on. There is not a replaceable interior temp sensor, at least not one made by BMW.
 

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Discussion Starter #14
The part number I got was 64-11-6-930-015

My outside temp sensor is working just fine, I know they get hit a lot being in the fender. Also, my climate control is working fine too, I'm just anal about maintenence. I still haven't tried to put it in, but looks like there is nothing to put in.

Thanks!
 

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Kaboom, The part you have listed is the Heater core temp sensor. It engages the Heater Valve to open and allow coolant to flow through the Heater core.
 

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You can disassemble the climate control unit to more thoroughly clean the dust out. The motor is a brushless type consisting of a small flat squirrel cage fan wheel that sits on top of a post on the circuit board. To dissassemble the unit you need an electronics Torx screwdriver set. That fan wheel can cake up with dust pretty bad. At this point you can clean the little sampler grille from the backside which is more thorough. I put a tiny drop of pure Teflon oil on top of the post before I put the wheel back on top of it & reassemble.
 
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