XC70 Climate Control Temperature Sensor - Replace or Repair?

Post by **abscate** » 28 Jul 2017, 04:49

1999-2000 are the "bastards"

2001- is P2

A late calendar year 2000 build will be a P2

Ms242245V70 · Post by **Ms242245V70** » 04 Sep 2019, 10:50

I soldered the thermister wires at the tips and my thermister is now working. Ordered a new one from Mouser anyway. 2001 v70 t5

DavidGP · Post by **DavidGP** » 19 Oct 2019, 15:14

Im trying to solve a similar issue....when I opened my CCM I found the resistor just split in two...isnt it supposed to have an actual resistance between the two wires?

Post by **abscate** » 20 Oct 2019, 06:43

That is a very high value resistor.

I don’t know if you can use a junkyard CCM but I would certainly try

DavidGP · Post by **DavidGP** » 20 Oct 2019, 07:10

Actually dug around the forums for a good hour and found out that people replaced/fixed this issue by getting a NTC Thermistor with similar values to fix the issue. Going to give it a shot this week, only 10$...

Post by **firstv70volvo** » 20 Oct 2019, 09:21

CCM notes and photos, includes thermistor replacement.

https://app.box.com/s/8m779rkh2pdglnxtcv69nsyhmnm8x1dt

DavidGP · Post by **DavidGP** » 20 Oct 2019, 09:37

Thanks

I already took everything appart though but that guide would have been usefull while doing it. Not that hard of a job but I guess Ill clean out the little fan while Im in there. Got my part on amazon, was 10$ for 100 NTC glass thermistors while a 10k value so technically should also work with plenty of spares...lol

Post by **cn90** » 08 Feb 2020, 13:05

My 2005 XC90 2.5T with 120K miles ...

In the process of cleaning the little vent (where the cabin sensor is located as in the video below), I damage the sensor. So far no issues with heat etc.

What do I need to do?
- Leave it alone?
- Is the sensor that crucial?
- Is the sensor available somewhere?

Post by **oragex** » 08 Feb 2020, 14:56

Broken thermistor will cause things like no rear windshield defrost, no heated seats, fluctuating or incorrect cabin heat - at least in auto mode, perhaps some more. The faster way is a walk to the junkyard, and undoing the black plastic piece that is housing the thermistor. I believe you can also get the sensor aftermarket (try to google the specs, perhaps 10kohm but needs other specs as well) however not sure how accurate or sensitive a cheap chinese one would be, so perhaps need to go with a good brand. The small fan behind the CCM will also be quite clogged. I made another video with more details accessing the thermistor

Post by **cn90** » 13 Feb 2020, 18:13

Thanks,

There is an ebay seller selling the Thermistor for Volvo HVAC panel.
Already bought it.
Will install in my 2005 XC90 this weekend and report back.

PS: The radio for XC90 is one BIG piece, so it is a bit different than S60 HVAC panel, but the idea is the same...

XC70 Climate Control Temperature Sensor - Replace or Repair?

Re: XC70 Climate Control Temperature Sensor - Replace or Repair?