IPD sale XeMODeX - Experts in Volvo Electronics
MVS-Amazon link helps MVS!

Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!

XC70 Climate Control Temperature Sensor - Replace or Repair?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

User avatar
abscate
MVS Moderator
Posts: 23743
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 443 times
Been thanked: 1336 times

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

Post by abscate »

1999-2000 are the "bastards"

2001- is P2

A late calendar year 2000 build will be a P2
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
Ms242245V70
Posts: 1
Joined: Sun Aug 18, 2019 9:26 am
Year and Model: 01V70T5
Location: KY

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

Post by Ms242245V70 »

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
Posts: 3
Joined: Sat Oct 19, 2019 3:12 pm
Year and Model: 2005 XC70
Location: Quebec

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

Post by DavidGP »

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?
Attachments
Resistor
Resistor
User avatar
abscate
MVS Moderator
Posts: 23743
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 443 times
Been thanked: 1336 times

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

Post by abscate »

That is a very high value resistor.

🤒

I don’t know if you can use a junkyard CCM but I would certainly try
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
DavidGP
Posts: 3
Joined: Sat Oct 19, 2019 3:12 pm
Year and Model: 2005 XC70
Location: Quebec

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

Post by DavidGP »

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$...
firstv70volvo
Posts: 166
Joined: Sat Mar 06, 2010 8:37 am
Year and Model: V70 T5 2001
Location: Sacramento, CA
Has thanked: 13 times
Been thanked: 17 times

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

Post by firstv70volvo »

CCM notes and photos, includes thermistor replacement.

https://app.box.com/s/8m779rkh2pdglnxtcv69nsyhmnm8x1dt
DavidGP
Posts: 3
Joined: Sat Oct 19, 2019 3:12 pm
Year and Model: 2005 XC70
Location: Quebec

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

Post by DavidGP »

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
cn90
Posts: 6916
Joined: Wed Mar 31, 2010 9:54 am
Year and Model: 2004 V70 2.5T
Location: Omaha NE
Been thanked: 164 times

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

Post by cn90 »

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?

2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+
User avatar
oragex
Posts: 5212
Joined: Fri May 24, 2013 6:20 am
Year and Model: S60 2003
Location: Canada
Has thanked: 102 times
Been thanked: 322 times
Contact:

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

Post by oragex »

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

cn90
Posts: 6916
Joined: Wed Mar 31, 2010 9:54 am
Year and Model: 2004 V70 2.5T
Location: Omaha NE
Been thanked: 164 times

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

Post by cn90 »

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...
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+
Post Reply
  • Similar Topics
    Replies
    Views
    Last post