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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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One side heating ?Views : 1451 Replies : 28Users Viewing This Thread : |
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Nov 5th, 2021, 01:14 | #1 |
Master Member
Last Online: Mar 20th, 2024 17:44
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Location: Manchester
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One side heating ?
With the cold snap today we had the heating on in the 2006 XC90. But only the drivers side was blowing warmer air - the passenger side was blowing cold air.
All switches etc were lit and working as expected to blow warm - but no warm air for the passenger :-( Any suggestions where to look first? Would a code read help ? Thanks for any input - John |
Nov 5th, 2021, 09:53 | #2 |
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Hello John.
I would say yes to codes, must be through Vida or a car specific reader though, generic readers won't find the climate control units. I don't know specifically for the XC90 however on the V70 P2 which is a very close relation, it's usually a problem with stuck flaps on the climate unit that can be motor or position sensor failure. |
Nov 5th, 2021, 11:02 | #3 |
Petrolhead+Lots of Diesel
Last Online: Today 16:20
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Location: Glasgow
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Put money on it being the AQS sensor in the scuttle air intake. Exactly the symptoms I had, about £95 from Volvo.
PIA to get to it as the wiper arms and the scuttle needs to be removed, then a bit of contortion where you really cant see what you are doing to twist to remove the sensor. Once replaced heating was back to normal. I would have thought the AQS would have thrown a fault code but may be wrong. Hope it helps
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BMW X3 Msport MHEV 2020MY & VW Beetle Design 1.2Tsi DSG 2014MY Previous XC90 D5 SELux Geartronic 2009MY Last edited by TruckbusUK; Nov 5th, 2021 at 11:40. |
Nov 5th, 2021, 12:42 | #4 |
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Found a YT video on replacing the AQS - does look fiddly - albeit straigtforward. Might be good to get a code read to see if it could be something else.
How easy is removing the scuttle to get at it - I have never done that ? |
Nov 5th, 2021, 12:53 | #5 | |
Petrolhead+Lots of Diesel
Last Online: Today 16:20
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Quote:
The AQS removal, I ended up getting my daughter with small hands rather than my shovels to twist it out.
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BMW X3 Msport MHEV 2020MY & VW Beetle Design 1.2Tsi DSG 2014MY Previous XC90 D5 SELux Geartronic 2009MY Last edited by TruckbusUK; Nov 5th, 2021 at 12:55. |
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Nov 5th, 2021, 15:18 | #6 |
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Further digging finds the thread below - where Clan and others state....
"The AQS will not be the cause but likely to be i wouldn't know about that , but his first problem with blowing too cold one side has nothing to do with the AQS just about all the cars fitted with them over 8 years old have the AQS failed fault code and contunue to work properly . The fault is probably a faulty driver's side air temperature flap motor" Any thoughts on that chaps? https://www.volvoforums.org.uk/showthread.php?t=246271 |
Nov 5th, 2021, 16:20 | #7 | |
Petrolhead+Lots of Diesel
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Quote:
I'd try and get the codes read, as I was advised by my dealer that the AQS being faulty can bring the bus down that controls the heater flaps etc. OH!, and the passenger heat would not heat, after replacing the unit, again normal function restored.
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BMW X3 Msport MHEV 2020MY & VW Beetle Design 1.2Tsi DSG 2014MY Previous XC90 D5 SELux Geartronic 2009MY Last edited by TruckbusUK; Nov 5th, 2021 at 16:24. |
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Nov 5th, 2021, 16:54 | #8 |
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Last Online: Mar 20th, 2024 17:44
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Thanks will try and get the codes read and may just take a punt.
Do you know the Volvo part number you got ? And what MY and engine do you have? Though I suspect there may be more than one and it would be good to know which one to get for my April 2006 XC90 2.5 T SE. Cheers EDIT: Just noticed that you are selling lots of spares after selling the beast - and it looks to be a later model and diesel than mine Last edited by John Brennand; Nov 5th, 2021 at 17:14. |
Nov 5th, 2021, 17:36 | #9 | |
Petrolhead+Lots of Diesel
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Quote:
FRF can advise ... they supplied mine.
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BMW X3 Msport MHEV 2020MY & VW Beetle Design 1.2Tsi DSG 2014MY Previous XC90 D5 SELux Geartronic 2009MY |
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Nov 5th, 2021, 21:17 | #10 |
Petrolhead+Lots of Diesel
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AQS for my 2009MY was 31348901, cost was £79.63 + vat
Got it from FRF using the C3 code for the forums discount. Best check, but I would think/guess all the post facelift cars use the same sensor.
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BMW X3 Msport MHEV 2020MY & VW Beetle Design 1.2Tsi DSG 2014MY Previous XC90 D5 SELux Geartronic 2009MY |
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