Never worked since you bought it? Check thermistor behind the little slotted section on the climate panel, make sure it's intact and not broken/bent. Area of the slotted section should be clean and free of debris (blow out or vacuum if not). See attached for reference- https://www.volvoforums.org.uk...

As above, my personal experience- https://forums.swedespeed.com/showthrea ... mall-leak)

May not be your issue but easy enough to validate and omit.

If you drop the spare and look in the cavity towards the front of the car, think you'll see it. Dredged this link up for reference-https://forums.swedespeed.com/showthread.php?213487-PO442-Check-engine-light Someone else had a problem with the hose coupler that connects the front and rear long evap ...

Per the Volvo documentation- Diagnostic trouble code BCM-C008217 is generated if the brake control module (BCM) registers that battery voltage exceeds 18 V. Diagnostic trouble code BCM-U012600 is generated if the brake control module (BCM) registers that there is no signal from the steering angle se...

If the MVS cross-reference https://www.matthewsvolvosite.com/volvo-1999-and-newer-codes is correct (no reason to suggest it’s not), and you have a portable copy of VIDA available, all the codes map out to a fuel-air mixture problem as RHP alludes above. Highly likely not the airbox (bottom rear of m...

Mobil 3309 and Toyota T-IV are the most commonly used replacement fluids for the AW5x and TF-80SC transmissions as far as I have ever used or seen. Other fluids are JWS 3309 compatible but these two fluids have been used consistently over time with good result. I have used the Mobil 3309 product for...

Someone on another Volvo centric site that does not play well with inline attachments was asking about XC90 lift and rest points.
For what it's worth- Another link- viewtopic.php?t=30319#p137040

110218- add link

Hub maybe, it's oil pressure controlled by the solenoid controlling the hub position, ECM maps the angle it wants the camshafts to be and reads the sensor on the back as a "loop". Loop is not being completed fast enough and the code is being thrown. If there's enough oil pressure and the s...

There is another post by the same author on Swedespeed- https://forums.swedespeed.com/showthread.php?586341-2007-XC-90-Front-Strut-amp-Spring-Assembly XC90 has 3 springs and 3 struts called out, suspension code label (back side of passenger B-pillar) is key to determining correct fitment if this is ...

I have done this 3 times now, and have purchased a couple of donor keys because I never seem to get the "fix" to last longer than about 6 months before the case splits. Super glue, epoxy, surface prep or not, eventually they all separated. Had some hardware around and put in a little torx ...