Update: I downloaded all config settings from the 2024 XC90 B6 I had as loaner this week and this was set as "03 Heat calibration 3". I've set it on mine and they do seem to get hotter now. The loaner had the thick/rougher leather Momentum style seats instead of the sueded & perforated on my R-Design. Would love to see the available temps for this like on P3Tool for our 2017 XC60 - unfortunately they don't seem to be the same values.
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2019 XC90 T6 R-Design
2020 XC60 T5 Momentum
Bright Silver Metal
Advanced, HK, Multimedia, Premium, Heated Steering Wheel, 20s
2019 XC90 T6 R-Design
Passion Red
4C, Advanced, B&W, CF Inlays, Heated Steering Wheel/Rear, Polestar, 20s2020 XC60 T5 Momentum
Bright Silver Metal
Advanced, HK, Multimedia, Premium, Heated Steering Wheel, 20s