I've tried three dealerships. They say yes initially and then when they search for the part based on the VIN they then say it's not available (and are as surprised as the rest of us). They basically tell me that they can try to shoe-horn in the update for another S90, but if it fails for some reason I won't get my money back. The common speculation is that all of the VINs beginning in L (Assembled in China) are excluded from this list... though nobody is sure if that's for a technical reason, an oversight, or politics.@JakeInPA - Maybe try a different dealership? I understand you already contacted Volvo but wouldn't hurt to just call up a nearby dealership, tell them you have an MY18 S90 T6 and want to get the Polestar optimization installed. Don't mention anything about it being an L model or the talk you've had with the other dealership. Worth a shot, IMO.