The car may be doing a Regen of the exhaust particle filter which stops the stop start function until it has been completed, a 20 minute run above 45 mph will complete this process if it is that and also put charge in your battery
If you are doing short runs it may not be long enough to complete the regeneration process.
https://www.volvocars.com/uk/support...-stop-function
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XC90 Inscription D5 Power pulse, 2017 MY, Savile grey, Blond Nappa, Leather dash/door tops, Walnut inlays, Dark tinted windows, Air suspension, Bliss/Cross traffic alert, Xenium/7 seat comfort/Family/Winter packs, 4 zone climate, Heated rear seats.
Last edited by nu11eaf; Mar 27th, 2020 at 21:09.
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