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Old Apr 24th, 2019, 11:14   #8
julianps
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Last Online: Mar 28th, 2023 17:33
Join Date: Nov 2008
Location: Aberystwyth
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I cannot say my experience is identical, but it is similar.

My car is an MY'17 D2 manual and had the clutch/flywheel changed under warranty at 6k miles. It developed similar symptoms about 6months later where Volvo "... updated the software .." as a remedy.

Recently I approached a 30MPH board in 6th + brakes ... getting slower/closer, I changed down to third and released the clutch-pedal to find no throttle response (I do not recall losing power-steering or assisted-braking moreover the car did not judder on releasing the clutch - so, the engine was still running?).

I saw the centre section of the dashboard and all warning lights were blank but didn't notice if the mechanical rev/speedometer had stopped too.

Intending to bring the car safely to a stand-still I depressed the clutch pedal again, which brought back the dashboard and warning lights and with it a Stall Warning (depress the clutch to restart, etc.). This instruction was at variance with circumstances as the clutch pedal was already depressed!

I released the clutch pedal (again, no judder) to find throttle response restored. Very disconcerting, especially for the driver behind me!

My dealer has told me over the years Volvo had redesigned the clutch plate/DMF more than once and reading these pages it occurs to me more than one OP has complained about clutch-burn when using the mechanical parking brake for holding the car on a hill/hill-starts. One thread had Volvo dismissing a warranty claim on the grounds it was operator behaviour (i.e. poor driving style). It appears Volvo has changed the operating software to protect the transmission from heavy-left-feet/use of parking brake other than for parking.

A switch in the clutch master/slave system manages the Stop/Start & Stall Restore functions so short of an electro/mechanical gremlin that is failing to report itself via error codes this must now be intended functionality. As Clan has suggested, you might try running without Stop/Start for a while (you have to turn off each trip) and as Billggski has suggested change down gears sequentially, not skipping gears as you go.
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