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'where on the lap' => GPS co-ordinates are woven into the control unit that sends voltage/current to the MGU-K ?
I mean it's pretty clear they have preset deployment strategies that will change how the energy is deployed over the lap depending on what is optimal. Say you have a faster driver right on your rear, you may want to save most of your deployment for the straights then, whereas in normal conditions it would be optimal to deploy it more evenly across the lap. Teams can certainly do that with different deployment strategies. I would assume it's controlled through GPS but I don't know.
They can do strat changes whenever, you can see it in the transcript on lap 9, it's just that they always give a certain strat instruction in the pit lane. "Strat 12" IIRC.AR3-GP wrote: ↑26 Nov 2025, 22:39They do strat changes in the pitlane during the race,but not permitted once you leave the pitlane iirc. Yuki messed this up in Zandvoort which is why he didn't have the right pedal mapping after the stop and was told he would have to drive with the "issue". So I think strat is related to the ICE.
However I often hear "engine 11 when you can, not urgent". I don't know what that means. So there are not only "Strat", and "mode" settings but also "engine" settings.
There are two hybrid systems (MGU-H and MGU-K) so it's possible that explains the different messages.
Okay, then it looks like some strat modes change a setting which can only be changed in the pitlane, but not all strat modes.Badger wrote: ↑26 Nov 2025, 22:51They can do strat changes whenever, you can see it in the transcript on lap 9, it's just that they always give a certain strat instruction in the pit lane. "Strat 12" IIRC.AR3-GP wrote: ↑26 Nov 2025, 22:39They do strat changes in the pitlane during the race,but not permitted once you leave the pitlane iirc. Yuki messed this up in Zandvoort which is why he didn't have the right pedal mapping after the stop and was told he would have to drive with the "issue". So I think strat is related to the ICE.
However I often hear "engine 11 when you can, not urgent". I don't know what that means. So there are not only "Strat", and "mode" settings but also "engine" settings.
There are two hybrid systems (MGU-H and MGU-K) so it's possible that explains the different messages.
But in 2020 the FIA clamped down on these ‘party modes’, as Mercedes once cheekily dubbed them. Since then, only one engine mode has been permitted from qualifying to the end of the race. Drivers may only change it in three cases: when the car is stationary with the engine off, in an officially wet race, or in the pitlane.
Because a different mapping matters more from a standstill than in race trim, drivers routinely switch to ‘launch mode’ as they enter the pitlane, then return to standard mode after their pitstops.
That is when things went wrong for Tsunoda. “It'll be strat 12 in the pitlane, strat 12,” race engineer Richard Wood reminded him on pit entry. And after the stop: “Strat 11, strat 11.” But Tsunoda apparently failed to execute the switch immediately.
“Okay, so we are stuck in the pedal map,” he was told. “It's a very flat pedal up between 15% and 40%.” In other words, throttle response between 15 and 40 percent pedal travel was now completely different – optimized for a launch, not for sustained racing.
There's more to the "engine" setting. There's always an additional parameter that goes with it. These two messages where communicated to Perez in Bahrain 24 in a span of 5 minutes:
Yelistener believes GPS to locate a car's position is forbidden for purposes of mgu-k deployment strategies:
