Bricking it would be a legal minefield for them, they wouldnt dare. But making literally anything to do with servicing, updates and repairs such a colossal ball ache that its easier and cheaper to just pay for the heated seats...

I did speak a little broadly, they couldnt deny you the warranty on the wheel bearings or purely mechanical parts but they dont need to prove that the jailbreaking is the cause of literally anything electrical going to shit, they just need to say "That item is controlled by software that has been modified outside of manufacturers specifications, we are refusing to honor the warranty on this item"

Same with servicing "As this vehicle has been modified outside of our recommended parameters we cannot guarantee our repairs and as such we recommend the customer seek an alternative mechanical workshop for servicing and repairs"

Oh sure, you could fight it and win, you might join a class action and get $8 in 3 years time. Or... just dont jailbreak their product and make your life hell. I absolutely disagree with this subscription and paywall bullshit, but I do not underestimate the tomfuckery that big companies will pull to fuck customers.