I am not used to the term service brake either.

On a couple of the bigger trucks I have driven they had a brake button on the dash. I didn't drive a lot of bigger trucks so I am not sure what it was called but you set it when you parked.

While in high school I had a Mustang II. The pull handle between the seats identified as a drift enabling lever.

I also had a 66 Charger pop a wheel cylinder. While going down a slight incline the brake pedal decided to identify as an accelerator.