The phrase "dead pedal" refers to a footrest in a car that is not used for operating any controls. It is just there for resting your foot while driving.
Sentences with «dead pedal»
There is no touchscreen infotainment system, rear A / C vents, dead pedal for the driver, automatic lights / wipers etc.. (cardekho.com)
The driving position is excellent, with a prominent dead pedal and very good sight lines. (automobilemag.com)
Lastly, there's a nice, fat dead pedal. (cars.com)