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Home >> Ford >> 2021 >> Expedition XL, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Parking Aid - Vehicles With: Trailer Back Up Assist (TBA) >> Description And Operation >> Parking Aid - System Operation and Component Description >> Component Description >> PTBA Control Knob

PTBA Control Knob

The PTBA control knob is located on the instrument panel below the 4x4 rotary control switch (if equipped) and is used to enable the PTBA system and control the direction of the trailer.