Affected models are fitted with the 6R80 automatic transmission, in both all-wheel and rear-wheel drive configurations.
The recall centres on a fault in the Output Shaft Speed sensor, located at the transmission. As its name suggests, the sensor monitors the speed of the output shaft, providing the car's control system with the information needed to allow for smooth, safe and efficient shifting.
Ford says that a failure with the sensor could result in a sudden and unexpected change down to first gear, which could lead to "an abrupt wheel speed reduction", causing the rear tyres to slide or lock up until the vehicle slows.
Owners are advised to drive with caution, and at moderate speed, if at all.
SZ Territory vehicles built from 19 September 2011 to 5 February 2013
PX Ranger vehicles built from 5 November 2011 to 7 November 2012
Ford will contact affected owners by mail, although concerned owners may also contact Ford's Customer Relationship Centre on 1800 503 672.