Steering System: Description: General

Rack and pinion steering is introduced on Range Rover for the first time. A ZF power assisted steering rack is fitted on the front subframe. The rack is a conventional end take-off rack and pinion power assisted unit with the addition of ZF Servotronic 2 assistance.

Servotronic 2 adds electronic control and speed sensitive steering to the steering rack. The Servotronic 2 feature provides easy and comfortable steering operation when parking, improved ROAD FEEL at increased road speeds and adds an integrated, positive center feel feature which optimizes steering wheel torque during high speed driving.

The Servotronic 2 system is controlled by software which is incorporated into the Body Control Unit (BCU). The software responds to steering torque inputs and road speed signals and controls the assistance via a transducer valve located on the steering rack valve.

The steering column features fully electrical adjustment for tilt and reach. On vehicles fitted with memory seats, the steering wheel position control is incorporated into the memory seat ECU.

The column also features an electronically controlled steering lock. The lock is operated when the ignition switch senses that the correct key has been inserted. An ECU, located inside the steering column, controls a motor operated lock, releasing the steering lock when appropriate.