General Description

Rack And Pinion Steering With SPS Functions (Part 1 Of 2):

Rack And Pinion Steering With SPS Functions (Part 2 Of 2):

NOTE:
^ Numbers in parentheses ( ) indicate a component or tool in the associated illustration.
^ For description and operation information on Electronic Traction System (ETS), Acceleration Slip Regulation (ASR) or Electronic Stability Program (ESP) systems, refer to Brakes And Traction Control
^ To find additional descriptive information available on a steering system, locate the required information on the table above, then click on the selected highlighted box to be taken to the next level of information.
^ Use any highlighted boxes at he next level to find a additional levels of information.

The Speed-sensitive Power Steering (SPS) increasingly assists the manual force at the steering wheel from a speed less than 100 km/h (62 mph) until the vehicle is stationary. At speeds greater than 100 km/h (62 mph) the steering effort assistance is as on conventional power steering.

The basic function of speed-sensitive power steering includes the conventional power assistance of the rack-and-pinion steering.

Vehicle speed serves as a parameter which with the aid of electronics adapts the hydraulic reaction via the SPS P-valve (Y10) to the requirement in the speed range of 0-100 km/h (0-62 mph).

The electronic control program for SPS is included in the control module of the respective traction system, as the vehicle is equipped.