Steering - Mercedes-Benz E-Class Series 207 Service Manual

Steering

AGILITY CONTROL steering
The AGILITY CONTROL steering is installed as stan-
dard equipment. The rack-and-pinion steering with
safety steering column is located in front of the
center of the wheels and produces desirable under-
steering self-steering behavior under lateral force.
Speed-sensitive power steering
A speed-sensitive power steering system with vari-
able centering can be installed as special equip-
ment. Both the manual force curve and the self-
centering function of the steering are dependent on
the vehicle speed.
Vehicles with the optional sports suspension and
vehicle dynamics package are fitted with a steering
gear with a more direct steering ratio which under-
scores the sporty character of these items of
special equipment.
The steering gear housing is a two-piece compo-
nent. The steering gear housing and valve housing
are made of aluminum, and the steering rack is hot-
forged steel. The steering gear is rigidly connected
with the frame-type integral support.
i Note
Vehicles for the USA/Canada are equipped with a
standard steering gear which has been specially
adapted for these markets.
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Introduction of the New E-Class Coupé, Model Series 207
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– This printout will not be recorded by the update service. Status: 01 / 2009 –
Electrically controlled power steering pump
(ECO)
The ECO power steering pump is used as standard
to improve consumption figures as it has a very low
energy demand in straightahead running. An addi-
tional electrically actuated proportional solenoid
valve controlling a bypass opening at the pressure
connection delivers oil to the steering gear on
demand. This oil quantity and therefore the flow
pressure in the steering system are minimal when
driving straightahead.
Steering column
The standard-equipment steering column is manu-
ally adjustable for length and height. An electrically
adjustable version with easy-entry function is
offered as special equipment in the memory
package.
i Note
If the driver's body impacts with the steering
column, the steering column moves forward by up
to 100 mm under a predefined force in order to
reduce the loads on the driver. For this purpose
the entire substructure of the steering column
tube is suspended on a slide that runs in a
mounting console rigidly mounted in the body.
In the event of a severe frontal impact the lower
part of the steering column can telescope and the
integral corrugated tube can deform.