X Series E70 X5 3.0Sd (M57T2) OFFRD
31 90 ...
Troubleshooting - steering acoustics
Phenomenon
Driving manoeuvre
Reason
Remedy
Clicking/grating from
steering column
When stationary without
engine running, apply
different torques to
steering wheel in both
directions
Steering column to
steering spindle centre
section connection not
tight enough
Retighten steering column to
steering spindle centre section
clamping screw to 32 Nm + 90
°
.
Knocking during
alternating steering
When stationary
with/without engine
running
Insufficient greasing of
thrust member
Regrease back of rack and thrust
member in power steering gear.
Hydraulic rattling
Drive at approx. 20 to 30
km/h with wheels not
entirely turned over cleat
Air in steering return
Check operational status of return
line; if necessary, replace return
line with a current version.
Muffled noise at end
stop
When stationary with
engine running, steer to
end stop with different
levels of force
Tolerance phenomenon of
pressure relief valve in
pump
Replace power steering pump if
pump status is worse than
estimation index 6.
Turn-in hissing
When steering from
centre position when
stationary
Presumably tolerances at
valve control edges
Heat steering system and allow
gas to escape overnight. Further
remedies are currently not
examined.
Leak valve hissing
at end stop
At end stop (both sides)
Tolerances in leak valve of
active front steering power
steering gear
Replace power steering gear if
steering gear status is worse than
BI 6.
Scraping at active
front steering power
steering gear
3-point turn
Manufacturing tolerances
in active front steering
power steering gear
(between actuator and
worm gear)
Replace power steering gear if
steering gear status is worse than
BI 6. The limit sound curve is
currently being determined.
Pump whining -
Dynamic Drive
Engine revving when
stationary
Transmission of structure-
borne noise to Dynamic
Drive power steering pump
to pressure lines
Check holder concept of pressure
lines for current status and correct
installation, modify if necessary.
If then not OK: Replace power
steering pump.
Restrictor whistling
(N62 and N52 with
Dynamic Drive)
Whistling irrespective of
speed with fluid at normal
operating temperature
when stationary
Alternating steering
briefly eliminates the
nose
Sharp-edged restrictor in
return
Replace return line.
Rattling
Parking when stationary
with service brake
pressed to low coefficient
of friction
Undamped vibration in
steering system
Check holder concept of pressure
and return lines for current status
and correct installation, modify if
necessary.
If then not OK: Replace power
steering gear.
RA Troubleshooting - steering acoustics
BMW AG - TIS
05.02.2013 04:28
Issue status (12/2007) Valid only until next DVD is issued
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