traction control BMW X5 4.8IS 2006 E53 Owner's Manual

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xDrive HDC Hill Descent Control xDrive is the 4-wheel drive system of
your X5. The combined effects of xDrive
and DSC further optimize the traction
and dynamic driving characteristics.
The 4-wheel drive system xDrive vari-
ably distributes the drive torque to the
front and rear axle depending on the
driving situation and prevailing road
conditions.MalfunctionsPlease be sure to read the information
on the DSC Dynamic Stability Control/
xDrive warning lamp on page 22 and on
the possible lamp combinations that
can light up on page 20.
The concept HDC is a system for driving downhill in
steep terrain. This system reduces vehi-
cle speed on steep downhill gradients,
thus allowing you to maintain even bet-
ter control of your BMW under these
conditions.
The vehicle moves at slightly more than
walking speed without active interven-
tion from the driver.
HDC is available for activation at vehi-
cle speeds below approx. 20 mph/
35 km/h. When driving down steep hills
with a speed below approx. 20 mph/
35 km/h, the vehicle reduces speed
automatically down to slightly more
than walking speed, approx. 5 mph/
8 km/h, and then maintains this speed
at a constant.
You can use the accelerator or brakes
to vary this automatically controlled
speed within a range extending from
approx. 3 mph/5 km/h to 15 mph/
25 km/h.
You can specify a target speed within
the same range by using the +/– but-
tons of the cruise control.
HDC is automatically deactivated once
vehicle speed again exceeds approx.
35 mph/60 km/h.
Activating system Press the button; the LED lights up.
The LED flashes when the brakes are
applied automatically. Deactivating system Press the button again; the LED goes
out.
HDC is deactivated automatically above
a road speed of approx. 35 mph/
60 km/h and when the ignition is
switched off. 530de416

136n
Moving parts should be allowed to
break in. To ensure that your vehicle
provides maximum economy through-
out a long service life, we request that
you comply with the following instruc-
tions:
Engine and differential Obey your local and state maximum
speed limits.
Up to 1,200 miles/2,000 km:
Drive at varying engine speeds and
road speeds, but do not exceed
4,500 rpm and the following road
speeds during this initial period:
>6-cylinder engine
100 mph/160 km/h
>8-cylinder engine
106 mph/170 km/h
Avoid full-throttle operation and use of
the transmission's kick-down mode
during these initial miles.
From 1,200 miles/2,000 km:
The engine and vehicle speed can
gradually be increased.
Tires Due to technical factors associated with
their manufacture, tires do not achieve
their full traction potential until after an
initial break-in period. Therefore, drive
reservedly during the first 200 miles/
300 km.
Obey your local and state maximum
speed limits.
When the vehicle is operated on
wet or slushy roads, a wedge of
water may form between the tire and
the road surface. This phenomenon is
referred to as hydroplaning and can
lead to partial or complete loss of trac-
tion, vehicle control and braking effec-
tiveness. Reduce your speed on wet
roads.< Brake system Brakes require an initial break-in period
of approx. 300 miles/500 km to achieve
optimal contact and wear patterns
between brake pads and rotors.
To break in the separate handbrake
drums, apply the handbrake lightly
when coasting to a standstill at a traffic
signal, for instance, provided that traffic
conditions allow you to do so.
To avoid corrosion, repeat this proce-
dure from time to time.
The brake lamps do not light up
when the handbrake is applied.
Vacuum for the brake system servo unit
on your BMW is available only when the
engine is running. When you move the
vehicle with the engine switched off,
when towing, for instance, substantially
higher levels of pedal force will be
required to brake the vehicle.< ClutchThe function of the clutch is only at its
optimized level after a distance driven
of approx. 300 miles/500 km. During
this break-in period, engage the clutch
gently.Following component
replacementsObserve the break-in instructions again
if previously addressed components
must be replaced again during subse-
quent driving.
Breaking-in

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OverviewControlsMaintenanceRepairsDataIndex
Tire identification marksKnowledge of the labeling on the side
of the tire makes it easier to identify and
choose the right tires.Tire sizeSpeed code letter:
Q = up to 105 mph/160 km/h
T = up to 118 mph/190 km/h
H = up to 131 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/hTire Identification Number Tires with DOT codes meet the guide-
lines of the U.S. Department of Trans-
portation. e.g.
Nominal width
in mm
Cross-sectional ratio
in Ξ
Belted construction
radial
Rim diameter in inches
Load index,
not with ZR tires
Speed code letter,
with ZR tires before the R
235/65 R
17104H
DOT code: Tire age The manufacturer of your BMW recom-
mends that all tires, i.e. including the
spare wheel, be replaced regardless of
the actual wear after 6 years at the lat-
est.
The tire's date of manufacture is indi-
cated on the sidewall:
DOT... 2605 indicates that the tire was
manufactured in week 26 of 2005. Uniform Tire Quality Grading Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example: e.g.
Manufacturer's code
for tire brand
Tire size and tire model
Tire age
DOT xxxx xxx 2605
DOT Quality Grades Tread wear
Traction AA A B C
Temperature A B C
All passenger car tires must con-
form to Federal Safety Require-
ments in addition to these grades.< Tread wear The tread wear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled condi-
tions on a specified government test
course.
For example, a tire graded 150 would
wear one and one-half, 1γ, times as
well on the government course as a tire
graded 100. The relative performance
of tires depends upon the actual condi-
tions of their use, however, and may
depart significantly from the norm due
to variations in driving habits, service
practices and differences in road char-
acteristics and climate.

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Tire identification marks Wheel/tire condition Traction The traction grades, from highest to
lowest, are AA, A, B, and C.
Those grades represent the tire's ability
to stop on wet pavement as measured
under controlled conditions on speci-
fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
The traction grade assigned to
this tire is based on straight-ahead
braking traction tests, and does not
include acceleration, cornering, hydro-
planing, or peak traction characteris-
tics.< TemperatureThe temperature grades are A, the
highest, B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive tem-
perature can lead to a sudden flat tire.
The grade C corresponds to a level of
performance which all passenger car
tires must meet under the Federal
Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels
of performance on the laboratory test
wheel than the minimum required by
law.
The temperature grade for this tire
is established for a tire that is
properly inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either separately or
in combination, can cause heat buildup
and possible a tire failure.< M+SWinter and all-season tires.
These have better winter properties
than summer tires.
Wheel/tire damage Inspect your wheels and tires frequently
for tread wear, signs of damage and for
foreign objects lodged in the tread.
Check the tread pattern depth.
Please note that low-profile tires
make your wheels, tires and sus-
pension parts more susceptible to road
hazard and consequential damages.
Unusual vibrations encountered during
normal vehicle operation can indicate
tire failure or some other vehicle mal-
function. This can, for example, be
caused by driving over curbs. This is
also true for irregularities in the vehi-
cle's handling characteristics, such as a
pronounced tendency to pull to the left
or right. Should this occur, respond by
immediately reducing your speed.
Carefully proceed – or have your vehicle
towed – to the nearest BMW Sports
Activity Vehicle center or tire dealer to
have the wheels or tires inspected.
Tire damage, extending to sudden and
complete loss of pressure in extreme
cases, can pose a potentially lethal
safety hazard for the vehicle's occu-
pants and other road users alike.<

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OverviewControlsMaintenanceRepairsDataIndex
Replacing wheels/tires Snow chains
*
Special features of winter tires BMW recommends winter tires for use
in cold winter driving conditions.
Although all-season M+S tires provide
better winter traction than summer
tires, they generally fail to provide the
same levels of cold-weather perfor-
mance as winter tires.
When switching to winter tires, observe
the description under Tire condition,
page146, and Replacing wheels/tires.
Observing speed ratings:
Never exceed the maximum
speed for which the winter tires
are rated. Unprofessional attempts by
laymen to service tires can lead to dam-
age and accidents. Have this work per-
formed by skilled professionals only.
The technicians at your BMW Sports
Activity Vehicle center will be glad to
assist you with the required profes-
sional knowledge and specialized
equipment.<
Storage Store wheels or tires in a cool, dry
place, protecting them against light
whenever possible. Always protect tires
against all contact with oil, grease and
fuels.
Do not exceed the maximum tire infla-
tion pressure indicated on the side wall
of the tire.Only certain fine-link snow chains are
tested, classified as road-safe, and rec-
ommended by BMW. Consult your
BMW Sports Activity Vehicle center for
details. Use is only permitted in pairs on
the rear wheels with the following tire
sizes:
X5 4.8is: 255/55 R 18
All other models: 235/65 R 17
Follow the manufacturer's instructions
when installing snow chains. Do not
exceed a maximum speed of 30 mph/
50 km/h.
Do not initialize the Flat Tire Moni-
tor after mounting snow chains, as
the monitor may then incorrectly indi-
cate flat tires.
When you are driving with snow chains,
it can be beneficial to switch off DSC
briefly, refer to page93.<

Everything from A to ZTires
age145
breaking-in136
changing148,165
condition146
damage146
DOT Quality Grades145
flat165
inflation pressure141
size145
storage149
traction146
tread147
tread wear145
Uniform Tire Quality
Grading145
wear indicators, refer to
Tire tread147
winter tires149
Tools, refer to Onboard tool
kit160
Torque
engine180
lug bolts170
Tow bar176
Tow fittings175
Towing the vehicle175,176
with automatic
transmission176
Tow-rope177
Tow sockets for tow
fitting176Tow-starting175
Track width, refer to
Dimensions181
Traction146
Traction aid, refer to DSC
Dynamic Stability
Control92
Traction control, refer to
DSC Dynamic Stability
Control92
Transmission
automatic transmission
with Steptronic65
manual transmission64
Transmission lockout, refer
to P Park66
Transmission malfunction,
refer to Malfunction67
Transporting children
safely57
Transport securing device,
refer to Securing load131
Tread depth, refer to Tire
tread147
Tread wear145
Trip-distance counter, refer
to Trip odometer
73
Trip odometer73
Trunk lamps, refer to Cargo
area lamps103Trunk lid, refer to
Liftgate35
Tailgate36
Turning circle, refer to
Dimensions181
Turn signals68
indicator lamp22
replacing bulbs162,163
Turn signals, side, replacing
bulbs162
TV function, refer to Owner's
Manual for Onboard
Computer
TV set, refer to Owner's
Manual for Onboard
Computer
Two-axle self-leveling
suspension
display96
lowering97
raising97
U
Underbody protection, refer
to Caring for your vehicle
brochure
Uniform Tire Quality
Grading145
Units,
temperature73,80,109Universal garage door
control, refer to Integrated
universal remote
control114
Universal remote control114
Unlocking
from inside34
from outside31
hood150
Using antifreeze152,154
V
Vacuum cleaner,
connecting, refer to
Sockets121,128
Valve
inserts170
screw caps170
Vehicle
battery171
breaking-in136
care, refer to Caring for
your vehicle brochure
cargo loading130
measurements, refer to
Dimensions181
parking63
storage, refer to Caring for
your vehicle brochure
washing, refer to Caring for
your vehicle brochure
weight182