2008 BMW X3 3.0SI stop start

Reference
At a glance
Controls
Driving tips
Mobility
83
Saving fuel
The fuel consumption of your vehicle is depen-
dent on various factors. You can improve your
vehicle's fuel consumption and reduce the
strain on the environment with several mea-
sures, your driving style and regular mainte-
nance.
Removing unnecessary cargo
Additional weight increases fuel consumption.
Removing attached parts following use
Remove auxiliary mirrors, roof or rear luggage
racks which are no longer required following
use. Attached parts on the vehicle impair the
aerodynamics and increase the fuel consump-
tion.
Closing windows and panorama glass
sunroof
An open panorama glass sunroof or an open
window also increases the aerodynamic drag,
and with it the fuel consumption.
Checking tire inflation pressures
regularly
Check the tire inflation pressures at least twice
a month and before starting off on a longer trip
and correct them if necessary.
An insufficient tire inflation pressure increases
the rolling resistance, therefore increasing fuel
consumption and tire wear.
Driving off immediately
Do not allow the engine to warm up by leaving it
running while the vehicle remains stationary.
Instead, drive off immediately at a moderate
engine speed. This enables a cold engine to
reach its operating temperature most rapidly.
Looking well ahead when driving
Avoid unnecessary acceleration and braking by
maintaining a corresponding distance to the
vehicle driving ahead. Driving smoothly and
looking ahead reduces fuel consumption.
Avoiding high engine speeds
Only use 1st gear when starting off. Accelerate
briskly from 2nd gear while avoiding high
engine speeds and shifting up prematurely.
When the desired speed is reached, shift into
the highest possible gear and drive at constant
speed at the lowest possible engine speed.
Always remember: driving at low engine speeds
decreases fuel consumption and reduces wear.
Using overrun conditions
When approaching a red light, take your foot off
the accelerator and allow the vehicle to coast in
the highest possible gear.
On a downhill stretch of road, take your foot off
the accelerator and allow the vehicle to coast in
the suitable gear.
The flow of fuel is interrupted in overrun.
Switching off the engine during longer
stops
Switch off the engine during longer stops, e.g.
at traffic lights, railroad crossings or in traffic
jams. You already save fuel from approx. 4 sec-
onds with the engine switched off.
Switching off functions currently not
required
Functions like the air conditioner, seat heating
or the rear-window defroster require a lot of
energy and consume additional fuel. This plays
a major role especially when driving in urban
and in stop-and-go traffic. Therefore, switch off
these functions when they are not really
required.
Having maintenance carried out
Have regular maintenance performed on the
vehicle to achieve optimum the economy and
service life of your vehicle. BMW recommends
having maintenance performed by a BMW
Sports Activity Vehicle Center. Also observe
the BMW maintenance system, refer to
page105.

Reference
At a glance
Controls
Driving tips
Mobility
87
Roof-mounted luggage rack*
A special rack system is available as an optional
accessory for your BMW. Please familiarize
yourself with the information contained in the
installation instructions.
Loading luggage rack
Because roof racks raise the vehicle's center of
gravity when loaded, they have a major effect on
its handling and steering response. You should
therefore always remember not to exceed the
approved roof load capacity, the approved
gross vehicle weight, or the axle loads when
loading the rack.
These specifications can be found under
Weights on page124.
The roof load must be evenly distributed and
must not extend outward beyond the limits of
the loading surface. Always stow the heaviest
pieces on the bottom. Be sure that adequate
clearance is maintained for raising the glass
sunroof and that objects do not project into the
opening path of the liftgate.
Secure roof-mounted cargo correctly and
securely to prevent it from shifting or falling off
while you drive.
Drive smoothly. Avoid sudden acceleration and
braking maneuvers. Take corners gently.
Driving on poor roads
Your X3 is at home on all paved and unpaved
roads. It combines all-wheel drive with the
advantages of a normal passenger car.
Do not drive off-road, as otherwise the
vehicle may be damaged.<
When you are driving on poor roads, there are a
few points which you should strictly observe –
for your own safety and that of your passengers,
as well as to protect the vehicle:
>Familiarize yourself with the vehicle before
you begin driving. Do not take risks with the
vehicle under any circumstances.
>Always adapt your driving speed to the
road conditions. The more steep and uneven the roadway is, the lower the speed
should be.
>You can operate your vehicle on uphill and
downhill gradients with a maximum slope
of 50 %. If you wish to drive on uphill and
downhill grades of this nature, make sure
beforehand that the engine oil and coolant
levels are near the MAX mark, refer to
pages102 and104.
>When descending very steep hills, use
HDC Hill Descent Control, refer to page52.
It is possible to start off on inclines of up
to 32 %.
The permitted side tilt is 32 %.
>While driving, watch carefully for obstacles
such as rocks or holes. Try to avoid these
obstacles whenever possible.
>Avoid having the body make contact with
the ground, e.g. on the crests of hills and
bumpy roads. The ground clearance of the
vehicle is a maximum of approx. 8.0 in/
20 cm. Please be aware that the ground
clearance can vary depending on the load
and operating conditions of the vehicle.
>Do not drive in water that is deeper than
20 in/50 cm. If you must drive through water
up to that depth, drive at a walking speed
and do not stop.
After leaving the water, press on the foot-
brake gently several times while driving at a
low speed. The brake applications will help
to dry the brakes, thus preventing a reduc-
tion in braking performance caused by the
moisture.
To clean the handbrake, apply the lever
slightly at approx. 25 mph/40 km/h and con-
tinue to drive for approx. 200 yards/
200 meters, provided that traffic conditions
allow you to do so.
>Depending on the road condition, it can be
useful to temporarily activate DTC, refer to
DTC Dynamic Traction Control on page52.
>If the drive wheels spin on one side, depress
the accelerator pedal far enough to permit
the driving stability control systems to dis-
tribute the drive torque to the individual
wheels.

Under the hood
102
Engine oil
Engine oil consumption depends on driving
style and operating conditions.
Warning lamp
Engine oil pressure
The warning lamp lights up red:
The engine oil pressure is too low.
Stop the vehicle immediately and
switch off the engine. Check the engine oil level
and top off as needed. If the oil level is correct:
Have the system checked immediately.
Do not continue driving. The engine could
be damaged because of inadequate lubri-
cation.<
Engine oil level
The warning lamp lights up yellow dur-
ing driving. An acoustic signal also
sounds and "+1.0 " is displayed in the
instrument cluster, refer to page102.
The oil level is at its absolute minimum; top off
engine oil as soon as possible. Until then, do not
drive more than approx. 125 miles/200 km.
The warning lamp lights up yellow after
the engine is switched off. In addition, a
signal sounds.
Top off engine oil at the earliest opportunity,
e.g. with your next refueling.
The warning lamp lights up yellow
within 30 seconds after starting the
engine:
The oil level sensor has failed. It is not possible
to take a current or meaningful measurement.
Have the system checked as soon as possible.
Checking oil level
Your vehicle is equipped with an electronic oil
level control.
For the most precise possible display of the oil
level, the engine must be at operating tempera-
ture, i.e. after at least 6.5 miles/10 km of unin-
terrupted driving. You can have the oil level dis-
played while you drive or while the vehicle is standing on a flat surface with the engine run-
ning.
You can have the current oil level displayed in
the instrument cluster.
Press button1. The oil level is checked and dis-
played for approx. 15 seconds.
In order to cancel the display early, press but-
ton 1 again.
Possible displays
1Oil level OK
2Oil level is being detected
This process can last approx. 3 minutes
while standing on a flat surface and approx.
5 minutes while driving.

Reference
At a glance
Controls
Driving tips
Mobility
119
Towing methods
To avoid damage, do not lift the vehicle by
the tow fitting or body and suspension
parts.<
In some countries, towing with tow bars or
ropes on public roads is not permitted. Familiar-
ize yourself with the regulations on towing in the
specific country.
With tow bar
The towing vehicle must not be lighter
than the vehicle to be towed; otherwise,
it will not be possible to safely control vehicle
response.<
The tow fittings used should be on the same
side on both vehicles. Should it prove impossi-
ble to avoid mounting the tow bar at an offset
angle, please observe the following:
>Clearance and maneuvering capability will
be strictly limited in corners.
>When mounted at an angle, the tow bar will
exert lateral forces, tending to push the
vehicle sideways.
Secure the tow bar to the tow fittings
only. Otherwise, other vehicle parts could
be damaged.<
With tow-rope
When starting off in the towing vehicle, make
sure that the tow-rope is taut.
To avoid jerking and the associated
stresses on vehicle components when
towing, always use nylon ropes or nylon straps.
Secure the tow rope to the tow fittings only.
Otherwise, other vehicle parts could be dam-
aged.<
With tow truck
Do not tow the X3 with only the front or
rear axle raised; otherwise, the wheels
could lock and the transfer case could be dam-
aged.<
Have the X3 transported only on a flat bed.
Tow starting
If possible, do not tow start the vehicle; jump
start the engine instead, refer to page117.
Vehicles equipped with catalytic convertors
should only be tow started when the engine is
cold. It is not possible to tow start an engine
equipped with an automatic transmission.
1.Switch on hazard warning flashers, comply
with local regulations.
2.Switch on ignition, refer to page38.
3.Shift into 3rd gear.
4.Have the vehicle tow-started with the clutch
depressed and slowly release the clutch.
After the engine starts, immediately
depress the clutch again.
5.Stop at a suitable location, remove the tow
bar or rope and switch off the hazard warn-
ing flashers.
6.Have the vehicle checked.
Do not activate the HDC Hill Descent
Control during tow starting, refer to
page52.<