check engine BMW X3 2.5I 2006 E83 User Guide

Refueling
84
Refueling
Fuel cap
Opening
Always switch off the engine before refu-
eling. Otherwise, no fuel can be dis-
pensed into the tank and the Service Engine
Soon lamp lights up.<
1.Open fuel filler door. To do so, briefly press
it at the rear edge.
2.Turn fuel filler cap counterclockwise.
3.Put the fuel filler cap in the bracket attached
to the fuel filler door.
Closing
Replace the cap and turn it clockwise until you
hear a clearly audible click.
Be careful not to crush the cap leash between
the gas cap and the vehicle.
The warning lamp
* lights up.
The fuel cap is not properly closed or is
missing. Check whether the fuel cap is
properly closed.
Manually releasing fuel filler door
In the event of an electrical malfunction in the
system, you can release the fuel filler door man-
ually:
1.Open the cover flap in the cargo area on the
right-hand side panel, refer to page72.
2.Pull the green button. The fuel filler flap is
released.
Always observe all applicable precautions
and regulations when handling fuels.
Never carry spare fuel containers in your vehi-
cle. Whether empty or full, these containers can
leak, cause an explosion, and lead to fire in the
event of a collision.<
Observe the following when refueling
When handling fuels, comply with all
applicable safety precautions posted at
the service station.<
When refueling, insert the filler nozzle com-
pletely into the filler pipe. Avoid lifting the filler
nozzle while filling the tank; otherwise, this can
result in:
>premature pump shutoff
>reduced efficiency in the fuel-vapor recov-
ery system
The fuel tank is full when the filler nozzle clicks
off the first time.
Fuel tank capacity
Approx. 17.7 gallons/67 liters, including the
reserve capacity of approx. 2 gallons/8 liters.

Under the hood
94
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. In addition, an acoustic sig-
nal sounds.
The oil level is at the absolute minimum. Add
engine oil as soon as possible. Until then, do not
drive more than approx. 30 miles/50 km.
The warning lamp lights up yellow after
the engine is switched off. In addition,
an acoustic signal sounds.
Top off engine oil at the earliest opportunity,
e.g. when refueling.
Engine oil sensor
The warning lamp lights up yellow
within 30 seconds after starting the
engine:
The oil level sensor is defective. Have it
checked as soon as possible.
Checking oil level
1.With the engine at operating temperature,
i.e. after at least 6 miles/10 km of uninter-
rupted driving, park the vehicle in a horizon-
tal position.
2.Switch off engine.
3.After approx. 5 minutes, pull the dipstick out
and wipe it off with a clean lint-free cloth,
paper towel, or similar material.4.Carefully push the dipstick all the way into
the guide tube and pull it out again.
The oil should extend to between the two
marks on the dipstick.
5.Push the oil dipstick into the dipstick tube
as far as possible again.
The oil quantity between the two marks of the
dipstick is approx. 1.1 US quarts/1 liter.
Do not fill beyond the upper mark on the
dipstick. Excess oil can damage the
engine.<
Adding engine oil
Do not add oil until the oil level has dropped to
just above the lower marking on the dipstick,
refer to page94.
Add oil within the next 30 miles/50 km;
otherwise, engine damage could result.<
Keep oil, grease, etc. out of reach of chil-
dren and heed warnings on the contain-
ers. Otherwise, you could endanger your
health.<
Oil change
Have the oil changed only by your BMW Sports
Activity Vehicle Center or a workshop that

Reference
At a glance
Controls
Driving tips
Mobility
95
works according to BMW repair procedures
with correspondingly trained personnel.
Approved engine oils
The quality of the engine oil selected has critical
significance for the operation and service life of
an engine. BMW continuously approves spe-
cific oils after confirming their suitability for use
in its vehicles with extensive testing.
Only use approved BMW High Performance
Synthetic Oil.
If you are unable to obtain BMW High Perfor-
mance Synthetic Oil, you can add small
amounts of another synthetic oil in between oil
changes. Only use oils with the API SH specifi-
cation or higher.
Ask your BMW Sports Activity Vehicle
Center for more details concerning BMW
High Performance Synthetic Oil or other
approved synthetic oils.<
You can also call BMW of North America at
1-800-831-1117 or visit website
www.bmwusa.com to obtain this information.
BMW engines are designed to operate
without additives, and their use could
even lead to damage in some cases.<
Viscosity classes
Viscosity is the oil flow rating as defined in
SAE classes.
The selection of the correct SAE class depends
on the climate conditions in the area where you
typically drive your BMW.
Approved oils belong to SAE classes
5W-40 and 5W-30.<
These oils can be used for driving in all ambient
temperatures.
Coolant
Warning lamp
The warning lamp lights up: coolant
level is too low; top off at the next
opportunity.Do not open the cooling system when the
engine is hot. Escaping coolant can cause
burns.<
Coolant consists of water and coolant additive.
Not all commercially available additives are suit-
able for your BMW. Ask your BMW Sports
Activity Vehicle Center for suitable additives.
Only use suitable additives; otherwise,
engine damage may result. The additives
present a health hazard.<
Always observe all applicable environ-
mental laws and regulations when dis-
posing of used coolant additives.<
Checking coolant level
1.The engine must be at ambient tempera-
ture.
2.Turn the cap of the expansion tank counter-
clockwise to allow any accumulated pres-
sure to escape, then continue turning to
open.
3.The coolant level is correct if the upper end
of the red float bar is at least at the same
height as the top edge of the filler neck,
refer to arrow. The bar end may only pro-
trude by a maximum of ιin/2 cm, i.e. up to
the second mark on the float bar, refer also
to drawing beside the filler neck.
4.If the coolant is low, slowly add coolant up to
the specified level – do not overfill.
5.Screw on the cap and tighten snugly.
6.Have the reason for the coolant loss cor-
rected as soon as possible.

Reference
At a glance
Controls
Driving tips
Mobility
97
Maintenance
The BMW maintenance
system
The BMW maintenance system supports the
preservation of the road and operating safety of
your BMW.
Regular maintenance is not only required for
the safety of the vehicle, it also improves the
resale value.
Service Interval Display
The BMW maintenance system takes the driv-
ing conditions of the vehicle into account when
determining service intervals:
From the maintenance standpoint,
62,000 miles/100,000 km accumulated in
short-distance urban driving are not the equiva-
lent of the same distance covered at moderate
speeds in long-distance highway travel.
The BMW maintenance system is divided into
engine oil service and Inspections I and II.
Determining the maintenance intervals accord-
ing to the actual loads on the vehicle covers
practically every kind of operating situation.
However, even those who drive only short dis-
tances, significantly less than 6,200 miles/
10,000 km annually, should have the engine oil
changed at least every 2 years since oil deterio-
rates over time, regardless of use.
Brake fluid is hygroscopic: it absorbs
moisture from the atmosphere over the
course of time. To ensure that the brake system
continues to provide safe and reliable perfor-
mance, remember to have the brake fluid changed at least every two years by a BMW
Sports Activity Vehicle Center, also refer to the
Service and Warranty Information Booklet for
US models or the Warranty and Service Guide
Booklet for Canadian models.<
Service and Warranty Information
Booklet for US models and
Warranty and Service Guide Booklet
for Canadian models
Please consult your Service and Warranty Infor-
mation Booklet for US models and Warranty
and Service Guide Booklet for Canadian models
for additional information on service require-
ments.
BMW recommends that you have service
and repair operations performed at your
BMW Sports Activity Vehicle Center.
Take the time to ensure that these service pro-
cedures are confirmed by entries in your vehi-
cle's Service and Warranty Information Booklet
for US models and Warranty and Service Guide
Booklet for Canadian models. These entries
verify that your vehicle has received the speci-
fied regular maintenance.<
Socket for OBD Onboard
Diagnostics
The chief components that make up the emis-
sions content can be checked by a device that
uses the OBD socket.

Maintenance
98 This socket is located under a cover on the left
side of the driver's footwell, just under the dash-
board.
Emissions values
The warning lamp lights up. Exhaust
values are deteriorating. Have the vehi-
cle checked as soon as possible.
Under certain conditions, the indicator will flash.
This indicates a serious rate of engine misfire.
When this occurs, you should reduce speed
and consult the nearest BMW Sports Activity
Vehicle Center as soon as possible. Severe
engine misfire even for only a short period of
time can seriously damage emission control
components, especially the catalytic converter.
Display of the previously described mal-
function on Canadian models.
When the fuel filler cap is not properly
tightened, the OBD system can detect
the vapor leak and the indicator lamp will light
up. If the filler cap is subsequently tightened,
the indicator lamp should go out within a few
days.<
Event data recorders
Your vehicle may be equipped with one or more
sensing and diagnostic modules or a recording
device capable of recording or transmitting cer-
tain vehicle data or information. In addition, if
you have a Subscription Service Agreement for
the BMW Assist system, certain vehicle infor-
mation may be transmitted or recorded in order
to provide such services.
Care
You can find useful information on caring for
your BMW in the Caring for your vehicle bro-
chure.

Reference
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Controls
Driving tips
Mobility
101
bracket. To do so, loosen the bolt, refer to
arrow, and place the reservoir to one side.
Bear in mind that the windshield washing
system reservoir is heavy. If you do not,
injuries or damage to the vehicle can occur.<
For bulb replacement procedure, refer to
Driver's side.
Halogen high beams
H7 bulb, 55 watts
Always wear gloves and eye protection –
the atmosphere within the bulb is pres-
surized. Failure to observe this precaution can
lead to personal injury should the bulb be dam-
aged.<
For checking and adjusting headlamp
aim, please contact your BMW Sports
Activity Vehicle Center.<
Driver's side
1.Open the clip and remove the lamp cover.
2.Press the bulb holder downward and
remove, refer to Low beams.
3.Pull off the lamp base; plug in a new lamp
base.
4.Place the lamp base with the lower edge
against the bracket and press it in until the
lamp base locks into place.
Make sure that the cover does not fall into
the engine compartment; otherwise, the
vehicle can be damaged or other road users can
be endangered.<
Front passenger side
Before replacing the bulb, remove the reservoir
of the windshield washer system from the
bracket, refer to Halogen low beams on
page100.
For bulb replacement procedure, refer to
Driver's side.
Turn signal, front
21 watt bulb
Access to the turn signal is at the edge of the
lamp unit, refer to arrow.
Make sure that the lamp base does not fall
into the engine compartment; otherwise,
the vehicle can be damaged or other road users
can be endangered.<
1.Turn the lamp base and remove it.
2.Replace the bulb.
3.Insert the lamp base. If it does not snap into
place immediately, turn the lamp base until
it does.
Side-mounted turn signals
5 Watt bulb
1.Use finger pressure against the rear end of
the lamp, refer to arrow, to press it forward
for removal.

Giving and receiving assistance
108
First-aid kit*
Beneath the front passenger's seat.
To open: pull the handle and fold the cover
downward.
To close: fold the cover up.
Some of the articles in the first-aid kit may be
used within a limited time only. Check the expi-
ration dates of the contents regularly and
replace the contents in a timely fashion as
needed.
Jump starting
When your battery is discharged, you can use
two jumper cables to start the engine of your
BMW with power from the battery in another
vehicle. You can also use the same method to
help start another vehicle. Use only jumper
cables with fully-insulated clamp handles.
To avoid the risk of potentially fatal injury,
always avoid all contact with electrical
components while the engine is running. Care-
fully observe the following instructions to avoid
personal injury and/or damage to one or both
vehicles.<
Preparing
1.Check whether the battery of the other
vehicle has a voltage of 12 Volts and
approximately the same capacitance in Ah.
This information can be found on the bat-
tery.
2.Switch off the engine of the vehicle provid-
ing assistance.
3.Switch off any electrical systems and com-
ponents in both vehicles.Ensure that no contact exists between
the bodywork on the two vehicles; other-
wise, there is a danger of short circuits.<
Connecting jumper cables
Connect the jumper cables in the correct
order; failure to do so could generate
sparks and cause injury.<
In your BMW, the so-called jump starting termi-
nal in the engine compartment functions as the
positive battery terminal, also refer to Engine
compartment overview on page93. The sym-
bol + is embossed on the cover.
1.Open the cover of the BMW jump starting
terminal, refer to arrow1.
2.Connect one terminal clamp of the posi-
tive/+ jumper cable to the positive terminal
of the battery or to a jump starting terminal
of the vehicle providing starting assistance.
3.Connect the second terminal clamp of the
positive/+ jumper cable to the positive ter-
minal of the battery or to a jump starting ter-
minal of the vehicle to be started.
Your BMW has a special nut that serves as the
body ground or negative terminal, refer to
arrow2.
4.Connect one terminal clamp of the nega-
tive/– jumper cable to the negative terminal
of the battery or to an engine or body
ground of the vehicle providing assistance.
5.Connect the second terminal clamp of the
negative/– jumper cable to the negative ter-
minal of the battery or to the engine or body
ground of the vehicle to be started.

Reference
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Driving tips
Mobility
109
Starting engine
1.Start the engine of the assisting vehicle and
let it run at a slightly elevated idling speed
for a few minutes.
2.Start the engine on the other vehicle in the
usual way.
If the first start attempt is not successful,
wait a few minutes before another attempt
in order to allow the discharged battery to
recharge.
3.Let the engines run for a few minutes.
4.Disconnect the jumper cables by reversing
the connection sequence.
If need be, have the battery checked and
recharged.
Never use spray fluids to start the
engine.<
Tow starting and towing
Obey all applicable laws and guidelines
for tow starting and towing.<
Do not allow any passengers other than
the driver to ride in a vehicle that is being
towed.<
Using tow fitting
The threaded tow fitting is stored in the
onboard tool kit, refer to page99, and must
always remain in the vehicle. It can be screwed
in at the front or rear of the BMW.
Only use the tow fitting that comes with
the vehicle and screw it in as far as it will
go. Use the tow fitting only for towing on roads.
Avoid lateral loading of the tow fitting, e.g. do
not lift the vehicle by the tow fitting. Otherwise,
the tow fitting and the vehicle can be dam-
aged.<
Access to screw thread
Press out the cover in the front or rear bumper
at the notch at the bottom with a screwdriver.
Being towed
Make sure that the ignition key is in posi-
tion 1; otherwise, the steering lock will
engage, making it impossible to steer the vehi-
cle. There is no power assist with the engine
switched off. It is therefore necessary to exert
increased effort for braking and steering.<
Switch on the hazard warning flashers depend-
ing on the local regulations. If the electrical sys-
tem fails, mark the vehicle to be towed, e.g. with
a sign or warning triangle in the rear window.
Do not exceed a towing speed of
30 mph/50 km/h and a towing distance of
95 miles/150 km; otherwise, the drive train may
be damaged.<
Manual transmission
Gearshift lever in neutral.
Automatic transmission
Selector lever in position N.
Changing selector lever positions, refer to
page38.
Towing methods
In some countries, towing with tow bars or
ropes on public roads is not permitted.
Familiarize yourself with the regulations on tow-
ing in the specific country.

Giving and receiving assistance
110
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.To avoid damage, do not lift the vehicle
from the tow fitting or body and suspen-
sion parts.<
Tow starting
If possible, do not tow start the vehicle; jump
start the engine instead, refer to page108.
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 page36.
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
page49.<

Everything from A to Z
124 Master key18
– with remote control18
Maximum speed, with winter
tires90
Mechanical seats27
Memory, refer to
– Seat and mirror memory29
– Vehicle Memory, Key
Memory32
Microfilter
– air conditioner61
– automatic climate control64
Microphone, refer to Car
phone preparation69
Microphone for telephone69
Mirrors30
– automatic curb monitor31
– mirror heating31
– mirror memory, refer to Seat
and mirror memory29
Mobile communications
devices in vehicle77
Mobile phone, refer to
separate Owner's Manual
Monitoring tire pressure, refer
to Flat Tire Monitor50
Monitoring tire pressure, refer
to Tire Pressure Monitor52
Multi-function steering wheel,
refer to Buttons on steering
wheel13
Multifunction switch
– turn signals/headlamp
flasher39
– washer/wiper system40
N
Navigation system, refer to
separate Owner's Manual
Neck support, refer to Head
restraints28
Nets68
Nonsmoker's equipment
package68,69
Nozzles, refer to
Ventilation61,64
Nylon rope, refer to Tow
starting and towing109
O
OBD socket97
Octane rating, refer to Fuel
quality85
Odometer43
Oil
– additives, refer to Approved
engine oils95
– approved engine oils95
– capacity116
– consumption, refer to
Checking engine oil level94
– dipstick94
– level94
– refilling, refer to Adding
engine oil94
Oil change interval, refer to
Service Interval Display44
Oil grades95
Oil level94
– warning lamp94
Oil pressure94
– warning lamp94
Oil sensor94
– warning lamp94
OILSERVICE44
Old batteries, refer to
Disposal106
Onboard Diagnostics OBD
interface socket97
On-board monitor, refer to
separate Owner's Manual
Onboard tool kit99
Opening and closing
– from inside20
– from outside19
– using the door lock20
– using the remote control19
Output, refer to Engine
data114
Outside air
– air conditioner60
– automatic climate control63
Outside temperature display
– changing unit of measure45
– on computer45
Overheating of engine, refer to
Coolant thermometer44
P
Panic mode19
Panorama glass sunroof23
– automatic opening and
closing23
– closing with electrical
malfunction24
– comfort operation20
– comfort position23
– initializing23
– power failure23
– remote control19
Parcel shelf, refer to Cargo
area cover71
Park Distance Control PDC47
Parking aid, refer to PDC Park
Distance Control47
Parking assistant, refer to
PDC Park Distance
Control47
Parking brake, refer to
Handbrake37
Parking lamps56
Parking lamps/low beams56
Partition net72
Parts and accessories, refer to
For your own safety6
Passenger airbags, status54
Passenger-side mirror tilt
function31
Pathway lighting56
PDC Park Distance Control47
Pinch protection
system22,23
– panorama glass sunroof23
– power windows22
Plastic, refer to Caring for your
vehicle brochure
Pollen, refer to
– Microfilter61
– Microfilter/activated
charcoal filter64
Power failure
– battery106
– panorama glass sunroof23
– windows22
Power seat adjustment27