2006 BMW 525XI check engine light

Maintenance
202
Socket for OBD Onboard
Diagnostics interface
Components which are decisive for the
exhaust-gas composition can be checked via
the OBD socket with a device.
This socket is located to the left on the driver's
side, on the underside of the instrument panel
under a cover.
Exhaust-gas values
The warning lamp lights up. The
exhaust-gas values worsen. Have the
vehicle checked as soon as possible.
Display of the previously described
malfunction in Canadian models.
The lamp flashes under certain conditions. This
is a sign of excessive misfiring of the engine. In
this case you should reduce speed and drive to
the nearest BMW center as soon as possible.
Heavy engine misfiring led to serious damage
to the emission-relevant components, espe-
cially the catalytic converter, within a short time.
If the fuel filler cap is not properly tight-
ened, the OBD system can close when
fuel vapor escapes. Then a display light up. If
the cap is then tightened, the display will go out
within a few days.<
Event Data Recorders
Your vehicle may be equipped with one or sev-
eral measuring and diagnosis modules, or with
a device for recording or transmitting certain
vehicle data or information. If you have also
signed a contract of participation for BMW
Assist, certain vehicle data can be transmitted
or recorded to enable corresponding services.
Care
Important information on the care and mainte-
nance of your BMW is contained in the Caring
for your vehicle brochure.

Replacing components
204 damage when replacing bulbs, observe any
instructions provided by the bulb manufac-
turer.<
For care and maintenance of the headlamps,
please follow the instructions in the separate
Caring for your vehicle brochure.
For checking and adjusting headlamp
aim, please contact your BMW center.<
Halogen headlamps
The illustration shows the left-hand side of the
engine compartment.
1Cover cap for low beams
2Cover cap for high beams
Turn the cover cap to the left and remove.
Always wear gloves and eye protection –
the atmosphere within the H7 bulb is
pressurized. Failure to observe this precaution
can lead to personal injury should the bulb be
damaged.<
Low beams
H7 bulb, 55 watts
1.Turn the bulb holder to the left and remove.
2.Remove and replace the bulb.
High beams
H7 bulb, 55 watts
1.Turn the bulb holder to the left and remove.
2.Remove and replace the bulb.
Parking and roadside parking lamps
Bulb 5 watts, W 5 W
1.Turn the cover cap for low beams or high
beams to the left and remove.
2.Pull out the bulb holder.
3.Remove and replace the bulb.
Xenon lamps*
The service life of these bulbs is very long and
the probability of a failure is very low, provided
that they are not switched on and off an unusual
number of times.In the unlikely event that one of
these lamps should fail, you can respond by
switching on your fog lamps and proceeding
carefully in accordance with the reduced visibil-
ity, where allowed by law.
Have work on the Xenon lighting system
performed only by your BMW center or a
workshop that works according to BMW repair
procedures with correspondingly trained per-
sonnel. Due to the high voltage present in the

Mobility
209Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
When you mount wheels other than Genu-
ine BMW light-alloy wheels, different lug
bolts may also be required.
4.Screw in the remaining lug bolts. Tighten all
the bolts securely in a diagonal pattern.
5.Lower the vehicle and remove the jack from
beneath the vehicle.
After mounting
1.Tighten the lug bolts in a diagonal pattern.
To ensure safety, always have the
lug bolts checked with a calibrated
torque wrench as soon as possible to
ensure that they are tightened to the speci-
fied torque. The tightening torque is
88.5 lb ft/120 Nm.<
2.When stowing the wheel and tools in the
vehicle, execute these steps in the reverse
order.
3.Check and correct the tire inflation pressure
at the earliest opportunity.
Protect valve stems and valve stem
seal caps against dirt and contamina-
tion. Dirt in valve stems is a frequent source
of gradual air loss.<
4.Initialize the Flat Tire Monitor, refer to
page88.
5.Replace the damaged tire as soon as possi-
ble and have the new wheel/tire balanced.
Driving with compact wheel
Drive reservedly and do not exceed a speed of
50 mph/80 km/h.
The driving characteristics change, for example
reduced track stability on braking, extended
braking distance, and altered self-steering
characteristics in the limit range. In conjunction
with winter tires, these characteristics are more
pronounced.
Only one compact wheel may be
mounted. You should re-equip with
wheels and tires of the original size as quickly as
possible.<
Vehicle battery
Battery care
The battery is 100 % maintenance-free, i.e., the
electrolyte will last for the life of the battery
when the vehicle is operated in a temperate cli-
mate. Your BMW center will be glad to advise in
all matters concerning the battery.
Charging battery
Only charge the battery in the vehicle via the
terminals in the engine compartment with the
engine off. Connections, refer to Jump starting
on page212.
Disposal
Have old batteries disposed of by your
BMW center or hand them in to a recy-
cling center. Maintain the battery in an upright
position for transport and storage. Always
restrain the battery to prevent it from tipping
over during transport.<
Power failure
After a temporary power loss, the functioning of
some equipment may be limited and require
reinitialization. Individual settings are also lost
and must be updated:
>Seat, mirror and steering wheel memory
The positions must be stored again, refer to
page45.
>Time and Date
The values must be updated, refer to
page80.
>Radio
Stations must be stored again if necessary,
refer to page150.
>Navigation system
Wait until the system starts, refer to
page141.

Mobility
213Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Preparation
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 assisting vehi-
cle.
3.Switch off any electrical accessories in both
vehicles.
There must not be any contact between
the bodies of the two vehicles, otherwise
there is a danger of shorting.<
Connecting jumper cables
To avoid personal injury from sparks,
always observe this sequence when con-
necting jumper cables.<
On your BMW the so-called starting-aid termi-
nal in the engine compartment acts as the bat-
tery positive terminal, also refer to the engine
compartment overview on page197. The cover
cap is marked with +.
1.Fold open the cover of the BMW starting-
aid terminal. To do so, pull the tab.
2.Attach one end of the jumper cable plus/+ to
the positive terminal of the battery or a
starting-aid terminal of the vehicle provid-
ing assistance.
3.Attach the second end of the cable to the
positive terminal of the battery or to a start-
ing-aid terminal of the vehicle to be started.
4.Attach one end of the jumper cable minus/–
to the negative terminal of the battery or to
an engine or body ground of the assisting
vehicle.Your BMW has a special nut as body ground
or negative pole.
5.Attach the second end of the cable to the
negative terminal of the battery or to the
engine or body ground of the vehicle to be
started.Starting engine
1.Start the engine on the assisting vehicle
and allow it to run at idle for several minutes
at slightly increased speed.
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.
Check the battery and recharge if necessary.
Never use spray fluids to start the
engine.<
Tow-starting and towing
Observe applicable laws and regulations
for tow-starting and towing.<
Do not transport any passengers other
than the driver in a vehicle that is being
towed.<
Using tow fitting
The screw-on tow-fitting must always be car-
ried in the vehicle. It can be screwed in at the
front or rear of the BMW.

227Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Everything from A to Z
Index
"..." Identifies Control Display
texts used to select
individual functions, and
indicates where to find them
in the text.
A
ABS Antilock Brake
System84
ACC, refer to Active cruise
control65
Acceleration assistant for
SMG Sequential Manual
Gearbox61
Accessories6
Acoustic signal, refer to Check
Control77
Activated-charcoal filter102
"Activation time" for parked
car ventilation102
Active cruise control65
– indicator lamp68
– radar sensor69
– selecting distance67
– warning lamps69
Active head restraints,
front47
Active seat49
Active seat ventilation49
Active steering89
– warning lamp89
Adapter for spare key28
Adaptive brake lamps, refer to
Brake force display89
Adaptive Head Light95
"Add digits" for mobile
phone172
"Address book" for
navigation132Address for navigation
– deleting133
– entering125,128
– selecting133
– storing132
– storing current position133
"Add to address book"132
"Add to destination
list"128,129
Adjusting active backrest
width45
Adjusting confirmation signals
for locking and unlocking31
Adjusting the thigh support44
Adjusting the tone during
audio operation, refer to
Tone control145
Adjustment in audio mode
– front-to-rear146
– right/left balance146
"After door opened"46
"After unlocking"46
Airbags90
– sitting safely43
– warning lamp91
Air circulation, refer to Air
recirculation101
Air distribution
– automatic99
– manual100
Airing, refer to Ventilation101
Air recirculation
– AUC Automatic recircu-
lated-air control101
– recirculated-air mode101
"Air recirculation on / off"51
Air vent outlets of automatic
climate control98
Air vents98
– refer to Ventilation101
Air volume100
AKI, refer to Fuel quality187Alarm system36
– avoiding unintentional
alarms37
– interior motion sensor37
– switching off the alarm37
– switching off the tilt alarm
sensor and interior motion
sensor37
– tilt alarm sensor37
All around the center
console14
All around the steering
wheel10
"All channels"154
"All doors"30
All-season tires, refer to
Winter tires195
"All stations" calling up with
radio148,151
All-wheel drive, refer to
xDrive85
Alterations, technical, refer to
For your own safety5
Altering stretch of road140
"AM", reception
range144,148
Antenna for mobile phone166
Antifreeze
– coolant199
– washer fluid64
Antilock Brake System
ABS84
Anti-theft alarm system, refer
to Alarm system36
Anti-theft system, refer to
Central locking system29
Anti-trapping mechanism
– glass sunroof, electric41
– panorama glass sunroof42
– power windows39
Approved axle loads, refer to
Weights221
Approved engine oils
198

Everything from A to Z
230 CBS Condition Based
Service201
"CD"144,157
CD changer157
– controls144
– fast forward/reverse161
– installation location161
– playing a track159
– random order160
– repeating a track160
– selecting a CD157
– selecting a track158
– switching on/off144
– tone control145
– volume145
CD player157
– controls144
– fast forward/reverse161
– playing a track159
– random order160
– repeating a track160
– selecting a track158
– switching on/off144
– tone control145
– volume145
Center armrest
– front106
– rear109
Center brake lamp206
Center console14
"Central locking"30
Central locking system29
– comfort access37
– from inside vehicle32
Changes, technical
– refer to For your own
safety5
– refer to Parts and
accessories6
Changing settings on Control
Display80
Changing the language on the
Control Display82
Changing units of measure on
Control Display81
Changing wheels194,207
CHECK button78
Check Control77"Check Control
messages"78
Check Gas Cap187
Checking the air pressure,
refer to Tire inflation
pressure188
Child-restraint fixing system
LATCH
54
Child restraints52
Child-restraint systems52
Child-safety lock55
Child seats52
Chime, refer to Check
Control77
Chock207
Chrome parts, care, refer to
Caring for your vehicle
brochure
Cigarette lighter108
Cleaning, refer to Caring for
your vehicle brochure
"Climate"48,99
Clock72
– 12h/24h mode81
– setting time and date80
Closing
– from inside32
– from outside30
Closing fuel filler cap187
Clothes hooks107
Cockpit10
Cold start, refer to Starting
engine57
"Comfort", active backrest
width adjustment45
Comfort access37
– observe in car wash39
– replacing battery39
Comfort area, refer to All
about the center console14
Comfort operation
– windows with comfort
access38
– with comfort access38
Comfort seat44
"Communication"170,181
"Communication
settings"180Compact Disc
– refer to CD changer157
– refer to CD player157
Compact wheel
– inflation pressure189
– wheel change208
Compartment for remote
control, refer to Ignition
lock56
Compartments, refer to
Storage compartments107
Compressed audio files157
Computer73
– displays on Control
Display74
– hour signal81
"Concert hall", refer to Tone
control146
Condition Based Service
CBS201
"Confirmation"
31
Connecting car vacuum
cleaner, refer to Connecting
electrical devices108
Consumption, refer to
Average consumption73
Consumption indicator,
Energy Control73
Consumption statistics, refer
to Average fuel
consumption73
"Continue guidance to
destination?"137
Control Center, refer to
iDrive16
Control Display, refer to
iDrive16
– setting brightness81
Controller, refer to iDrive16
Controls, refer to Cockpit10
Convenience operation
– glass sunroof30
– windows30
Convenience start, refer to
Starting engine57
Coolant199
– checking level199
– temperature72
Cooling, maximum100

Reference 233
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
ESP Electronic Stability
Program, refer to DSC
Dynamic Stability
Control84
Event Data Recorders202
Exhaust system, refer to Hot
exhaust system116
Exterior mirrors49
– automatic dimming
feature117
– automatic heating49
– folding in and out49
– tilting down passenger-side
exterior mirror50
Eye for tow-starting and
towing, refer to Tow
fitting213
F
"Fader", refer to Tone
control146
Fader, refer to Tone
control146
Failure messages, refer to
Check Control77
False alarm, refer to Avoiding
unintentional alarms37
Fastening safety belts, refer to
Safety belts47
– warning lamp47
Fastest route for
navigation134
"Fast route" for
navigation135
"Favorites" calling up with
radio151
First aid, refer to First-aid
kit212
First-aid kit212
Flashing during locking/
unlocking, refer to Setting
confirmation signals31
Flashlight, refer to
Rechargeable flashlight106Flat tire
– changing wheels207
– compact wheel208
– Flat Tire Monitor87,88
– run-flat tires88,194
Flat Tire Monitor87
– false alarms88
– initializing system88
– limits of system88
– show chains195
– warning lamp88
Flat tires, refer to Tire
condition193
"FM", reception
range144,148
FM, waveband148
Fog lamps97
– indicator lamp13,97
Folding rear seat
back109,111
Footbrake, refer to Braking
safely117
Footwell lamps97
For specified oil grades, refer
to Approved engine oils198
Forward, fast
– CD changer161
– CD player161
For your own safety5
4-wheel drive system, refer to
xDrive85
Freeway, refer to Route
criteria135
Front airbags90
Front armrest, refer to Center
armrest, front106
Front passenger airbags,
deactivating90
Front seat adjustment44
"FTM"88
FTM, refer to Flat Tire
Monitor87
Fuel187
– capacity222
– display73
– high-quality brands187
– quality187
– specifications187Fuel clock, refer to Fuel
gauge73
Fuel consumption display,
computer, average fuel
consumption73
Fuel display, refer to Fuel
gauge73
Fuel filler door186
– releasing in the event of
electrical malfunction186
Fuses210
G
Garage door opener, refer to
Integrated universal remote
control104
Gasoline, refer to Required
fuel187
Gasoline display, refer to Fuel
gauge73
Gear changes
– automatic transmission with
Steptronic61
– SMG Sequential Manual
Gearbox60
Gear display
– automatic transmission with
Steptronic61
– SMG Sequential Manual
Gearbox59
Gearshift lever, manual
transmission58
Gearshift lever positions,
manual transmission58
General driving notes116
Glass sunroof, electric40
– auto-remote operation from
outside32
– comfort operation with
comfort access38
– moving manually41
– remote control30
Glove compartment105
– lighting105
– rechargeable flashlight106
GPS navigation, refer to
Navigation system124