2010 BMW 3 SERIES check engine

Maintenance
224
Socket for Onboard
Diagnosis OBD
On the driver's side is an OBD socket for check-
ing components relevant to the composition of
the vehicle's emissions.
Emissions
The warning lamp lights up:
The vehicle is producing higher emis-
sions. The trip can be continued. Have
the car checked as soon as possible.
Canadian models display this warning
lamp.
The lamp flashes under certain conditions. This
indicates excessive misfiring in the engine. If
this happens, you should reduce your speed
and visit your nearest BMW center as soon as
possible. Severe engine misfiring can quickly
lead to serious damage of emissions-related
components, especially the catalytic converter.
The warning lamp comes on if the gas
cap is not properly tightened and the
OBD system assumes that fuel vapor
is escaping. Make sure that the gas cap is cor-
rectly positioned and close it until it audibly
clicks.
Data recorders
Your vehicle may be equipped with one or sev-
eral measuring or diagnostic modules or a
device for recording or sending certain vehicle
data or information. In addition, if you have
signed a service contract for BMW Assist, cer-
tain vehicle data may be transmitted or
recorded in order to facilitate the corresponding
services.

Mobility
225Reference
At a glance
Controls
Driving tips
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Navigation
Entertainment
Care
Care products
Regular cleaning and care contributes signifi-
cantly to the value retention of your BMW.
BMW recommends cleaning and caring for your
vehicle with products that are approved by
BMW for this purpose.
Your BMW center will be happy to advise you on
the products and services available for cleaning
and caring for your BMW.
Original BMW Care Products have been
material tested, laboratory checked and
proven in the field, and offer optimal care and
protection for your vehicle.<
Do not use cleaners that contain alcohol
or solvents as these may result in dam-
age.<
Cleaning agents can contain substances
that are dangerous or hazardous to your
health. Therefore, follow the warning and safety
instructions on the packaging. When cleaning
inside the vehicle, always open the doors or
windows of the vehicle. In enclosed areas, pro-
vide for sufficient ventilation. Only use products
designed for cleaning vehicles.<
Exterior care
Washing the vehicle
Especially during the winter months,
ensure that the vehicle is washed more
frequently. Heavy soiling and road salt can lead
to vehicle damage.<
After washing the vehicle, apply the
brakes briefly to dry them; otherwise,
water can reduce braking efficiency over the
short term and the brake discs can corrode.<
Automatic car washes
Preference should be given to cloth car washes.
Before driving into a car wash, ensure that it is
suitable for your BMW. Check the following:>Dimensions of your vehicle, refer to
page245.
>If necessary: fold in the exterior mirrors,
refer to page47.
>Maximum permissible tire width.
Avoid car washes with guide rail heights
over 4 in/10 cm; otherwise, there is the
danger of damaging chassis parts.<
Preparations before driving into an automatic
car wash:
>Unscrew the rod antenna
*.
>Deactivate the rain sensor
* to prevent unin-
tentional wiping.
>Sports Wagon: deactivate the rear window
wiper and protect it against damage. If nec-
essary, ask the operator of the car wash
about protective measures you should take.
>Remove additional add-on parts, e.g. spoil-
ers or phone antennas, if they could be
damaged.
Automatic transmission
Before driving into an automatic car wash, per-
form the following steps to ensure that the vehi-
cle can roll:
1.Insert the remote control into the ignition
lock, even with Comfort Access.
2.Move the selector lever to position N.
3.Release the parking brake.
4.Switch off the engine.
5.Leave the remote control in the ignition lock
so that the vehicle can roll.
Steam jets/high-pressure washers
When using steam jets or high-pressure
washers, ensure that you maintain suffi-
cient clearance to the vehicle and do not exceed
a temperature of 1407/606.
Insufficient clearance or excessive pressure or
temperature can lead to component damage or

Mobility
231Reference
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Replacing the corner-illuminating
lamp*
H3 bulb, 55 watts
1.Switch off the lamps and take the remote
control out of the ignition lock.
2.Remove the upper cover from the head-
lamp. To do so, pull the rubber seal up and
off and unscrew the cover using the screw-
driver from the onboard vehicle tool kit, see
arrow.
3.Release the wire bracket from the anchor,
see arrow, and fold it up.
4.Disconnect the plug, change the bulb and
reconnect the plug.
5.Insert the bulb.
6.Fold the wire bracket down and engage it.
7.Reattach the cover.
Be careful when installing the cover; oth-
erwise, leaks could occur and cause dam-
age to the headlamp system.<
Halogen lamps
H7 bulb, 55 watts
Always wear gloves and eye protection;
the atmosphere within the H7 bulb is pressurized. Otherwise, there is a risk of injury if
the bulb is damaged.<
There are separate headlamp covers for low-
beam headlamps and high-beam headlamps.
Be careful when installing the covers; oth-
erwise, leaks could occur and cause dam-
age to the headlamp system.<
For checking and adjusting headlamp
aim, please contact your BMW center.<
Access to the lamps
The high-beam headlamp can be accessed
from the engine compartment, whereas the
low-beam headlamp is accessed through a flap
in the wheel well.
1Cover for high-beam headlamp
2Cover for low-beam headlamp
3Turn signal bulb socket
To remove the covers:
1.Fold the respective wire bracket to the side,
see arrows.
2.Flip open the cover and take it out of the
guide.
Follow the same steps in reverse order to reat-
tach the covers.
Access through the wheel well
Only for low-beam headlamps and turn signals:

Giving and receiving assistance
238 ularly and replace any items in good time, if nec-
essary.
Sedan
The first aid pouch is located on the right-hand
side of the cargo area in a storage area.
Sports Wagon
The first aid pouch is located in the cargo area
behind the left-hand trim panel.
Warning triangle*
Sedan
The warning triangle is located in a holder in the
trunk lid. Press the tabs to take it out.
Sports Wagon
The warning triangle is located behind the left-
hand trim panel in the cargo area. Press the tab
to take it out.
Jump-starting
If the car's own battery is flat, your BMW's
engine can be started by connecting two
jumper cables to another vehicle's battery. You
can also use the same method to help start
another vehicle. Only use jumper cables with
fully-insulated clamp handles.
Do not touch any electrically live parts
when the engine is running, or a fatal acci-
dent may occur. Carefully adhere to the follow-
ing sequence, both to prevent damage to one or
both vehicles, and to guard against possible
personal injuries.<
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 consumers in both vehicles.
There must not be any contact between
the bodies of the two vehicles; otherwise,
there is a danger of shorting.<

Mobility
239Reference
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Connecting jumper cables
Connect the jumper cables in the correct
order, so that no sparks which could
cause injury occur.<
Your BMW has a jump-starting connection in
the engine compartment which acts as the bat-
tery's positive terminal, refer also to the Engine
compartment overview on page219. The cap is
marked with +.
1.Pull the cap of the BMW jump-starting con-
nection up to remove.
2.Attach one terminal clamp of the plus/+
jumper cable to the positive terminal of the
battery or a starting-aid terminal of the vehi-
cle providing assistance.
3.Attach the second terminal clamp of the
plus/+ jumper cable to the positive terminal
of the battery or a starting-aid terminal of
the vehicle to be started.
4.Attach one terminal clamp of the minus/–
jumper cable 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 terminal clamp of the
minus/– jumper cable to the negative termi-nal of the battery or to the engine or body
ground of the vehicle to be started.
Starting the engine
1.Start the engine of the donor vehicle and
allow it to run for a few minutes at slightly
increased idle 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 above connecting sequence.
If necessary, have the battery checked and
recharged.
Never use spray fluids to start the
engine.<
Tow-starting, towing away
Observe the applicable laws and regula-
tions for tow-starting and towing vehi-
cles.<
Do not transport any passengers other
than the driver in a vehicle that is being
towed.<
Using a tow fitting
The screw-in tow fitting must always be carried
in the car. It can be screwed in at the front or
rear of the BMW.
Sedan: it is stored in the onboard vehicle tool kit
underneath the cover on the right-hand side of
the cargo area, refer to page229.
Sports Wagon: it is stored in the onboard vehi-
cle tool kit underneath the cover on the left-
hand side of the cargo area, refer to page229.
Use only the tow fitting provided with the
vehicle and screw it all the way in. Use the
tow fitting for towing on paved roads only. Avoid
lateral loading of the tow fitting, e.g. do not lift

Mobility
241Reference
At a glance
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With a tow truck: vehicle without xDrive
Have the BMW transported with a tow truck
with a so-called lift bar, or on a flatbed.
Do not tow the vehicle with just the rear axle
raised as this may cause the steering to turn.
With a tow truck: vehicle with xDrive
Do not tow a BMW with xDrive with just
the front or rear axle raised; otherwise, the
wheels could lock up and the transfer case
could be damaged.<
Have the BMW transported on a flatbed surface
only.
Tow-starting
Avoid tow-starting the vehicle whenever possi-
ble; instead, jump-start the engine, refer to
page238. Vehicles with a catalytic converter
should only be tow-started when the engine is
cold, vehicles with an automatic transmission
cannot be tow-started at all.
1.Switch on hazard warning flashers, comply
with local regulations.
2.Switch on the ignition, refer to page54.
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 completely 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.
With xDrive: do not activate Hill Descent
Control HDC when the vehicle is being
tow-started, page83.<

Everything from A - Z
256 Care225
– automatic car washes225
– care products225
– carpets227
– CD/DVD drives228
– chrome parts226
– displays227
– exterior225
– fine wood parts227
– headlamps226
– high-pressure washer225
– interior227
– leather227
– light-alloy wheels226
– paintwork226
– plastic parts227
– rubber seals226
– safety belts227
– sensors and cameras227
– upholstery and cloth
trim227
– washing the car
manually226
– windows226
Cargo, securing120
Cargo area110
– capacity247
– Comfort Access35
– folding up the floor
panel112
– lamp, refer to Interior
lamps96
– opening from inside30
– opening from outside31
– partition net111
– roller cover110
Cargo area lid, refer to Trunk
lid/tailgate30
Cargo area net, refer to
Partition net111
Cargo loading119
– securing cargo120
– stowing cargo119
– vehicle119
Car jack
– jacking points235
Car key, refer to Integrated
key/remote control26Car phone
– installation location, refer to
Center armrest106
– refer to separate Owner's
Manual
Car phone, refer to
Telephone174
Car radio, refer to Radio147
Car shampoo
227
Catalytic converter, refer to
Hot exhaust system117
CD, audio playback155
CD changer155,159
– controls144
– fast forward/reverse157
– filling or emptying the
magazine160
– random play sequence156
– selecting a track155
– switching on/off144
– tone control144
– volume144
CD player155
– controls144
– fast forward/reverse157
– random play sequence156
– selecting a track155
– switching on/off144
– tone control144
– volume144
Center armrest106
Center brake lamp
– replacing bulb235
Center console, refer to
Around the center
console14
Central locking
– from inside30
– from outside27
Central locking system27
– Comfort Access34
– hotel function31
– setting unlocking
characteristics27
Changes, technical, refer to
For your own safety5
Changing bulbs, refer to
Lamps and bulbs229Changing the language on the
Control Display79
Changing the measurement
units on the Control
Display73
Changing wheels235
Chassis number, refer to
Engine compartment219
Check Control77
Check Gas Cap196
Child restraint fixing system
LATCH51
Child restraint systems50
Child safety locks53
Child seats, refer to
Transporting children
safely50
Chrome parts227
Chrome polish227
Cigarette lighter, refer to
Lighter108
Cleaning headlamps60
– washer fluid60
Cleaning your BMW, refer to
Care225
Clock69
– 12h/24h mode76
– setting the time and date76
– setting time75
Closing
– from inside30
– from outside27
Clothes hooks107
Cockpit10
Cold start, refer to Starting the
engine55
Combined instrument, refer to
Instrument cluster12
Comfort Access34
– replacing the battery35
Comfort access, refer to
Comfort Access34
Comfort area, refer to Around
the center console14
Compartment for remote
control, refer to Ignition
lock54
Compass104

Reference 257
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Computer71
– displays on Control
Display71
Computer, refer to iDrive16
Concierge service189
Condensation, refer to When
the vehicle is parked119
Condition Based Service
CBS223
Configuring settings, refer to
Personal Profile26
Confirmation signals for
locking/unlocking the
vehicle28
Congestion
– refer to Route, bypassing
sections135
Connecting vacuum cleaner,
refer to Connecting
electrical appliances108
Consumption, refer to
Average consumption71
Consumption display
– average consumption71
– Energy Control70
Contacts
– creating186
Control Center, refer to
iDrive16
Control Display, refer to
iDrive16
– adjusting brightness80
– switching on/off19
Controller, refer to iDrive16
Controls and displays10
Control unit, refer to iDrive16
Convenient operation
– glass roof28
– windows28
Coolant222
– checking level222
Coolant temperature70
Cooling, maximum98
Cooling fluid, refer to
Coolant222
Cooling system, refer to
Coolant222
Copyright2Corner-illuminating lamps
– replacing bulbs231
Corner-illuminating lamps,
refer to Adaptive light
control93
Cornering lamps, refer to
Adaptive light control93
Correct tires216
Country codes DVD157
Courtesy lamps, refer to
Interior lamps96
Criteria for route134
Cross-hairs in navigation130
Cruise control61
– active62
– malfunction62
Cruising range71
Cupholders107
Curb weight, refer to
Weights247
Current fuel consumption,
refer to Energy Control70
Current playback
– external devices169
– of music collection164
Customer Relations191
D
Dashboard, refer to
Cockpit10
Dashboard, refer to
Instrument cluster12
Dashboard lighting, refer to
Instrument lighting95
Data, technical244
– capacities248
– dimensions245
– engine244
– weights247
Data transfer192
Date
– date format77
– setting76
Daytime running lights93
– replacing bulbs230
DBC Dynamic Brake
Control82Deactivating front passenger
airbags90
Deadlocking, refer to
Locking28
Defect
– door lock29
– fuel filler flap196
– glass roof37
– panorama glass roof39
Destination, entering by town/
city name125
Destination address
– entering125,131
Destination entry via BMW
Assist129
Destination for navigation
– entering by voice131
– entering via map130
– entry125
– home address128
– manual entry125
Destination guidance134
– bypassing a route
section135
– changing specified
route134
– continuing134
– starting134
– voice instructions135
– volume of voice
instructions136
Diesel exhaust fluid199
Diesel fuel197
Diesel particulate filter117
Digital clock69
Digital compass104
Digital radio, refer to HD
Radio148
Dimensions245
Dipstick, engine oil219
Directional indicators, refer to
Turn signals58
Direction instructions, refer to
Voice instructions135
Directory for navigation, refer
to Address book127
Displacement, refer to Engine
data244