2011 BMW 550I XDRIVE GT engine

Fuel tank capacity
Fuel
tank capacity: approx. 18.5 US gal/70 liters.Refuel promptly
Refuel below a range of 30 miles/50 km;
otherwise, engine functions are not ensured and
damage may occur.◀ Seite 241
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Fuel
Fuel quality
Refuel with unleaded fuel only
Do not use leaded fuel as this would per‐
manently damage the catalytic converter.
◀
Do not refuel with ethanol
Do not refuel with E85, i.e., fuel with an
ethanol content of 85 %, or with Flex Fuel, as this
would damage the engine and fuel supply sys‐
tem.◀
Required fuel
Super Premium Gasoline/AKI 91 or AKI
89
BMW recommends AKI 91 or 89.
Gasoline with lower AKI
The minimum AKI Rating is 89.
If you use gasoline with this minimum AKI Rat‐
ing, the engine may produce knocking sounds
when starting at high outside temperatures.
This has no effect on the engine life.
Minimum fuel grade
Do not use any gasoline below the mini‐
mum specified fuel grade; otherwise, engine
damage may occur.◀
Use high-quality brands
Field experience has indicated significant differ‐
ences in fuel quality: volatility, composition, ad‐
ditives, etc., among gasolines offered for sale in
the United States and Canada.
Fuels containing up to and including 10 % etha‐
nol or other oxygenates with up to 2.8 % oxygen
by weight, that is, 15 % MTBE or 3 % methanol
plus an equivalent amount of co-solvent, will not
void the applicable warranties with respect to
defects in materials or workmanship. Minimum fuel grade
The
use of poor-quality fuels may result in
driveability, starting and stalling problems es‐
pecially under certain environmental conditions
such as high ambient temperature and high al‐
titude.
Should you encounter driveability problems
which you suspect could be related to the fuel
you are using, we recommend that you respond
by switching to a recognized high-quality brand
such as gasoline that is advertised as Top Tier
Detergent Gasoline.
Failure to comply with these recommendations
may result in unscheduled maintenance.◀ Seite 242
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Engine compartment
Important features in the engine compartment
1
Vehicle identification number*
2 Jump starting, negative terminal
3 Washer fluid reservoir 4
Jump starting, positive terminal
5 Oil filler neck
6 Coolant reservoir
Hood
Opening the hood Working in the engine compartment
Never attempt to perform any service or
repair operations on your vehicle without the
necessary professional technical training.
If you are unfamiliar with the statutory guide‐
lines, have any work on the vehicle performed
only by a service center.
If this work is not carried out properly, there is
the danger of subsequent damage and related
safety hazards.◀ Never reach into the engine compartment
Never reach into the intermediate spaces
or gaps in the engine compartment. Otherwise,
there is risk of injury, e.g. from rotating or hot
parts.◀
1. Pull the lever. Seite 251
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2.
Press the release handle and open the hood. 3.
Be careful of protruding parts on the hood. Danger of injury when the hood is open
There
is a danger of injury from protruding
parts when the hood is open.◀
Closing the hood Let the hood drop from a height of approx. 16 in/
40 cm and push down on it to lock it fully.
The hood must audibly engage on both sides.
Hood open when driving
If you see any signs that the hood is not
completely

closed while driving, pull over imme‐
diately and close it securely.◀ Danger of pinching
Make sure that the closing path of the
hood is clear; otherwise, injuries may result.◀ Seite 252
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Engine compartment

Engine oil
General information
The
engine oil consumption is dependent on the
driving style and driving conditions.
Therefore, check the engine oil level after every
refueling using the electronic engine oil level
check.
Checking the oil level
The concept
The oil level is monitored electronically and dis‐
played on the Control Display.
Requirements
▷ The engine must be running and warm after
the vehicle has been driven for at least
6 miles/10 km.
▷ The vehicle is stopped or being driven on a
level roadway.
Displaying the oil level
1. "Vehicle Info"
2. "Vehicle status"
3. "Engine oil level" Possible messages
▷
"Engine oil level OK"
▷ "Measurement not possible at this time."
▷ "Measuring engine oil level..."
Duration with the engine running: ap‐
prox. 3 minutes. Duration while driving: approx. 5 minutes.
▷ "Engine oil level below minimum. Add 1
quart!"
Add oil within the next 125 miles/200 km.
▷ "Engine oil level too high! Have this
checked."
Have the vehicle checked immediately.
Too much engine oil
Have the vehicle checked immedi‐
ately; otherwise, surplus oil can lead to en‐
gine damage.

◀ ▷
"Measurement inactive. Have this
checked."
Note the newly calculated remaining mile‐
age until the next oil service. Have the sys‐
tem checked as soon as possible.
Adding engine oil
Filler neck When the indicator lights up in the instrument
cluster, add 1 US quart/liter of engine oil within
the next 125 miles/200 km.
Recommended oil types, refer to page
254.
Protect children
Keep oil, grease, etc., out of reach of chil‐
dren and heed the warnings on the containers
to prevent health risks.◀ Seite 253
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Oil types
Note
No oil additives
Oil
additives may lead to engine damage.◀
Approved oil types
Your service center can advise you on which en‐
gine oils have been approved by the manufac‐
turer of your vehicle.
The engine oil quality is critical for the life of the
engine.
Only use approved BMW High Performance oil.
Approved oils belong to the viscosity grades
SAE 0W-40, SAE 0W-30, SAE 5W-40 and SAE
5W-30.
Alternative oil types
If the approved engine oils are not available, up
to 1 US quart/liter of another oil with the follow‐
ing specification may be used.
API SM quality standards or higher. Coolant
General information
Danger of burns from hot engine
Do not open the cooling system while the
engine is hot; otherwise, escaping coolant may
cause burns.◀ Suitable additives
Only
use suitable additives; otherwise, en‐
gine damage may occur. The additives are
harmful to your health.◀
Coolant consists of water and additives.
Not all commercially available additives are suit‐
able for your vehicle. Ask your service center for
suitable additives.
Coolant level
If there is no Min– and Max– mark in the filler
neck of the coolant reservoir, have the coolant
level checked if necessary by your service cen‐
ter and add coolant as needed.
Checking
1. Let the engine cool.
2. Turn the cap of the coolant reservoir slightly
counterclockwise

to allow any excess pres‐
sure to dissipate, and then open it. 3.
The coolant level is correct if it lies between
the minimum and maximum marks in the
filler neck. 4.
If the coolant is low, slowly add coolant up to
the specified level; do not overfill. Seite 254
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Engine oil

Maintenance
BMW Maintenance System
The maintenance system directs you to re‐
quired
maintenance measures and thereby sup‐
ports you in maintaining road safety and the op‐
erational reliability of the vehicle.
Condition Based Service CBS
Sensors and special algorithms take into ac‐
count the driving conditions of your vehicle.
Based on this, Condition Based Service deter‐
mines the maintenance requirements.
The system makes it possible to adapt the
amount of maintenance you need to your user
profile.
Details on the service requirements, refer to
page 82, can be displayed on the Control Dis‐
play.
Service data in the remote control
Information on the required maintenance is con‐
tinuously stored in the remote control. Your
service center will read out this data and suggest
the right array of service procedures for your ve‐
hicle.
Therefore, hand your service specialist the re‐
mote control that you used most recently.
Storage periods
Storage periods during which the vehicle bat‐
tery was disconnected are not taken into ac‐
count.
If this occurs, have a service center update the
time-dependent maintenance procedures,
such as checking brake fluid and, if necessary,
changing the engine oil and the microfilter/acti‐
vated-charcoal filter. 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 requirements.
Maintenance and repair should be performed by
your service center. Make sure to have regular
maintenance procedures recorded in the vehi‐
cle's Service and Warranty Information Booklet
for US models, and in the Warranty and Service
Guide Booklet for Canadian models. These en‐
tries are proof of regular maintenance.
Socket for OBD Onboard
Diagnosis There is an OBD socket on the driver's side for
checking

the primary components in the vehicle
emissions.
Emissions
▷The warning lamp lights up:
Emissions are deteriorating. Have
the

vehicle checked as soon as pos‐
sible.
▷ The warning lamp flashes under cer‐
tain circumstances: Seite 256
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Maintenance

This indicates that there is excessive
misfiring in the engine.
Reduce the vehicle speed and have
the system checked immediately;
otherwise, serious engine misfiring
within a brief period can seriously
damage emission control compo‐
nents,
in particular the catalytic con‐
verter.
Fuel cap The indicator lamp lights up.
If the fuel cap is not properly tightened,
the

OBD system may conclude that fuel
vapor is escaping. If the cap is then tightened,
the display should go out in a short time.
Data memory
Your vehicle records data relating to vehicle op‐
eration, faults and user settings. These data are
stored in the remote control and can be read out
with suitable devices, particularly when the ve‐
hicle is serviced. The data obtained in this way
provide valuable information for service proc‐
esses and repair or for optimizing and develop‐
ing vehicle functions further.
In addition, if you signed a service contract for
Assist, certain vehicle data can be sent directly
from the vehicle to facilitate the desired serv‐
ices. Seite 257
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