2006 BMW 550I SEDAN check engine

At a glance
13Reference
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Indicator and warning lamps
The concept
Indicator and warning lamps can light up both in
the display area1 and in the display2 in various
combinations and colors.
Some lights are tested for proper function by
briefly lighting up during starting of the engine
or when the ignition is switched on.
Explanatory text messages
Text message at the bottom edge of the Con-
trol Display explain the meaning of the dis-
played indicator and warning lamps.
Additional information, e.g. on the cause of a
malfunction and on the corresponding need to
take action can be displayed via the Check Con-
trol, refer to page79.In the case of corresponding urgency, this infor-
mation is displayed immediately when the
related lamp lights up.
Indicator lamps without text messages
The following indicator lamps in the display
area1 indicate that the associated functions
are activated:
Handbrake engaged60
Handbrake engaged for Canadian
models
Fog lamps
*104
DTC Dynamic Traction Control87
High beams/headlamp flasher102
Lamp flashes:
DSC or DTC controls the drive and
braking forces for maintaining vehicle
stability87

Controls
39Reference
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Mobility
>Sports Wagon: opening rear window sepa-
rately
>Starting engine
Functional requirement
>The vehicle or the luggage compartment
lid/tailgate can only be locked if the vehicle
detects that the remote control you are car-
rying is outside the vehicle.
>The next unlocking and locking cycle is not
possible until after approx. 2 seconds.
>The engine can only be started if the vehicle
detects that the remote control is located in
the vehicle.
Comparison with ordinary remote
control
You can control the functions mentioned previ-
ously with the comfort access or by pressing
the buttons on the remote control. Therefore,
please familiarize yourself with the information
on opening and closing beginning on page28
beforehand.
The special features when using comfort
access are described in the following.
Should a short delay occur when opening
or closing the windows or the glass sun-
roof, the system is checking whether a remote
control is located in the vehicle. Please repeat
opening or closing if necessary.<
Releasing
Completely grasp a door handle, arrow1. This
corresponds to pressing the button.
If a remote control is detected in the interior
after unlocking, the electric steering-wheel lock
unlocks, refer to page58.
Locking
>For the driver's door, touch the area high-
lighted in the picture, arrow2, with your fin-
ger for approx. 1 second.
>For the remaining doors, touch the area
highlighted in the picture, arrow3, with your
finger for approx. 1 second.
This corresponds to pressing the but-
ton.
Please make sure that the ignition and all
current consumers are switched off
before locking to save the battery.<
Comfort locking
Hold a finger or the back of the hand on the sur-
face, arrow2 or 3.
The windows and the glass sunroof
* are
closed.
Watch during the closing process to be
sure that no one is injured. Removing the
hand from the door handle stops the closing
process immediately.<
Opening luggage compartment lid/
tailgate separately
Press the button on the luggage compartment
lid/tailgate. This corresponds to pressing the
button.
If a remote control accidentally left in the
luggage compartment/cargo area is
detected in the locked vehicle after closing the
luggage compartment lid/tailgate or the rear
window, the lid or rear window opens again. The
hazard warning flashers flash and a signal
*
sounds.<
Sports Wagon: opening rear window
separately
Press the button on the rear window, refer to
page34.
Switching on radio readiness
By briefly pressing the Start/Stop button, you
switch on the radio readiness, refer to page58.

Driving
70 Use good judgment to select the appro-
priate following distance given road con-
ditions, traffic, applicable laws and driving rec-
ommendations for a safe following distance.<
Deactivate system
Press the lever up or down. The displays in the
instrument cluster disappear.
You also deactivate the system when you
brake, shift very slowly or into neutral, or
engage the selector lever position N. In addi-
tion, the system is deactivated automatically:
>When you activate DTC Dynamic Traction
Control
>When you deactivate DSC Dynamic Stabil-
ity Control
>When the system does not recognize any
objects for a longer time, e. g. on infre-
quently traveled roads without a shoulder or
guard rails, or if the radar sensor is covered
with dirt, refer to page71
>When the speed is reduced to below
20 mph/30 km/h due to a traffic situation
The system deactivates automatically
when the speed is set to below 20 mph/
30 km/h. A signal sounds and a message
appears on the Control Display. The active intervention of the driver is required, otherwise
accidents can occur.<
Resume stored desired speed and
distance
Press button 4.
The displays appear in the instrument cluster.
When you switch off the ignition, the stored
desired speed is deleted.
Displays in instrument cluster
1Stored desired speed
2Lights up yellow: vehicle driving ahead is
detected
Flashes red, a signal sounds: the system
cannot establish the distance, apply the
brakes yourself
Flashes yellow: driving stability control sys-
tems intervene, the active cruise control is
deactivated
3Selected distance to vehicle driving ahead:
lights up as soon as the system is activated
4Selected desired speed appears briefly
If the display ACC --- mph/km/h briefly
appears in the instrument cluster, it might
be that conditions necessary for operation are
not currently being met. To call up Check Con-
trol messages, refer to page79.< Distance 3
This distance is set when the sys-
tem is used for the first time after
starting the engine.
Distance 4

Everything under control
74
Everything under control
Odometer, outside
temperature display, clock
1Time, outside temperature and data
2Odometer and trip odometer
3Press button:
>with ignition switched on, trip odometer
is reset
>briefly display the time, outside temper-
ature and odometer with the ignition
switched off
From radio readiness the outside temperature
and the time are displayed.
Date retrieval:
Press CHECK button on turn signal lever, refer
to page80.
Time and date setting, refer to page82.
You can set the unit of measure 7 or 6 on the
Control Display, refer to Units of measure on
page84.
Outside temperature warning
If the display drops to +377/+36, a signal
sounds and a warning lamp lights up. A mes-
sage appears on the Control Display. There is
an increased danger of ice.
Even at temperatures above +377/
+36 ice can form. Therefore, drive care-
fully, e.g. on bridges and sections of road in the
shade, otherwise there is an increased accident
risk.<
Tachometer
The white-striped advance warning field,
arrow1, changes depending on the engine
temperature. With increasing engine tempera-
ture the advance warning field becomes corre-
spondingly smaller. Avoid allowing the engine
speed to rise as far as the orange warning sec-
tor whenever possible.
Be sure to avoid engine speeds in the red warn-
ing field, arrow2. In this range, the fuel supply is
interrupted to protect the engine.
Coolant temperature
Should the coolant, and with it the engine
become too hot, a warning lamp lights up. In
addition, a message appears on the Control
Display.
Checking coolant level, refer to page207.

Controls
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Technology for comfort, convenience and
safety
PDC Park Distance Control*
The concept
The PDC assists you when you are parking.
Acoustic signals and an optical display
* alert
you to the approach of an object from behind
your vehicle. To measure the distance, there
are four ultrasonic sensors in each bumper.
The range of these sensors is approx. 7 ft/2 m.
However, an acoustic warning first sound for
the sensors at the front and at the two rear cor-
ners at approx. 24 in/60 cm, and for the center
rear sensors at approx. 5 ft/1.50 m.
PDC is a parking aid that can indicate
objects when they are approached
slowly, as is usually the case when parking.
Avoid approaching an object at high speed, oth-
erwise the physical circumstances would mean
that the system warning was too late.<
Automatic activation
The system starts to operate automatically
approx. 1 second after you select reverse gear
or move the selector lever into the R position
with the engine running or the ignition switched
on.
Wait this short period before driving.
Manual activation
Press button, the LED lights up.
Manual deactivation
Press the button again; the LED goes out.
After driving approx. 165 ft/50 m or at over
approx. 20 mph/30 km/h, the system is
switched off and the LED goes out. You can
reactivate the system manually as needed.
Signal tones
When nearing an object, the position is corre-
spondingly indicated by an interval tone. Thus,
an object detected to the left rear of the vehicle
will be indicated by a signal tone from the left
rear speaker, etc. As the distance between
vehicle and object decreases, the intervals
between the tones become shorter. If the dis-
tance to the nearest object falls to below
roughly 1 ft/30 cm, then a continuous tone
sounds.
An intermittent tone is interrupted after approx.
3seconds:
>if you remain in front of an object that was
only detected by one of the corner sensors
>if you drive parallel to a wall
Malfunction
The LED in the button flashes and a message
appears on the Control Display. PDC is mal-
functioning. Have the system checked.
To prevent this problem, keep the sensors
clean and free of ice or snow in order to ensure
that they will continue to operate effectively. Do
not spray the sensors with high-pressure clean-
ers for long periods and maintain a distance of
at least 4 in/10 cm to them.
PDC with visual warning*
You can also have the system show distances
to objects on the Control Display. Objects that
are farther away are already shown there before
a signal tone sounds. The setting is stored for
the remote control currently in use.

Controls
89Reference
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Mobility
Malfunction
If the HDC display goes out in the HDC mode or
is not shown:
HDC is temporarily not available, as the brake
temperature is too high.
Dynamic Drive*
The concept
Dynamic Drive minimizes body roll and opti-
mizes vehicle stability during cornering and
evasive maneuvers.
Dynamic Drive is based on active stabilizers on
the front and rear axles. Suspension compli-
ance adapts to suit driving conditions, varying
from performance-oriented during cornering to
smooth and comfort-oriented when the vehicle
is proceeding in a straight line. During vehicle
operation, the system continuously runs
through closed-loop control cycles lasting only
fractions of a second.
The system assumes operational status each
time you start the engine.
Malfunction
The warning lamp lights up yellow and
a message is shown on the Control Dis-
play. There is a malfunction in the sys-
tem. Have the system checked as soon as pos-
sible.
If a malfunction occurs, please remember
to adapt your speed accordingly, espe-
cially in curves.
The suspension will be noticeably softer and
the vehicle will display a greater tendency to tilt
during cornering and in crosswinds.
If a message stating that you should stop is
shown on the Control Display, stop at a suitable
location and switch off the engine as soon as
possible. In this case the oil level in the reservoir
may have dropped below the minimum, possi-
bly owing to a leak in the hydraulic system.
Do not continue driving, but instead contact
your BMW center.<
Sports Wagon:
Self-leveling suspension
xDrive: the vehicle is raised somewhat at
the rear after locking. This is normal and is
linked to minor noises.<
Malfunction
The warning lamp for self-leveling sus-
pension lights up yellow and a message
is shown on the Control Display. A mal-
function has occurred in the self-leveling sus-
pension. Stop and check the vehicle. If it is con-
siderably lower at the rear than at the front, and
possibly also on one side – rear left compared to
rear right –, go to the nearest BMW center or a
workshop that works according to BMW repair
procedures with correspondingly trained per-
sonnel. Drive with appropriate caution in the
meantime. The vehicle has reduced ground
clearance and driving comfort may be notice-
ably reduced. Even if the position of the vehicle
is normal, go to the nearest BMW center or a
workshop that works according to BMW repair
procedures with correspondingly trained per-
sonnel.
Flat Tire Monitor FTM
The concept
The Flat Tire Monitor keeps track of the infla-
tion pressures in the tires as you drive. The sys-
tem provides an alert whenever the inflation
pressure drops significantly in relation to the
pressure in another tire.
In the event of a pressure loss, the rolling radius
and therefore the rotation speed of the wheels
change. This change is detected and is
reported as a flat tire.
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be initialized for the cor-
rect tire inflation pressure.

Technology for comfort, convenience and safety
90 The initialization must be repeated after
each time the tire inflation pressure is cor-
rected and after every tire or wheel change.<
System limits
The Flat Tire Monitor cannot indicate
sudden severe tire damage caused by
outside factors and does not detect a natural,
even pressure drop in all four tires.<
In the following situations, the system could be
delayed or malfunction:
>System has not been initialized
>Driving on snowy or slippery road surface
>Sporty driving style: slip in the drive wheels,
high lateral acceleration
>Driving with snow chains
*
When you are driving with the compact wheel*
the Flat Tire Monitor is unable to function.
Initializing system
The initialization finishes during driving,
which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically. Do not initialize the sys-
tem when driving with snow chains
* or com-
pact wheel
*.<
iDrive, for explanation of principle, refer to
page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Vehicle settings" and press the
controller.
4.Select "FTM" and press the controller.
5.Start the engine, but do not start driving.6.Select "Set tire pressure" and press the
controller.
7.Select "Yes" and press the controller.
8.Start to drive.
The message "Initializing..." is displayed.
The initialization finishes during driving. Then
the message "Status: FTM active" appears on
the Control Display again.
Indication of a flat tire
The warning lamp lights up red. A mes-
sage appears on the Control Display.
In addition, an acoustic signal sounds.
There is a flat tire or extensive inflation pressure
loss.
1.Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.
2.Identify damaged tire.
If identification is not possible, con-
tact a BMW center.<
3.Replace the damaged wheel, refer to
Changing wheels on page215.
Run-flat tires*
1.Cautiously reduce speed to below 50 mph/
80 km/h. Avoid sudden braking and steer-
ing maneuvers. Do not exceed a speed of
50 mph/80 km/h.
If the vehicle is not equipped with run-
flat tires, refer to page201, do not
continue driving. Continuing to drive with a
flat tire could cause severe accidents.<
2.At the next opportunity, check the air pres-
sure in all four tires.

Technology for comfort, convenience and safety
92
All wheels are yellow
Flat tire or a major drop in inflation pressure in
several tires. A message appears on the Control
Display.
Gray
The system cannot detect a flat tire.
Reasons for this can be:
>TPM is being reset
>Temporary interference due to systems or
devices which use the same radio fre-
quency
>Malfunction
Resetting system
Reset the system again after each correc-
tion of the tire inflation pressure and after
every tire or wheel change.<
Resetting finishes during driving, which can be
interrupted at any time. When driving resumes,
resetting is continued automatically. Do not
reset the system when driving with a compact
wheel
*.
iDrive, for explanation of principle, refer to
page16.
1.Press the button.
This opens the start menu.
2.Press the controller to open the menu.
3.Select "Vehicle settings" and press the
controller.
4.Select "TPM" and press the controller.
5.Start the engine, but do not start driving.
6.Select "Reset" and press the controller.7.Select "Yes" and press the controller.
8.Start to drive.
The tires are shown in gray and
"Resetting TPM..." is displayed.
After a few minutes of driving, the set tire infla-
tion pressures in the tires are applied as the set
values to be monitored. Resetting finishes dur-
ing driving. The tires are shown in gray on the
Control Display and "Status: TPM active" is dis-
played again.
If a flat tire is detected during resetting
and applying the tire inflation pressures,
all tires are shown in yellow on the Control Dis-
play. The message "Tire low!" is displayed.<
Message with low tire inflation
pressure
The warning lamp lights up yellow. A
message appears on the Control Dis-
play. In addition, an acoustic signal
sounds. There is a flat tire or extensive inflation
pressure loss.
1.Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.
2.Check whether your vehicle is equipped
with standard tires or run-flat tires.
You will recognize run-flat tires by a
circular symbol containing the letters
RSC on the side of the tire, refer to
page201.<