engine BMW 325I 2005 User Guide

Reference
At a glance
Controls
Driving tips
Mobility
45
Reverse gear
Select only when the vehicle is stationary.
When the gearshift lever is pressed to the left, a
slight resistance has to be overcome.
Sequential manual gearbox
SMG*
The concept
The sequential manual gearbox SMG is an
automated transmission in which operation of
the clutch and gearshifts are performed by an
electro-hydraulic system.
SMG is operated via the selector lever in the
center console and two shift paddles on the
steering wheel.
It offers you the following functions:
>Choice of manual or automatic operation:
sequential mode or Drive mode
>Choice of two driving programs: Normal or
Sport, refer to Dynamic Driving Control,
page46
>Automatic downshifting and prevention of
misshifting in sequential mode as well
>Acceleration assistant, refer to page47
Selector lever positions
The current selector lever position can be seen
on the center console.
>R: Reverse gear
>N: Neutral, idle
>One-touch functions for sequential mode:
+: manual upshifting
–: manual downshifting>D: Drive mode or sequential mode
N is automatically selected when the
driver's door is opened while the engine is
running, as long as the pedals, shift paddles and
selector lever are not operated.
This is indicated by an acoustic signal and a
flashing N in the instrument cluster.<
Gear indicator
R N 1 to 6
The gear currently engaged is displayed, pre-
ceded by a D in Drive mode.
This indicator is the only way you can
confirm whether or not the desired selec-
tor lever position is engaged.<
Shiftlock
Before moving the lever away from N with the
vehicle stationary, first depress the brake; oth-
erwise the desired gearshift will not be carried
out.
R Reverse
Select only when the vehicle is stationary.
Gear-change mode
The gears can be changed in two different
ways.
>Sequential mode
Gears are shifted by means of the shift pad-
dles or the selector lever.
>D Drive mode
All forward gears are shifted automatically.
You can switch from one mode to the other by
pressing the selector lever towards the right in
the direction of D.

Driving
46
Sequential mode
After every engine start, sequential mode is
activated when you press the selector lever
towards the right while the brake is depressed.
You can shift up or down using the shift paddles
or the selector lever. You do not need to lift your
foot from the accelerator pedal while doing so.
It is also possible to start off in second gear, e.g.
on slippery surfaces.
SMG assists you in the following situations:
>Upshifts and downshifts are executed only
when they will result in a plausible combina-
tion of engine and vehicle speed; for exam-
ple, a downshift that would cause the
engine to overrev cannot be executed by
the system.
>The system shifts down into first gear auto-
matically when the vehicle comes to a stop.
>The system shifts down automatically just
before the engine speed falls below the
minimum speed required for a certain gear;
the driver does not need to intervene.
Shifting gears via selector lever
>Pull the selector lever backwards to shift up.
>Push it forward to shift down.
Shifting gears via the shift paddles on
the steering wheel
>Pull one of the shift paddles to shift up.
>Press it to shift down.
D Drive mode
In Drive mode, all forward gears are shifted
automatically.To switch from sequential mode to Drive mode:
press the selector lever towards the right in the
direction of D.
Kick-down: to accelerate rapidly, e.g. when
passing another vehicle, depress the accelera-
tor pedal all the way. You will achieve maximum
acceleration.
To switch back to sequential mode: press the
selector lever again towards the right in the
direction of D or shift gears via the shift paddles
or the selector lever.
On uphill slopes, drive off without delay.
Do not hold the vehicle in place by
depressing the accelerator pedal; engage the
handbrake instead. Otherwise, the transmis-
sion could overheat.<
Dynamic Driving Control
Dynamic Driving Control enables you to drive
your BMW in an even more performance-ori-
ented manner at the touch of a button:
>Gears are shifted more quickly.
>In Drive mode, the engine speed range is
utilized optimally.
Activating the system
Press the SPORT button while the ignition is
switched on. The LED in the button lights up.
Deactivating the system
>Press the SPORT button again or
>engage reverse gear or
>switch off the engine.
The LED in the button goes out.

Reference
At a glance
Controls
Driving tips
Mobility
47
Acceleration assistant
The acceleration assistant provides for optimal,
racing-style acceleration when starting off on a
non-slippery surface.
Do not use the acceleration assistant too
frequently, otherwise components could
wear prematurely.<
1.Activate Dynamic Driving Control.
2.Deactivate DSC, refer to page68.
3.Quickly depress the accelerator pedal all
the way: kick-down. The optimal engine
speed for pulling away is achieved.
To maintain driving stability, reactivate
DSC afterward.<
Automatic transmission with
Steptronic*
In addition to fully automatic operation, you can
also manually shift with the Steptronic, refer to
page48.
Vehicle parking
To prevent the vehicle from rolling,
always select position P and apply the
handbrake before leaving the vehicle with the
engine running.<
Disengaging the remote control
In order to remove the remote control from the
ignition lock, you must first move the selector
lever to position P and switch off the engine:
interlock.
Selector lever positions
P R N D M/S + –
Displays in the instrument cluster
P R N D DS M1 to M6
The selector lever position is displayed, or the
current gear in the manual mode.
Changing selector lever positions
>With the ignition switched on or the engine
running, the selector lever can be moved
out of position P: interlock.
>Before moving the lever away from P or N
with the vehicle stationary, first depress the
brake; otherwise the selector lever will
refuse to move: shiftlock.
To prevent the vehicle from creeping
after you select a driving position,
depress the brake until you are ready to
start.<
A lock prevents you from inadvertently engag-
ing selector lever positions R and P. To cancel
the lock, press the button on the front of the
selector lever, refer to arrow.
P Park
Select only when the vehicle is stationary. The
rear wheels are locked.

Driving
48
R Reverse
Select only when the vehicle is stationary.
N Neutral, idle
You can select this in a car wash, for example.
The vehicle can roll.
D Drive, automatic position
Position for normal vehicle operation. All for-
ward gears are selected automatically.
Under normal operating conditions, fuel con-
sumption is lowest when you are driving in posi-
tion D.
Kick-down
Kick-down enables you to achieve maximum
performance.
Press the accelerator pedal beyond the full-
throttle resistance point.
Manual operation and Sport program
M/S
Move selector lever from position D toward the
left into the M/S shifting slot:
The sport program is activated and DS appears
in the instrument cluster. This position is rec-
ommended for a performance-oriented driving
style.
When you press the selector lever forwards or
backwards, the manual mode is activated and
Steptronic changes gear. The instrument clus-
ter shows M1 through M6.
Upshifts and downshifts are executed only
when they will result in a plausible combination
of engine and vehicle speed; thus, for example,
a downshift that would cause the engine to
overrev will not be executed by the system. The gear selected appears briefly in the instrument
cluster, followed by the gear actually in use.
To use the automatic function again, move the
selector lever to the right into position D.
Overriding selector lever lock
Should the selector lever refuse to move out of
position P although the button on the selector
lever is pressed, the selector lever lock can be
overridden:
1.Unclip the sleeve of the selector lever.
2.Pull the sleeve up over the selector lever
until the sleeve is inside out.
3.Using the screwdriver from the onboard
tool kit, refer to page125, press the red
lever while moving the selector lever to the
desired position.
Turn signals/
headlamp flasher
1High beams
2Headlamp flasher
3Turn signals

Driving
50
Normal wiper speed
Press once.
The system switches to operation in the inter-
mittent mode when the vehicle is stationary.
Fast wiper speed
Press twice or press beyond the resistance
point.
The system switches to normal speed when the
vehicle is stationary.
Intermittent wipe or rain sensor*
If the car is not equipped with a rain sensor, the
intermittent-wipe time is a preset.
If the car is equipped with a rain sensor, the time
between wipes is controlled automatically and
depends on the intensity of the rainfall. The
sensor is mounted on the windshield, directly in
front of the interior rearview mirror.
Activating intermittent wipe or rain
sensor
Press button 3. The LED in the button lights up.
Setting speed for intermittent wipe or
sensitivity of the rain sensor
Slide switch5 up or down.
Deactivating intermittent wipe or rain
sensor
Press button 3 again. The LED goes out.
Deactivate the rain sensor before enter-
ing an automatic car wash. Failure to do
so could result in damage caused by undesired
wiper activation.<
Cleaning windshield and headlamps*
Pull lever 4.
Washer fluid is sprayed onto the windshield and
the wipers are operated for a short time.
When the vehicle lighting system is switched
on, the headlamps are cleaned at regular and
appropriate intervals.
Do not use the washers if there is any
danger that the fluid will freeze on the
windshield. If you do, your vision could be
obscured. Antifreeze should therefore be
added to the fluid, refer to Washer fluid.
Do not use the washers when the washer fluid
reservoir is empty, otherwise you will damage
the washer pump.<
Windshield washer nozzles
The windshield washer nozzles are heated
automatically while the engine is running or the
ignition switched on.
Washer fluid
Washer fluid antifreeze is flammable.
Always keep it well away from sparks and
open flames, and store it in the tightly closed
original container, well out of the reach of chil-
dren. Comply with the instructions on the con-
tainer.<
Washer fluid reservoir
Fill with water and, if required, with a washer
antifreeze, according to manufacturer's recom-
mendations.

Reference
At a glance
Controls
Driving tips
Mobility
51
Mix the water and antifreeze before filling
the washer fluid reservoir to make sure
the correct concentration is maintained.<
Capacity
Approx. 6.3 US quarts/6 liters.
Cruise control*
The concept
Cruise control is available for use at speeds of
approx. 20 mph or 30 km/h. The car then stores
and maintains the speed that you specify using
the lever on the steering column. In order to
maintain the specified speed, the system
brakes the vehicle when the engine braking
effect is insufficient on downhill gradients.
Do not use cruise control when driving
conditions are unfavorable for driving at a
constant speed. Otherwise you could lose con-
trol of the vehicle and cause an accident as a
result. Unfavorable driving conditions include,
for example, winding roads, heavy traffic or a
poor road surface, e.g. snow, rain, ice or loose
material.<
Manual transmission/SMG
You can shift gears while cruise control is acti-
vated. An indicator lamp notifies you that you
should shift gears when you drive for an
extended period at very high or very low engine
speeds, or the system is deactivated.
In Drive mode, the SMG acts similarly to an
automatic transmission in position D.
One lever for all functions
1Storing and maintaining speed or accelerat-
ing
2Storing and maintaining speed or deceler-
ating
3Deactivating cruise control
4Resuming a speed stored beforehand
Maintaining current speed
Tap the lever, arrow 1, or pull it briefly, arrow 2.
The car's current speed is stored and main-
tained. It is displayed in the speedometer and
briefly in the instrument cluster.
On uphill gradients, it may prove impossible to
maintain the set speed if current engine power
output is insufficient. If the engine braking
effect is insufficient on downhill slopes, the sys-
tem will brake the vehicle slightly.
Increasing desired speed
Repeatedly press the lever to the resistance
point or beyond, arrow1, until the desired
speed is reached.
>Each time the lever is pressed to the resis-
tance point, the desired speed is increased
by approx. 1 mph or 1 km/h.
>Each time the lever is pressed beyond the
resistance point, the desired speed is
increased by up to 5 mph or 10 km/h.
The system stores and maintains the speed.
Accelerating using the lever
Accelerating slightly:
Press the lever to the resistance point, arrow 1,
until the desired speed is reached.
Accelerating significantly:

Reference
At a glance
Controls
Driving tips
Mobility
53
Active cruise control*
The concept
With active cruise control, you can select a
desired speed which is not only automatically
maintained when driving on open roadways, but
also varied to maintain a selected distance set-
ting as slower traffic is encountered.
Active cruise control is a technological advance
over the familiar cruise control and is a welcome
relief from the constant adjustment of speed
that can accompany driving in traffic on high-
ways or other high-speed thoroughfares. Espe-
cially on longer trips, the system can reduce
fatigue and tension, while increasing your
enjoyment of driving. Please use it safely and
responsibly.
Within the limits of its capability, the system
automatically adapts the car's speed to that of a
slower vehicle in front of you. You can specify
the distance to be maintained from the vehicle
in front in four stages. For safety reasons, the
distance is speed-dependent. Based on your
selected distance setting, the system automat-
ically decreases the throttle setting and lightly
applies the brakes if necessary. The vehicle
brake lamps will automatically illuminate to sig-
nal a following driver to take action. In addition,
it may be necessary for the vehicle or the driver
to downshift, depending on the kind of trans-
mission your vehicle is equipped with, to main-
tain the distance setting selected. If the vehicle
ahead speeds up or when the lane ahead
becomes clear, your vehicle will accelerate to
the speed you have selected by increasing the
throttle setting and shifting gears automatically
or by the driver as needed. Your selected speed
will be held when driving downhill, too.
Since this active cruise control system is a new
technology and operates differently from con-
ventional cruise control systems which you may
be accustomed to, you are strongly urged to
read all of the pages relating to this system
before use. Pay special attention to the System
limitations section beginning on page57.
Braking sensation
The system's automatic brake operation results
in a braking sensation that is slightly different
from what you feel when you brake the vehicle
yourself in a similar situation. Possible noises
during automatic deceleration are normal.
Manual transmission/SMG
You can shift gears while cruise control is acti-
vated. An indicator lamp notifies you that you
should shift gears when you drive for an
extended period at very high or very low engine
speeds, or the system is deactivated.
In Drive mode, the SMG acts similarly to an
automatic transmission in position D.
Range of applications
The minimum desired speed is 20 mph or
30 km/h, and the maximum desired speed is
110 mph or 180 km/h.
As with conventional cruise control sys-
tems, active cruise control in no way
diminishes or substitutes for the driver’s own
personal responsibility, alertness and aware-
ness in adjusting speed, braking or otherwise
controlling the vehicle. The driver should
decide when to use the system on the basis of
road, traffic, visibility, and weather conditions.
Active cruise control is intended for use on
highway-type roadways where traffic is moving
relatively smoothly. Do not use this system in
city driving; heavy traffic such as during rush
hour; on curvy, winding roads, slippery roads or
roads with sharp curves such as highway off-
ramps; during inclement weather such as snow,
strong rain or fog; or when entering inter-
changes, service/parking areas or toll booths.
It is also important to regulate your vehicle's
speed and distance setting within applicable
legal limits. Always be ready to take action or
apply the brakes if necessary, especially when
the system is actively following a vehicle in front
of you. Otherwise, driving conditions could
result which violate the law or pose a risk of
accident.<

Driving
54
One lever for all functions
1Store and increase desired speed
2Store and decrease desired speed
3Deactivate system, refer to page55
4Resume stored desired speed and dis-
tance, refer to page56
5Select distance to vehicle driving ahead,
refer to page55
Maintaining current speed
Briefly press the lever, arrow 1, or briefly pull it,
arrow 2, at a driving speed of more than approx.
20 mph or 30 km/h.
The car's current speed is stored and main-
tained. It is displayed in the speedometer and
briefly in the instrument cluster.
On uphill gradients, it may prove impossible to
maintain the set speed if current engine power
output is insufficient. If the engine braking
effect is insufficient on downhill slopes, the sys-
tem will brake the vehicle slightly.
Adjusting desired speed
Adjust your desired speed to the traffic
conditions and remain ready to brake at
all times, otherwise there is a risk of accident.
Great differences in speed to the vehicle ahead, e.g. when quickly approaching a truck or when
another vehicle swerves into your lane, cannot
be compensated for by the system.<
Increasing in increments
Repeatedly tap the lever to the resistance point
or beyond, arrow1, until the desired speed is
reached.
>Each time the lever is tapped to the resis-
tance point, the desired speed is increased
by approx. 1 mph or 1 km/h.
>Each time the lever is tapped beyond the
resistance point, the desired speed is
increased by up to 5 mph or 10 km/h until
the maximum speed of 110 mph or
180 km/h is achieved.
The speed then displayed is stored and
achieved on a clear road.
Increasing continuously
Repeatedly press the lever to the resistance
point or beyond, arrow1, until the desired
speed is reached.
The speed then displayed is stored and
reached as soon as the road ahead of you is
clear.
Decreasing in increments
Repeatedly pull the lever to the resistance point
or beyond, arrow 2, until the desired speed is
reached.
>Each time the lever is pulled to the resis-
tance point, the desired speed is decreased
by approx. 1 mph or 1 km/h.
>Each time the lever is pulled beyond the
resistance point, the desired speed is
reduced by up to 5 mph or 10 km/h until the
minimum speed of 20 mph or 30 km/h is
achieved.
The speed then displayed is stored and
achieved on a clear road.

Reference
At a glance
Controls
Driving tips
Mobility
55
Selecting distance
>Press downward:
Increase distance
>Press upward:
Decrease distance.
The selected distance is displayed in the instru-
ment cluster.
Use good judgement to select the appro-
priate following distance given road con-
ditions, traffic, applicable laws and driving rec-
ommendations for safe following distance.
Otherwise, you may be in violation of the law or
an accident could result.<
Deactivating cruise control
Press the lever upward or downward, arrow3.
The displays in the speedometer disappear.
In addition, the system is automatically deacti-
vated:
>When you brake the vehicle
>When the speed is reduced to below
20 mph or 30 km/h due to a traffic situation
>When you switch gears very slowly or shift
to idle in cars with manual transmission
>When you select the automatic transmis-
sion's/SMG's neutral position N
>When you activate the Dynamic Traction
Control DTC
>When you deactivate the Dynamic Stability
Control DSC
>When DSC or ABS is intervening
>When the system does not recognize any
objects for a longer period of time, e.g. on
infrequently traveled roads without a shoul-
der or guard rails, or if the radar sensor is
covered with dirt, refer to page56
>When you apply the handbrake
When the system is deactivated, you
must brake the vehicle yourself and/or
maneuver as necessary, otherwise there is a
risk of accident.<
Warning lamp
The warning lamp comes on when
active cruise control has been auto-
matically deactivated due to a driving
speed below 20 mph or 30 km/h, an application
of the handbrake or a DSC intervention. Distance 1
Distance 2
Distance 3
This distance is always set when
the system is used for the first
time after starting the engine.
Distance 4

Reference
At a glance
Controls
Driving tips
Mobility
59
Everything under control
Odometer, outside
temperature display, clock
1Resetting trip odometer
2Outside temperature display and clock
3Odometer and trip odometer
Units of measure
T o s e l e c t t h e r e s p e c t i v e u n i t s o f m e a s u r e , m i l e s
or km for the odometer as well as 7 or 6 for
the outside temperature, refer to page62.
Outside temperature display, clock
Setting the time, refer to page64.
Outside temperature warning
When the displayed temperature sinks to
approx. +377/+36, a signal sounds and a
warning lamp lights up. There is an increased
risk of black ice.
Black ice can also form at temperatures
above +377/+36. You should there-
fore drive carefully on bridges and shaded
roads, for example, otherwise there is an
increased risk of an accident.<
Odometer and trip odometer
Resetting trip odometer:
With the ignition switched on, press button1 in
the instrument cluster.
When the vehicle is parked
If you still want to view the time, outside tem-
perature and odometer reading briefly after the
remote control has been removed from the igni-
tion lock:
Press button 1 in the instrument cluster.
Tachometer
Never force the engine speed up into the red
warning field, see arrow. In this range, the fuel
supply is interrupted to protect the engine.
Coolant temperature
A warning lamp will come on if the coolant, and
therefore the engine, becomes too hot.
Check coolant level, refer to page121.