BMW 323ci Convertible (2000 year). Instruction — part 13

168n

Jump-starting

Do not use spray starter fluids to start

Start the support vehicle's engine

the engine.

and let it run

Start the engine on the vehicle need-

If the battery is drained, the engine can

ing the jump-start, and allow it to run

be started using two jumper cables and

as usual. If the first start attempt is

another vehicle's battery. Use only

not successful, wait a few minutes

jumper cables with fully insulated

before another attempt in order to

handles on the terminal clamps.

allow the drained battery to recharge

Before disconnecting the jumper

Do not touch the parts conducting

cables from your BMW, turn on the

electrical current while the engine

rear window defroster and set the

is running. Failure to comply with this

blower to the highest speed; allow the

creates a risk of fatal injury.<

ing is identified by a "+" sign. Refer to

engine to run approx. 10 seconds.

the illustration. Remove by pulling the

This will prevent a voltage surge from

Carefully comply with the following in-

structions to avoid personal injury or

tab (arrow 1)

the voltage regulator to the electrical

Then connect the negative terminals.

accessories

damage to one or both vehicles:

Attach the cable to either the support

Then disconnect the jumper cables in

1 Be sure that the battery on the sup-

vehicle's negative battery terminal (-),

reverse sequence.

port vehicle is also rated at 12 volts,

or to a suitable ground on its engine

Depending on the reason for the mal-

and that the capacities of the two

or bodywork. Then connect the other

function, recharge the battery.

batteries (Ah) are roughly comparable

end of the cable to a ground on the

(printed on casing)

engine or on the bodywork of the ve-

2 Leave the drained battery connected

hicle that is to be started. There is a

to the vehicle's electrical system

special nut provided for this on the

3 Make sure that there is no contact

BMW (arrow 2)

between the bodywork of the two

vehicles - short circuit risk!

Follow the same sequence for

4 Start by connecting the jumper cable

connecting the jumper cables

from the positive terminal of the sup-

when helping other vehicles. If you do

port vehicle to the positive terminal

not, there is the risk of injury if sparks

connector located in your BMW's

are generated at the battery.<

engine compartment. The cover of

the auxiliary terminal for jump-start-

Towing the vehicle

169n

Tow fitting

Rear:

Towing with a commercial tow

The screw-in tow fitting is stored in the

Using a screwdriver, press out the cover

truck

onboard tool kit; be sure that it remains

panel on the top part of the recess.

> Do not tow with sling-type equipment

in the vehicle at all times. This fitting

> Use wheel lift or flat bed equipment

is designed for installation in the tow

Screw the tow fittings in com-

pletely and tightly. If you do not,

> Please comply with applicable state

sockets located at the front and rear of

the threads could be damaged.

towing laws.

the vehicle. It is intended for towing on

paved road surfaces only. This fitting

Do not tow the vehicle by any compo-

nents of the running gear, or lash them

Never allow passengers to ride in

should not be used to pull a vehicle out

down in any way. If you do, the compo-

a towed vehicle for any reason.

of deep snow, mud, sand, etc.

nents could be damaged, leading to

Never attach tie-down hooks, chains,

Always comply with all applicable

possible accidents.<

straps, or tow hooks to the tie rods,

towing laws and regulations.

control arms, or any other part of the

vehicle suspension. If you do so, severe

Access to tow sockets

damage will occur to these compon-

Front:

ents.c

Using a screwdriver, press out the cover

panel on the top part of the recess.

170n

171n

Adaptive Transmission Control

Overview

(ATC)

172

Airbags

173

Dynamic Stability Control

(DSC)

173

Radio reception

174

Controls and features

Safety belt tensioner

174

Interior rearview mirror with

automatic dimmer

175

Rain sensor

176

Operation, care

Tire Pressure Control (RDC)

177

Self-diagnostics

178

and maintenance

Rollover protection system

179

Xenon lamps 179

Owner service procedures

Advanced technology

Technical data

Index

Technology

172n

ATC*

In order to include driving conditions in

its calculations, ATC registers curves

and both uphill and downhill gradients.

For example, if you maintain speed

through a curve, the transmission does

not shift up.

On uphill gradients, it shifts up only

when the engine speed increases in

order to make more efficient use of

power reserves. On downhill gradients,

ATC shifts down when the speed of the

vehicle increases and the driver must

apply the brakes.

For vehicles with automatic transmis-

sion*, Adaptive Transmission Control

(ATC) makes the optimum gear selec-

tion based on a number of factors. In

this process, it considers your individ-

ual driving style as well as current

driving conditions.

ATC recognizes your personal driving

style from the positions and movements

of the accelerator pedal, deceleration

when braking, and lateral acceleration

through curves. ATC makes the appro-

priate selection based on various shift

characteristics, which range from com-

fort- to performance-oriented.

Airbags

DSC

173n

The airbags located under the marked

Highly sensitive sensors monitor the

covers inflate and unfold in a matter of

wheel speeds, steering angle, lateral

a few milliseconds. In this process, they

acceleration, brake pressure and the

tear through the designed separation

movement of the vehicle around its

points of the upholstered covers or

vertical axis.

press them out.

If differences in the wheel speeds occur,

Because the inflation process must be

the system counteracts the danger of

virtually instantaneous, it is necessarily

wheelspin by reducing torque. If neces-

accompanied by a certain amount of

sary, the system also responds with

ignition and inflation noise. The gas

additional brake applications at the

required to inflate the airbags is not

rear wheels.

dangerous, and the smoke associated

In addition, DSC permanently monitors

Deceleration sensors continuously

with it dissipates.

the vehicle's current operating condition

monitor the acceleration forces acting

The entire process is completed within

and compares it with an ideal condition

upon the vehicle. If, as the result of a

fractions of a second.

that is calculated from the sensor sig-

frontal collision, a deceleration is

nals. If deviations from this occur (un-

reached at which the protection of the

dersteering or oversteering, for in-

safety belts alone is no longer ade-

stance), DSC can stabilize the vehicle in

quate, the gas generators of the driver

fractions of a second by reducing engine

and passenger-front airbags are ignited.

output and with the assistance of brak-

However, the passenger-side airbag is

ing intervention at individual wheels.

only triggered if an additional sensor

As a result, most skids can be preven-

has recognized that the passenger seat

ted from their very onset.

is occupied.

You may need some time to become

In the event of a side collision, the

accustomed to this system intervention.

side airbags in the front are triggered

However, it provides optimum drive

if necessary.

force and vehicle stability.

The braking intervention may be

accompanied by sounds specific to

the system.

174nRadio reception

Safety belt tensioner

The limitations inherent to radio recep-

tion in a moving vehicle have been min-

imized by a number of innovative sys-

tem designs:

The "Radio Data System" (RDS) makes

sure that, for stations broadcasting on

several frequencies, the radio automati-

cally tunes to the frequency with the

best reception quality.

With the Diversity Antenna system, sev-

eral FM antennas are integrated within

the convertible top compartment lid to

The AM frequency bands (medium-

provide three separate sources for re-

The safety belt tensioners respond to

wave, long-wave and short-wave)

severe head-on collisions by tightening

ceiving broadcast waves. An integral

make it possible to receive stations

processor automatically selects the an-

the belts to ensure that occupants

from a great distance, because the

remain firmly positioned in their seats.

tenna with the best FM reception qual-

broadcast signals travel not only along

ity at any given time. The selection of

A gas-pressure system retracts the

the ground as surface waves, but also

buckle assembly to tension the shoul-

the antenna takes place within millisec-

as atmospheric waves that are re-

onds, and is therefore not noticed by

der and lap belts within fractions of a

flected from the ionosphere.

second. This reduces the tendency to

the radio listener.

Frequency-modulation (FM) provides

slide under the lap belt.

substantially better sound quality than

the other frequencies. However,

because FM transmissions rely on line-

of-sight broadcast waves, their effec-

tive reception range is limited.

Interior rearview mirror with automatic dimmer*

175n

The semisolid reacts chemically to this

electrical current, dimming the mirror

through an infinitely-variable range

(electrochromic technology).

As a result, it is no longer necessary to

dim the mirror manually, and the driver

can concentrate completely on traffic

conditions.

The interior rearview mirror with auto-

matic dimming feature reduces glare by

adapting the intensity of the reflected

images to correspond to levels of light

registered by the unit's sensors. The

mirror reverts to its undimmed setting

as soon as the light source disappears.

One light sensor is mounted on the front

of the mirror housing. This sensor, the

one that is directed forward, measures

light intensity in the area ahead of the

vehicle. The second sensor is inte-

grated within the mirror's glass. The

electronic control system compares the

light intensity from front and rear. The

difference provides the basic parameter

used to modulate an electrical current

and induce chemical changes in a semi-

solid layer incorporated in the lens.

176nRain sensor*

When the system is set to the "Intermit-

tent" wiper speed, the wipers react im-

mediately - if water is splashed onto the

windshield by vehicles traveling ahead

of you, for example. As a result, the rain

sensor contributes to driving safety and

comfort.

Depending on how wet the windshield

is, the rain sensor controls the opera-

tion of the windshield wipers.

Infrared light is carried along the sur-

face of the windshield in an optical con-

ductor in such a manner that it is re-

flected completely when the windshield

is dry. The quantity of reflected light is

measured.

If there is moisture on the glass, the

amount of light reflected is reduced

since the infrared light at the surface of

the windshield can escape. The quan-

tity of reflected light is thus a means of

gauging the degree of wetness on the

windshield.

Tire Pressure Control (RDC)*

177n

There is an antenna located right near

every wheel in the vehicle body. Each

antenna picks up signals from its re-

spective wheel. A central electronics

system evaluates all four signals and

forwards any changes. The RDC pro-

vides an important contribution to

driving safety.

This system regularly checks tire pres-

sure and monitors all four tires even

while driving, so you don't have to.

Behind the valve stem in every wheel,

there is an electronic chip that is de-

signed for severe-duty applications

and long service life. It contains a

pressure sensor, a transmitter and a

battery. The pressure is measured in

extremely short time intervals and then

transmitted by a radio signal. If an

irregularity is detected, the transmis-

sion rate is increased.

178nSelf-diagnostics

In the same manner, the electrical re-

The sounds the automatic climate con-

sistance of the airbag ignition genera-

trol makes as it carries out its self-diag-

tors and all of the remaining airbag

nostics are noticeable because of the

components is measured at all times.

noise that the ventilation flaps make af-

Any fault in this system would be de-

ter the ignition has been switched off.

tected immediately by a current fluctua-

All of the other self-diagnostics func-

tion that would necessarily accompany

tions operate silently in the back-

it. The fault would be indicated immedi-

ground.

ately by the airbag warning lamp.

Any possible defects detected during

Even after you shut off the engine, the

these self-diagnostics can be read out

overall functional status of your vehicle

by your BMW center and quickly cor-

is being monitored. For example, all of

rected during the vehicle's next regu-

All of the important electrical and elec-

the flaps for the heating and ventilation

larly scheduled maintenance.

tronic systems in the vehicle are tested

system travel to the nearest limit posi-

regularly and automatically; the driver

tion. This action ensures that in any

does not have to perform any extra

case, the defrosting function will remain

operations or adjustments.

intact, even if a malfunction in the auto-

matic climate control should occur dur-

The indicator lamps come on briefly

ing the night while the vehicle is parked.

when the ignition is switched on.

A calibration cycle runs every tenth time

While you are driving, the functional

the engine is shut off. During this cycle,

status of the actuator motors (for the

the actuator motors of all the heating

windshield wipers, power windows,

and ventilation flaps travel to their limit

seats, etc.) is constantly analyzed by

stops in both directions. The limit posi-

current measurements in their relays.

tions and the return travel paths are

checked in this manner in order to en-

sure that appropriate adjustments for

the operating elements can be made at

any time.

Rollover protection system Xenon lamps*

179n

The rollover protection system offers

Xenon lamps provide significantly im-

additional protection apart from the air-

proved visibility, especially during ad-

bags and safety belts. The system has

verse weather and poor driving condi-

highly sensitive sensors that react im-

tions e.g. driving at night in heavy rain

mediately upon detecting an unstable

or through road repair areas where

vehicle condition, i.e. when the vehicle

there are no lane markers.

is tilted to a critical degree, or if the

Vehicles with xenon lamps are equipped

wheels are not making proper ground

with automatic headlamp range control.

contact. In this kind of situation, the

As a result, the highway is always opti-

protective bar in each rear head

mally lighted, regardless of road condi-

restraint is triggered.

tions, and drivers in oncoming traffic are

not blinded.

Xenon lamps illuminate the side and

Xenon lamps make a significant contri-

front areas of the vehicle with signifi-

bution to highway safety since pedestri-

cantly more brightness and uniformity

ans and other highway users, bicyclists

than the traditional halogen lamp.

and motorcyclists in the right lane, are

In a xenon lamp, an electric arc re-

more easily detected.

places the filament in order to generate

intense illumination. A gas mixture in a

quartz glass tube with metal vapor is

ignited by a high electric voltage. The

arc that is generated is then sustained

by a lower voltage. When the lamp is

turned on there is a brief warm-up

period. Maximum brightness is attained

in approx. 15 seconds.

180n

181n

Engine data

182

Overview

Dimensions

183

Weights

184

Capacities

185

Electrical system

186

Drive belts

186

Controls and features

Operation, care

and maintenance

Owner service procedures

Advanced technology

Technical data

Index

Data

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BMW 323ci Convertible (2000 year). Instruction — part 13

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