ECU BMW CONVERTIBLE 1998 Owners Manual

Congratulations, and thank you for choosing a BMW.
Thorough familiarity with your vehicle will provide you with enhanced control and
security when you drive it. Therefore, we have this request:
Please take the time to read this OwnerÕs Manual and familiarize yourself with the
information that we have compiled for you before starting off in your new car. It con-
tains important data and instructions intended to assist you in extracting maximum use
and satisfaction from your BMWÕs unique range of technical features. The manual also
contains information on care and maintenance designed to enhance operating safety
and contribute to maintaining your BMWÕs value throughout an extended service life.
This OwnerÕs Manual should be regarded as a permanent part of the vehicle. When the
vehicle is sold, the manual should remain in the car to furnish the next owner with a
source of important information on operation, safety and maintenance procedures.
This manual is supplemented by a Service and Warranty Information booklet
(US models only). We recommend that you read this publication carefully.
Your BMW is covered by the following warranties:

Ð

New Vehicle Limited Warranty

Ð

Limited Rust Perforation Warranty

Ð

Federal Emissions System Defect Warranty

Ð

Federal Emissions Performance Warranty

Ð

California Emission Control System Limited Warranty
Detailed information on these warranties is contained in the Service and Warranty
Information booklet.
We wish you many miles of driving pleasure and satisfaction.
BMW AG

Contents

At a glance
Controls and features

Cockpit16
Instrument cluster18
Indicator and warning
lamps20
Hazard warning system22
Hazard warning triangle22
First-aid kit22
Refueling23
Fuel specification23
CARB OBD II interface24
Tire inflation pressures25

Locks and security systems:

Keys30
Electronic immobilizing device35
Doors31
Trunk lid33
Luggage compartment34
Power windows35
Sliding/tilt sunroof36
Convertible top operation37

Adjustments:

Seats43
Steering wheel45
Mirrors46

Passenger safety systems:

Safety belts47
Child restraint system48
Installing child seats49
Airbags50
Child-safety locks52
Rollover protection system Ð
convertible52
Driving:

Steering/ignition lock54
Starting the engine54
Switching off the engine55
Parking brake56
Manual transmission57
Automatic transmission58
Turn signals/high beam60
Wiper/washer system61
Cruise control62

Everything under control:

Odometer63
Tachometer63
Energy control63
Fuel gauge64
Coolant temperature gauge64
Service Interval Display64
Multi-Information Display (MID)66
Outside temperature display
and digital clock68
Check Control71
Check Control with outside
temperature display and
digital clock74
Onboard computer77

Technology for driving comfort
and safety:

Automatic stability control
plus traction (ASC+T)84

28
Locks and security systems:
Keys30
Electronic vehicle immobilizer 30
Doors31
Luggage compartment lid33
Luggage compartment34
Power windows35
Sliding/tilt sunroof36
Convertible top operation37
Adjustments:
Seats43
Steering wheel45
Mirrors46
Passenger safety systems:
Safety belts47
Child restraint system48
Installing child seats49
Airbags50
Child-safety locks52
Rollover protection system Ð
convertible52Driving:
Steering/ignition lock54
Starting the engine54
Switching off the engine55
Parking brake56
Manual transmission57
Automatic transmission58
Turn signals/high beam60
Wiper/washer system61
Cruise control62
Everything under control:
Odometer63
Tachometer63
Energy control63
Fuel gauge64
Coolant temperature gauge64
Service Interval Display64
Multi-Information Display (MID)66
Outside temperature display
and digital clock68
Check Control71
Check Control with outside
temperature display and
digital clock74
Onboard computer77

30
1 Master key with battery-powered
lamp (switch on by pressing the BMW
symbol).
2 Master key without lamp.
3 Spare key to be kept in a safe place
e. g. in your wallet. This key is not
intended for continuous use.
4 Door and ignition key
This key does not operate the locks
for the glove compartment and the
luggage compartment. This is useful
e. g. at a hotel.The electronic vehicle immobilization
unit increases the anti-theft protection
of your BMW Ð without additional
adjustment or activation of systems.
This electronic immobilization system is
designed to reduce the susceptibility of
the vehicle to theft by making it impos-
sible to start the engine using any
means other than the special keys fur-
nished with the vehicle.
The system features an electronic chip
integrated within the key as a supple-
ment to the conventional mechanical
locking system.
The lock mechanism itself is actually a
dual-function device, simultaneously
serving as a communications interface
designed to allow the car security sys-
tem to maintain a continuous stream of
variable, vehicle-specific signals with
the electronic circuitry in the key. The
ignition, the flow of fuel and the starter
are enabled only after the key has been
recognized as "authorized".
b
External force can damage the
electronic circuitry integrated in the key.
Such a key can no longer be used to
start the engine.c
Replacement of a keyReplacement keys are available exclu-
sively through your authorized BMW
Retailer, who is also under obligation to
request verification of vehicle owner-
ship before issuing a substitute key.
Your BMW Retailer can also cancel or
restore the electronic system authoriza-
tion for individual keys (e.g., if a key is
lost). A deactivated key can no longer
be used to start the engine.For US owners onlyThe transmitter and receiver units com-
ply with Part 15 of the FCC (Federal
Communication Commission) Regula-
tions. Operation is governed by the fol-
lowing:
FCC ID: LXBEWS
As defined in the regulations, such a
device is not to emit significant interfer-
ence and must also be shielded against
interference from external sources to
prevent unauthorized or inadvertent
activation.a
Any unauthorized modifications
or changes to these devices could void
the userÕs authority to operate this
equipment.c
14
BMW
BMW
BMW
BMW
23
365de122Keys Electronic vehicle immobilizer

34
To closeThe handle recess (arrow) makes it eas-
ier to pull down the luggage compart-
ment lid.
a
Do not drive with the luggage lid
open, as exhaust fumes could be drawn
into the interior of the vehicle. Should it
be absolutely necessary to operate the
vehicle with the luggage lid open:
dRaise all windows and shut the slid-
ing/tilt sunroof
dMaximize the air volume of the air
conditioning, refer to page 88.c
Luggage strapsAttach the straps to the floor of the lug-
gage compartment to secure smaller
suitcases.
The luggage straps prevent objects
placed on them from slipping.
The fittings at the corners of the lug-
gage compartment provide you with a
convenient means of attaching luggage
nets
* and flexible straps for securing
suitcases and luggage.
360de302
394de302
Luggage compartment lid Luggage compartment

38
Unlock the convertible top storage
compartment with the handle in the rear
left side panel.
b
From ignition key position 1 or with
the door open: If the side windows are
closed, they move downward slightly
when the convertible top compartment
unlocking handle is operated.c
a
To prevent damage, it is not possi-
ble to unlock the convertible top com-
partment with the luggage compartment
open.cPosition the rear convertible top bow
vertically and hold in place. Raise the
convertible top compartment lid some-
what and unlock the catch lock by
pushing it to the right. Open the con-
vertible top compartment lid com-
pletely.
Lay the rear convertible top bow in the
convertible top compartment. Lift the
top at the front and also lay down
towards the rear.
In the process, make sure the rear win-
dow is laid down evenly and free of
folds. To prevent the rear window from
being scratched, a soft cloth should be
laid in the window fold. Close the convertible top compartment
lid by pressing down on both sides until
they are heard to engage securely.
When the convertible top compartment
lid is closed, the central locking system
is automatically unlocked, i.e., the lug-
gage compartment is no longer locked
and can be opened again.
a
If the convertible top compartment
lid is not properly closed, the luggage
compartment can not be opened to pre-
vent damage.
To prevent damage to the convertible
top due to the permanent presence of
moisture, never fold down the top while
wet (also refer to "Car care" starting on
page 136).c
36cde007
36cde008
36cde009
Convertible top operation

39
At a glanceControls Car careRepairsTechnicalDataIndex
Closing convertible topMove ignition key into position 1.
Unlock and open the convertible top
storage compartment. Lift out the top
by the side guide piece and the front
top frame.b
From ignition key position 1 or with
the door open: If the side windows are
closed, they move downward slightly
when the convertible top compartment
unlocking handle is operated. Move the
side windows into the desired position
or close them after closing the convert-
ible top.cPosition the rear top bow vertically.
Close the convertible top compartment
lid by pressing down on both sides until
they are heard to engage securely. Fold
down the top bow.
When the convertible top compartment
lid is closed, the central locking system
is automatically unlocked, i.e., the lug-
gage compartment is no longer locked
and can be opened again.
Pull the convertible top frame onto the
windshield frame with the locking han-
dle and lock the top by turning the han-
dle until it is heard to engage.
The rear convertible top bow is auto-
matically pressed onto the convertible
top compartment lid and closes water-
tight under tension.
b
If the convertible top or the rear
window begins to flutter at high speeds,
increase the air intake via the ventilation
control to prevent a vacuum from
resulting in the passenger compart-
ment.c
Fully automatic convertible top
operation
*
The fully automatic convertible top per-
fectly combines extremely simple, com-
fortable operation with reliable protec-
tion from the elements. Here are a few
tips to ensure that you have years of
pleasure with your convertible:
It is advisable to close the top when the
vehicle is parked. The closed top not
only protects the passenger compart-
ment from unforeseen weather-related
damage, it also provides a certain
degree of theft protection. Even with
the top closed, it is always advisable to
keep valuables locked in the luggage
compartment.
Do not mount roof racks on the convert-
ible top. Please contact your BMW
Retailer for suitable mounting equip-
ment and other accessories.
To prevent damage, do not operate the
top at temperatures below 325F (0
6
).
To protect the battery, it is advisable to
operate the top with the engine running
when possible.
36cde010Convertible top operation

48
Expectant mothers should always wear
their safety belts, taking care to position
the lap belt against the lower hips,
where it will not exert pressure against
the abdominal area.
Never attempt to modify the safety
belts.c
For care instructions refer to page 134.Never install a rear-facing child restraint
system in the front passenger's seat!
Never attempt to modify either the
safety belts or any child restraint sys-
tem.
Should the safety belts be damaged or
stretched in an accident, the entire belt
system - including safety belt tension-
ers - must be replaced and the anchor-
ing mounts inspected at a BMW
Retailer.
If the safety belt tensioner has been
activated, a distance of roughly 0.8 in
(20 mm) will remain between the safety
belt lock and the tensioner module.
Installing child restraintsTo install and secure child restraint sys-
tems, all rear safety belts (and the front
passenger's safety belt) are equipped
with a special locking mode.
A label with operating instructions is
attached to the belt next to the latch
plate.To lock the beltExtract the entire length of the belt from
the inertia reel mechanism. Allow the
reel to retract the belt somewhat and
engage the buckle, then tighten the belt
against the child restraint system. The
retraction mechanism is now locked.
Always observe the installation instruc-
tions provided by the manufacturer of
the child restraint system.360us125
Safety belts Child restraint system

49
At a glanceControls Car careRepairsTechnicalDataIndex
To release the beltRelease the buckle, remove the child
restraint device and allow the inertia
reel to retract the belt completely.b
Please also make this information
available to your passengers and urge
them to observe the instructions for
safety belt use.c
For care instructions refer to page 134.All passengers, and especially children,
should use a restraint device when
riding in the car.
Infants or small children should never
be permitted to ride on a passenger's
lap.
Children should always sit in the rear
seat and use, depending on age, either
a child restraint system or the safety
belts installed in the vehicle. Accident
statistics have shown that children are
safer when properly restrained in the
rear seats than when riding in the front.
Infants and toddlers should be secured
with a child restraint system appropri-
ate for their size.
Children of six years and older should
wear safety belts.Commercially available child seats
complying with legal standards are
designed to be secured using either a
lap belt or a combined lap-shoulder
belt. Because improperly installed
restraint systems can increase the risk
of injury to children, we strongly urge
you to carefully read and follow the
instructions supplied with the system.
Should the child restraint system of your
choice require the use of a securing or
tether strap, note that three anchoring
points (arrows) have been provided for
mounting it in your vehicle.
Ask your BMW Retailer to perform the
necessary installation work.
360us126
BMW Sedan/Coupe
Child restraint system Installing child seats

50
a
Before install-
ing any child re-
straint device or
child seat, please
read the follow-
ing:
Never install a rearward-facing child
restraint system in the front passenger
seat of this car.
Your car is equipped with an airbag
supplemental restraint system for the
front passenger. Because the backrest
on any rear-facing child restraint sys-
tem (of the kind designed for infants
under 1 year and 20 lbs.) would be
within the airbag's deployment range,
you should never mount such a device
in the front passenger seat, as the
impact of the airbag against the child
restraint's backrest could lead to seri-
ous or fatal injuries.
If it is necessary for a child (not an
infant) to ride in the front seat, certain precautions should be taken. First,
move the passenger seat as far away
from the dashboard as possible. This
important precaution is intended to
maximize the distance between the air-
bag and the child. Older children should
be tightly secured with the safety belt.
Younger children should be secured in
an appropriate forward-facing child
restraint system that has first been
properly secured with a safety belt.
We strongly urge you to carefully read
and observe the instructions for instal-
lation and use provided by the child re-
straint's manufacturer whenever you
use such a device.
Always ensure that all occupants (of
all ages) remain properly and securely
restrained at all times.c
All rear seating positions in your vehicle
meet the recommendations of SAE
J1819, an industry recommended prac-
tice for securing child restraint systems
in motor vehicles.1 Front airbag system, consisting of
driver and passenger airbag
2 Side airbags
*
Protective effectThe front airbags provide additional
protection for the front-seat occupants
in the event of a severe frontal collision
in which the protection afforded by the
safety belts alone would no longer be
sufficient. The side airbags help protect
the front seat occupants in a severe
side impact.360de305
Installing child seats Airbags