1998 BMW CONVERTIBLE service interval

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

Controls and features MaintenanceAt a glanceControls Car care Repairs Technical Data Index

19
1 Fuel gauge with low-fuel
warning lamp 64
2 Indicator lamp for turn signals 20
3 Speedometer
4 Indicator and warning lamps for

d

Battery charge current 20

d

High beams 20

d

Engine oil pressure 20
5 Tachometer 63
Energy control 63
6 Coolant temperature gauge 64
7 Indicator and warning lamps for

d

Brake pad wear 20

d

Brake system hydraulics 21

d

Parking brake 21

d

Airbag 50
8 Indicator lamp for ASC+T 20
9 Indicator and warning lamps for

d

Automatic transmission

*
20

d

Warning lamp for Check Control

*

71

d

Please fasten seat belts

*
21

d

ABS 20
10 Trip odometer 63
11 Service Interval Display 64
12 Odometer 6313 Indicator lamps for

d

Foglamps

*
20

d

Emissions-related systems
indicator 21

d

Rollover protection system

*
21
14 Trip odometer reset button 63

Instrument cluster

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

53
At a glanceControls Car careRepairsTechnicalDataIndex
Following an unforeseen, automatic
extension, the rollover protection sys-
tem can be lowered again.
To do this, remove the screwdriver han-
dle and the special tool (stored on the
socket wrench) from the onboard tool
kit and push them together.
dPull out the head restraint upward.
dRemove the protective cap upward
from the protective bar.dPush the special tool into the guide
of the click-and-pawl mechanism as
far as possible (handle rests on the
backrest) and hold in place.
dGently press down the protective bar
until the special tool is loose.
dPull out the special tool and press
down the protective bar completely
until it audibly engages.
dRemount the protective cap on the
protective bar and push on Þrmly.
dPush in the head restraint again.Follow the same procedure for the sec-
ond protective bar.
Have the rollover protection system
checked by a BMW Retailer.
a
The opened convertible top can not
be closed with the rollover protection
system extended.c
Notes on safetyNo changes should be made to the indi-
vidual components of the rollover pro-
tection system or to its wiring.
All work on the rollover protection sys-
tem must be carried out by a BMW
Retailer.
Work carried out incorrectly may lead to
the failure or an accidental triggering of
the system.
To check the system and to ensure its
long-term operation, it is imperative that
you observe the maintenance intervals
of the Service Interval Display. The roll-
over protection system must be in-
spected every 2 years at the latest by a
BMW Retailer.
36cde016
36cde017
Rollover protection system* Ð Convertible

64
When you switch on the ignition, the
indicator lamp comes on briefly to indi-
cate that the system is operational.
If the indicator lamp comes on and
stays on, there are approx. 2.1 gallons
(8 liters) of fuel in the tank.
Tank volume: Page 166.
If the tilt of the vehicle varies, e.g.,
when you are driving in mountainous
areas, this may cause the needle to
fluctuate slightly.
a
Please refuel early, as driving
to the last drop of fuel can result in
damage to the engine and/or catalytic
converter.c
BlueThe engine is still cold. Drive at moder-
ate engine and vehicle speeds.RedIndicator lamp comes on, the warning
"COOLANT TEMPERATURE" appears
in Check Control
*: engine overheated.
Switch off the engine immediately and
allow it to cool down.
Between the blue and red sectorsNormal operating range. It is not un-
usual for the needle to rise as far as the
edge of the red sector in response to
high outside temperatures or severe
operating conditions.
Checking coolant level: Page 127.
Green lampsThe number of illuminated lamps
decreases as the time for your next
maintenance visit approaches.Yellow lamp This field appears together with
OILSERVICE or INSPECTION.
Maintenance is due. Please contact
your BMW Retailer for an appointment.Red lampMaintenance overdue.
F
R
12
UNLEADED GASOLINE
ONLY
360us032
360de007
360us009
Fuel gauge Coolant temperature Service Interval Display

65
At a glanceControls Car careRepairsTechnicalDataIndex
b
Have your BMW Retailer carry out
the maintenance and repair. Your BMW
Retailer is always informed on the latest
maintenance work and repair tech-
niques and equipped with the required
special tools. In addition, the testing of
parts known from experience to be sub-
ject to wear is a permanent part of the
maintenance specifications.c
Service Interval Display

10 3
At a glanceControlsCar careRepairsTechnicalDataIndex
ABS enhances active safety by helping
to prevent the wheels from locking under
braking. When the front wheels slide, the
driver loses steering control over the
vehicle. Traction loss at the rear wheels
can cause the rear end to break into
uncontrolled oversteer.
ABS is designed to meet two essential
requirements during every application:
dto help provide vehicle stability on all
types of road surface (asphalt,
cement, dirt, moisture, snow and ice).
dto help to retain steering and maneu-
vering capability under the same con-
ditions.
However, certain important consider-
ations must be borne in mind in connec-
tion with these requirements:
Not even ABS can suspend the normal
laws of physics. ABS alone can not pre-
vent accidents when the brakes are
applied without an adequate safety
interval between vehicles, when the car
reaches excessive rates of lateral accel-
eration in curves, or if aquaplaning
occurs. Responsibility for these types of
situations remains in the hands (and feet)
of the driver. You should never allow the
added safety of ABS to lull you into a
false sense of security, or mislead you
into taking increased risks that could
affect your own safety and that of others.
Driving with ABSThe yellow ABS warning in the instru-
ment panel goes out as soon as the
engine is started.
The system becomes operative once the
vehicle exceeds a speed of 5 mph
(8 km/h). The ABS is deactivated when-
ever the vehicle's speed drops below
approx. 2 mph (3 km/h). This means that
the wheels can lock in the Þnal phase of
a braking action - a factor of no signiÞ-
cance in actual practice.
The ABS system closed-loop control cir-
cuit cycles in fractions of a second. A
pulsation at the brake pedal indicates to
the driver that ABS is active, that is, that
the car is within its maximum braking
range. In addition, the audible pulsation
that accompanies the control operation
calls your attention to the reduced trac-
tion between tires and road surface
(marginal adhesion), and reminds you
that the vehicle's speed should be
reduced to adapt to road conditions.On road surfaces featuring a loose top
layer on a Þrmer substratum, e.g., on
gravel or snow, the braking distances
with ABS may be longer than with the
wheels locked. However, ABS continues
to provide enhanced vehicle and steer-
ing control under these conditions.
a
To ensure that the system remains
completely operational, never modify the
ABS. Service procedures on ABS are to
be performed by authorized technicians
only.c
ABS may fail to function with maximum
efÞciency when tires of different sizes
are mounted (e.g., winter tires/spare tire;
remount the correct tires at all wheels as
soon as possible).
In the event of a fault, the ABS warning
lamp in the instrument cluster lights up,
refer to page 18. The braking system
then reverts to conventional operation as
on a vehicle without ABS. However,
have the brake system checked by your
BMW Retailer as soon as possible. To
prevent undetected defects and cumu-
lative faults from adversely affecting the
brake system, refer any problems to
your authorized BMW Retailer at the
earliest opportunity.
Antilock Brake System (ABS)

13 0
The BMW Maintenance System has
been designed as a reliable means of
providing the customer with maximum
vehicle safety and reliability with mini-
mum complication and expense.
Please remember that regular periodic
maintenance plays an essential part in
ensuring continued vehicle security. It
also helps maintain the resale value of
the vehicle.
Service Interval DisplayAdvanced technology is employed to
calculate the optimal maintenance
intervals, which are then indicated in
the Service Interval Display. While con-
ventional maintenance systems rely on
mileage alone to determine when ser-
vice is due, the BMW Maintenance Sys-
tem reflects the actual conditions under
which the vehicle is operated, because
mileage is not simply mileage:
From the point of view of maintenance,
62,000 miles (100,000 km) accumulated
in short-distance driving are not the
equivalent of the same distance cov-
ered in long-distance highway travel.
The BMW Maintenance System
includes the Engine Oil Service as well
as Inspections I and II.
Determining the maintenance intervals
according to the actual loads on the car
covers every kind of operating situation.
However, drivers who cover only
extremely short distances - substantially
less than 6,200 miles (10,000 km) annu-
ally - should have the engine oil changed
at least once a year, as it continues to
age whether or not the car is used on a
regular basis.
Service and Warranty Information
bookletPlease refer to the Service and War-
ranty Information booklet for additional
information on maintenance intervals
and procedures.
Depending on operating conditions, as
a precaution against rust it may be a
good idea to have the body checked for
stone damage and chips at the same
time.
Please ensure that all maintenance
operations are entered in the Service
and Warranty Information booklet upon
completion. These entries will consti-
tute your proof that the vehicle has
received regular maintenance. They
are also required for warranty claims.b
Have your BMW Retailer carry out
the maintenance and repair. Your BMW
Retailer is always informed on the latest
maintenance work and repair tech-
niques and equipped with the required
special tools. In addition, the testing of
parts known from experience to be sub-
ject to wear is a permanent part of the
maintenance specifications.c
360us009The BMW Maintenance System