maintenance BMW 740I 1998 User Guide

151n
RepairsIndexOverview Controls Car care Technology Data
Caring for your carExterior finishTo provide effective corrosion protec-
tion, multilayer paintwork is applied at
the factory. Cataphoretic immersion
priming techniques are supplemented
using special body-cavity protectants,
with the application of specially-devel-
oped and extensively tested materials.
A layer of flexible PVC is first applied to
the undercarriage. Following this, a
comprehensive undercoating treatment
with a wax-based protectant is applied.
Regular maintenance makes an impor-
tant contribution to maintaining the
safety and value of your vehicle.
Increasing awareness of the effects of
harmful environmental factors on a ve-
hicle's exterior finish have led paint and
vehicle manufacturers to initiate pro-
grams designed to further improve the
durability of their finishes. Despite this,
environmental factors that occur locally
or regionally can have negative effects
on the finish of your vehicle. These
should guide you in determining the fre-
quency and extent of your efforts to
maintain the vehicle finish.Depending upon material and type of
impact (perforation of paint layer), phys-
ical stresses from sand, road salt,
gravel, etc., can cause corrosion to
start extending beneath the finish, start-
ing at the point of impact.
Road dirt, tar spots, dead insects, ani-
mal droppings (strong alkali effect) and
tree excretions (resins and pollen) all
contain substances capable of causing
damage when allowed to remain on the
finish of your car for any period of time
(spots, etching, flaking, separation in
the top coat).
In industrial areas, deposits of flue dust,
lime, oily soot, precipitation containing
sulfur-dioxide (acid rain) and other envi-
ronmental pollutants will damage the
car's finish unless adequate care is pro-
vided – even though this is generally
limited to the outside horizontal sur-
faces.In coastal regions, high levels of atmo-
spheric salt and humidity promote cor-
rosion.
In tropical zones, temperatures of over
1057 (406) in the shade prevail, in
addition to heavy ultraviolet radiation
and high humidity. Under those circum-
stances, light exterior finishes reach
temperatures of up to 1757 (806) and
dark finishes up to 2507 (1206).

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
161n
RepairsIndexOverview Controls Car care Technology Data
Replacement procedures:
Onboard tool kit162
Windshield wiper blades162
Lamps and bulbs163
Remote control168
Changing tires170
Battery173
Fuses176
In case of electrical
malfunction:
Fuel filler door178
Sliding/Tilt sunroof178
Assistance, giving and
receiving:
Jump-starting179
Towing the vehicle180

174n
BatteryDo not short circuit the battery termi-
nals. This creates a risk of personal in-
jury from high-voltage sparks.
A highly-explosive gas is
generated when the battery is
charged.
If you happen to get acid in
your eyes, rinse thoroughly for
15 minutes with clear water.
Consult a physician immediately. If you
get acid spray on your skin or clothing,
rinse with plenty of water. If electrolyte
is accidentally ingested, consult a phy-
sician immediately.
In order to protect the battery
case from ultraviolet radiation,
do not place it in direct sunlight.
A discharged battery can freeze. Store
the battery in areas where temperature
remains above freezing.Car careThe battery is completely maintenance-
free, that is, the original electrolyte will
normally last for the service life of the
battery.
Charge condition – BMW 740i/LYou can read the charge condition of
the battery with the "Magic Eye" (a hy-
drometer) (not released at this time):
>Green: Adequate charge
>Black: Not charged adequately. The
battery must be recharged. Please
contact your BMW center
>Yellow: Replace the battery.380de655
Charging the batteryCharge the battery in the vehicle only
when the engine is off. Charge the bat-
tery using the supplementary positive
terminal and ground (terminal) in the en-
gine compartment (refer to "Jump-start-
ing" on page 179).
On the BMW 750iL, there is an auto-
matic switch between the two batteries
during charging.
Before performing any work on
the electrical system, disconnect
the cable from the negative terminal. If
you do not, short circuits can create the
risk of fire or personal injury.
If a jump start is necessary, connect the
cables only to the auxiliary terminal for
jump starting and a ground in the en-
gine compartment in order to avoid
damage to the batteries (refer to
"Jump-starting" on page 179).<

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
183n
RepairsIndexOverview Controls Car care Technology Data
Airbags184
Adaptive Transmission Control
(ATC ) 184
Automatic Stability Control plus
Traction (ASC+T)/Dynamic Sta-
bility Control (DSC) 185
Radio reception186
BMW Active Seat 186
Safety belt tensioner187
DSP sound system 187
Rearview mirror with automatic
dimmer188
Tire Pressure Control (RDC ) 189
Xenon lamps 190
Water and dirt repelling
windshield 191

Overview
Controls and features
Operation, care
and maintenance
Technical data
Index Advanced technology
193n
RepairsIndexOverview Controls Car care Technology Data
Owner service procedures
Engine specifications194
Dimensions195
Weights196
Capacities197
Electrical system198
Drive belts198

Initial overview
Controls and features Operation, care
and maintenance
Owner service procedures
Technical dataIndex
Advanced technology
201
n
Repairs
Index
Overview
Controls
Car care
Technology
Data
Everything from A to Z 202
Owner service procedures from A to Z 207

Everything from A to ZHeadlamp flasher68
Headlamp washer
system142
Headlamp washers69
Heated seats106
Heated steering wheel106
Heating and ventilation100
Heating during a stop104
Height195
HiFi system187
High beam headlamps,
bulb replacement164
High beams68
Hood release137
Horn23IIce warning72
Ignition key30
Ignition switch59
Independent ventilation
system107
Indicator lamps20
Inflation pressures26,132
INSPECTION74
Instrument cluster18
Instrument lighting96
Integrated Universal Remote
Control108
Interior door handles,
lighted36,96
Interior lamps32,97Interior lamps, bulb
replacement167
Interior lamps,
radio remote control34
Interior motion sensor40
Interior rearview mirror,
automatic dimming50
Intermittent wipe switch68
JJump starting179KKey Memory53
Keys30
Kickdown63,66LLashing eyes39,118
Leather care154
Length195
Level control system148
License plate lamps, bulb
replacement166
Light switch96
Lighted exterior door handles
32,33
Lighted interior door handles
36,96
LIGHTS ON warning96
Limit87
Loading118Load-securing devices118
Locking and unlocking the
doors32
Locks, care128
Low beam headlamps, bulb
replacement164
Low beams96
Low-fuel warning lamp73
Lug bolts171
Luggage compartment 37, 39
Nets39
Luggage compartment
lamps, bulb
replacement167
Luggage compartment lid 37
Luggage compartment lid,
Automatic Soft-Close38
Luggage compartment lid,
manual operation37
Luggage compartment
nets39
Luggage compartment,
emergency release37
Luggage compartment,
locking separately37
Luggage compartment, radio
remote control34
Luggage rack118
Luggage straps39
Lumbar support47
MMaintenance74,149
Malfunction displays75
Manually controlled
recirculated-air103
Master key30
Memory51,53
MFL (Multi-function steering
wheel)23
Microfilter105
MID (Multi-Information
Display)78
Mirror defrosting50
Mirror memory51
Mirrors50
Modifications,
technical6,157
Multi-function armrest112
Multi-function steering wheel
(MFL)23
Multi-Information Display
(MID)78NNew transmitter, radio
remote control168
Nozzles100OOBD connector158
Odometer72
Oil additives143

Repairs
Index
Overview
Controls
Car care
Technology
Data
Owner service procedures from A to Z207 n
A
Adding brake fluid 147
Adding engine coolant 146
Adding engine oil 143
Adding fluid, power steering 148
Air pressure 26
B
Backup lamps, bulb
replacement 166
Battery change, radio remote control 168
Battery, checking charge condition 174
Battery, discharged 179
Brake lamps, bulb replacement 166
Brakes, brake faults 128
Bulb replacement 163
C
Changing a wheel 170
Charging the battery 174
Check Control 75
Checking the engine oil 143
Checking tire pressure 26
D
Defrosting, windows102
Difficult steering 130
Doors, manual operation 32
E
Electrical accessories,
failure 176
Electrical fault fuel filler door 178
Sliding/Tilt sunroof 178
Emergency release Doors 32
Fuel filler door 178
Luggage compartment
lid 37
Sliding/Tilt sunroof 178
Engine oil specifications 144
F
Failure messages75
Filling the windshield washer fluid reservoir 142
First-aid kit 24
Fittings, tow-starting and towing 180
Fog lamp,
replace the bulb 165
Footwell lamps, bulb replacement 167 Fuel filler door,
manual release after
electrical fault 178
Fuses, replacing 176
G
Glove compartment lamp,
bulb replacement 167
H
Hazard warning flashers 24
Hazard warning triangle 24
High beam headlamps, bulb replacement 164,165
Hood release 137
I
Indicator lamps 20
Interior lamps, bulb replacement 167
Interior motion sensor, deactivation 41
J
Jump starting 179
L
License plate lamps, bulb
replacement 166
Low beam headlamps, bulb
replacement 164 Luggage compartment
lamps, bulb
replacement 167
Luggage compartment lid, emergency release 37
M
Maintenance74,149
Malfunction displays 75
N
New transmitter, radio re-
mote control 168
O
Oil level check 143
Oil specifications 144
Onboard tool kit 162
P
Power steering,
adding fluid 148
Pressure, tires 26
R
Radio remote control,
battery change 168
Radio remote control, new transmitter 168
Rear lamp assembly 166
Removing condensation, windows 102