1998 BMW 740I coolant reservoir

128n
Brake system Winter operationBrake fluid level
The warning lamp for the brake
hydraulic system comes on or
the message "Check Brake
Fluid" appears in the Check
Control:
The brake fluid level is too low in the
reservoir. Refer to page 147.
If the brake fluid level is too low and
brake pedal travel has become notice-
ably longer, there may be a defect in
one of the brake system's hydraulic cir-
cuits.
The remaining circuit continues to pro-
vide adequate brake-system perfor-
mance.
Proceed to the nearest authorized
BMW center. Higher brake appli-
cation pressure may be necessary un-
der these conditions, and brake pedal
travel may be significantly longer.
Please remember to adapt your driving
style accordingly.<
The warning lamp also comes on with
the "Check Brake Pads" message in the
Check Control.
Brake padsThe message "Check Brake Pads" ap-
pears in the Check Control:
The brake pads have reached their min-
imum pad thickness. Proceed to the
nearest authorized BMW center as
soon as possible to have the pads re-
placed.
We recommend the use of original
BMW brake pads and compo-
nents, otherwise driving safety can be
impaired.<
The onset of winter is often accompa-
nied by rapid changes in weather. Ad-
aptations in driving style should be ac-
companied by preparations on the
vehicle itself to ensure that your vehicle
operation through the winter remains
safe and trouble-free.CoolantBe sure that the coolant mixture is kept
at the year-round ratio of 50:50 (water
and antifreeze/corrosion protection).
This mixture provides protection
against freezing down to approx. –347
(–376). Replace the coolant every four
years.LocksBMW door lock deicer can be used to
free the locks if they are frozen. This
deicer also contains lubricant.
After using deicer, treatment with BMW
lock barrel grease is recommended.

139n
RepairsIndexOverview Controls Car care Technology Data
Engine compartment – BMW 740i/L1 Brake fluid reservoir147
2 Power steering fluid reservoir/
Level control system148
3 Auxiliary terminal for jump
starting179
4 Engine oil dipstick143
5 Engine oil filler neck143
6 Coolant expansion tank146
7 Reservoir for headlamp
and windshield washer system142
8 Fuse box176

141n
RepairsIndexOverview Controls Car care Technology Data
Engine compartment – BMW 750iL1 Brake fluid reservoir147
2 Power steering fluid reservoir/
Level control system148
3 Auxiliary terminal for jump
starting179
4 Engine oil filler neck143
5 Coolant expansion tank146
6 Engine oil dipstick143
7 Reservoir for headlamp
and windshield washer system142
8 Fuse box176

Everything from A to ZStarting assistance179
Starting the engine59
Steering130
Steering lock59
Steering wheel adjustment,
automatic49
Steering wheel lock59
Steering wheel memory51
Steering wheel, heated106
Steptronic65
Stopping the vehicle60
Storage facilities113
Sun visors51
Symbols4,173TTachometer72
Tail lamps166
Tail lamps,
bulb replacement166
Tank capacity197
Technical modifications
6,157
Telephone
Refer to Car telephone 131
Telephone hookup113
Temperature adjustment 103
Temperature display, engine
coolant74
Temperature display,
outside temperature72
Third brake lamp166Tilt alarm41
Tire code134
Tire damage132
Tire failure170
Tire inflation pressure 26, 132
Tire Pressure Control
(RDC)94
Tire replacement133
Tire tread132
Tires, specifications136
Tools162
Topping up the windshield/
washer fluid reservoir142
Torque194
Towing eyes180
Towing the vehicle180
Tow-starting180
Track circle195
Transmission62,65
Tread depth, tires132
Trip odometer72
Trunk lid, refer to luggage
compartment lid37
Turn signal22,68
Turn signals, bulb
replacement165,166
Turning circle195
UUniversal Remote
Control108
Used batteries175
VVanity mirrors51
Vehicle battery173
Vehicle identification148
Vehicle Identification
Number148
Vehicle storage156
Ventilation outlet,
ventilation100
Ventilation, draft-free104
Voice input23WWarning lamp "Please fasten
safety belts"21
Warning lamps20
Warnings75
Washer system68
Washing your car150
Water on the roads
Flooding123
Waxing, finish152
Weights196
Wheel lug wrench171
Wheel rims134
Wheelbase195
Wheels and tires134,136
Width195
Windows, convenience
operating mode32
Windows, radio remote
control33
Windows,demisting102Windshield washer
Reservoir capacity197
Windshield washer nozzle
adjustment142
Windshield wiper blades,
replacing162
Windshield wipers68
Windshield, defrosting69
Winter operation128
Winter tires135
Wiper blades, replacing162
Wipers68
Work in the engine
compartment137
XXenon lamps96,164,190

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