1998 BMW 750IL SEDAN climate control

104n
Automatic climate controlResidual heat mode
The heat which is stored in
the engine is utilized for
heating of the interior when the engine
has been switched off (while waiting at
a railroad crossing, for instance).
In ignition key position 1, you can alter
the settings of the automatic climate
control. In ignition key position 0, the
system automatically directs heated air
to the windshield, side windows and
footwells.
This function may be activated
when the outside temperature is
below approx. 597 (156), the engine
is at operating temperature, and the
battery is adequately charged.<
Draft-free ventilationYou can adjust the vent outlets for the
upper body area for individual selection
of air-flow rates and directions:
You can open and close the ventilation
outlets with infinitely-variable adjust-
ments and direct them up or down with
the rotary dials 1. In the closed position,
air exits only at the upper center of the
instrument panel. You can use rotary di-
als 2 to adjust the flow direction from
side to side.
Set the outlets so that the air flows past
you and is not directed straight at you.380de051
Rotary dial 3 allows you to temper the
air flow from these outlets by adding
heat or cooling as desired:
>Turn toward blue – colder
>Turn toward red – warmer
To adjust the rear compartment vents:
Use the rotary dial on the left to close or
open the vent for any desired air flow.
You can adjust the temperature with the
right rotary dial in the same manner as
the adjustment for the front ventilation
outlets.
Use the levers at the centers of the vent
outlets to control the direction of the
emerging air.

105n
RepairsIndexOverview Controls Car care Technology Data
Automatic climate control Rear passenger-area air conditioning
*
Microfilter, activated-charcoal
filterThe microfilter removes dust and pollen
from the incoming air. The activated-
charcoal filter provides additional pro-
tection by filtering gaseous pollutants
from the outside air. Your BMW center
replaces the filter assemblies as a stan-
dard part of your scheduled mainte-
nance. A substantial reduction in air
flow indicates that the filter needs to be
replaced early.
1 Display for temperature and air
supply
2 Temperature/
Switching the system on
3 Air supply/
Switching the system on
380de636
2 TemperatureThe rear passengers can adjust the
temperature for the ventilation outlets
which are positioned above this as de-
sired. The figures in the display provide
a general indication of interior tempera-
ture. We recommend 707 (226) as a
comfortable setting, whether the air
conditioner is operating or not. When
you start the vehicle, the system en-
sures that the selected temperature is
achieved as quickly as possible. It then
maintains this temperature, regardless
of the season.3 Air supplyWhen you press "–" in the lowest
blower speed, all of the displays are
canceled: This setting deactivates the
blower and shuts off the air supply. You
can then switch the rear air conditioner
back on by pressing the button again.
The air flow in the rear will vary accord-
ing to the settings selected at the front.

107n
RepairsIndexOverview Controls Car care Technology Data
Roller sun blind
*
Independent ventilation system
To actuate, press the button briefly after
ignition key position 1.Roller sun blinds for the rear side
windows
*
Use the strap to extract the blinds, then
suspend them in the attachment pro-
vided.380de624
This system uses the automatic climate
control system blower to ventilate the
passenger compartment and reduce in-
terior temperatures while the vehicle is
parked.
The independent ventilation system is
operated via the Multi-Information Dis-
play (MID) or the onboard computer.
Refer to the separate Owner's Manual.
You can preselect the activation time
for a 30-minute ventilation cycle, or you
can switch the system on and off manu-
ally with the ignition key at position 1.
Since the system uses a substantial
amount of electrical current, you should
refrain from activating it twice in suc-
cession without allowing the battery to
be recharged in normal operation be-
tween use.
When a preselected activation time is
set, the independent ventilation system
is operational at outside temperatures
above 607 (166), or by direct switch
activation. It cannot be switched on
when the vehicle is moving.
The air emerges via the vent outlets for
the upper body. Therefore, the vents
must be open for the system to operate.

153n
RepairsIndexOverview Controls Car care Technology Data
Caring for your carWindow careWater and dirt-repelling windshield (re-
fer also to page 191).
The effectiveness of the coating is not
impaired by the wax used in car washes
or by windshield-washer additives.
Depending on the frequency of use of
the windshield wipers as well as on en-
vironmental factors, the coating of the
windshield is subject to natural wear.
As a result, the beneficial characteris-
tics of the coating gradually diminish.
After approx. 12,400 to 15,500 miles
(approx. 20,000 to 25,000 km), the
windshield begins to resemble more
and more a standard windshield.
The coating can be renewed by your
BMW center.
You can use window and glass cleaner
to clean interior window surfaces and
mirrors without streaking. Never use
polishing pastes or abrasive (quartz)
cleansers on mirror lenses.
Break-resistant security glassThe glass used for the side windows is
designed to provide resistance to
breakage and protection against van-
dalism. These break-resistant windows
contain several layers of a transparent
plastic film which is sandwiched be-
tween the inner and outer glass panes.
There is also one additional plastic film
on the inside of the glass pane (facing
the passenger compartment). This film
prevents shards of glass from spread-
ing into the passenger compartment if
the window is shattered.
Please observe the following pre-
cautions pertaining to this film
when caring for the interior glass sur-
faces:
>The film is not scratch-resistant. For
this reason, do not touch the glass
with sharp objects which could dam-
age the film
>Clean the glass with clean water. If
necessary, you may also use regular
household window cleaners. Wipe
the cleaner off immediately.
Do not use window cleaners contain-
ing solvents or abrasives. These
cleaners can mar the film
>Do not apply any self-adhering de-
cals, adhesive labels or other stickers
with tape to the inner window surface
>Do not apply colored films to the in-
side surfaces of the side windows
>If the windows are fogged or iced
over in cold or humid climates, do not
use an ice scraper or ice-removing
sprays to clean them. Start the en-
gine and refer to the instructions for
defrosting the door windows.<

Everything from A to ZAABS125
Accessories6
Activated-charcoal filter105
Active seat48
Adaptive Transmission
Control (ATC)63
Adding engine oil143
Adding washer fluid142
Adjust the backrest46
Adjusting steering wheel49
Air distribution102
Air flow103
Air jets100
Air pressure132
Airbags55
Alarm system40
Deactivating in an
emergency41
Antenna diversity186
Antifreeze146
Antifreeze, radiator128, 146
Antilock Brake System
(ABS)125
Anti-theft alarm system
32,40
Approved gross vehicle
weight196
Aquaplaning123,132
Armrest111
ASC+T (Automatic Stability
Control plus Traction)92Ashtray114
AUC (Automatic recirculated-
air control)103
Audio System78
Automatic car washes150
Automatic climate
control100
Automatic climate control,
removing window
condensation102
Automatic recirculated-air
control (AUC)103
Automatic Soft-Close
feature38
Automatic Stability Control
plus Traction (ASC+T)92
Automatic steering wheel
adjustment49
Automatic transmission62
Automatic transmission with
Steptronic65
Automatic windshield
washer69
Average fuel consumption 85
Average speed86
Axle loads196
BBackup lamps, bulb
replacement166
Battery173,198
Battery capacity198Battery change, radio remote
control168
Battery charge current20
Battery, discharged179
Battery, removal and
installation175
Belts54
Beverage holders113
Blower103
Body-cavity protectant151
Brake faults128
Brake fluid147
Brake hydraulic system20
Brake lamps, bulb
replacement166
Brakes126
Break-in procedure122
Break-resistant security
glass, care153
Bulb replacement163
CCar jack170
Car Memory53
Car radio reception131, 186
Car telephone113
Car wash150
Care, exterior152
Care, interior154
Caring for the vehicle
finish152
Caring for your car150Catalytic converter124
Cellular phone131
Center (high-mount) brake
lamp166
Central locking system32
Central locking system,
button36
Changing a wheel170
Charge indicator lamp20
Charging the battery174
Check Control75
CHECK key75
Checking the engine oil143
Checking tire pressure26
Child restraints57
Childproof door locks58
Cigarette lighter115
Clock,
refer to Digital clock79
Code88
Refer to the Radio Owner's
Manuel
Codes, tires134
Coin tray113
Cold start60
Comfort seats47
Connecting a car vacuum
cleaner115
Consumption display73
Contour seat48