BMW 745i Manual Do Proprietário

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Technology for comfort, convenience and safety
98
Flat Tire Monitor*  
The concept 
The Flat Tire Monitor keeps track of the 
inflation pressures in your tires as you 
drive. The system provides an alert when-
ever the inflation pressure drops signifi-
cantly below the specified pressure in one 
or more tires. 
In order for the Flat Tire Monitor to 'learn' 
the correct tire inflation pressure, check the 
inflation pressure in all tires against the 
inflation pressure table on page 
 and 
make corrections as necessary. Then pro-
ceed to initialize the system.
This symbol will appear in the 
Check Control to inform you that 
the inflation pressure of a tire has 
fallen significantly. A text message appears 
at the same time.
Please take note of the additional informa-
tion in the Control Display.
You can find more information on the 
Check Control starting on page 
The Flat Tire Monitor cannot indicate 
sudden severe tire damage caused 
by outside factors and does not detect a 
natural, even pressure drop in all four 
tires.
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Initializing the system 
1.
Switch ignition on, do not start the 
engine 
2.
Select "RPA" from the "Settings" menu 
and confirm your selection. The initial-
ization menu appears. 
"YES" 
Select and confirm. The Flat Tire Monitor 
starts an automatic 'learning' process as 
the car is driven, and memorizes these ref-
erence pressures. This one-off learning 
takes at least 10 minutes, after which the 
Flat Tire Monitor is able to detect and indi-
cate a flat tire. 
Repeat this process after any changes in 
tire inflation pressure, tire rotation or 
replacement. 
"NO" 
Select and confirm to return to the "Set-
tings" menu. 
Flat tire 
The symbol will light up red, accompanied 
by a status message in the Check Control. 
>
Vehicles with standard tires: 
If this occurs, reduce vehicle speed 
immediately and stop the vehicle. Avoid 
hard and sudden steering and braking 
maneuvers. Replace the defective tire 
>
Vehicles with run-flat tires: 
If this occurs, carefully but quickly 
reduce vehicle speed to below 50 mph 
(80 km/h). Avoid hard and sudden 
steering and braking maneuvers. 
Additional information on run-flat tires 
is provided on page 
Please take note of the additional informa-
tion in the Control Display.
Online Edition for Part No. 01 41 0 157 197 - © 11/02 BMW AG