BMW 2004 745i Sedan Manual Do Proprietário

 95

The Flat Tire Monitor keeps track of the 
inflation pressures in the four fitted tires as 
you drive. The system provides an alert 
whenever the inflation pressure of one tire 
drops significantly in relation to the pres-
sure of another tire. 

The check of the tire inflation pressure is 
based on monitoring the relative speeds of 
the wheels. A flat tire is detected and 
reported on the basis of a deviation in cer-
tain speed ratios.

So that the Flat Tire Monitor can learn the 
correct inflation pressure, please perform 
the following:

1.

Check the inflation pressures in all tires

2.

Compare with the inflation pressure 
table on page 

 and correct if neces-

sary

3.

Initialize the system.

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.

<

In the following situations, on the other 
hand, there can be delays in detecting tire 
pressure losses, and even system failure:

>

When you are driving on snow-covered 
or slippery road surfaces

>

In the case of performance-oriented 
driving: slip on the drive wheels, high 
lateral acceleration

>

False alarms and undetected loss of 
pressure may occur when you are driv-
ing with snow chains fitted.

Perform the initialization immediately 
after correcting the inflation pressure, 

changing a tire or changing a wheel or all 
wheels. A drive is necessary for this pur-
pose.

<

1.

Start the engine, but do not drive off

2.

Select "FTM" from the "Settings" menu 
and confirm. The initialization menu 
appears 

3.

Select "SET" and confirm

4.

Drive off.

Status: "FTM is being initialized" is dis-
played.

It takes at least 10 minutes before the Flat 
Tire Monitor can detect and report a flat 
tire.

When driving with snow chains, do 
not initialize the system.

<

 

Select

and confirm to exit from the 

menu.

Online Edition for Part No. 01 41 0 157 670 - © 08/03 BMW AG