BMW 2009 Z4 sDrive30i Manual Do Proprietário

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Technology for driving comfort and safety
82
3.
In the event of complete tire pressure loss, 
0 psi/0 kPa, you can estimate the possible 
distance for continued driving on the basis 
of the following guidelines:
>
With a light load: 
1 person without luggage: 
approx. 155 miles/250 km
>
With a medium load: 
1 person, cargo bay full, or 2 people 
without luggage:
 approx. 90 miles/150 km
>
With a full load: 
2 people, cargo bay full:
 approx. 30 miles/50 km
Drive cautiously and do not exceed a 
speed of 50 mph or 80 km/h, otherwise 
there is a risk of an accident. In the event of 
pressure loss, vehicle handling changes. This 
includes reduced tracking stability in braking, 
extended braking distance and altered natural 
steering characteristics. 
If unusual vibration or loud noises occur during 
the journey, this may be an indication that the 
damaged tire has finally failed. Reduce your 
speed and pull over as soon as possible at a 
suitable location. Otherwise parts of the tire 
could come loose, resulting in an accident. Do 
not continue driving. Instead, contact your 
BMW center.
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Status display
1.
"Vehicle Info"
2.
"Vehicle status"
3.
"Flat Tire Monitor"
The status is displayed.
Tire Pressure Monitor TPM*
The concept
TPM checks the inflation pressures of the four 
mounted tires. The system notifies you if there 
is a significant loss of pressure in one or more 
tires.
Functional requirement
In order to assure the reliable reporting of a flat 
tire, the system must be reset while all tire infla-
tion pressures are correct.
Always use wheels with TPM electronics. Oth-
erwise, the system may malfunction.
Each time a tire inflation pressure has 
been corrected or a wheel or tire has been 
changed, reset the system.
<
System limitations
TPM cannot warn you in advance of sud-
den severe tire damage caused by out-
side influences.
<
The system does not work correctly if it has not 
been reset; for example, a flat tire may be indi-
cated even though the tire inflation pressures 
are correct.
The system is inactive and cannot indicate a flat 
tire if a wheel without TPM electronics, such as 
a compact spare wheel, has been mounted, or if 
TPM is temporarily malfunctioning due to other 
systems or devices using the same radio fre-
quency.
Status indicator on the Control Display
The color of the tires represents the status of 
the tires and the system.
TPM takes into account that tire pressures 
change while the vehicle is being driven. The 
tire pressures do not need to be corrected 
unless the TPM instructs you to do so by means 
of color indicators.
Online Edition for Part no. 01 41 2 602 116 - © 01/09 BMW AG