Bmw Z4 sDrive35i 2009 User Manual download pdf (Page 84)

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.<

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.

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