BMW 2004 Z4 Roadster 3.0i Owner's Manual

place in all four tires over an extended
period of time.

On the other hand, the following situations
can lead to false warning, a delayed detec-
tion of pressure loss and even to the sys-
tem not functioning:

Driving on snow-covered or slippery
roads

Performance-oriented driving: slip at
the drive wheels, high levels of lateral
acceleration

When driving with snow chains, false
warnings and undetected pressure
losses may occur

If the Flat Tire Monitor was not initial-
ized after the last time the tire inflation
pressures were corrected, undetected
losses in pressure or false warnings
that indicate a non-existent flat tire are
possible.

Initializing the system

Each time you correct the pressure in
a tire, or change a wheel or tire, reini-

tialize the system immediately afterwards.
This requires driving.

Start the engine, but do not drive off

Press the button as long as you need to
until the yellow indicator lamp in the
instrument cluster lights up for a few
seconds

Drive off.

It takes a few minutes before the Flat Tire
Monitor can detect a flat tire and issue a
warning.

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

Flat tire warning

The indicator lamp in the instrument
cluster lights up in red. This visual
alert is accompanied by an acoustic

warning signal. There is a flat tire or a sign-
ficant loss of tire pressure.

Carefully reduce your speed to under
50 mph / 80 km/h. Avoid strong braking
and steering maneuvers. Do not exceed
a maximum speed of 50 mph / 80 km/h.

Check the inflation pressure in all four
tires as soon as possible.

Because the sides of Run Flat
tires are reinforced, a drop in infla-

tion pressure usually cannot be
detected from the outside, refer to Run
Flat tires on page

Before continuing to drive, refer to the
notes on page

If the vehicle is not equipped with Run
Flat tires, refer to page

, the stan-

dard equipment by design, continuing to
drive with a flat tire can result in serious
accidents.

System malfunction

The indicator lamp in the instrument
cluster lights up yellow. The Flat
Tire Monitor is malfunctioning or out

of order. Please refer the problem to your
BMW center.