BMW Z4 Roadster 2.5i 2004 - Manual (Page 57)

Reference
At a glance
Controls
Driving tips
Mobility
55
place in all four tires over an extended
period of time.
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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.
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1. Start the engine, but do not drive off
2. Press the button as long as you need to
until the yellow indicator lamp in the
instrument cluster lights up for a few
seconds
3. 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.
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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.
1. 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.
2. 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
80 . <
3. Before continuing to drive, refer to the
notes on page
80 .
If the vehicle is not equipped with Run
Flat tires, refer to page
80 , the stan-
dard equipment by design, continuing to
drive with a flat tire can result in serious
accidents.
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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.
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