Wheels
Please note that the loose wheel warning may
fail if there is an ESC fault. When driving with
snow chains, the warning may be triggered erro-
neously or a system malfunction may occur.
WARNING
Please observe the important safety informa-
tion and notes ðpage 254.
WARNING
Tyre pressure loss
indicator
If the wheel bolts have not been tightened
correctly, they can come loose, and you could
lose control of the vehicle – risk of accident!
– If a driver message is displayed, slow down
immediately and avoid any severe braking or
steering manoeuvres. As soon as you can do
so safely, stop and check the wheel bolts.
– Check your wheels for damage and have any
damaged wheels inspected and/or replaced
by a qualified workshop as soon as possible.
– Under certain conditions (e.g. driving at high
speeds, on ice and snow or on poor road sur-
faces) the driver message may not appear
immediately.
Introduction
Within the system limits, the tyre pressure loss
indicator in the instrument cluster informs the
driver if the tyre pressure is too low or a system
malfunction has occurred.
The system makes use of the ABS sensors to
compare the rolling circumference and the vibra-
tion of the tyres. If changes in the inflation pres-
sure are detected on one or more tyres, the driver
is alerted by an indicator lamp and a message
on the instrument cluster. If only one tyre is af-
fected, the display will indicate its position. The
tyre pressure loss indicator on your Audi is spe-
cially matched to “Audi Genuine Tyres”
– It is the driver's responsibility to ensure that
the wheel bolts are properly secured.
ðpage 250. Audi recommends that you use
these tyres.
Driver messages about the loose wheel
warning
Each time tyre pressures are changed (e.g. when
switching from partial load to full load and vice-
versa) on your vehicle, or after the tyres are
changed, you must store the new tyre pressures
ðpage 256. Monitoring of the tyre pressures is
based on the tyre pressures you have stored. The
inflation pressures recommended for your vehicle
are given on the tyre pressure sticker
The following driver messages may appear:
Wheel bolts loose. Please stop vehicle safely
and check all wheel bolts.
Loose wheel warning for at least one of the
wheels ð in Introduction on page 255. Use the
box spanner from the vehicle toolkit to check the
wheel bolts of all the wheels right away. Have the
tightening torques checked as soon as possible
with a torque wrench. Until then, drive with cau-
tion. For the correct tightening torque, refer to
ðpage 271, Finishing the tyre change.
ðpage 252, Fig. 131.
Each time tyre pressures are changed (e.g. when
switching from partial load to full load and vice-
versa) on your vehicle, or after the tyres are
changed, you must store the new tyre pressures
ðpage 256. Monitoring of the tyre pressures is
based on the tyre pressures you have stored. The
inflation pressures recommended for your vehicle
are given on the tyre pressure sticker
Wheel check active. Please drive on carefully
After a driver message has been displayed and
you have checked the wheel bolts, the system
will check the wheels as you drive. This may take
a few minutes.
ðpage 252, Fig. 131.
The rolling circumference and vibration can
change and cause a tyre pressure warning if:
Loose wheel warning: fault. See owner's
manual
– The inflation pressure in one or more tyres is
too low.
A system fault has occurred. Drive to a qualified
workshop soon and have the fault rectified.
255
English 
