also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop
ping ability .
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re
sponsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres
sure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the sys
tem is not operating properly. The TPMS mal
function indicator is combined with the low tire pressure telltale . When the system detects a
malfunct ion, the telltale will flash for approxi
mately one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent veh icle start-ups as long as the mal
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function properly.
Wheels
If the Tire Pressure Monitoring System
indicator appears
Appl ies to vehicles : wi th t ir e p ress ure mo nito rin g system
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
Fig. 172 Instrument cluster: i ndicator light with message
Using the ABS sensors, the tire pressure monitor
ing system compares the tire tread circumference
and vibration characteristics of the individual
tires .
If the pressure changes in one or more
tires, this is indicated in the instrument cluster
display with an indicator light
[I] and a message .
If only one tire is affected, the location of that
tire will be indicated .
The tire pressures must be stored in the Infotain
ment system again each time the pressures
change (switching between partial and full load
pressure) or after changing or replacing a tire on
your vehicle ¢
page 224. The tire pressure moni
toring system only monitors the tire pressure you have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
r=> page215, fig.171.
Tire tread circumference and vibration character
istics can change and cause a tire pressure warn
ing if:
- the tire pressure in one or more tires is too low .
- the tire has structural damage.
- the tir e was replaced or the tire pressure was
changed and it was not stored ¢
page 224.
-the spare t ire* is installed.
Indicator lights
[I] Loss of pressure in at least one tire¢.& .
Check the tires and replace or repair if necessary .
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223
Emerg enc y ass is tance
There are some restrictions on the use of the
compact spare tire. The compact spare tire has
been designed specifically for your type of vehi
cle. It must not be swapped w ith a compact
spare tire from another type of vehicle.
Snow chain s
For technical reasons, the use of snow chains on
the compact spare tire is
n ot permitted .
If you do have to drive w ith snow cha ins and a
front tire f ails, mount the spare whee l with tire
instead of a rear tire. Install the snow chains on
the rear tire and use it to replace the defective
front tire .
A WARNING
-Never use the spare tire if it is damaged or if
it is worn down to the tread wear ind icators.
- If the spare t ire is more than 6 years o ld,
use it only in an emergency and w ith ex
treme caut ion and careful driving.
- The spare tire is intended only for tempora
ry and short-term use.
It should be replaced
as soon as possible with the norma l wheel
and t ire.
- After mounti ng the compact spare tire, the
t ire pressure must be checked as soon as
poss ible. The tire pressure of the compact
spare t ire must be 4.2 bar; otherwise, you
risk having an a cc ident.
- Do not drive faster than 50 mph (80 km/h) .
You r isk having an accident.
- Avoid full-throttle acce lerat ion, heavy brak
ing, and fast corneri ng. You r is k having an
a cc ident.
- Never dr ive using more than one spare
wheel and tire. You risk hav ing an accident.
- Norma l summer or winter tires must not be
mounted on the compact spare whee l rim.
- For technical reasons, the use of tire chains
on the spare tire is not permitted. If it is
necessary to drive w ith tire chains, the spare
wheel m ust be mounted on the front axle in
the event of a flat in a rear tire. The new ly
available front wheel must then be installed
in place of the rear wheel with the flat tire .
226
Installing the tire chain before mounting
the wheel and tire is recommended.
- Loose items in the passenger compartment
can cause serious personal injury during
hard braking or in an accident. Never store
the spare t ire or jack and tools in the pas
senger compartment .
Replacing wheels
Before changing a wheel
Observe the following precautions for your own
and your passenger 's safety when changing a
wheel.
~ After you experience a t ire failure, pu ll the ca r
wel l away from mov ing traffic and t ry to reac h
le vel ground before you stop ¢ ,& .
~ All passengers should lea ve the car and move
to a safe location (for instance, behind the
guardrail) ¢,& .
~ Engage the pa rking brake to prevent your vehi
cle from ro lling unintent ionally¢ ,&.
~ Shift into 1st gear on veh icles with manual
transm iss ion, or move the
selector lev er to the
P po sition
on vehicles with automatic transmis
sion .
~ If you are towing a trai le r: unhit ch the trailer
from your ve hicle.
~ Take the jack ¢ page 225 and the spare tire
¢ page 225 out of the luggage compartment .
A WARNING
You or your passengers could be injured wh ile
changing a whee l if you do not follow these
safety precautions:
- If you have a flat tire, move a safe d ista nee
off the road. Turn off the eng ine, turn the
emergency flashers on and use other warn ing dev ices to alert other motor ists.
- Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
- To help preve nt the vehicle from moving
suddenly and possibly slipping off the jack,
always fully set the parking b rake and block
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