fuel Seat Alhambra 2016 Service Manual

Checking and refilling levels
●
Never ent er the
vehicle while refuelling. If it
is absolutely necessary to enter, close the
door and touch a metal surface before touch-
ing the filler nozzle again. This will prevent
the generation of static electricity. Sparks
could cause a fire when refuelling.
● Never handle fuel close to flames, sparks or
obj
ects with slow combustion (e.g. ciga-
rettes).
● Avoid static electricity and electro-magnet-
ic ra
diation when refuelling.
● Observe the safety regulations of the serv-
ice st
ation.
● Never spill fuel on the vehicle or in the lug-
gage c
ompartment. WARNING
For safety reasons, SEAT does not recommend
carr y

ing a spare fuel canister in the vehicle.
Fuel could be spilled and catch fire, above all
in case of an accident and this applies to a
full container as well as empty containers.
This could lead to explosions, fires and inju-
ries.
● Observe the following if you exceptionally
have t
o carry fuel in a canister:
– Never place a fuel container to fill it in-
side the vehicle or on the vehicle, for ex-
ample, in the boot or on the hatch. Filling
in these circumstances could create an
electrostatic charge and spark that could
ignite fuel fumes. –
Alw a

ys place the canister on the ground
to fill it.
– Insert the fuel nozzle into the neck of the
canister as far as possible.
– If you are using a metal fuel canister, the
nozzle must always touch the canister
while it is being filled to avoid static elec-
tricity.
– Follow the legal requirements for the use,
storage and transport of spare fuel canis-
ters.
– Insure that the fuel container complies
with manufacturing standards, for exam-
ple, ANSI or ASTM F852-86. CAUTION
● Alw a

ys remove any fuel spilled on the vehi-
cle paintwork immediately to avoid damage
to the wheel housing, the tyre and vehicle
paintwork.
● Refuelling a petrol engine with diesel or a
diesel en
gine with petrol can cause serious
engine and fuel system damage; the resulting
malfunctions are not covered by the SEAT
warranty. If you refuel with the wrong type of
fuel, never start the engine. This applies to
even the smallest amount of the wrong fuel.
Seek specialist assistance. With the engine
running, the composition of the wrong fuel
could significantly damage the fuel system
and the engine itself.
● In vehicles with a diesel engine, under no
circ
umstances should you refuel or drive with petrol, kerosene, heating oil or any other
type of
diff

erent fuel. Other types of fuels
could cause serious damage to the engine
and to the fuel supply system and the result-
ing problems are not covered by the SEAT
warranty. For the sake of the environment
Fuels can contaminate the environment. Col-
l ect an

y spilt service fluids and allow a pro-
fessional to dispose of them. Note
There is no emergency mechanism for the
manua l

release of the fuel tank flap. If neces-
sary, request assistance from specialised per-
sonnel. 265
Technical data
Advice
Operation
Emergencies
Safety

Advice
Control lamps and fuel gauge Fig. 235
On the instrument panel: Fuel gauge
f or petr
o
l and diesel 
It lights up
Gauge posi-
tion
››› Fig. 235Possible cause
››› Solution
Red mark (ar- row)
The fuel tank is al-
most empty.
The reserve tank is
being used
››› page 39.
Refuel as soon as
possible ››› . 
It lights up
Fuel tank not
closed cor-
rectly.Stop the vehicle and close the tank
flap properly.
Several warning and indication lamps light
up f
or a f
ew sec

onds when the ignition is
switched on, signalling that the function is being verified. They will switch off after a few
seconds.
When the c

ontrol lamp lights up  or  the
auxiliary heating and heater running off pet-
rol automatically switch off. WARNING
Driving with insufficient fuel reserve could re-
su lt

in the vehicle breaking down in traffic
and a serious accident.
● If the fuel level is too low then the fuel sup-
ply t
o the engine can become irregular espe-
cially on slopes.
● If the engine “is choked” or stalls due to
lack
of or irregularity of the fuel supply, the
power steering as well as all of the driver as-
sistance systems including braking assis-
tance will stop working.
● Always refuel when there is only one quar-
ter of the f
uel tank left to avoid running out of
fuel. CAUTION
● Alw a

ys pay attention to any lit control
lamps and to the corresponding descriptions
and instructions to avoid damage to the vehi-
cle.
● Never run the fuel tank completely dry. An
irregu
lar fuel supply may lead to ignition
faults and unburnt fuel could enter the ex-
haust system. This could damage the catalyt-
ic converter filter or the diesel particulate fil-
ter! Note
The arrow next to the fuel pump symbol on
the ins trument

panel ››› Fig. 235 indicates the
side of the vehicle on which the fuel tank flap
is located. Refuelling
Fig. 236
Open fuel tank flap with tank cap in
the ho l
der Read the additional information carefully
› ›
›

 page 39
Refuelling
The correct petrol type for the vehicle is loca-
ted on a sticker inside the fuel tank flap
››› page 267.
● If the automatic filler nozzle is operated
correctly
, it will switch itself off as soon as
the tank is full ››› .
266

Checking and refilling levels
● Do not c
ontinue t
o refuel if it is turned off!
Otherwise, this will fill the expansion cham-
ber and fuel may leak out if the ambient con-
ditions are warm. WARNING
Do not continue refilling once the fuel nozzle
ha s

switched itself off. The fuel tank may be
filled too much. As a result, fuel may spurt
out and spill. This could lead to a fire, explo-
sion and severe injuries. CAUTION
● Alw a

ys remove any fuel spilled on the vehi-
cle paintwork immediately to avoid damage
to the wheel housing, the tyre and vehicle
paintwork. For the sake of the environment
Spilt fuel can contaminate the environment. Fuel
Intr oduction You will find a factory-fitted sticker containing
inf
orm
ation on the type of

fuel for your vehi-
cle on the inside of the fuel tank flap. WARNING
Refuelling or handling fuel carelessly can
cau se an e

xplosion or fire resulting in serious
burns and injuries.
● Fuel is a highly explosive, easily flammable
subs
tance.
● Observe current safety instructions and lo-
cal
regulations concerning the handling of
fuel. Types of fuel
The type of fuel to use when refilling will de-
pend on the
v
ehic

le's engine. You will find a
factory-fitted sticker containing information
on the type of fuel for your vehicle on the in-
side of the fuel tank flap.
SEAT recommends the use of sulphur-free or
low sulphur fuel to reduce consumption and
prevent engine damage.
Possible types of fuel
91 a)
RONNormal petrol, normal unleaded
petrol ››› page 267
95 a)
RONPremium unleaded petrol (95 RON)
››› page 267
98 a)
RONPremium unleaded petrol 98
››› page 267
Possible types of fuel
Diesel››› page 268
a)
RON = Regulation Octane Number
Petrol Petrol types
Vehic
l

es with petrol engines must refuel us-
ing unleaded petrol according to European
norm EN 228 ››› .
P etr
o

l types are categorised according to
their octane number (e.g. 91, 95, 98 or 99
RON (RON = “Research Octane Number”).
You may use petrol with a high octane num-
ber than the one recommended for your en-
gine. However, this has no advantage in
terms of fuel consumption and engine power.
SEAT recommends refuelling with a low sul-
phur content or sulphur-free petrol to reduce
fuel consumption for petrol engines.
Petrol additives
The quality of the fuel influences the behav-
iour, power and service life of the engine.
This is why the petrol you use should carry
suitable additives already included by the
petrol industry, free of metals. These addi-
tives will help to prevent corrosion, keep the
fuel system clean and prevent deposits from
building up in the engine. »
267
Technical data
Advice
Operation
Emergencies
Safety

Advice
If good-quality petrol with metal-free addi-
tiv e
s
is not available or engine problems
arise, the necessary additives must be added
when refuelling ››› .
Not al
l

petrol additives have been shown to
be effective. The use of unsuitable petrol ad-
ditives may cause significant damage to the
engine and the catalytic converter. Metal ad-
ditives should never be used. Metal additives
may also be contained in petrol additives for
improving anti-detonation ratings or octane
ratings ››› .
S EA
T r

ecommends “genuine Volkswagen
Group Fuel Additives for petrol engines”.
These additives can be bought at SEAT deal-
ers, where information on how to use them
can also be obtained. CAUTION
● Do not r ef

uel if the filler indicates that the
fuel contains metal. LRP (lead replacement
petrol) fuels contain high concentrations of
metal additives. Using them may damage the
engine!
● Only use fuel with an octane rating that is
in line with the norm EN 228, otherw
ise sig-
nificant damage could be caused to the en-
gine and fuel system. Furthermore, it could
lead to a loss of performance with the conse-
quent engine fault.
● The use of unsuitable petrol additives could
damag
e the engine. ●
If, in e x

ceptional circumstances, petrol with
a lower octane rating to that recommended is
used, only use moderate engine speeds and a
light throttle. Avoid using full throttle and
overloading the engine. Otherwise you may
damage the engine. Fill up with fuel of a suit-
able octane rating as soon as possible.
● Just one full tank of leaded fuel would seri-
ously
impair the efficiency of the catalytic
converter and could damage it. Diesel
Diesel fuel
Die
sel
f

uel must correspond to European
standard EN 590 (In Germany, EN 590 or
DIN 51628).
The use of diesel fuel with a high sulphur
percentage requires shorter service intervals
››› Booklet Maintenance Programme ››› .
Y our t
ec

hnical service centre will be able to
tell you which countries have diesel with a
high sulphur content.
Do not mix fuel additives (thinners, or similar
additives) with diesel fuel.
Winter-grade diesel
When using “summer-grade diesel fuel”, dif-
ficulties may be experienced at temperatures
below 0°C (+32°F) because the fuel thickens
due to wax separation. For this reason, “win- ter-grade diesel fuel” is available in Germany,
for ex

ample, during the cold months. It can
be used at temperatures as low as -20°C
(-4°F).
In countries with different climatic condi-
tions, other types of diesel fuel are available
that are suitable to local temperatures. Tech-
nical service centres and filling stations in
the country concerned will inform you on the
types of diesel fuels available.
A cold diesel engine makes more noise dur-
ing winter temperatures than summer tem-
peratures. Furthermore, the exhaust gases
may turn slightly bluish while the engine is
heating. The quantity of exhaust gases will
depend on the outside temperature.
Filter pre-heater
Vehicles with a diesel engine are fitted with a
fuel filter pre-heating system. This ensures
that the fuel system remains operational to
approx. -24°C (-11.2 ºF), provided you use
winter-grade diesel which is safe to -15°C
(+5.0°F).
However, if the fuel has waxed to such an ex-
tent that the engine will not start at tempera-
tures of under -24°C (-11.2°F), simply place
the vehicle in a warm garage or workshop for
a while to heat up.
268

Checking and refilling levels
Auxiliary heater
V ehic
l
es with a diesel engine may be fitted
with an auxiliary heater. The heater runs off
the fuel from the fuel tank. On doing so,
smells and steam may be noticed outside the
vehicle for a short period. This is normal and
it is not an indication of a fault in the vehicle.
Whenever there is little fuel in the tank (re-
serve), the auxiliary heater automatically
switches off. WARNING
Never use start boosters. An aerosol start
boos t

er could explode or cause a sudden rise
in engine speed leading to engine damage
and serious injury. CAUTION
● The v ehic

le is not prepared for the use of
biodiesel. Never, under any circumstances re-
fuel with biodiesel. It could damage the fuel
system and subsequently lead to engine
faults!
● The addition of biodiesel to diesel by the
diesel pr
oducer according to Standard EN 590
or other equivalent (DIN 51628 in Germany,
for example) is authorised and causes no
type of damage to the engine or the fuel sys-
tem.
● The diesel engine has been designed for to
use diesel
fuel exclusively. Therefore, never
use petrol, fuel oil or other unsuitable fuels. The composition of these fuels may signifi-
cantly
d

amage the fuel system and the en-
gine.
● The use of diesel fuels with a high sulphur
percent
age could considerably reduce the
service life of the diesel particulate filter.
Your technical service centre will be able to
tell you which countries have diesel with a
high sulphur content. Information on fuel consumption
The consumption and emission values indi-
c
at
ed do not

refer to one specific vehicle.
They are only to be used to compare the val-
ues of the different vehicle versions. The fuel
consumption and CO 2 emissions of a vehicle
not only depend on the effective use of fuel.
They also depend on your driving style and
other non-technical factors.
Calculation of fuel consumption
Fuel consumption and emission values are
determined according to the current version
of the 715/2007/EC or 80/1268/EEC regula-
tion and are valid for the vehicle kerb weight.
The specifications do not refer to an individu-
al vehicle. Two measuring cycles are carried
out on a rolling road test bed to calculate fuel
consumption. The test criteria are as follows:
Urban cycle
Measurement of the urban cycle
starts with an engine cold start. City
driving is simulated below at be-
tween 0 and 50 km/h (31 mph).
Road cycle
In the road cycle simulation, the car
undergoes frequent acceleration and
braking in all gears, as in normal ev-
eryday driving. The road speed rang-
es from 0 to 120 km/h (0 to 75 mph).
Combined
The average combined consumption
is calculated with a weighting of
around 37 % for the urban cycle and
63 % for the road cycle.
CO 2 emissions
of the combina-
tion
The exhaust gases are collected dur-
ing both driving cycles to calculate
carbon dioxide emissions (urban and
road). The gas composition is then
analysed to evaluate the CO 2 content
and other emissions. Note
● The kerb w eight

may vary according to the
vehicle equipment. This could raise consump-
tion and the CO 2 emissions slightly.
● In practice, consumption values could be
different
to the values calculated based on
the 715/2007/EC or 80/1268/EEC regula-
tions. 269
Technical data
Advice
Operation
Emergencies
Safety

Advice
Opening the tank filling neck
● Open the rear lid.
● Rotate the shut off on the cover clockwise
› ›
›
Fig. 237 and open the cover forwards.
● Unscrew the tank filler neck cap ›››
Fig. 238
1 anticlockwise.
R efi
l
ling AdBlue
Only use AdBlue that is approved by SEAT
and that complies with ISO 22241-1 Stand-
ard. Only use genuine bottles.
● Observe the instructions and information
prov
ided by the refill bottle manufacturer.
● Observe the expiry date.
● Unscrew the cap on the refill bottle.
● Place the refill bottle 2 upside down in-
s ide the t
ank

filler neck.
● Press the refill bottle against the filler neck
and keep in this
position.
● Add at least 5.0 litres of AdBlue (6 bottles).
A lower quantity
would be insufficient.
● Wait until the contents of the refill bottle
have been pour
ed into the AdBlue tank. Do
not crush or damage the bottle!
● Unscrew the liquid bottle anticlockwise and
remov
e it carefully ››› .
● You can tell when the AdBlue tank is full
bec au
se the bottl

e will be empty. Closing the tank filling neck
●
Screw on the tank filler neck cap ›››
Fig. 238
1 clockwise until it is fully inserted.
● Place the cover and turn the shut off anti-
c loc
k

wise to close it.
Operations before driving
● Only switch the ignition on after refilling.
● Keep the ignition sw

itch on for at least 30
seconds
so that the system detects tank re-
filling.
● Wait 30 seconds before starting the en-
gine! WARNING
Only keep AdBlue in its original container,
tightly shut and in a s

afe place.
● Never keep AdBlue in empty food cans, bot-
tles
or other containers to avoid other people
mistaking it for something else.
● Keep the AdBlue out of the reach of small
chil
dren. CAUTION
● Only r

efill using AdBlue expressly approved
by SEAT. The use of any other type of AdBlue
could cause engine damage!
● AdBlue should never be mixed with water
or any other a
dditives. Any type of damage
caused by a mixture will not be covered by
the warranty. ●
Do not a d

d AdBlue to the diesel fuel tank!
Otherwise you may damage the engine.
● Never leave the refill bottle in the vehicle. It
coul
d become permeable due to temperature
changes and bottle damage and the AdBlue
could damage the vehicle interior. For the sake of the environment
Dispose of the refill bottle in an environment-
friendly manner

. Note
Suitable AdBlue refill bottles can be pur-
ch a

sed from a technical service centre. Working in the engine compart-
ment
Intr oduction Before working in the engine compartment,
m
ak
e s

ure that the vehicle is parked on hori-
zontal and firm ground.
The engine compartment of the vehicle is a
hazardous area. Never work on the engine or
in the engine compartment if you are not fa-
miliar with the operations to be carried out,
the applicable safety standards and especial-
ly if you do not have the necessary instru-
ments, liquids and tools ››› ! Have the work
272

Advice
risk from rotating parts, such as the drive
belts, a
lt
ernator, radiator fan, etc., as well as
from the high-voltage ignition system. Al-
ways work with the utmost caution.
– Always make sure that no parts of your
body, jewellery, ties, loose clothing and
long hair can be trapped by the rotating
parts of the engine. Before any work, re-
move ties and jewellery (necklaces, etc),
tie long hair back and tie all items of
loose clothing to your body to make sure
that they cannot be trapped by engine
components.
– Take extreme caution when operating the
accelerator and remain attentive. The ve-
hicle could move, even with the electron-
ic parking brake activated.
● Always make sure you have not left any ob-
jects, s
uch as cleaning cloths and tools, in
the engine compartment. If any object is left
in the engine compartment, this could cause
malfunctions, engine faults and even a fire. WARNING
Refill liquids and certain materials can catch
fire e a

sily in the engine compartment, caus-
ing a fire and serious injury!
● Never smoke.
● Never work close to places exposed to
flames
or sparks.
● Never pour service fluids over the engine.
These fluid ma
y ignite hot engine parts and
cause injuries. ●
If it i

s necessary to work on the fuel system
or the electrical system, please follow the in-
structions below:
–Always disconnect the vehicle battery.
When disconnecting the battery, ensure
that the vehicle is unlocked otherwise
the anti-theft alarm will be triggered.
– Never work close to heaters, heat sources
or places exposed to flames or sparks.
● Always keep a recently serviced and per-
fectly w
orking fire extinguisher close by.
● Never cover the engine with additional in-
sul
ating materials such as a blanket. Risk of
fire! CAUTION
When refilling or changing service liquids,
ens ur

e that you put the liquids into the right
tank. Making a mistake when refilling could
cause serious malfunctions and damage the
engine! For the sake of the environment
Service fluids leaks are harmful to the envi-
ronment . F

or this reason you should make
regular checks on the ground underneath
your vehicle. Take the vehicle to a specialised
workshop to be checked if you see stains, oil
or other fluids on the ground. Collect any
spilt service fluids and allow a professional to
dispose of them. Opening and closing the bonnet
Fig. 239
In the footwell on the driver side:
L ev
er f

or unlocking the bonnet Fig. 240
Release lever to open the bonnet in
the r a
di

ator grille Opening the bonnet
The l
ev
er t

o open the bonnet can only be
used if the driver door is open.
274

Advice
● Re
gu
larly check tyres for non-visible dam-
age ››› page 294.
● Never exceed the maximum permitted
speed or loa
ds specified for the type of tyre
fitted on your vehicle ››› page 295.
● Do not allow tyres to come into contact with
aggre
ssive substances, grease, oil, fuel or
brake fluid ››› .
● Lost valve caps should be replaced imme-
di at
ely

.
Changing wheels
To ensure that the wear is equal on all tyres
the wheels should be changed round from
time to time according to the system
››› Fig. 251. The useful life of all the tyres will
then be about the same time.
SEAT recommends you take the vehicle to a
specialised workshop to have the tyres
changed.
Tyres over 6 years old
Tyres are subject to an ageing process as a
result of physical and chemical processes.
This may affect their performance. Tyres
which are stored for long periods of time
without being used, harden and become
more fragile than tyres which are in constant
use.
SEAT recommends that tyres over six years
old are replaced with new tyres. This also ap-
plies to tyres which appear to be in perfect condition on the outside and which have a
trea

d depth within the values stipulated by
the Law ››› .
The d at
e of

manufacture, part of the tyre
identification number (TIN), indicates the age
of the tyre ››› page 295.
Storing tyres
Mark tyres when you remove them to indicate
the direction of rotation (left, right, forwards,
backwards). This ensures you will be able to
mount them correctly when you replace
them. When removed, the wheels and/or
tyres should be stored in a cool, dry and pref-
erably dark location. Do not place tyres
mounted on the wheel in a vertical position.
Protect tyres not mounted on wheels from
dirt by storing them in suitable bags and
standing them on the ground on their tread. WARNING
Aggressive fluids or substances could result
in v i

sible or invisible damage with the conse-
quent risks.
● Always ensure that tyres do not come into
contact
with chemical products, oil, grease,
fuel, brake fluid or other aggressive substan-
ces. WARNING
Old tyres, even if they have never been used,
ma y

lose air or burst unexpectedly while driv-
ing, resulting in serious accident or damage.
● If tyres are over six years old, they should
only be u
sed in an emergency and with ex-
treme caution. For the sake of the environment
Old tyres must be disposed of by qualified
personnel ac

cording to the laws in the coun-
try concerned. Wheels
The design of wheel bolts is matched to the
rims. If
diff
er

ent rims are fitted, the correct
wheel bolts with the right length and correct-
ly shaped bolt heads must be used. This en-
sures that wheels are fitted securely and that
the brake system functions correctly
››› page 84.
For technical reasons, it is not generally pos-
sible to use the wheels from other vehicles.
In some cases, this may also be true for the
same model of wheel.
The tyres and rims approved by SEAT are spe-
cially matched to the characteristics of the
vehicle and are critical to good road holding
and safe handling.
290

Advice
WARNING
There should be adequate space between the
tyr e
s and the vehicle in accordance with the
vehicle design. If this is not the case, the
tyres may rub against parts of the running
gear, chassis or brake lines, leading to faults
in the brake system or to tread detachment,
and the risk of burst tyres.
● The true tyre dimension should not be
great
er than the dimensions of tyres manu-
factured and approved by SEAT and should
not rub against parts of the vehicle. Note
● Although ty r

es may be shown as being the
same size, the true dimensions of different
types of tyre may vary with respect to the
nominal size, or tread patterns may be differ-
ent.
● If you use tyres that are approved by SEAT,
you can be s
ure that the true tyre dimensions
will be correct for your vehicle. For other tyre
models, the tyre vendor should provide the
manufacturer's certificate with the tyre, indi-
cating that this type of tyre is suitable for
your vehicle. This certificate should always
be carried with the vehicle. Tyre pressure
Fig. 252
Position of tyre pressure specifica-
tion p l
at
e The correct tyre pressures for tyres fitted at
the f
act
or

y is shown on a label and is valid
for summer and winter tyres. This label
››› Fig. 252 is either on the driver door strut or
inside the fuel tank flap.
Under-inflation or over-inflation will reduce
the life of the tyres considerably and also im-
pair the car's handling ››› . It is essential to
m aint
ain the c

orrect tyre pressures, especial-
ly if driving at high speeds. Incorrect tyre
pressure causes premature wear and could
cause tyre blow-out. The pressure should therefore be checked at
lea

st once a month and before starting a
journey.
As a general rule, the pressures given are for
cold tyres. When the tyres are hot, the pres-
sures are greater.
Never deflate a hot tyre in order to obtain the
required pressure. This could result in very
low tyre pressures which may lead to sudden
blow-outs.
Checking tyre pressures
Tyre pressures should only be checked when
the vehicle has not been driven for more than
a few kilometres (miles) at low speeds in the
past three hours.
● The tyre pressures should be checked regu-
larly, and on
ly when the tyres are cold. Al-
ways check all the tyres. Tyre pressures
should be checked more often in colder re-
gions, and only when the vehicle has not
been driven recently. Always use a correctly-
operating tyre gauge.
● Adjust tyre pressures to the loads carried in
the vehic
le.
● After checking the pressure, always replace
the valv
e caps, and where applicable, ob-
serve the instructions given for adjusting the
tyre control system ››› page 234.
292

Wheels and tyres
WARNING
If tyre pressures are too high or too low, the
tyr e m
ay deflate or burst suddenly while driv-
ing. This could result in a serious accident.
● If the tyre pressure is too low, they could
overhe
at, resulting in tread detachment or
even burst tyres.
● When driving at high speeds and/or fully
loaded, the ty
re could suddenly overheat,
burst or be subject to tread detachment, with
the resultant loss of control of the vehicle.
● Tyre pressures which are too high or too
low reduc
e the service life of the tyre, affect-
ing the vehicle's performance.
● Tyre pressures should be checked regularly,
at le
ast once a month and before long jour-
neys.
● Adjust the pressures of all the tyres to the
vehicl
e load.
● Never deflate excess pressure from hot
tyre
s. CAUTION
● Tak e c

are not to tilt the manometer when
placing it on the valve. Otherwise, the valve
may be damaged.
● If tyre valves are not protected by caps, or if
the caps
are not screwed on correctly, they
may become damaged. Check that the caps
are identical to the standard caps and have
been correctly tightened. For the sake of the environment
Under-inflated tyres will increase fuel con-
sumption. Note
When checking tyre pressures, please ob-
serv e the in

structions for the tyre control sys-
tem ››› page 234. Wear indicator depth profile
Fig. 253
Tyre tread: tread wear indicators Tread depth
C
er
t

ain driving conditions require a deeper
tread, as well as needing the tread to be ap-
proximately the same on the front and rear
tyres. This is particularly important when
driving in winter, in cold temperatures and on
wet roads ››› .The minimum tread depth required by law in
the m
aj
ority

of cases is 1.6 mm (1/16 of an
inch), measured in the tread grooves next to
the tread wear indicators. Observe legal re-
quirements in each country.
Winter tyres lose much of their performance
when their tread has worn to 4 mm
(5/32 inch).
The tread depth of new tyres may vary, ac-
cording to the type and make of tyre and the
tread pattern.
Wear indicators on the tyre
The original tyres on your vehicle have
1.6 mm (1/16 inch) high ››› Fig. 253 tread
wear indicators running across the tread. A
number of these indicators are equally
spaced around the tyre tread. Certain marks
on the tyre walls (e.g. the letters “TWI” or
other symbols) indicate the position of the
wear indicators.
Tread wear indicators indicate if a tyre is
worn. They must always be replaced before
the tyre tread has worn to the level of the in-
dicator. WARNING
Driving with worn tyres is dangerous, and
ma y

lead to loss of control of the vehicle with
serious consequences. » 293
Technical data
Advice
Operation
Emergencies
Safety