brakes Seat Ibiza SC 2010 Owner's manual

Contents3
ContentsManual structure
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Content
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Safety First
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Safe driving
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Brief introduction . . . . . . . . . . . . . . . . . . . . . . . .
Proper sitting position for occupants . . . . . . . . .
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storing objects . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat belts
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Brief introduction . . . . . . . . . . . . . . . . . . . . . . . .
Why wear seat belts? . . . . . . . . . . . . . . . . . . . . . .
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Belt tensioners* . . . . . . . . . . . . . . . . . . . . . . . . . .
Airbag system
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Brief introduction . . . . . . . . . . . . . . . . . . . . . . . .
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deactivating airbags* . . . . . . . . . . . . . . . . . . . . .
Child safety
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Brief introduction . . . . . . . . . . . . . . . . . . . . . . . .
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing child seats . . . . . . . . . . . . . . . . . . . . . .
Operating Instructions
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Cockpit
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Digital instrument panel display . . . . . . . . . . . .
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering column controls*
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General information . . . . . . . . . . . . . . . . . . . . . .
Audio Control . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio + Telephone Control . . . . . . . . . . . . . . . . .
Unlocking and locking
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Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio frequency remote control* . . . . . . . . . . . .
Anti-theft alarm system* . . . . . . . . . . . . . . . . . . .
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Panorama tilting sunroof* . . . . . . . . . . . . . . . . .
Lights and visibility
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Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior lights . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windscreen wipers . . . . . . . . . . . . . . . . . . . . . . .
Rear view mirrors . . . . . . . . . . . . . . . . . . . . . . . . .
Seats and storage compartments
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The importance of correct seat adjustment . . . .
Head restraints . . . . . . . . . . . . . . . . . . . . . . . . . .
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage compartment . . . . . . . . . . . . . . . . . . . . .
Ashtrays, cigarette lighter and power socket . .
First-aid kit, warning triangle, fire extinguisher*
Luggage compartment . . . . . . . . . . . . . . . . . . . .
Air conditioning
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Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air conditioning* . . . . . . . . . . . . . . . . . . . . . . . . . Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General notes . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving
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Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting and stopping the engine . . . . . . . . . . .
Start-Stop function* . . . . . . . . . . . . . . . . . . . . . .
Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic gearbox* . . . . . . . . . . . . . . . . . . . . . .
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acoustic parking aid system* . . . . . . . . . . . . . . .
Cruise control* . . . . . . . . . . . . . . . . . . . . . . . . . . .
Practical Tips
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Intelligent technology
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Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-lock brake system and traction control ABS
Electronic Stability Programme (ESP)* . . . . . . . .
Driving and the environment
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Running-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust gas purification system . . . . . . . . . . . . .
Economical and environmentally friendly driving
Driving abroad . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer towing . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle maintenance and cleaning
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General notes . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle exterior maintenance . . . . . . . . . . . . . . .
Vehicle interior maintenance . . . . . . . . . . . . . . .
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Cockpit
64•If the brake fluid level is correct, the fault in the brake system may have
been caused by a failure of the ABS system. This could cause the rear
wheels to lock quickly when you brake. This could cause the rear to break
away. Risk of skidding. Stop the vehicle and seek technical assistance.
Differential lock fault (EDL)*
EDL operates along with the ABS in vehicles equipped with an
Electronic Stability Programme (ESP)*A malfunction in the EDL is indicated by the ABS warning lamp
J. Take the
vehicle to a specialised workshop as soon as possible. For further informa-
tion on the EDL see ⇒page 156, “Electronic differential lock (EDL)*”.
Traction control system (TCS)*
/l
The traction control system prevents the driven wheels from
spinning when the vehicle is acceleratingThere are two warning lamps for the traction control system:
 and
l. The
warning lamp
 lights up when the ignition is switched on and should turn
off after 2 seconds, which is the time taken for the function check.
The
 lamp has the following function:
•It flashes when the TCS is on, and the vehicle is moving.
If the system is deactivated or if it has any fault, the warning lamp will remain
li t . I t will als o co m e o n i f a fa ul t s hould occur in the A B S b e caus e t he TCS o pe r -
ates in conjunction with the ABS. For further information, see ⇒page 153,
“Brakes” The
l lamp provides information about the disconnection status of the
system:
•It stays lit when the TCS is disconnected after pressing the TCS OFF switch.
By pressing again, TCS function is reactivated and the warning lamp switched
off.Electronic Stability Programme (ESP)*
/ l
There are two warning lamps for the electronic stability
programme. The
 lamp provides information concerning
the function and the l provides information on the discon-
nection status
The warning lamp
 lights up when the ignition is switched on and should
turn off after 2 seconds, which is the time taken for the function check.
This programme includes the ABS, EDL and TCS. This also includes the brake
assist system (BAS), automatic cleaning of the brake discs and the trailer
stability programme (TSP).
The warning lamp  has the following functions:
•It flashes when the TCS/ESP is activated when driving.•It will light up continuously if there is a malfunction in the ESP.•It will also come on if a fault should occur in the ABS because the ESP
operates in conjunction with the ABS.
If the ESP warning lamp
 lights up and stays on after the engine is started,
this may mean that the control system has temporarily switched off the ESP.
In this case the ESP can be reactivated by switching the ignition off and then
on again. If the warning lamp goes out, this means the system is fully func-
tional.
WARNING (continued)
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Driving141
Safety First
Operating Instructions
Practical Tips
Technical Specifications
– With a selected gear, accelerate slowly and at the same time,
release the handbrake.The steeper the slope, the lower the needed gear. This increases the braking
effect of the engine. For example, when driving down a very steep slope in
third gear. If the engine brake effect is not enough, the vehicle will speed up.
The automatic gearbox automatically changes up to prevent the engine over-
revving. Use the foot brake to reduce speed and change into 3rd gear again
using tiptronic* ⇒.
Your vehicle has an automatic interlock which prevents the selector lever
from being put into a position for driving forwards or in reverse from positions
P or N if the brake pedal is not depressed.
Warning lamp “Pressing brake pedal”
K
When the warning lamp next to the selector lever lights up, press the brake
pedal. This is necessary when the automatic gearbox selector lever is moved
out of positions P or N. At the same time, a text message or the instructions
to perform necessary operations may appear on the instrument panel.
WARNING
•As a driver, you should never leave your vehicle if the engine is running
and a gear is engaged. If you have to leave your vehicle while the engine is
running, you must apply the parking brake and put the selector lever in
position P.•If the engine is running and D or R are engaged, you will need to hold
vehicle stopped by depressing the brake pedal. The car would keep on
creeping forward as the power transmission is not fully interrupted even
when the engine is idling.•Never accelerate when moving the selector gear or you may cause an
accident.•Never move the selector lever to R or P when driving. Risk of accident!
•Before driving down a long, steep slope, it is advisable to reduce speed
and change into a lower gear.•If you stop the vehicle up hill, always hold the foot brake strongly
depressed down to stop it from rolling back.•Never allow the brake to rub and do not use the brake pedal too often
or for long periods. Constant braking will cause the brakes to overheat and
will considerably reduce the brake effect. This increases the braking
distance and could cause the brake system to fail.•Never allow the car to roll down a mountain or a slope with the lever in
the N or D position, regardless of the engine is running or not.Caution
•If you stop the vehicle up hills, do not attempt to stop it from rolling back
by depressing the accelerator when a gear has been selected. Otherwise, the
automatic gearbox may overheat causing damage. Pull the handbrake up or
fully depress the brake pedal to prevent the vehicle from rolling away.•If you allow the car to roll when the engine is not running, or with the
selector lever in position N, a lack of lubrication in the automatic gearbox will
damage it.WARNING (continued)
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Driving
144•The wiper starts if the windscreen washer is on.•The parking distance warning system switches on.*
N - Neutral (idling)
If this position is selected, the gearbox is in neutral. Power is not transmitted
to the wheels and the engine does not have a braking function.
Never use the N position to drive down a hill. The engine does not function as
a brake and the brakes are subjected to excessive stain.
You could damage the automatic gearbox if you drive down hills with the gear
lever in position N and the engine switched off.
D - Drive (forward)
In this position the gearbox automatically changes to a lower or higher gear,
according to the engine’s requirements, the driving style and speed. The
braking effect of the engine when driving downhill is very limited when the
selector is in this position. The instrument panel displays the selected gear
as well as the selector lever in position D.
If position N has been selected and you wish to select D, you must press the
foot brake if the vehicle is stationary, or travelling at under 5 km/h.
S - Standard driving position (Sport programme)
When the selector lever is in position S, it will automatically change up into a
higher gear later, and change down into a low gear, if compared with position
D . This way, it is possible to take full advantage of the engine reserve power,
depending on the engine demand, driving style and speed. The braking
effect of the engine when driving downhill is very limited. On the instrument
panel display the selected gear is shown as well as the selector lever to posi-
tion S.
To se lec t gea r range S, press the lock button on the selector lever.
WARNING
If the vehicle moves with no control, an accident and serious injury may
occur.•As a driver, you should never leave your vehicle if the engine is running
and a gear is engaged. If you have to leave your vehicle while the engine is
running, you must always apply the handbrake and engage parking lock P.•If the engine is running and if D or R are engaged, you will need to hold
the the vehicle stopped by depressing footbrake down. The car would creep
forward as the power transmission is not fully interrupted even when the
engine is idling.•Never accelerate when moving the selector gear or you may cause an
accident.•Never move the selector lever to “R” or “P” when driving. Risk of acci-
dent.•Before driving down a very steep slope, reduce your speed and shift to
first gear.•Always hold the vehicle on the foot brake if you stop on hills. Other-
wise, the vehicle could roll back.•Never allow the brake to rub and do not use the brake pedal too often
or for long periods. Constant braking will cause the brakes to overheat and
will considerably reduce the brake effect. This increases the braking
distance and could cause the brake system to fail.WARNING
Never switch the engine off until the vehicle is stationary. You could lose
control of your vehicle. This could cause an accident and serious injury.•The airbags and belt tensioners do not work when the ignition is
switched off.•The brake servo does not work with the engine off. You need more force
to stop the vehicle.
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Driving
146
Always apply the handbrake when you leave your vehicle and when
you park.
Applying the handbrake
– Pull the handbrake lever up firmly ⇒fig. 106 .
Releasing the handbrake
– Pull the lever up slightly and press the release knob in the direc- tion of the arrow ⇒page 145, fig. 106 and guide the handbrake
lever down fully ⇒.Always apply the handbrake as far as it will go in order to prevent you from
driving with the handbrake applied by mistake ⇒.
The handbrake warning lamp
H lights up when the handbrake is applied
and the ignition switched on. The warning turns off when the handbrake is
released.
WARNING
•Never use the handbrake to stop the vehicle when it is in motion. The
braking distance is considerably longer, because braking is only applied to
the rear wheels. Risk of accident!•If it is only partially released, this will cause rear brakes overheating,
which can impair the function of the brake system and could lead to an acci-
dent. This also causes premature wear on the rear brake pads.Caution
Always apply the handbrake before you leave the vehicle. The 1st gear should
also be selected.
Parking
The handbrake should always be firmly applied when the
vehicle is parked.Always note the following points when parking the vehicle:
– Use the brake pedal to stop the vehicle.
– Apply the handbrake.
– The 1st gear should also be selected.
– Switch the engine off and remove the key from the ignition. Turn the steering wheel slightly to engage the steering lock.
– Always take you car keys with you when you leave the vehicle ⇒ .Additional notes on parking the vehicle on gradients:
Turn the steering wheel so that the vehicle rolls against the kerb if it started
to roll.•If the vehicle is parked facing downhill , turn the front wheels so that they
point towards the kerb .•If the vehicle is parked facing uphill, turn the front wheels so that they
point away from the kerb .•Secure the vehicle as normal by applying the handbrake firmly and
engaging 1st gear.WARNING
•Take measures to reduce the risk of injury when you leave your vehicle
unattended.
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Intelligent technology153
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Practical TipsIntelligent technologyBrakesBrake servoThe brake servo increases the pressure you apply to the brake pedal. It works
only when the engine is running .
If the brake servo is not functioning due to a malfunction, or if the vehicle has
to be towed, you will have to press the brake pedal considerably harder to
make up for the lack of servo assistance.
WARNING
The braking distance can also be affected by external factors.•Never let the vehicle coast with the engine switched off. Failure to do so
could result in an accident. The braking distance is increased considerably
when the brake servo is not active.•If the brake servo is not working, for example when the vehicle is being
towed, you will have to press the brake pedal considerably harder than
normal.
Hydraulic Brake Assist (HBA)*
The Hydraulic Brake Assist function (HBA) is only included in
vehicles with ESP.In an emergency, most drivers brake in time, but not with maximum force.
This results in unnecessarily long braking distances.
This is when the brake assist system comes into action. When pressing the
brake pedal rapidly, the assistant interprets it as an emergency. It then very
quickly builds up the full brake pressure so that the ABS can be activated
more quickly and efficiently, thus reducing the braking distance.
Do not reduce the pressure on the brake pedal. The brake assist system
switches off automatically as soon as you release the brake.
Automatic hazard warning lights activation
The brake lights flash automatically to indicate that the vehicle is braking
suddenly or in an emergency situation. If the emergency braking continues
until the vehicle comes to a standstill, the hazard warning lights will then
come on and the brake lights will remain on permanently from that moment.
The hazard warning lights will automatically switch off when the vehicle
begins to move again or when the warning light button is pressed.
WARNING
•The risk of accident is higher if you drive too fast, if you do not keep
your distance to the vehicle in front, and when the road surface is slippery
or wet. The increased accident risk cannot be reduced by the brake assist
system.
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Intelligent technology
154•The brake assist system cannot defy the laws of physics. Slippery and
wet roads are dangerous even with the brake assist system! Therefore, it is
essential that you adjust your speed to suit the road and traffic conditions.
Do not let the extra safety features tempt you into taking any risks when
driving.
Anti-lock brake system and traction control
ABSAnti-lock brake system (ABS)
The anti-lock brake system prevents the wheels locking
during braking.The anti-lock brake system (ABS) is an important part of the vehicle’s active
safety system.
How the ABS works
If one of the wheels is turns too slowly in relation to the road speed, and is
close to locking, the system will reduce the braking pressure for this wheel.
The driver is made aware of this control process by a pulsating of the brake
pedal and audible noise. This is a deliberate warning to the driver that one or
more of the wheels is tending to lock and the ABS control function has inter-
vened. In this situation it is important to keep the brake pedal fully depressed
so the ABS can regulate the brake application. Do not “pump”.
If you brake hard on a slippery road surface, the best possible control is
retained as the wheels do not lock. However, ABS will not necessarily gu
arantee shorter braking distances in all
conditions. The braking distance could even be longer if you brake on gravel
or on fresh snow covering a slippery surface.
WARNING
•The anti-lock brake system cannot defy the laws of physics. Slippery
and wet roads are dangerous even with ABS! If you notice that the ABS is
working (to counteract locked wheels under braking), you should reduce
speed immediately to suit the road and traffic conditions. Do not let the
extra safety features tempt you into taking any risks when driving.•The effectiveness of ABS is also determined by the tyres fitted
⇒ page 198.•If the running gear or brakes are modified, the effectiveness of the ABS
could be severely limited.
Traction control system (TCS)*
The traction control system prevents the drive wheels from
spinning when the vehicle is accelerating. The system always
includes ABSDescription and operation of the traction control system during acceleration
(TCS)
TCS reduces engine power to help prevent the drive wheels of front-wheel
drive vehicles losing traction during acceleration. The system works in the
entire speed range in conjunction with ABS. If a malfunction occurs in the
ABS, the TCS will also be inoperative.
TCS helps the vehicle to start moving, accelerate and climb a gradient in slip-
pery conditions where this may otherwise be difficult or even impossible.
WARNING (continued)
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Intelligent technology155
Safety First
Operating Instructions
Practical Tips
Technical Specifications
T h e T C S is s w i tch e d o n a u t o m a t i ca ll y w h e n t h e e n g i n e is s ta r t e d . I f n e ce s sa r y,
it may be turned on or off by briefly pushing the ESP button on the centre
console.
When the TCS is off, the warning lamp
l is lit. The TCS should normally be left
on. Only in exceptional circumstances, when the slipping of the wheels is
required, can they be disconnected using the ESP button, for example.
•With compact temporary spare wheel.•When using the snow chains.•When driving in deep snow or on loose surfaces•When the vehicle is bogged-down, to free it by rocking.
The TCS should be switched on again as soon as possible.WARNING
•It must be remembered that TCS cannot defy the laws of physics. This
should be kept in mind, particularly on slippery and wet roads and when
towing a trailer.•Always adapt your driving style to suit the condition of the roads and
the traffic situation. Do not let the extra safety afforded by TCS tempt you
into taking any risks when driving, this can cause accidents.Caution
•In order to ensure that TCS function correctly, all four wheels must be
fitted with the same tyres. Any differences in the rolling radius of the tyres can
cause the system to reduce engine power when this is not desired.•Modifications to the vehicle (e.g. to the engine, the brake system, running
gear or any components affecting the wheels and tyres) could affect the effi-
ciency of the ABS and TCS.
XDS*
Driveshaft differentialWhen taking a bend, the driveshaft differential mechanism allows the outer
wheel to turn at a higher speed than the inner wheel. In this way, the wheel
that is turning faster (outer wheel) receives less drive torque than the inner
wheel. This may mean that in certain situations the torque delivered to the
inner wheel is too high, causing the wheels to spin. On the other hand, the
outer wheel is receiving a lower drive torque than it could transmit. This
causes an overall loss of lateral grip on the front axle, resulting in understeer
or “lengthening” of the trajectory.
By using the ESP sensors and signals, the XDS system is able to detect and
correct this effect.
Through the ESP, the XDS brakes the inner wheel, thereby counteracting the
excess drive torque in this wheel. This means that the driver’s desired trajec-
tory is much more precise,
The XDS system operates in combination with the ESP and is always active,
even when the traction control, TCS, is disconnected.Electronic Stability Programme (ESP)*General notes
The Electronic Stability Programme increases the vehicle’s
stability on the road.The Electronic Stability Programme helps reduce the danger of skidding.
The Electronic Stability Programme (ESP) consists of ABS, EDL and TCS.
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Driving and the environment
158Driving and the environmentRunning-inRunning in a new engine
The engine needs to be run in over the first 1500 km.Up to 1000 kilometres
– Do not drive at speeds of more than 2/3 the maximum speed.
– Do not accelerate hard.
– Avoid high engine revolutions.
– Do not tow a trailer.
From 1000 to 1500 kilometres
–Speeds can be gradually increased to the maximum road speed
or maximum permissible engine speed (rpm).During its first few hours of running, the internal friction in the engine is
greater than later on, when all the moving parts have bedded in.
For the sake of the environment
If the engine is run in gently, its life will be increased and its oil consumption
reduced.
Braking capacity and braking distance
The braking capacity and braking distance are influenced by
driving situations and road conditions.The efficiency of the brakes depends directly on the brake pad wear. The rate
of wear of the brake pads depends to a great extent on the conditions under
which the vehicle is operated and the way the vehicle is driven. If you often
drive in town traffic, drive short distances or have a sporty driving style, we
recommend that you have the thickness of your brake pads checked by an
Authorised Service Centre more frequently than recommended in the Service
Plan.
If you drive with wet brakes, for example, after crossing areas of water, in
heavy rainfall or even after washing the vehicle, the effect of the brakes is
lessened as the brake discs are wet or even frozen (in winter). In this case the
brakes should be dried by pressing the brake pedal several times.
WARNING
Longer braking distances and faults in the brake system increase the risk
of accidents.•New brake pads must be run in and do not have the correct friction
during the first 200 km. However, the reduced braking capacity may be
compensated by pressing on the brake pedal a little harder. This also
applies when the brake pads have to be changed further on.•If brakes are wet or frozen, or if you are driving on roads which have
been salted, braking power may be lower than normal.•On steep slopes, if brakes are excessively used, they will overheat.
Before driving down a long steep slope, it is advisable to reduce speed and
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Driving and the environment159
Safety First
Operating Instructions
Practical Tips
Technical Specifications
change down into a lower gear or range (depending on the type of trans-
mission). This makes use of engine braking and relieves the brakes.
•Never let the brakes “drag” by applying light pressure. Continuous
braking will cause the brakes to overheat and the braking distance will
increase. Apply and then release the brakes alternately.•Never let the vehicle run with the engine switched off. The braking
distance is increased considerably when the brake servo is not active.•If the brake fluid loses its viscosity and is subjected to heavy use,
vapour bubbles can form in the brake system. This reduces the efficiency of
the brakes.•Non-standard or damaged front spoilers could restrict the airflow to the
brakes and cause them to overheat. Before purchasing accessories please
observe the relevant instructions ⇒page 175, “Technical modifications”.•If a brake circuit fails, the braking distance will be increased consider-
ably. Contact a specialised workshop immediately and avoid unnecessary
journeys.
Exhaust gas purification systemCatalytic converter*To maintain the useful life of the catalytic converter
– Use only unleaded petrol with petrol engines, as lead damages the catalytic converter.
– Do not let the fuel get too low in the tank. – For engine oil changes, do not replenish with too much engine oil
⇒page 188, “Topping up engine oil E”.
– Never tow the vehicle to start it, use jump leads if necessary ⇒page 225.
If you notice misfiring, uneven running or loss of power when the vehicle is
moving, reduce speed immediately and have the vehicle inspected at the
nearest specialised workshop. In general, the exhaust gas warning lamp will
light up when any of the described symptoms occur ⇒page 58. If this
happens, unburnt fuel can enter the exhaust system and escape into the envi-
ronment. The catalytic converter can also be damaged by overheating.
WARNING
The catalytic converter reaches very high temperatures! There is a risk of
fire.•Never park where the catalytic converter could come into contact with
dry grass or flammable materials under the vehicle.•Do not apply additional underseal or anti-corrosion coatings to the
exhaust pipes, catalytic converter or the heat shields on the exhaust
system. These materials could catch fire when the vehicle is being driven.Caution
Never run the fuel tank completely dry because the irregularity of the fuel
supply may cause ignition problems. This allows unburnt fuel to enter the
exhaust system, which could cause overheating and damage the catalytic
converter.
For the sake of the environment
Even when the emission control system is working perfectly, there may be a
smell of sulphur from the exhaust gas under some conditions. This depends
WARNING (continued)
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