2012 Seat Mii engine overheat

139
Starting, changing gears, parking
WARNING
Driving without the brake servo may significantly increase the braking
distance and result in a severe accident.
● Never allow the vehicle to move forwards when the engine is switched
off.
● If the brake servo does not operate or the vehicle must be towed,
then the brake pedal will have to be pressed with more force given that
the braking distance will be increased when the brake servo does not op-
erate.
CAUTION
● Never make the brakes “slip” by pressing the pedal gently, if it is not
really necessary to brake. Continuously pressing on the brake pedal will
heat the brakes. This could significantly reduce braking power, increase
braking distance or even result in the total failure of the brake system.
● Reduce speed or reduce the gear when faced with steep and long
slopes. This allows you to use the engine braking effect and to reduce the
strain on the brake system. Otherwise, the brakes may overheat and fail.
Only use the brakes to reduce speed or to stop.
Note
Make use, when having the front brake pads checked, and have the rear
pads checked also. The thickness of the brake pads should be checked vis-
ually and regularly, by looking through the openings in the wheel rims or
from underneath the vehicle. If necessary, remove the wheels to check them
thoroughly. SEAT recommends visiting a Technical Service. Assisted braking systems
The assisted braking systems ESC*, ABS, EBV, BAS, ASR, TC and EDL only
operate when the ignition is switched on. They contribute significantly to in-
creasing active safety.
Electronic Stability Control (ESC)*
ESC* reduces the risk of skidding and increases the vehicle stability by
braking individual wheels under specific driving conditions. ESC* detects
critical handling situations, such as understeer, oversteer and wheelspin on
the driven wheels. The system stabilises the vehicle by braking individual
wheels or by reducing the engine torque.
The ESC* has limits. It is important to realise that the ESC* is also subject to
the laws of physics. ESC* will not be able to deal with all situations with
which drivers may be faced. For example, if the road surface changes sud-
denly then ESC* will not be useful in all cases. If the vehicle suddenly enters
a section covered by water, mud or snow then ESC* will not provide assis-
tance in the same way as on dry ground. If the vehicle loses its grip on the
ground and moves on a film of water (“aquaplaning”), the ESC* will not be
able to assist the driver to control the vehicle due to the loss of adherence
with the road surface preventing braking and steering. If the vehicle is driv-
en through series of bends at high speed, the ESC* will not always be as
effective: the vehicle reaction to aggressive driving is not the same as at re-
duced speeds.
Adjust your speed and driving style to suit visibility, and weather, road and
traffic conditions. ESC* cannot push the limits of the laws of physics; im-
prove the transmission available or maintain the vehicle on the road if a
lack of driver attention creates an inevitable situation. Otherwise, ESC* as-
sists in maintaining vehicle control in extreme situations and uses the
movements of the steering made by the driver to maintain the vehicle mov-
ing in the desired direction. If the vehicle is driven at such a speed that it
will leave the road before ESC* can intervene then the system cannot pro-
vide assistance.

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140Starting, changing gears, parking
The ABS, BAS, ASR and EDL systems are incorporated into the ESC*. The
ESC* is always on 1)
.
Anti-lock brake system (ABS)
ABS can prevent the wheels from locking during braking until just before
the vehicle stops thus helping the driver to steer the vehicle and maintain
control. This means that, even during full braking, the risk of skidding is re-
duced:
● Press and hold the brake pedal fully. Do not remove your foot from the
brake pedal or reduce braking force!
● Do not “pump” the brake pedal, or reduce braking force!
● Maintain vehicle direction when braking fully with the brake pedal.
● When the brake pedal is released or when the brake force is reduced,
ABS is turned off.
ABS control can be observed by vibration of the brake pedal and noise. You
should never expect the ABS to reduce the braking distance under any cir-
cumstances. Braking distances will increase when driving on gravel, recent
snow or on icy and slippery ground.
Brake assist system (BAS)
The brake assist system may reduce the required braking distance. The
brake assist system boosts the braking force if you press the brake pedal
quickly in an emergency. As a result, the braking pressure increases rapidly,
the braking force is multiplied and the braking distance is reduced. This en-
ables the ABS to be activated more quickly and efficiently.
¡Do not lift your foot off the brake pedal! When the brake pedal is released
or when the brake force is reduced, braking assist automatically turns off
the brake servo. Traction control system (ASR) or Traction Control (TC)
In the event of wheelspin, the traction control system ASR or TC reduces the
engine torque to match the amount of grip available. The ASR or TC makes
some situations easier, for example, when starting, accelerating or going
uphill, even in unfavourable road conditions.
Electronic differential lock system (EDL)
EDL is available when driving in straight lines under normal conditions.
When the EDL detects wheelspin, it brakes the spinning wheel and directs
the power to the other driven wheel. To prevent the disc brake of the braked
wheel from overheating, the EDL cuts out automatically if subjected to ex-
cessive loads. The EDL will switch on again automatically when the brake
has cooled down.
WARNING
Driving at high speed on icy, slippery wet ground can result in loss of ve-
hicle control and serious injury to the driver and passengers.
● Adjust your speed and driving style to visibility, road, traffic and
weather conditions. Even though the braking assist systems, ABS, BAS,
EDL, ASR, TC and ESC*, provide more security, do not take unnecessary
risks while driving.
● Braking assist systems can not overcome the laws of physics. Even
with ESC* and other systems, slippery and wet roads will always be dan-
gerous.
● Driving to quickly on wet ground can result in the wheels losing con-
tact with the ground in an effect known as “aquaplaning”. Without ad-
herence, it is impossible to brake, steer or control the vehicle.
● Braking assist systems cannot avoid accidents if, for example, the
driver does not respect safety distances or drives to quickly in difficult
conditions. 
1)
According to version

160Driver assistance systems
Malfunction in the laser sensor
If the laser sensor operation is impaired, for example due to heavy rain,
spray, snow or dirt, the City Safety Assist system function is temporarily
switched off. On the instrument panel display the control lamp  flashes.
When the fault in the laser sensor has been rectified, the City Safety Assist
system function automatically becomes available. The control lamp 
switches off.
The following conditions could prevent the City Safety Assist system from
functioning:
● Tight bends.
● Accelerator pressed all the way down to the floor.
● If the City Safety Assist system is switched off or there is a fault
⇒ page 156.
● If the laser sensor is dirty, covered or overheated ⇒ page 157.
● In the event of snow, heavy rain or dense fog.
● If there are vehicles in front.
● Vehicles changing lanes.
● Vehicles moving in the opposite direction in the same lane.
● Very dirty vehicles with a low degree of reflection.
● Presence of thick dust. 
Hill hold
Introduction
Additional information and warnings:
● SEAT information system ⇒ page 22
● Braking, stopping and parking ⇒ page 134 ●
Vehicle battery ⇒ page 193
● Wheels and tyres ⇒ page 210
● Accessories, parts replacement, repairs and modifications ⇒ page 222
● Hill hold ⇒ page 273
WARNING
The smart technology included in the hill hold cannot change the laws of
physics. Do not let the extra convenience afforded by the hill hold tempt
you into taking any risks when driving.
● Any accidental movement of the vehicle could result in serious injury.
● The hill hold is not a replacement for driver awareness.
● Adjust your speed and driving style to visibility, weather, road and
traffic conditions.
● The hill hold cannot always keep the vehicle at a standstill on a slope
or brake sufficiently when travelling downhill (e.g. on slippery or frozen
surfaces).

Warning lamps
lights upPossible causeSolution
The Start-Stop system is ena-
bled.

The Start-Stop system is ena-
bled but the engine cannot be
automatically stopped.Contact a Specialised
workshop.

The Start-Stop system cannot
start the engine.Start the engine by hand
using the vehicle's key
⇒ page 120.
There is a fault in the alternator.⇒ page 193 

175
At the filling station
Refuelling with natural gas
Fig. 108 Tank flap open:
gas filler mouth 1, filler
mouth retainer 2
Before refuelling, the engine and the ignition, mobile telephone and heat-
ing must be switched off separately
⇒ .
It is also essential to carefully read the instructions for the natural gas
pump.
The vehicle is not prepared for refuelling with liquefied natural gas (LNG)
⇒ 
. Before refuelling with natural gas, make sure to add the appropriate
type of fuel.
Opening the fuel tank cap
The natural gas filler mouth is behind the fuel tank cap, next to the petrol
filler mouth.
● Unlock the vehicle with the key or with the central locking button  situ-
ated on the driver door ⇒ page 36.
● Press on the rear area of the flap and open it. Refuelling
Problem: If the ambient temperature is very high, the natural gas pump pro-
tection against overheating disconnects this automatically.
●
Remove the plug from the gas filler mouth ⇒ Fig. 108 1
.
● Connect the pump filling nozzle to the gas filler mouth.
● The fuel tank will be full when the pump compressor automatically cuts
the supply.
● If you wish to finish refuelling in advance, press the button on the pump
to stop the flow.
Closing the fuel tank flap
● Check that the gas filler mouth retainer 2
is not trapped with the filler
nozzle. If necessary, place it in the filler mouth again.
● Insert the plug in the filler mouth.
● Close the tank flap. Make sure you hear it click into place.
WARNING
Natural gas is a highly explosive, easily flammable substance. Incorrect
handling of the natural gas can cause accidents serious burns and other
injuries.
● Before refuelling with natural gas, the filling mouth must be correctly
engaged. If you can smell gas, stop refuelling immediately.
WARNING
The vehicle is not prepared to use liquefied natural gas (LNG) and this
fuel must not be added under any circumstances. Liquefied natural gas
can cause the natural gas tank to explode resulting in serious injury. 
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224Vehicle care and maintenance
Fluids and consumables
All vehicle fluids and consumables , such as notched belts, tyres, coolant
fluids, engine oils, spark plugs and batteries are continually being devel-
oped. Therefore all fluids and consumables should be changed at a Special-
ised workshop. Technical Services are permanently informed of any modifi-
cations.
WARNING
The incorrect use or handling of fluids or consumables may result in acci-
dent, serious injury, burns or intoxication.
● Therefore, fluids must always be stored closed in their original con-
tainer.
● Never store fluids in empty food containers or bottles as other people
may accidentally drink the fluid.
● Keep all fluids and consumables out of reach of children.
● Read and observe the information and warnings given on the fluid
containers.
● Only work in the open air or in well-ventilated zones, when using
products which give off harmful vapours.
● Never use fuel, turpentine, engine oil, acetone or any other volatile
liquid in the maintenance of the vehicle. These are toxic and highly flam-
mable. They could lead to fire or explosions!
CAUTION
● Only use appropriate fluids. Never mix the fluids. Using the wrong fluids
could cause serious malfunctions and engine damage!
● Accessories and other components mounted in front of the air inlet re-
duce the cooling effect of the coolant. If the engine is running under great
strain in high outside temperatures, it could overheat.
For the sake of the environment
Leaking fluids could pollute the environment. Collect any spilt fluids in suit-
able containers and dispose of in accordance with legislation and with re-
spect for the environment. 
Repairs and technical changes
When performing repairs and technical modifications, SEAT's directives
must be observed! ⇒ 
Unauthorised modifications to the electronic components or software in the
vehicle may cause malfunctions. Due to the way the electronic components
are linked together in networks, other indirect systems may be affected by
the faults. This may significantly affect the vehicle's performance, increase
component wear and could mean that the vehicle registration documents
are no longer valid.
Your SEAT Official Service cannot be held liable for any damage caused by
technical modifications or repairs performed incorrectly.
The SEAT Official Service does not accept liability for damage resulting from
technical modifications or repairs performed incorrectly; neither is the SEAT
warranty valid in these cases.
SEAT recommends you have any technical modifications or repairs per-
formed at a SEAT Official Service and that you use genuine SEAT spare
parts ®
.
Vehicles with special accessories and equipment
The manufacturers of additional equipment guarantee that the equipment
complies with applicable laws and regulations with respect to the environ-
ment, in particular Directives 2000/53/CE and 2003/11/CE. The first direc-
tive governs the disposal of end-of-life vehicles while the second refers to
the restrictions on the marketing and use of certain dangerous substances
and preparations. 

237
Vehicle care and maintenance
Catalytic converter
The catalytic converter permits the subsequent treatment of the exhaust
gases thus reducing contaminating gas emissions. To ensure a longer work-
ing life for the exhaust system and catalytic converter in a petrol engine:
● Always use unleaded petrol.
● Never run the fuel tank completely dry.
● Do not top up with too much engine oil ⇒ page 185.
● Do not tow-start the vehicle; use the starter cables ⇒ page 273.
If you should notice misfiring, uneven running or loss of power when the ve-
hicle is moving, reduce speed immediately. Have the vehicle inspected by a
Specialised workshop. If this happens, unburnt fuel can enter the exhaust
gas system and escape into the atmosphere. The catalytic converter can al-
so be damaged by overheating.
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
on the sulphur content of the fuel used. 
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259
Practical information
● Start the vehicle engine and leave it running.
● Attach the connector ⇒ Fig. 146 9
to a 12 volt socket of the vehicle
⇒ page 117.
● Connect the air compressor with the ON/OFF switch ⇒ Fig. 146 8
.
● Keep the air compressor running until it reaches 2.0 to 2.5 bar
(29-36 psi / 200-250 kPa) ⇒ 
. Maximum operation time 8 minutes ⇒ .
● Disconnect the air compressor.
● If it is not possible to achieve an air pressure of 2.0 to 2.5 bar
(29-36 psi / 200-250 kPa), unscrew the tyre inflator tube from the tyre valve.
● Move the vehicle some 10 metres forwards or backwards so that the
sealant is evenly distributed in the tyre interior.
● Securely screw the compressor tyre inflator tube into the tyre valve and
repeat the inflation process.
● If the indicated pressure can still not be reached, the tyre is too badly
damaged. The tyre cannot be sealed with the anti-puncture kit. Do not con-
tinue driving. You should obtain professional assistance ⇒ 
.
● Disconnect the air compressor and unscrew the flexible inflator tube
from the tyre valve.
● When the tyre pressure is between 2.5 and 2.0 bars, immediately con-
tinue driving without exceeding 80 km/h (50 mph).
● After 10 minutes, Check the pressure again ⇒ page 259.
WARNING
When inflating the wheel, the air compressor and the inflator tube may
become hot.
● Protect hands and skin from hot parts.
● Do not place the hot flexible inflator tube or hot air compressor on
flammable material.
WARNING (Continued)
● Allow them to cool before storing the device.
● If it is not possible to inflate the tyre to at least 2.0 bars (29 psi /
200 kPa), the tyre is too badly damaged. The sealant is not in a good con-
dition to seal the tyre. Do not continue driving. You should obtain profes-
sional assistance.
CAUTION
Switch off the air compressor after a maximum of 8 operational minutes to
avoid overheating! Before switching on the air compressor again, let it cool
for several minutes. 
Check after 10 minutes of driving
Screw the inflator tube ⇒ Fig. 146 5 again and check the pressure on the
gauge 6.
1.3 bar (19 psi / 130 kPa) and lower:
● Stop the vehicle! The tyre cannot be sealed sufficiently with the tyre mo-
bility set.
● You should obtain professional assistance ⇒ 
.
1.4 bar (20 psi / 140 kPa) and higher:
● Set the tyre pressure to the correct value again ⇒ page 210.
● Carefully resume your journey until you reach the nearest specialised
workshop without exceeding 80 km/h (50 mph).
● Have the damaged tyre replaced. 
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