warning Seat Mii electric 2019 Service Manual

Driver assistance systems
The system is disconnected and the memo-
rised speed is del et
ed.
Lane Assist* Introduction Fig. 141
On the windscreen: field of vision of
the L ane Assist syst

em camera. The Lane Assist System helps the driver stay
in their l
ane

. This function is not suitable and
is not designed to keep the vehicle automati-
cally in the lane.
Using the camera located in the windscreen,
the Lane Assist system detects the possible
lines dividing the lanes. When the vehicle in-
voluntarily approaches a dividing line it has
detected, the system notifies the driver with a
corrective steering movement. This move-
ment can be over-regulated at any time. No warning is produced with the turn signals
activat

ed, given that the Lane Assist system
understands that a lane change is required.
System limits
Use the Lane Assist system only on large,
well-maintained motorways and highways.
The system is not available under the follow-
ing conditions:

Driving
At high speed and with the windscreen wipers
activ at
ed, the brake pads will briefly touch
the brake discs. This takes place, although
unnoticeable to the driver, at regular intervals
to improve the response time of the brakes
when they are wet.
The effectiveness of the brakes can also be
temporarily reduced if the vehicle is driven for
some distance without using the brakes when
there is a lot of salt on the road in winter. The
layer of salt that accumulates on the discs
and pads can be removed by gently apply-
ing the brakes a few times.
Corrosion
There may be a tendency for corrosion to
form on the discs and dirt to build up on the
brake pads if the vehicle is used infrequently
or the brakes are not used very often.
If the brakes are not used frequently, or if rust
has formed on the disks, it is advisable to
clean off the pads and disks by braking firmly
a few times at a moderately high speed ››› .
F ault in the br

ake system
If the brake pedal travel should ever increase
suddenly, this may mean that one of the two
brake circuits has failed. Drive immediately to
the nearest specialised workshop and have
the fault repaired. Drive there slowly and re-
member that you will have to apply more pressure on the brake pedal and allow for
longer st

opping distances.
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low. The brake fluid
level is monitored electronically.
Brake servo
The electromechanical brake servo increases
the pressure that you exert when you press
the brake pedal. It only works when the vehi-
cle’s ignition or drive system is switched on. WARNING
Any anomaly in the brake system can in-
cr ease the br

aking distance, with the re-
sulting risk of an accident.

Driving
WARNING
Observe the safety warnings ››
› in Con-
tr ol and w
arning lamps on page 70. Brake assist systems
Electronic Stability Control (ESC)*
The ESC helps t
o impr

ove safety. It reduces
the tendency to skid and improves the stabili-
ty and roadholding of the vehicle. The ESC
detects critical handling situations, such as
vehicle understeer or oversteer, or wheelspin
on the driving wheels. It stabilises the vehicle
by braking individual wheels or by reducing
the engine torque. The warning lamp will
flash on the instrument panel when the ESC is
intervening !.
The ESC includes the anti-lock brake system
(ABS), the hydraulic brake assist (HBA), the
traction control system (ASR) and the elec-
tronic differential lock (EDS)
ESC also helps stabilise the vehicle by
changing the torque.
Anti-lock brake system (ABS)
ABS prevents the wheels from locking up un-
der braking until the vehicle has reached a
virtual standstill. You can continue to steer the
vehicle even when the brakes are on full.
Keep your foot on the brake pedal and do not pump the brakes. You will feel the brake pedal
pul
sat

e while the ABS is working.
If the running gear or brake system is modi-
fied, the effectiveness of the ABS could be se-
verely limited.
Hydraulic Brake Assist (HBA)*
The brake assist system can reduce the re-
quired braking distance. The braking force is
automatically boosted if you press the brake
pedal quickly in an emergency. You must
keep pressing the brake pedal until the dan-
ger has passed.
Traction control system (ASR)
In the event of wheelspin, the traction control
system reduces the engine torque to match
the amount of grip available. This helps the
car to start moving, accelerate or climb a
gradient.
Electronic differential lock (EDL)*
When the EDL detects wheelspin, it brakes
the spinning wheel and directs the power to
the other driven wheel. This function is active
up to approximately 100 km/h (62 mph).
To prevent the disc brake of the braked wheel
from overheating, the EDL cuts out automati-
cally if subjected to excessive loads. The ve-
hicle can still be driven. The EDL will switch on
again automatically when the brake has
cooled down. Electronic brake pressure distribution
(EBV)
In all vehicl
es, when the brakes are applied,
the centre of gravity of the vehicle moves for-
ward. As a consequence, there is a danger
that the rear wheels may lock due to their low
traction. The electronic brake pressure distri-
bution controls the brake pressure for the rear
wheels and ensures that this pressure is dis-
tributed optimally between the front and rear
axles. Under normal circumstances it pre-
vents the rear part of the vehicle from skid-
ding due to excessive braking of the rear
wheels. The function of the electronic brake
pressure distribution is incorporated in the
ABS function.
Electromechanical brake servo (eBKV)
With the ignition switched on, the electrome-
chanical brake servo supports the force of
the foot by increasing the pressure that the
driver exerts on the brake pedal. After discon-
necting the ignition, the assistance of the
brake servo is progressively reduced. Once
stopped, immobilise the vehicle to prevent it
from moving ››› page 159.
If the electromechanical brake servo does
not work, the yellow control lamps

Braking and parking
If the electromechanical brake servo is not
w orking, the br
ake pedal must be pressed
harder, as the braking distance increases due
to the lack of assistance from the servo brake.
Brake blending
The brake energy recuperation can generate
a braking effect ››› page 139. This braking ef-
fect depends on the selected driving pro-
gramme and the level of charge of the high-
voltage battery. If the braking effect caused
by the recuperation is very intense, the vehi-
cle’s brake lights with turn on. The electric en-
gine, when operating as an alternator, can
generate braking torque on the front wheels
based on the RPM and the temperature and
charge level of the high-voltage battery.
These variable parameters cause fluctuating
electric decelerations which are hydraulical-
ly compensated according to the driver’s de-
sires. This function is called “brake blending”
and it combines mechanical braking with the
engine brake effect. WARNING
Driving at high speed on icy, slippery wet
gr ound can r

esult in loss of vehicle control
and serious injury to the driver and passen-
gers.

Driving
WARNING

Driving
An obstacle was detected in the collision
ar ea
An obst
acle was detected in the segment
Zone behind the vehicle registered
The optical parking system is an extension of
the parking distance warning system
››› page 161.
The radio screen displays the area behind
the vehicle recorded by the sensors. Any ob-
stacles are displayed in relation to the vehicle
››› .
Connect the indication

High-voltage battery
Practical tips
High-v olt
age battery
Safety warnings relating to the high-voltage network and the high-voltage battery Introduction Fig. 146
Warning signs (schematic representa-
tions):  High-v olt

age components.  General
high-voltage warning sign.  High-voltage battery
warning sign. Fig. 147
When charging, in the engine com-
partment: hot surf ace w

arning. Overview of the high-voltage system
The high-v
olt

age system is made up by,
among others, the following components:

Practical tips
qualified technical staff, trained according to
the SEAT guidelines ››
› page 178 .
Handling the warning signs and stickers
››› page 208.
General high-voltage warning signs
The high-voltage warning signs ››› Fig. 146 
and  warn of the existence of high electrical
voltage ››› . The following vehicle parts may
come with these w arning signs:

Practical tips

Its lights up yellow. A text mes-
sage will al
so appear on the in-
strument panel displ
ay.
The Eco or Eco+ driving pr ofil
e will be active. The
power is reduced and certain consumers are auto-
matically switched off, such as the air conditioning
system. The vehicle may already be travelling in re-
serve mode.
The high-voltage battery charge has reached the re-
serve level. The vehicle autonomy will only be of a
few kilometres.
Charge the high-voltage battery immediately. 
Its lights up yellow.
The power is reduced and there is very little autono-
my.
A t e

xt message will also appear on the instrument
panel display.
The maximum driving speed is limited to 80 km/h (50
mph). The Eco+ driving profile will be activated.
The high-voltage battery is discharged. There is only
sufficient autonomy for a few hundred metres. Stop
the vehicle in a safe place. Charge the high-voltage
battery immediately. The control lamps light up together when the
ignition is s
wit

ched on and should turn off af-
ter approximately 2 seconds. This is the time
taken for the function check. WARNING
Observe the safety warnings ››

› in Con-
tr ol and w
arning lamps on page 70. Introduction
Fig. 148
On the vehicle floor: location of the
high-v olt

age battery. The vehicle’s electric engine is operated by
the high-v
olt

age battery, which is located on
the vehicle floor ››› Fig. 148.
The high-voltage battery can be charged im-
mediately or in a deferred manner
››› page 172. Always bear in mind the safety
warnings ››› .
Bef or

e charging the battery, disconnect the
drive system ››› page 142.
Charge options

High-voltage battery
Batteries age based on their use and their
oper ating time
. It is advisable that you know
certain details regarding the correct handling
and care of the high-voltage battery so this
remains in good condition for longer and can
be used in a reliable manner. Carefully read
the following information and take into ac-
count the indications when using the vehicle. WARNING
If the battery is charged in an inappropriate
manner , if no consider

ation is given to the
general safety measures, power sockets
and charging cables in poor condition are
used or the high-voltage battery is used in
an inadequate manner, this could lead to
short circuits, electrical shocks, explosions,
fires, burns and serious injuries, even death.