2021-2026 Seat Leon 4 Door Driving -> Start-Stop system User Manual
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Driving -> Start-Stop system for Your Seat Leon 4 Door Fourth Generation (2021-2026)

Start and driving  
WARNING  
socket to charge the high-voltage bat-  
Start-Stop system  
tery, whenever possible page 308 .  
›››  
Switching to a different operating mode  
while driving can distract you from traffic  
conditions and cause accidents.  
The high-voltage battery charge level is  
kept at around the current level while  
driving. If you accelerate harder or in-  
crease the vehicle speed, the combus-  
tion engine starts up. When permitted by  
the driver’s demand for acceleration and  
the vehicle speed, the vehicle switches  
back to electric mode.  
=
Control lamps  
It lights up  
Note  
The Start-Stop system is available, the automatic en-  
gine shutdown is active.  
Information about the operating mode that  
is currently active is displayed on the in-  
strument cluster display, along with the  
charge level of the high-voltage battery.  
It lights up  
.
Pressing this symbol selects a lower the-  
oretical charge level. The vehicle only  
uses the battery's charge when it is  
above the selected theoretical charge  
level. The rest is kept until the end of the  
journey.  
The Start-Stop system is not available or has been  
disconnected.  
Troubleshooting  
Instructions for the driver on the instru-  
ment panel display  
The E-MODE operating mode is not  
available  
Start-Stop system deactivated. Start  
the engine manually  
The Intelligent Hybrid App allows the user to  
save electrical energy until reaching home  
(charging point) with just “one click”. If this  
option is not selected, the maximum amount  
of electrical energy will be consumed until  
the selected destination is reached. If the  
user has no active route, the function will offer  
the activation of a predictive route and BMA  
mode from the widget itself with just one  
click.  
The indicator lamp lights up in white.  
●
This indication for the driver shows that the  
The E-MODE operating mode (driving in  
electric mode) cannot be used temporarily  
because one or more conditions are not met.  
Start-Stop system cannot start the engine  
again.  
Start-Stop system: Fault! Function  
not available  
●
The conditions must be met to use the E-  
MODE operating mode page 222.  
›››  
●
There is a fault in the Start-Stop system.  
Take the vehicle to a workshop to have the  
fault repaired.  
Show the active operating mode  
The operating mode active at any given time  
is displayed on the instrument cluster display,  
e.g. .  
Description and operation  
The Start-Stop system helps you to save fuel  
and reduce CO2 emissions.  
»
223  
Driving  
●
In Start-Stop mode, the engine will automati-  
cally switch off when the vehicle stops or is  
stopping. The ignition remains switched on.  
The engine automatically switches back on  
when required.  
stopping completely (approximately 7 or 2  
km/h depending on the vehicle's gearbox).1)  
The engine has not yet reached the re-  
quired temperature for the Start-Stop mode.  
●
●
When you take your foot off the brake ped-  
The temperature selected on the climate  
control has not been reached.  
al the engine will start up again. The warning  
lamp will switch off. With the Auto Hold sys-  
tem, the engine will not start if you remove  
your foot from the brake pedal. The car starts  
when you press the accelerator pedal.  
●
The interior temperature is very high/low.  
In this scenario, the light of the     
button stays lit.  
●
Defrost function button activated  
page 155.  
›››  
●
When the ignition is switched on, the Start-  
Stop function is automatically activated.  
Park assist is switched on.  
Basic requirements for the Start-Stop  
mode  
●
The steering wheel is overly turned or is be-  
ing turned.  
Vehicles with a manual gearbox  
●
●
●
●
The driver door must be closed.  
●
●
●
If there is a danger of misting.  
After engaging reverse gear.  
In case of a very steep gradient.  
●
When the vehicle or when it is stopped, put  
The driver's seat belt must be fastened.  
The bonnet must be closed.  
it into neutral and release the clutch pedal.  
The engine will switch off. The warning lamp  
will light up. The engine can be stopped  
before stopping completely (approximately 7  
km/h).  
The engine has reached operating temper-  
●
In a traffic jam after stopping for the fifth  
ature.  
time, the engine will not stop any more.  
●
●
The reverse gear must not be engaged.  
The vehicle must not be on a very steep  
●
●
With ESC disabled.  
●
When the clutch pedal is pressed the en-  
gine will start up again. The warning lamp will  
switch off.  
After emergency braking or loss of adhe-  
slope.  
sion.  
●
●
With a trailer attached.  
The engine does not turn off for various  
reasons  
Vehicles with an automatic gearbox  
In a traffic jam after stopping for the fifth  
●
Brake until the vehicle has come to a stand-  
time, the vehicle will not stop any more.  
Before stopping the vehicle, the system veri-  
fies whether certain conditions are met. The  
engine does not switch off, in the following  
situations for example:  
still, and keep your foot on the brake pedal or  
activate the Auto Hold system so that the ve-  
hicle remains braked. The engine will switch  
off. The warning lamp will appear in the  
display. The engine can be stopped before  
●
●
When the battery charge level is low.  
While the particle filter is regenerating (die-  
sel engines).  
1)  
In the mHEV version (semi-hybrid), above 20  
km/h.  
224  
Start and driving  
. is displayed on the instrument cluster  
screen; it is also displayed in the driver infor-  
mation system, .  
Additional information related to the auto-  
matic gearbox  
CAUTION  
The Start-Stop system must always be  
switched off when driving through flooded  
areas page 238.  
›››  
The engine stops when the selector lever is in  
positions D, N and S, as well as in Tiptronic  
mode. When the parking lock button P is acti-  
vated, the engine will also remain off when  
you remove your foot from the brake. In order  
to start the engine up again the accelerator  
must be pressed, or another gear engaged or  
the brake released.  
The engine starts by itself  
When stopped, the normal system mode may  
be interrupted in the following situations. The  
engine restarts by itself without involvement  
from the driver.  
Note  
●
In vehicles with an automatic gearbox,  
you can control whether the engine should  
switch off or not by reducing or increasing  
the brake force applied. While the vehicle  
remains stopped, the engine will not stop if  
the brake pedal is slightly pressed, in traffic  
jams with frequent stopping and starting  
for example. As soon as strong pressure is  
applied to the brake pedal, the engine will  
stop.  
●
The interior temperature differs from the  
If the selector lever is placed in R while stop-  
ped, the engine will start up again.  
temperature selected on the climate control.  
●
Defrost function button activated  
page 155.  
›››  
Additional information about vehicles with  
Adaptive Cruise Control (ACC)  
●
The brake has been pressed several times  
consecutively.  
In vehicles with ACC function, the engine will  
start up again in certain operating conditions  
if the radar sensor detects that the vehicle  
ahead drives off again.  
●
●
When stopped, the brake pedal must be  
kept pressed to ensure that the vehicle  
does not move.  
The battery is too low.  
●
High power consumption.  
●
The vehicle rolls forward or backward with  
●
If the engine “stalls” with a manual gear-  
the engine off.  
box, it can be directly started up again by  
immediately pressing the clutch pedal.  
WARNING  
●
●
ESC deactivated.  
●
Never switch the engine off until the vehi-  
●
With an automatic gearbox, if the lever is  
cle is stationary. The operation of the brake  
and steering will not be fully guaranteed.  
More force will be needed to turn the steer-  
ing wheel or to brake. You could suffer an  
accident and even serious injuries.  
The accelerator pedal (automatic trans-  
placed in position D, N or S after engaging  
reverse gear, 10 km/h (6 mph) in a forwards  
direction must be reached for the system to  
be in a status to stop the engine.  
mission), or the clutch (manual transmission)  
is pressed.  
●
The steering wheel turns slightly (except  
mHEV version).  
●
To avoid injury, make sure that the Start-  
Stop system is switched off when working  
in the engine compartment page 226.  
●
When the air conditioning is activated.  
›››  
225  

Related Topics

Driving
Start and driving Driving with electric drive Operating mode selection Manual gearbox Steering SEAT Drive Profiles Driving tips General notes Cruise control system (CCS) Speed limiter ACC - Adaptive Cruise Control Lane Assist Driving Assist (Travel Assist) Emergency Assist Lane departure warning (Side Assist) with rear cross traffic alert (RCTA) and door opening warning (Exit Assist) Braking and parking Braking system Stabilisation and brake assistance systems Parking Help with parking and manoeuvring Assisted parking system (Park Assist) Parking aid parking and manoeuvring (ParkPilot) Parking System Plus Rear parking aid Trailer mode Electrically unlocking trailer hook

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