BYD L3. Service Manual — part 4

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-45

If the child protection device is equipped
with top belt, please fix top belt to
anchoring device.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-46

The child protection device with top
belt

Fix the child protection device with seat
belt or ISOFIX rigid fixing anchor and
remove the headrest.

Open the fixing anchor support cover,
fasten the hook to fixing anchor support
and fix the top belt firmly.

Be sure to fasten top belt.

1. Hook

2. Top belt

3. Fixing anchor support

Reinstall the headrest

When installing the child protection
device in the front row seats

To install the child protection device on
the front row chair on the front row seat
with locking buckle, please follow
installation instruction provided by the
child protection device the manufacturer.

Notes on the child protection device

●

Never stretch the shoulder seat belt
to the full to prevent seat belt from
entering into ALR locking model.

●

In ALR mode, seat belt can
only be retracted, which will
injure or discomfort a child.

●

The children should never
tamper with seat belt, otherwise
it might cause severe injury or
even death to them.

●

When installing the child protection
device

Please follow the instruction in the
child protection device installation
manual to fix the child protection
device firmly. If the child protection
device is not fixed properly, emergent
braking or accident might cause
severe injury or death to a child.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-47

When Installing Youth Seat (auxiliary)

1 If the driver’s seat impedes proper
installation of the child protection device,
please install the child protection device
on the right side seat in the back row.

2 Do not install the child seat or youth
(auxiliary) seat facing forward on the
front row seat unless there is no other
choice. When installing, move the seat
backward as far as possible. Otherwise,
inflating air bag might cause severe
injury or even death.

When installing the child protection
device

Never install a back seat the child
protection device on the front seat.

Otherwise, impacting strength caused
by rapidly inflating airbag might cause
severe damage or death to a child.

The warning tag on the instrument panel
on the passenger side reminds you not
to install backward-facing the child
protection device on the front row seat.

1. When installing youth (auxiliary)

seat, please make sure that
shoulder seat belt crosses the
middle of a child’s shoulder. seat
belt should be kept away from a

child’s neck but should not come off
easily. Otherwise, it might cause
severe damage or even death to a
child In the case of emergency
braking or accident.

2. Ensure that seat belt and belt head

are locked and seat belt is not
twisted.

3. Push and pull the child seat in

different directions to ensure that it
is secured.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-48

4. Please

follow

the

installation

instruction provided by the child
protection device the manufacturer.

2. Please fix the child seat to anchoring
device correctly

When using a lower anchoring device,
please ensure there is no foreign object
around the anchoring device and the seat
belt is not stuck behind the child seat.
Ensure that the child protection device is
fixed

firmly.

Otherwise,

emergency

braking or accident might cause severe
injury or even death to a child.

Airbag Restraint System
(if installed)

Airbag

restraint

system,

which

belongs to Supplemental Restraint
System (SRS), is a supplementary
device to seat belt. The airbag
restraint system provides additional
protection for the head and the chest
of the drivers and passengers to
reduce injury or death in an accident
of head-on collision.

The airbag restraint system, which is a
component of the whole passive safety
protection system of a car, cannot
substitute the seat belt. Please note that
only when working together with the
seat belt, the airbag restraint system can
provide

the

maximum

protection.

Therefore, for the safety of you and your
family, please pay attention to “notes”
and “friend tips” in this section.

FRIENDLY TIPS

● Always wear seat belt while

driving!

● Please maintain correct sitting

position so that the seat belt and
safety and the airbag restraint
system may provide the maximum
protection!

● For a child, the back row seat is a

safety position!

● Never try to remove or install safety

bag components by yourself!

Triggering condition of airbag restraint

Triggering condition of airbag restraint is
as follows: In the case of a severe
accident of head-on collision, the safety

air bag system will be triggered. In the
case of a special collision accident, the
air bag system might also be triggered.

In the case of slight head-on collision,
side-on collision, rear-end collision or
turnover, the air bag system will not be
triggered usually. In these cases, the
drivers and passengers are protected by
seat belt.

A crucial factor to trigger the airbag
restraint

system

is

as

follows:

Deceleration curve generated by collision
and obtained by ECU and set value are
compared and judged in an all-around
way. If the car deceleration signal
generated and detected by collision is
lower than reference value preset in ECU,
the safety air bag will not be triggered,
although the car might have been
deformed severely in an accident.

ECU of BYD airbag restraint system is
set in full consideration of misuse and
road condition in China which is often
experienced. However, considering that
collision accidents are caused by various
factors, please strictly comply with the
instruction to use the car in a correct way

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-49

and avoid misuse. Otherwise, the
expected effect of the airbag restraint
system may not be achieved.

Safety air bag system components

L3 car air bag safety system mainly
includes the following components as
shown in the above figure.

1. Front-end collision sensor

2. SRS ECU

3. SRS warning light

4. Clock spring

5. The driver’s air bag module (if
installed)

6. Side-on collision sensor (if installed)

7. The front row seat side air bag
module (if installed)

8. Curtain type air bag module (if
installed)

9. The front row passenger air bag
module (if installed)

10. Seat belt warning sensor (if
installed)

The driver’s air bag and the front row
passenger air bag (if installed)

If your car is equipped with the front side
supplemental restraint system (SRS
AIRBAG), including the driver’s safety
air bag and the front row passenger air
bag, air bag will be inflated to help
protect the head and the chest of you
and the front row passenger to reduce
injury. In the case of a medium or severe
head-on collision during driving.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-50

How the front side air bag works

In the case of a medium or severe
head-on collision accident, the sensor
will detect dramatic deceleration of the
car and send signal to the control device
to inflate the front air bag immediately.

In the case of head-on collision, the seat
belt may help fix the lower part of your
body and your main body to keep you
where you are. That is, the air bag
provides an air cushion to stable and
protect your head and chest.

As both air bags use the same sensor,
they are usually inflated at the same
time. However, only one air bag is
inflated sometimes.

The reason might be that collision
extension is an edge value or a critical
value which causes air bag inflation. At
this time, the seat belt will provide main
protection function while the air bag only
provides very limited auxiliary protection.
At this time, the seat belt will provide
main protection function while the air
bag only provides very limited auxiliary
protection.

The front air bag will be discharged
immediately after being inflated. In this
way, it will not affect the driver’s vision or
ability to control the steering wheel or
other control devices.

The air bag can be inflated within
fractions of a second to provide
additional protection for the driver and
the passengers in an accident.

The air bag gives out a big sound when
being inflated but does not cause injury
usually (tinnitus or temporary deafness
might be caused, which, however, will
recover soon). After collision, you might
see fog-like objects, which are actually
powder on the surface of the air bag.
Although the powder is non-toxic,
passengers contracted with respiratory
diseases might feel a temporary
discomfort. In this case, please leave
the car as soon as possible if it is
allowed by traffic safety.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-51

Notes on Repair of the Front Air Bag

In the following cases, please contact BYD
authorized service station immediately.

●

All air bag modules of SRS airbag
restraint system are inflated.

●

An accident which occurs at the
front side of the car (as shown in
the shade of the figure) is not
enough to inflate SRS air bag.

●

The cross section of steering wheel
liner or the cover of the front row
passenger air bag (as shown in the
shade in the figure) is scratched,
cracked or damaged.

The Front Row Seat Side Air Bag (if
installed)

If your car is equipped with the front row
seat side air bag, the air bag will be
inflated to protect the upper body of the
driver and the front seat passenger to

reduce injury In the case of medium or
severe side collision.

Curtain Type Air Bag (if installed)

If your car is equipped with curtain type
air bag, the air bag will be inflated to
protect the upper body of the driver and
the front seat passenger to reduce injury
In the case of medium or severe side
collision.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-52

Notes on Repair of Side Air Bag

In the following cases, please contact
BYD

authorized

service

station

immediately.

●

SRS side air bag and air curtain
have been inflated.

●

An accident which occurs at car
door (as shown in the shade of the
figure) is not enough to inflate SRS
air bag.

●

The surface of the seat which is
equipped with side air bag (as
shown in the shade in the figure) is
scratched, cracked or damaged.

●

Decoration (lining) part of pole A,
roof longitudinal beam and pole C
which are equipped with curtain
type air bag (as shown in the shade
in the figure) is scratched, cracked
or damaged.

Safety air bag warning light (if
installed)

The air bag system is controlled by
ECU and has self-diagnosis function,
which

indicates

system

status

through

warning

light

on

the

instrument panel.

● When “start/stop” switch is in

IGNITION ON mode, the air bag
lamp will be lighted for about 5
seconds and then turned off for
about 5 seconds to indicate
normal system.

● If the air bag has been turned off

by

BYD

authorized

service

station, the warning light will
react as above but will not have
protection function.

The warning light system is used to
monitor air bag ECU, bumping sensor,
charging

device,

warning

light,

connecting line and power. (Refer to
Chapter 1-

5 “Maintenance Reminder

and warning buzzer”.)

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-53

NOTICE

The following cases indicate that
fault exists in the airbag restraint
system:
● When “start/stop” switch is in

IGNITION ON mode, the warning
light is not lighted.

● When “start/stop” switch is in

IGNITION ON mode, the warning
light will not turn off or will be
lighted again after being turned off
after 5 seconds.

● When “start/stop” switch is in OFF

mode, the warning light will be
lighted.

● The warning light will be lighted or

blink while the car travels.

FRIENDLY TIPS

If fault occurs, please contact BYD
authorized

service

station

for

examination of the air bag system.
Otherwise,

the

airbag

restraint

system might not work normally In
the case of an accident!

Indicator lamp for unfastening of co-
driver seat belt (if installed)

If your L3 car is equipped with seat belt
warning sensor, you will see an indicator
lamp for unfastening of co-driver seat
belt on the No.1 switch set on the central
control panel of the instrument panel (as
shown in the black shade in the above
figure). It is used together with seat belt.
When a passenger who sits on the
co-driver seat does not wear seat belt,
the lamp will be lighted and give out
alarm sound to remind him. After the
passenger buckles up the seat belt, the
lamp will turned off. If no passenger sits
on the co-driver seat, the lamp will
remain turned off.

When air bag might not be triggered

Non-head-on collision with wall

Collision with concrete column, tree

or other long and thin objects

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-54

In the above stated cases, air bag might
not be triggered. The figure above is an
example.

In the following cases, the front air bag
might not be triggered. If your car is
equipped with the front row seat side air
bag and curtain type air bag module, the
front air bag might not be triggered.
However, the front row seat side air bag
and curtain type air bag might be
triggered.

When air bag might be triggered

Bump into the lower part of rear

end of large truck

Rollover

Rear end collision

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-55

In the above stated cases, air bag might
be triggered. The figure above is an
example.

NOTES

● As air bag is designed to match a

specified car type, any modification
to suspension, tire size, bumper,
chassis and OEM equipment will
cause unfavorable effect on safety
air bag. Do not use any part of the
airbag restraint system on other
types of cars. Otherwise, it might
cause

invalidation

of

airbag

restraint system and injury.

● Please wear seat belt and maintain

correct sitting position while the
car is traveling. If you do not wear a
seat belt or maintain an incorrect
sitting position while the car is
driving, an accident which triggers
airbag

restraint

system

might

increase your injury risk.

● It is important for a driver to keep

his chest away from the steering
wheel for at least 25 cm, which will
provide

the

most

effective

protection for the driver when the
system is triggered. That is, the
front seat and the head rest should
be adjusted in accordance with
body size of a driver. The driver
should slightly bend his arms to an

extent reaching almost straight
condition.

● Do not paste or place and objects

or decoration on the surface of the
steering wheel cover and the
surface near the safety air bag on
the right side of the instrument
panel. The two places can only be
cleaned with dry or slightly wet
cloth. Do not strike the two places
with force.

● The children are prohibited to sit

on the front row seat without any
protection. Otherwise, air bag
triggered in an accident might
cause severe injury.

● There should be no other persons,

animals or objects between the
driver/the front seat passenger and
the safety air bag. It is very
dangerous for a child who is
embraced by an adult sitting in the
front row.

● For example, telephone support,

cup, ash tray and any other fixture
are prohibited to be installed on the
cover of the safety air bag or within
its function scope. Otherwise, the
air bag triggered in an accident
might increase injury risk.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-56

● It is prohibited to alter any

component of the airbag restraint
system, including corresponding
labels.

● Only BYD authorized service

station can operate on the safety
air bag, including removing it for
repair or other parts (for example,
removal of the steering wheel).

● Please replace the airbag restraint

system within 15 years since
manufacture date of the car (as
shown on automobile certificate
and

maintenance

manual).

Replacement must be conducted
by BYD authorized service station.
If you have replaced a part of the
air bag system before the date,
please make records on the service
manual.

● The safety air bag can provide

accident protection function once
only. Once the air bag is triggered
or damaged, the system must be
replaced.

● When selling the car, please hand

over all related document to the
new owner. If the safety bag is
turned off, please hand over related
document to the new owner.

● When disposing any part of the car

or the airbag restraint system,
please

observe

related

safety

procedure and disposal procedure.
BYD authorized service station is
familiar with these regulations.
Maintenance

manual

gives

a

detailed description of disposal
procedure.

● The

airbag

restraint

system

provides

strong

interference

resisting and disturbance resisting
capability

against

surrounding

electromagnetic interference and
electromagnetic

disturbance.

However, in order to avoid an
accident, please use the car in
accordance

with

national

regulation

on

electromagnetic

environment.

● BYD L3 airbag restraint system has

fully considered various misuses
and road conditions which are
often

experienced

in

China.

However, in order to prevent an
accident.
Please avoid strong impact on
chassis or drive in bad road
condition.

Turn off Safety Air Bag

The driver/the front seat passenger
safety air bag can only be turned off in
the following cases.

●

Although the driver seat position is
adjusted properly, the distance
between the steering wheel center
and the driver’s chest is less than
25 cm.

●

It is necessary to install special
equipment for the disabled within
the working scope of the steering
wheel.

●

The position of the front row
passenger seat is adjusted due to
some reason, which is not within
the position scope set in factory.

To turn off the airbag restraint system,
please contact BYD authorized service
station. After turning off a safety air bag,
BYD authorized service station will
attach label and make records on
maintenance manual accordingly.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-57

FRIENDLY TIPS

If it is necessary to turn off safety bag
in a special case, please make sure to
contact

BYD

authorized

service

station. Otherwise, there might be a
risk of severe injury or death!
In

order

to

resume

protection

function of the air bag, please turn on
the air bag which has been turned
off!

Others

●

Please read the manual carefully. If
you want to sell your car or dispose
it, please tell the new owner or the
disposing company that your car is
equipped with airbag restraint
system and advise them to read the
manual carefully.

●

After the airbag restraint system
comes into effect, do not directly
touch the safety air bag module
component (otherwise you might be
scalded or discomforted). Please
contact BYD authorized service
station for treatment. Once the
airbag restraint system comes into

effect, please replace it with a new
air bag system.

●

The airbag restraint system only
comes into effect In the case of
severe head-on collision.

FRIENDLY TIPS

If turning on/off of indicator lamp of
SRS is ignored, once the air bag does
not work normally, it might cause
severe injury or death.
If SRS indicator lamp reminds you of
a potential risk, please contact BYD
authorized service station for car
examination immediately.

Maintenance of Air Bag

Your airbag restraint system actually
requires no maintenance. There is no
parts requiring your maintenance. In the
following cases, please have your car
examined and repaired.

1. If the air bag has experienced inflation.
If the air bag has experienced inflation,
the air bag and its controller as well as
related parts have to be replaced. Never

try to remove or replace any air bag by
yourself. Please leave the work to BYD
authorized service station.

2. If SRS indicator lamp reminds you of
device problem. Please contact BYD
authorized service station for car
examination immediately. If you ignore
the reminding from the indicator lamp,
the air bag might not be inflated when
necessary.

Only trained personnel can deal with it.
It is prohibited to remove any air bag
component off the car. For repair or
trouble-shooting of the airbag restraint
system, please contact BYD authorized
service station.

Supplementary Safety Notes

1. Never try to remove the air bag. Only
the air bag in the normal operation can
provide the best protection.

2. Never tamper with air bag component
or wiring. Tampering might trigger the air
bag accidentally and cause severe injury.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-58

Steering Wheel

To change the angle of the steering
wheel, please hold the steering wheel
and press steering column adjustment
handle, tilt the steering wheel to a
desired angle and then recover the
handle to its original position.

FRIENDLY TIPS

● Do not turn steering wheel while the

car is travelling. Otherwise, the
driver

might

operate

the

car

incorrectly and cause an accident.

● After adjusting the steering wheel,

please try to move it upward and
downward to check whether it has
been locked firmly.

Control switch of steering wheel
audio (if installed)

Press (hold) “+”/“-” to increase
volume/reduce

Press (hold) “+”/“-” to increase
volume/reduce

volume

(consecutively);

Repeat

pressing

“∧”/“∨” key rapidly more than once
to search for previous/next strong
signal radio station automatically;
Press

“^”/“v”

key

to

enter

next/previous strong signal radio
station automatically in radio mode;

Increase/decrease

frequency

in

DVD/USB mode to fast forward/fast
reverse; Press MODE key shortly to
switch mode in the sequence of
FM→AM→DVD (if MODE interface is
filled by USB, content in USB device
will be played, If it is empty,
multimedia file in audio device will be
played).

Press MODE key for 3 seconds to
enter audio OFF status. Press MODE
to turn on the audio.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-59

Power-Driven

External

Rearview

Mirror

The driver can use mirror direction
conversion button on the power-driven
external rearview mirror to adjust the
powered-driven external rearview mirror
to a position where you can see the car
side.

Foot lamp of external rearview mirror (if
installed)

1. When the car turns from anti-theft
condition to non-anti-theft condition, the
foot lamp of external rearview lamp will
remain on for 15 seconds; When the car
turns from non-anti-theft condition to

anti-theft condition, the foot lamp will
turn off.

2. In the anti-theft condition, when the
key enters detection scope, the foot
lamp will remain on for 15 seconds; In
the anti-theft condition, when the key
does not enter detection scope, the
lamp will remain off.

Folding of external rearview mirror (if
installed)

When the car goes through a narrow
space, the driver might operate the
folding button on power-driven external
rearview mirror switch to fold the
external rearview mirror in order to pass
the space successfully. Press the folding
switch again after passing the space to
resume the rearview mirror to normal
condition.

FRIENDLY TIPS

Do not adjust rearview mirror while
the car is travelling. Otherwise, the
driver

might

operate

the

car

incorrectly and cause an accident.

Power-driven

external

rearview

mirror controller

Use the switch to adjust external
rearview mirror.

1. Selection switch

— to select the

external rearview mirror to be adjusted.
Press the switch to L (left) or R (right).

2. Control switch

— to adjust the

external rearview mirror
Press the switch in the desired direction.

3. Folding button (if installed)

— Press

the button to fold the external rearview
mirror. Press it again to unfold the
external rearview mirror.

L3

Owner’s Manual

Seats, Seat Belts, Steering Wheels, the Child Seat and Rearview Mirrors 1-60

When the whole car is powered up,
please adjust the mirror.

NOTES

If the rearview mirror is frozen, do not
operate the controller or wipe the
surface of the external rearview
mirror. Please use spray type ice
scraper to remove ice of the surface.

Internal Rearview Mirror

Adjust the rearview mirror to a
position where you can see the rear
part of the car.

When driving the car at night, please
pull the lever towards you to reduce

reflection of headlight from following the
vehicles.

Driving in day

—the lever remains at

position 1

In this position, reflection from the
rearview

mirror

provides

good

sharpness.

Driving at night

—the lever remains at

position 2.

Please remember, in order to reduce
glare, please reduce sharpness of the
rearview mirror to some extent.

Starting condition of internal rearview
mirror with direction the indication
function (if installed):

Ignition switch is at “ACC” or “ON”
position.