BYD F7-1, F7-2, F7-3. Service Manual — part 8

BYD F7-1, F7-2, F7-3

Owner’s Manual

Self Maintenance 6-7

Friendly Tips

The battery may produce
flammable and explosive
hydrogen gas.



When using tools, do not let the

battery produce sparks.



Do not smoke or light matches

near the battery.



The electrolyte contains toxic

and corrosive sulfuric acid.



Prevent electrolyte contacting

with eyes, skin or clothing.

Do not drink the electrolyte.



Wear safety goggles when

working near the battery.



Do not let children approach the

battery.

View the indicator window of the
battery to check the status of the
battery. The battery label is marked
with the meaning of the colors of the
indicator window.
If you need to connect the battery to
another charger, the positive and
negative cables should be
disconnected to prevent damage to

the vehicle electrical system.

Tire
For safe driving, the type and size of
the tires must be suitable for your
vehicle, and have tread patterns in
good condition and proper tire
pressure. The following pages will
describe how and when to check tire
pressure, how to check tire damage
and wear, and the method of
changing tires in detail.

Warning



Tires of excessive wear or
insufficient tire pressure will
cause accidents and personal
injury or death.



Always comply with all
instructions on the tire inflation
and maintenance in the
Owner’s Manual.

Inflation
Keep tires properly inflated to ensure
optimized maneuverability, tire life
and driving comfort. Underinflated

tires wear unevenly, the manipulation
and fuel economy will be impaired,
and may leak due to overheating.
Hyperinflated tires make the ride
uncomfortable, and the tires are
easily damaged and worn unevenly
due to uneven pavement.
It is recommended that inspect the
tires visually everyday. If you think
that certain tire is too low, test with the
tire gauge immediately.
Measure the tire pressure with tire
gauge at least once a month. Even if
the tires are in good condition, the tire
pressure also may decrease by 7~15
kPa (0.07~0.15kgf/cm

2

) a month.

Remember to check the spare tire at
the same time.
The tire pressure should be measured
when the tires are in cold state. This
means that wait for at least three
hours after stopped and then
measure the pressure. If you need to
drive before measuring tire pressure,
the tires still can be considered as

BYD F7-1, F7-2, F7-3

Owner’s Manual

Self Maintenance 6-8

"cold" as long as the driving distance
doesn’t exceed 1.6km.
If you check tire pressure when the
tires are in hot state (after driving a
few kilometers), it is normal that the
pressure readings are 30~40kPa
(0.3~0.4kgf/cm

2

) higher than the

readings in cold state; do not deflate
in order to achieve the tire pressure
reading stated in cold state, which will
lead to insufficient tire pressure.
You need to bring your own tire gauge
and check tire pressure with it every
time. In this way, you can easily
determine whether the tire pressure
reduction is caused by the tire or the
difference between the different tire
gauges.

Friendly Tips

The recommended tire pressure
is attached to the tire info sign on
the door frame at driver's side,
which indicates the
recommended cold tire pressure.

Tubeless tires feature self-enclosed
function if punctured. However, since
the leak is usually very slow, the
leaking position should be located
carefully as long as the tire pressure
starts reducing.

Inspection
When checking the tire inflation every
time, also check whether the tires
have damage, foreign matter piercing
and wearing.
You should look for:
1. Tread or side damage and heave;

replace the tires in any case.

2. Scratches, cracks or broken on the

sides of tires; replace the tires if tire
cloth or cord thread is found.

3. Excessive tread wear.

The inside of the tire is cast with wear
mark. When the tread wears here,
you can see a ribbon marker crossing
the tire tread. This means that the
tread thickness is less than 1.6mm.
The tires worn to such a degree have
weak adhesion on slippery roads. If
the tread has three or more wear
marks, the tire should be replaced.
Maintenance
In addition to proper inflation, correct
wheel alignment also helps to reduce
tread wear. If

the tire isn’t worn

unevenly, please ask BYD authorized

Sign position mark

BYD F7-1, F7-2, F7-3

Owner’s Manual

Self Maintenance 6-9

service station to check the wheel
alignment.
Before delivery of the car, the tires
have been balanced; however, before
the tires are worn, you may need to
re-balance the tires. If you feel
continuous vibration while driving,
please ask BYD authorized service
station to check the tires. If a tire has
been repaired, the tires must be
re-balanced.
Before installing new tires, be sure to
let the installer balance the tires, so
that the ride comfort and tire life will
be increased. Dynamic balancing or
"idle" balancing has been performed
for the original tires of your car before
delivery. It is best to ask the installer
to perform the dynamic balancing
when installing new tires.

Warning

Improper wheel balance weight
will damage the aluminum alloy
wheels of your car. Therefore,
only BYD genuine original wheel

balance weight can be used to
keep balance.

Replacing tires and wheels
The original tires of the car are
selected to maximize vehicle
performance, and provide you with
the best combination of
maneuverability, ride comfort and
service life at the same time. Please
replace with radial tires of same size,
load range, rated speed and
maximum cold tire pressure (marked
on the tire side). Mixing radial tire and
twill tire will reduce the braking
capacity, driving force (traction) and
steering precision of the car.
Installing improper tires will affect the
flexibility and stability of the vehicle,
and may lead to accidents and
casualties.
It is best to replace the four tires at the
same time; if it is impossible or
unnecessary, replace the front tires or
rear tires in pair. Replacing only one
tire will affect the maneuverability of

the car.
ABS (Antilock Braking System) works
through comparing wheel speeds. It is
required to replace the tires with the
same size as the original tires,
because the tire size and structure will
affect wheel speed and may lead to
incoordination of the system.
If the wheels should be replaced,
ensure that the specifications of the
new wheels match the specifications
of the original wheels. The new
wheels are available in BYD
authorized service station. Before
replacing the tires, please consult
BYD authorized service station.

Friendly Tips

Please comply with the
following instruction; otherwise,
it may cause serious accidents.



Don’t use radial tire, bias
belted tire or diagonal-ply tire
to the car, otherwise it may
cause typical operation
danger and make the car out

BYD F7-1, F7-2, F7-3

Owner’s Manual

Self Maintenance 6-10

of control.



Don’t use the other tire size
other than the manufacturer’s
recommendation, otherwise it
may cause a typical operation
danger and make the car out
of control.

Skid chain
The skid chain is only used for
emergency or driving in specific
regions expressly provided by law.
Skid chain should be installed on front
wheels. Be careful when driving
vehicle equipped with skid chain on
icy road. Some skid chains may also
damage the vehicle's tires, wheels,
suspension and body. Please select
thin skid chain to leave enough space
between the tire and other parts in the
wheel arch. Please carefully review
and read the assembly drawings of
the part and other instructions of the
skid chain manufacturer. Before
purchasing and installing the skid
chain, please consult the BYD

authorized service station.
After installing the skid chain, drive on
icy road at the speed under 30km/h.
In order to minimize the wear of the
tires and skid chain, do not install skid
chain when driving on icy road.

Friendly Tips



The driving speed should not
exceed 30km/h or the lower
speed limit prescribed by the
tire chain factory.



Drive carefully and pay
attention to the bulge objects,
holes and a sharp turn, which
may result in the vehicle
jumping.



When using the tire chain,
please avoid a sharp turn or a
locked wheel braking, which
could adversely affect the
operation of the car.



When driving the car with tire
chain, you should be careful.
Reduce speed before making
a turn to avoid losing control

of the car; otherwise it may
result in an accident.

Car storage
If the car will be parked for long-term
(one month or more), make the
following preparations. Proper
preparation can help prevent
deteriorating of car condition, and
restart the car easily. If possible, park
your car indoors.
1. Add fuel;
2. Replace the engine oil and filter;
3. Thoroughly clean and dry the body

exterior;

4. Clean the interior of the car, and

ensure that the carpets and pads
are completely dry;

5. Release the hand brake. Set the

transmission in Reverse position
(manual transmission models) or in
Park position (automatic
transmission models);

6. Block the rear wheels;
7. If the car will be stored for a long

time, use the jack to hold up the

BYD F7-1, F7-2, F7-3

Owner’s Manual

Self Maintenance 6-11

body, so that the tires are off the
ground;

8. Slightly open a window (if it is

stored indoors);

9. Disconnect the negative pile head

of the battery;

10. Underlay the front wiper arm with

a folded towel or cloth, to avoid
contacting with the windshield;

11. In order to reduce adhesions,

spray silicone lubricant on all
doors and luggage compartment
seals, and wax the paint surface
where the doors and luggage
compartment seals contact;
12. Cover the body with
breathable covering made of
cotton or similar "porous
materials". Plastic sheeting and
similar non-porous materials will
accumulate moisture and damage
the body surface paint;

13. If possible, periodically run the

engine a moment (preferably
once a month).

Wiper
Notice for wiper usage
The wiper strips are wearing parts
made of synthetic rubber, which will
be impaired by the environment and
drivers' habits; in order to ensure the
wiper life and driving safety, please
note the following matters.
※ Do not use the wipers to scrape the

ice on the windshield surface; use
dedicated ice scraper instead;

※ Do not wipe on dirty, oily or waxed

windshield surface;

※ Keep the glass surface clean, and

do not wipe the dust, sand, insects
and foreign matters on the glass
surface;

※ During car washing and body paint

maintenance,

it doesn’t need to

wax the windshield, because the
wax layer will reflect light in poor
lighting environment and affect the
sight and driving safety. After
washing, wash the wipers in
purified water, and use special
glass wax cleaning agent to clear

the wax on the windshield;

※ Do not wash the wipers with water

gun directly when washing the car,
to avoid damaging the wipers due
to high water pressure.

Maintenance rules

 Regularly clean the

windshields and wipers (once
every one or two weeks)

 Even if it does not rain, it is

also recommended that
regular scrape the wipers
(once every one or two days)

 When scrape the windshield

with wipers, it is required to
keep the windshield fully wet
(spray the washing liquid if it
doesn’t rain)

 Use dedicated windscreen

washer fluid to clean the
windshield

 Wipe clean with a rag in time

if the windshield is stained
with dirt or insect's body

 If the windshield has pits

BYD F7-1, F7-2, F7-3

Owner’s Manual

Self Maintenance 6-12

knocked by gravel, carry out
maintenance in time (use
windshield repair resin for pits,
and replace the windshield if
there are too many or too big
wounds)

 Regularly replace the wipers

(every six months)

※ When cleaning the windshield,

lift the wiper arm first, and
follow the specific operation
below:

A. First, turn off the car power;
B. As shown in the figure, grasp the

top of the wiper with the thumb
and other fingers and carefully
lift the wiper assembly

√ X