BYD F6. Service Instruction — part 10

BYD AUTO F6 OWNER’S MANUAL

145

19．Store the center cover in the trunk, make
sure it does not get scratched or damaged.

20．Lower the trunk floor, and then close the
trunk lid.

If engine can’t start

Diagnosing why the engine won‘t start falls
into two areas depending on what you hear
when you turn the ignition switch to the
START (Ⅲ) position:
1. You hear nothing, or almost nothing. This
means that the engine‘s starter motor does
not operate at all, or operate very slowly.

2. You can hear the starter motor operating
normally or the starter motor sounds like it
is spinning faster than normal, but the
engine does not start up and run.

Can’t start engine or starter
running slowly

When you turn the ignition switch to the
START (Ⅲ) position, you don‘t hear the
normal sound of the engine trying to start.
You may hear a clicking sound or series of
clicks, or nothing at all.
Check these things:

On the vehicle installing AT
Make sure the position of shift lever, the
shift lever must be in Park or Neutral.

On the vehicle installing MT
1. The clutch pedal must be pushed all the
way to the floor, or the starter will not
operate, and it may damage the starter.

2. Turn the ignition switch to the ON (Ⅱ)
position. Turn on the headlights, and check
their brightness. If the headlights are very
dim or do not come on at all, the battery is
discharged. At this time, see Jump Starting
on 148

th

page.

3. Turn the ignition switch to the START
(Ⅲ) position. If the headlights do not dim,
check the condition of the fuses. If the fuses
are OK, there is probably something wrong
with the electrical circuit for the ignition
switch or starter motor. You will need a
qualified technician to determine the
problem (Emergency Towing on 159

th

page).

If the headlights dim noticeably or got out
when you try to start the engine, either the
battery is discharged or the connections are

corroded. Check the condition of the battery
connections (refer to 118

th

page). You can

then try jump starting the vehicle from a
booster battery (refer to 148

th

page).

Starter running normally

In this case, the starter motor‘s speed sound
normal or even faster than normal, when
you turn the ignition switch to the START
(Ⅲ) position, but the engine does not run.
1. Are you using the proper starting
procedure? Refer to the starting the engine
on 86

th

page

.

2. Do you have fuel? Turn the ignition
switch to ON (Ⅱ) position, stop for one
minute, then check the fuel gauge. The
lower fuel indicator may not be working, so
it does not remind you to add fuel.
3, There may be an electrical problem, such
as no power to the fuel pump. Check all the
fuses (refer to

158

th

page).

If you find nothing wrong, you will need a
qualified mechanic to find out the problem.
See Emergency Towing on 162

nd

page.

BYD AUTO F6 OWNER’S MANUAL

146

Pushing car to start engine

(for model with instruction transmission)

If the vehicle‘s battery is discharged, maybe
you can use a booster battery to start the
engine. Although this seems like a simple
procedure,

you

would

take

several

precautions.

Friendly tips

A battery can explode if you do not
follow the correct procedure, seriously
injuring anyone nearby.

Make sure to keep all sparks, open
flames and smoking materials away
from the battery.

If the battery is out of connecting or
discharging, the setting of clock and
presupposition frequency on the sound
system will be cancelled. You need to reset
the clock and presupposition frequency
according to the explanation on sound
system section.

You can not start BYD AT vehicle by
pushing or pulling it

.

If you want to push car to start engine, you
must observe the explanation strictly as
following:
1.Open the hood, and check the physical
condition of the battery. (Refer to 116

th

page). In the very cold weather, check the
condition of the electrolyte, if it seems
slushy or frozen; do not to push starting
until it thaws.

Friendly tips

If the battery sits in extreme cold, the
electrolyte inside can freeze. Attempt to
push starting with a frozen battery can
cause it to rupture.

2. Turn off all the electrical accessories
(A/C, sound system, lights, ect.). Put the
transmission in Neutral or Park, and set the
parking brake.

3. Connect on jumper cable to the positive
(+) terminal on your battery of BYD,
connect the other end to the positive (+)
terminal on the booster battery.

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147

4．Connect the second jumper cable to the
negative (-) terminal on the booster battery,
connect the other end to the grounding strap
as shown. Do not connect this jumper cable
to any other part of the engine.

5．If the booster battery is in another vehicle,
have an assistant start the vehicle and run it
at a fast idle.

6．Start the vehicle. If the starter motor still
operates slowly, check the cnnnecting
condition of the jumper cables and make
sure that they have good metal-to-metal
contact.

7．Once your vehicle is running, disconnect
the negative cable from your vehicle, then
from the booster battery. Disconnect the
positive cable from your vehicle, then from
the booster battery.

Keep the ends of the jumper cables away
from each other. At the same time, keep the
ends of the jumper cables away from any
metal on the vehicle until everything is
disconnected. Otherwise, you may cause an
electrical short.

Engine overheating

In the most condition, the pointer of the
vehicle‘s temperature gauge should stay in
the midrange. If you drive up a long steep
hill in the hot day, the pointer may rise to
the red mark, and then you should
determine the reason of overheating.

Notice:
Driving with the temperature gauge pointer
at the red mark can cause serious damage to
the engine.

Several kinds of reasons can cause the
vehicle overheating, as short of coolant or

mechanical failure. The only indication may
be the coolant temperature gauge rising to
or above the red mark. Or you may see
steam or spray coming from under the hood.
No matter what kind of condition appears,
you must take measures at once.

Friendly tips

Steam and spray from an overheated
engine can seriously scald you.
Do not open the hood if steam is
coming out.

1．Safely pull to the side of the road. Put the
transmission in Neutral or Park, and set the
parking brake. Turn off the A/C and all the
other accessories, and turn on the hazard
warning lights.

2．If you see steam and/or spray coming
from under the hood, turn off the engine.

3．If you don‘t see steam or spray, leave the
engine running, and watch the coolant
temperature gauge. If the high heat is due to
overloading (for example, drive up a long

BYD AUTO F6 OWNER’S MANUAL

148

steep hill with the A/C opening in the hot
day), the engine should start to cool down
almost immediately. At this time, wait until
the coolant temperature gauge comes down
to the midpoint, and then continue driving.

4．If the coolant temperature gauge stays at
the red mark, turn off the engine.

5．Open the hood until you do not see any
steam or spray coming out.

6．Look for any obvious coolant leaks, such
as a split radiator hose. Every part is still
extremely hot, so use caution. If you find a
leak, it must be repaired before you
continue driving (refer to Emergency
Towing on 200

th

page).

7．If you don‘t find an obvious leak, check
the coolant level in the radiator reserve tank
(refer to 105

th

page). If the level is below

the MIN mark, add coolant, and let the level
rise between MIN and MAX marks.

8．If there was no coolant in the reserve tank,
you may need to add coolant to the radiator.
Let the engine cool down until the pointer

reaches the middle of the temperature gauge,
or lower, before checking the radiator.

Friendly tips

Removing the radiator cap while the
engine is hot can cause the coolant to
spray out, seriously scalding you.
Always make sure to let the engine and
radiator cool down before removing the
radiator cap.

9．Using gloves or a large heavy cloth, turn
the radiator cap counterclockwise, without
pushing down, to the first stop. After the
pressure releases, push down on the cap,
and turn it until it comes off.

10．Start the engine and set the temperature
control dial to maximum (set the A/C on
AUTO, ―Hi‖). Add coolant to the radiator
up to the base of the filler neck. If you do
not have the proper coolant mixture
available, you can add plain water.
Remember to have refilled with the proper
mixture as soon as you can.

11．Put the radiator cap back and tightening
it. Run the engine, and watch the
temperature gauge, if the pointer rises to the
red mark, the engine needs repair (see
Emergency Towing on 162

nd

page).

12．If the temperature stays normal, check
the coolant level in the radiator reserve tank.
If it has gone down, add coolant to the
MAX mark. Then put the cap back and
tightening it.

Engine oil pressure indicator

BYD AUTO F6 OWNER’S MANUAL

149

The indicator is on when turning ignitions
witch to ON (Ⅱ). The indicator is off after
starting engine. And indicator is off within
engine working. If it twinkles, show oil
pressure descends too fast instantaneously,
but get normal once more. If the indicator is
always on within engine working, show it
has hadn‘t oil pressure and engine may have
a serious hurt. Whatever above any symbol
happens, should take measures immediately.

Friendly tips
when engine work at low oil pressure,
that will cause a serious mechanical
hurt.
Park vehicle at safe place as soon as
possible, and close the engine.

1．Park vehicle at safe place, close the
engine and open the dangerous warning
indicator.

2．Stop vehicle for a minute. Open engine
hood and check up the level of oil (refer to
120th page). Though the oil pressure hasn‘t
direct relationship with its level, if the oil
has serious shortage, when turning or other
operations, the oil will lose pressure.

3．If necessary, add oil to make the level of
oil get to the highest scale of oil dip rod
(refer to 79th page).

4．Start engine and observe the low oil
pressure indicator. If it is off within 10
seconds, close engine. This shows that
engine has mechanical failure, you can
drive it after repairing (refer to 162nd page
about urgency draught).

Battery charging indicator

The indicator light should be on when
turning ignition switch to ON (Ⅱ) and
misfire after starting the engine.

If it is on when the engine working, it shows
that the charge system has stopped to charge
battery.

So you should immediately close all electric
accessories, such as radio, A/C, rear
window defrosting device, and cruise
control system etc. And don‘t use other
power control device as possible as you can.
Continue to keep the engine working, and
notice doesn‘t make it misfire. Starting
engine will make the battery discharged
sooner.
You can drive for several mileages before
the power is discharged by releasing the
electric load. Drive vehicle to the gas station
or repair shop to get the technique help.

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150

Engine malfunction indicator

The indicator is on for several seconds
when turning ignition switch to ON (Ⅱ).
That shows a control system of the engine
or transmission may have failure. You may
not feel unmoral, but the failure may lower
ability of saving fuel and cause more
emission. You may cause more serious hurt
when go on working at the state.

If the indicator is on, park your vehicle at
the road and close engine. Anew start
engine and check up the indicator. If the
indicator is still on, call BYD authorized
service station for checking up your vehicle.
Before the repairman come, carefully drive
to avoid the throttle valve full opening and

drive at a high speed. If the indicator is
frequently on, even if close it according to
the above step, it is necessary to call BYD
authorized service station for repairing.

Friendly tip

If go on driving vehicle when the
malfunction indicator is on. That will
hurt emission system and the engine. Its
repair isn‘t included in the maintenance.

Brake system indicator

The indicator will be on when turning
ignition switch to ON (Ⅱ). It reminds you
to check up the parking handle. If you don‘t
fully put it down, the indicator will be
always on.

Whenever the indicator is on, it shows that
brake system has failure. The problem is
mainly that the level of brake liquid is too
low.

Step the brake pedal lightly to test whether
it is normal. If normal, you should check up
the level of brake liquid (refer to 112nd
page) in the next fuel station. If there is a
low level, you should drive to BYD
authorized service station to check up
whether the brake system has symbol of
brake system leakage and the wearing
extent of brake disc.
But, if the brake pedal is unmoral, you
should take measures immediately, because
the design of brake system is dual loop.
Even if a part of system has failure, other
both wheels are still broken. The time you
must step pedal deeply, the vehicle can
decelerate and the brake distance also is
longer.

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151

Shift to low gear to decelerate, and park
your vehicle at the road. Because of the
long brake distance, drive is dangerous.
Trail the vehicle and repair it as soon as
possible. (Refer to 162nd page about
urgent draught).
If you have to drive for a short distance at
the state, be sure to carefully drive at a low
speed.

If the ABS indicator and it is on together,
should immediately send your vehicle to
BYD authorized service station to repair.

Close power sun roof

If you can‘t close the sun roof by power
motor, please take the following operation：
1．Check up the fuse of power motor (refer
to 187th page), if the fuse is burned, replace
the fuse whose aph value is the same or low.
2．Try to close sun roof, if the new fuse is
burned immediately or the motor doesn‘t
work, you can close sun roof with your
hands.

3．Take out the sun roof wrench from the

combination tool in the trunk.

4 ． Disassemble the round embolism by
screwdriver or coin.

5．Insert the wrench into sleeve of embolism,
rotate wrench until the sun roof is fully
closed.
6．Pull out wrench, fix the round embolism
anew.
If you need close the sun roof by hands, it
shows that the closing and opening function
of sun roof has failure. Call BYD authorized
service station to repair.

Fuses
All circuitry has itself fuse on your vehicle
to avoid short circuitry or overtaking load.
The fuses are fixed in both fuse boxes.

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152

The interior fuse box is under the driver side.
To disassemble it, pull and take out it from
hinge.

Fuse box under engine hood lies in left
rearside of engine chamber. To open it,
press button as the picture shows.

Check and replace fuses

If an electric device doesn‘t work, firstly
find out burned fuse. According to diagram
from 158th page to 159th page or the
position picture on the fuse box cover, make
sure which a fuse or several fuse control the
device. Firstly check up above fuses, but
before making sure burned fuse isn‘t the

reason for malfunction, should check up all
fuses. Replace all burned fuses and check
up the work state of all electric devices.
1．Turn ignition switch to LOCK (0), make
sure the headlight as well as other accessory
have been closed.

2．Open the fuse box.

3．Measure both ends of fuse with the lead
gear of multimeter. Make sure whether it is
burned; check up every thick fuse in the
fuse box under engine hood.
To disassemble these fuses, you must use
the cross screwdriver.

4．Use the fuse extractor attached in the fuse
box under engine hood, pull out the thinner
fuse in the fuse box under engine hood and
all fuses in the interior fuse box. Check up
them one by one.

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153

5．Find out the burned fuses, if burned, you
should replace them with spare fuse which
has a same amp value or lower.

When you can‘t drive vehicle for still

having malfunction and hasn‘t the spare
fuse to replace, pull out the fuse, it has a
same aph value or lower from other circuitry,
instead of it. But firstly you must make sure
the circuitry (cigar lighter or radio) has no
influence on drive.

The replaced spare fuse may be burned once
more.
Though it doesn‘t show that there is
malfunction, also you should use the fuse
which has right rating value to replace as
soon as possible.

Notice
Replacing the burned fuse with the fuse
which has a higher amp value will
increase the possibility of electric
system hurting. If there isn‘t the fuse

which matches with the circuitry, you
should use the fuse whose amp value is
low.

6．If the substitute fuses which has the same
rating is burned in a short time, which
shows the vehicle has a serious malfunction
in the electric system. Call the qualified
technician for checking up your vehicle.

If the fuse of radio system is taken out, the
setting of clock and frequency will be
cancelled. Anew set them according to the
chapter of radio system.

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154

Use box under engineer hood

Label of fuse box

The position of fuse is marked on the fuse label by the number. Refer
to the page about the fuse on your vehicle.

BYD AUTO F6 OWNER’S MANUAL

155

Number

AMP

Device or circuitry protected

1

10A

R headlight ( high beam)

2

10A

L headlight ( high beam)

3

10A

L headlight ( low beam)

4

10A

R headlight ( low beam)

5

30A

Power wiper system

6

15A

Ash

box

light,

Radio-HVAC-Display
module light,

Automatic

transmission case control
light,

Front

sign

light,

Glove box light, Dangerous
warning switch light, Foot
part light, License plate
light, Sun roof switch light,
Relay

control

module,

Seat heater switch light,
Trailing light

7

7.5A

Relay control module

8

20A

Front fog light

9

15A

ECM power, A/T control
relay power

10

30A

Condenser fan motor (low
speed), radiator fan motor
( low and high speed)

11

20A

Condenser fan motor ( high
speed)

12

7.5A

A ／ C compressor clutch
( through relay of A ／ C
compressor clutch)

13

15A

Turning signal ／ dangerous
warning relay.

Number

Amp

Device or circuitry protected

14

20A

Brake light, High brake light,
ignition switch key light,
(MICU)
Speaker, Warning device relay
( through relay module)

15

40A

Rear

window

defogging

( through its relay)

16

40A

Cigar lighter, Spare power
on-board, Doorlock motor,
Rear fog light, interior light,
radio system, all CAN module
power

17

25A

ABS modulator 一 control
device

18

40A

Electric injection system

19

40A

ABS modulator 一 control
device (RFP MOTOR)

20

40A

Power seat adjusting system,
seat heating
system

21

40A

Blower

motor

(

through

blower motor relay)

22＿1

100A

Battery, distribution

22＿2

70A

Spare

23＿1

50A

Power window system

23＿2

50A

Ignition switch (BAT)

BYD AUTO F6 OWNER’S MANUAL

156

Interior fuse box

Label of fuse box

The position of fuse is marked on the fuse label by the number. Refer
to the page about the fuse on your vehicle.

BYD AUTO F6 OWNER’S MANUAL

157

Number

Amp

Device or circuitry protected

1

20A

Door lock, trunk lock motor
power

2

7.5A

Door light, environment light,
roof light, map light, trunk
light, dresser light

3

10A

Instrument control module,
combination switch control
device, door multi roads
control, (MICU)

4

10A

Radio system power

5

15A

Cigar lighter, spare power

6

7.5A

Rear fog light

7

20A

Seat heater and heater switch
indicator

8

20A

Driver

power

seat

angle

adjusting motor and rear up
and down adjusting motor (8
direction)

9

20A

Front passenger F/R sliding
motor

10

20A

Driver power seat F/R sliding
motor and front up and dower
adjusting motor (8 direction)

11

20A

Front passenger power seat
angle adjusting motor

12

….

Spare

13

….

Spare

14

10A

Seat heater relay loop power,
power
Rear view mirror, A/C
control power

15

20A

Sun roof motor and ON/OFF
relay

16

20A

Regulator motor of driver side

17

20A

Regulator motor of front
passenger

Number

AMP

Device or circuitry protected

18

20A

Regulator motor of L-R door

19

20A

Regulator motor of R-R door

20

7.5A

Cigar lighter, spare power
relay, radio device, interior
rear view mirror direction
display

21

…..

Spare

22

…..

Spare

23

30A

Engine

ECU,

injector,

camshaft

position

sensor,

vacuum solenoid, oxygen
sensor, carbon jar control
valve

24

15A

Diagnostic tester power, fuel
pump motor

25

15A

ETV relay

26

15A

Engine ECU

27

…..

Spare

28

15A

4G69S4M ECU 2nd gear
power, ABS control 2nd gear
power, relay control module

29

….

Spare

30

7.5A

Rain amount sensor, wiper

relay

31

7.5A

Combination

instrument,

combination switch, door
multi-road control, relay
control module, back radar
ECU, multi-road control
device IG1 power

32

10A

Air bag control module

33

….

spare

Emergent Traction

If your vehicle needs to be towed, call a
professional

towing

service

or

an

organization. Never tow your vehicle with
just a rope or chain. It is very dangerous.

There are three ways to tow your vehicle.

1．Flat-bed Equipment — The operator
loads your vehicle on the back of a truck.
This is the best way to transport your BYD
vehicle.

2 ． Wheel-lift Equipment — The tow
truckuses two pivoting arms that go under
the tires (front or rear) and lift them off the
ground. The other two tires remain on the
ground. This is an acceptable way to tow
your BYD vehicle.

BYD AUTO F6 OWNER’S MANUAL

158

Notice

If your BYD vehicle can not use
Flat-bed Equipment to transport, you
should use Wheel-lift Equipment to
transport. If, due to damage, your
vehicle must be towed with the front
wheels on the ground, do the following:

Instruction transmission:
1 Release the parking brake.
2 put the transmission in Neutral.
3 Leave the ignition switch in the
ACCESSORY (Ⅰ) position, so the
steering wheel does not lock.

Automatic transmission:
1 Release the parking brake.
2 Start the engine.
3 Shift to Drive, then to Neutral.
4 turn off the engine.
5 Leave the ignition switch in the
ACCESSORY (Ⅰ) position, so the
steering wheel does not lock.

CVT transmission:

The model with VT2-04O transmission
cannot haul, because only when the engine
runs, can the cone pulley produce oil
pressure, and then the drive belt can run.
Thus, the front wheel must be raised to
begin hauling (hanging hauling)

3．If you can not find trailer company while
occurring emergency faults, you can use
towing hook to tow the vehicle. There is a
decoration cover on the humper under the
right front headlight. Remove the cover, and
take out the towing hook from vehicle tools
and screw into the towing hook bracket and
tightening it, use the special trailer cable.
You must be careful while towing the
vehicle.

For CVT vehicle, the gear must be

put on ―N‖ and the engine must run in case
of emergent traction. Only if the engine runs,
can the oil pump of the transmission
provide oil pressure and the drive belt can
run, or it will damage the drive belt.

The driver must sit in the towed vehicle;
operate the vehicle and the brakes

Notice

We do not recommend to use towing
hook to tow the vehicle with four-wheel
on the ground, it is best to call a
professional towing service or an
organization.
You can only use the towing hook on
the vehicle, or you will damage your
vehicle. Do not tow the vehicle from
the backside of vehicle with four-wheel
on the ground, or it can damage your
vehicle.

Towing hook bracket

BYD AUTO F6 OWNER’S MANUAL

159

Notice

Improter

towing

preparation

will

damage thetransmission. So follow the
above procedure exactly. If you can not
shift the transmission or start the engine
(AT), your vehicle must be transported
with the front wheels off the ground.

With the front wheels on the ground, it is
best to tow the vehicle no farther than 80
km, and keep the speed below 55 km/h.
If you decide to tow with four-wheel on the
ground, you must use special trailer cable
with reasonable design and towing hook on
the vehicle. Follow the above procedure,
and does the preparation work for the
vehicle. Leave the ignition switch in the
ACCESSORY (Ⅰ) position, so the steering
wheel does not lock. Make sure that
radiogram and all electrical accessories both
turn off, to avoid discharging the battery.

Notice

The steering system can be damaged if
the steering wheel is locked. Leave the
ignition switch in the ACCESSORY
(Ⅰ) position, and make sure the
steering wheel turns freely before you
begin towing.

Notice

Trying to lift or tow your vehicle by the
hampers will cause serious damage.
The hampers are not designed to
support the vehicle‘s weight.

BYD AUTO F6 OWNER’S MANUAL

160

Technical data

Diagram of the chapter shows the
dimension and capacity as well as the
position of identification no.

Identification No. . . . . . . . 160
Specification . . . . . . . . 162