BYD M6. Service Manual — part 13
BYD M6 AUTO Owner’s Manual
Engine
cylinder wall is burned during the
When judging the amount of oil
high temperature combustion
consumption, note that the oil may
Engine Oil Consumption
process.
become diluted and make it difficult to
Engine oil function
y Engine oil is also used to lubricate
judge the true level accurately.
the intake valve stems. Some of
The primary function of the engine oil
For example, if a vehicle is used for
this oil is sucked into the
is to lubricate and cool moving parts
repeated short trips, and consumes a
combustion chamber together with
of the engine, so as to keep the
normal amount of oil, the dipstick may
the intake air and is burned along
engine running normally.
not show any drop in oil level at all,
with the fuel. High temperature
even after 1000km or more.
Engine Oil Consumption
exhaust gases also burn the oil
used to lubricate the exhaust valve
This is because the oil is gradually
Oil consumption is expected in all
stems.
diluted by fuel or moisture, making it
engines. Under normal conditions, oil
appears that the oil level has not
The amount of engine oil consumed
consumption can be attributed to the
changed.
depends on the viscosity and quality
following reasons:
of the oil and the conditions under
The diluting ingredients will evaporate
y Engine oil is used to lubricate the
which you are driving.
in high speed driving, such as on an
cylinder, piston and position ring.
expressway. That is why sometimes
Oil consumption will be more during
When the piston moves downward
you will find out the oil is excessively
high speed driving and frequent
in the cylinder, a thin oil film will
consumed after driving at high speed.
acceleration and deceleration.
form on the cylinder wall. When
the vehicle is decelerating, high
A new engine consumes more oil, and
negative pressure generated in the
proper
running-in
process is
engine will suck some oil into the
necessary to seat the mating surface
combustion chamber. This oil as
of the pistons, piston rings and
well as part of the oil film left on the
cylinder walls.
Part Maintenance 7-6
BYD M6 AUTO Owner’s Manual
Importance of Engine Oil Level
Check Oil Level
Check
One of the most important points in
proper vehicle maintenance is to keep
the engine oil at the optimum level so
that oil function will not be impaired.
Therefore, it is essential that the oil
level be checked regularly. It is
recommended to check the oil level
every time you refuel the vehicle.
BYD483QB
engine
dipstick
(yellow
ring)
NOTICE
Mitsubishi 4G69S4M engine dipstick
(white ring)
y Check the engine oil level
regularly. If there is insufficient
oil in the engine, it will cause
severe damage.
For details on checking the oil level,
The upper and lower limits of the
There are 2 holes at the upper and
refer to the next section “Check Oil
BYD483QB engine dipstick are
lower limit of Mitsubishi
4G69S4M
Level”.
indicated with two lines: F (Full) and L
engine dipstick. The oil level must fall
(Low). The oil level must fall between
between the upper and lower holes.
the upper and lower lines.
Part Maintenance 7-7
BYD M6 AUTO Owner’s Manual
When the engine is at the normal
Add Oil
BYD483 engine oil filler cap
operating temperature, turn if off and
If the oil level is below or slightly
check the oil level with a dipstick.
above the L line, you must add oil of
1. To get accurate reading, make
the same specification to the engine.
sure the vehicle is on level ground.
Remove the oil filler cap to add oil.
Wait for a few minutes so that the
Don't overfill oil.
You can use a
oil has sufficient time to drain back
funnel when adding oil.
to the sump.
2. Pull out the dipstick and wipe it
For oil capacity of the vehicle, see
clean with a cloth.
“Maintenance Specifications”
in
Chapter 8.
3. Reinsert the dipstick completely to
get the most accurate reading.
After adding enough oil to get the oil
Mitsubishi 4G69S4M engine oil
4. Pull out the dipstick and check the
level in normal range, put back the
filler cap
oil level. Don't turn it upside down
filler cap and tighten it manually.
to look at it. The oil level must fall
between the F line and L lines.
NOTICE
y Prevent the oil from dripping on
any vehicle part.
Part Maintenance 7-8
BYD M6 AUTO Owner’s Manual
Recommended oil viscosity (SAE)
Oil Identification Marks
NOTICE
y Prevent the oil from dripping on
any vehicle part.
y Don’t add too much oil,
otherwise the engine may be
damaged. Check the oil level
again with the dipstick after
Temperature forecast range
adding oil.
before next oil change
Recommended Oil to Use
In extreme cold weather, you are
API Service Symbol
recommended to use SAE 5W-30 as
Engine oil is very important to
it provides the best performance. Oil
maintain the performance of the
of SAE 10W-30 or above makes the
engine and extend its service life.
engine hard to start.
Only use clean, high quality oil. For
optimum operation of the vehicle, we
recommend you to use BYD genuine
engine oil.
y API class: SG or above
y SAE viscosity class:
5W-30 (above -30°C)
ILSAC Certification Mark
10W-30/40
(year around in the
south and summer in the north,
above -15°C)
Part Maintenance 7-9
BYD M6 AUTO Owner’s Manual
API Certification Marks are added to
Check Engine Coolant Level
If the coolant level drops within a
some oil containers to help you select
short time after adding, there may be
the oil you should use.
a leak. Conduct a visual inspection of
the radiator, hoses, radiator cover,
The API Service Symbol is located
drain plug and pump.
anywhere on the outside of the
container.
If no leak is identified, contact a BYD
service station to measure the
The top portion of the label shows the
radiator cover pressure and check for
oil
quality by API
(American
cooling system leaks.
Petroleum Institute) designations,
such as SM. The centre portion of the
CAUTION
label shows the SAE viscosity class,
such
as
SAE
10W-30.
y
Don’t drive in deep water. Large
Energy-Conserving shown in the
amount of water entering the
Check
the
coolant
level
in
the
lower portion indicates that the oil has
engine compartment may cause
transparent coolant reservoir when
fuel saving capabilities.
damage to the engine and/or
the engine is cold. The coolant level
electric components. When the
The ILSAC
(International Lubricant
must fall between the FULL and LOW
engine is hot, don’t touch the
Standardization
and
Approval
line. (Refer to the next section “Which
radiator or condenser to avoid
Committee) Certification
Mark is
Coolant to Use” to choose a coolant.)
burning injury.
displayed on the front of the container.
The coolant level in the reservoir
Always use oil with API class SG or
varies with the engine temperature.
higher. The ingredients of such oil can
However, if the coolant level is at or
help save fuel.
below the LOW line, add coolant until
the coolant level reaches the FULL
line.
Part Maintenance 7-10
BYD M6 AUTO Owner’s Manual
Which Coolant to Use
Check Radiator & Condenser
Chassis
Using inappropriate coolant may
If the radiator or condenser is very
Check Power Steering Fluid
cause damage to the engine cooling
dirty, or if you have any problem on
system.
checking the radiator or condenser,
Upper level
please have the vehicle serviced by a
Only use the coolants authorized by
BYD service station.
Lower level
BYD. Select the right type of coolant
suitable to the ambient temperature of
NOTICE
your region.
y
Don't service the radiator or
CAUTION
condenser by yourself to prevent
damage to them.
2.0L model
y Don’t add plain water to your
engine, otherwise the cooling
system may get damaged.
Check the power steering fluid level at
Contact a BYD authorized service
least once a year. To check the fluid
station for details.
level, the vehicle must be on level
ground and the engine must be cold.
The fluid level must fall between the
UPPER LEVEL and LOWER LEVEL
marks on the reservoir. If the fluid
level is below the LOWER LEVEL,
add the specified power steering fluid
to the UPPER LEVEL.
Part Maintenance 7-11
BYD M6 AUTO Owner’s Manual
overflow. If overflow do occur,
Check Tire Pressure
Upper level
remove the excessive fluid
Keep the tires inflated to the proper
immediately. The parts in the
Lower level
pressure.
engine compartment may be
damaged if contaminated by the
See specifications in Chapter 8 “Tires”
power steering fluid.
for the recommended tire size and
y
If you have any problem on
pressure.
checking or adding the power
Check the tire pressure once a week
2.4L model
steering fluid, contact a BYD
or at least monthly. You must check
service station.
the pressure of the spare tire as well.
The fluid level may drop if there is a
leak in the system. In this case,
Improper tire pressure will cause
regularly check the fluid level and
NOTICE
increased fuel consumption, reduced
have the system inspected and
drive comfort, premature tire wear
y
Don’t turn the steering wheel to
repaired.
and decreased driving safety.
full left and full right and lock it
there; otherwise the power
If the tires lose air quickly, have your
NOTICE
steering
pump may be
vehicle checked by a BYD service
y Only
use
Mobil
ATF
damaged.
station.
DEXRON®-Ⅲ power steering
Follow the instructions below when
fluid or other ATF fluids that
checking the tire pressure:
meet DEXRON-Ⅲ standard.
Failure to use the proper fluid
y Check the tire pressure when the
can cause damage to the power
tires are cold. To get an accurate
steering system.
reading, you should check your
tires when your vehicle has not
y Add the fluid slowly to prevent
Part Maintenance 7-12
BYD M6 AUTO Owner’s Manual
been driven more than 1.5 km or
Tire Rotation
CAUTION
has been parked for at least
3
Keep your tires inflated to the
hours.
proper pressure. A severe accident
y
Use a tire pressure gauge.
may be caused if any of the
Empirical judgment of the tire
following occurs:
pressure without using a tire
Low tire pressure
(underinflated)
pressure
gauge may be
may cause:
significantly different with the
actual pressure. In addition, few
y
Excessive tire wear
pounds of pressure may cause
y
Abnormal tire wire
significant difference in ride
y
Reduced steering control
The purpose of regular rotation is to
comfort and drivability.
y
Air
leakage due to tire
achieve more uniform wear and
y
Don’t deflate the tires after driving.
overheating
longer service life for all tires. We
It is normal that the tire pressure
y
Reduced sealing performance
recommend you to rotate the tires
increases after driving.
along the tire edge
every 10,000 km. However, the most
y
Wheel deformation or separation
y
Make sure to install the tire valve
appropriate time to rotate the tires
of tire and wheel
caps. They can prevent air
must be determined by your driving
y
High tire pressure (overinflated)
leakage and keep dirt and
habits and road conditions.
may cause:
moisture out of the valve core. If a
The rotation pattern is shown in the
y
Reduced steering control
cap is missing, have a new one put
figure above.
on as soon as possible.
y
Excessive wear of the center
tread
Check for unusual wear or damage
y
Increased possibility that tires
before rotating the tires. Improper tire
may be damaged by bumps on
pressure or wheel alignment,
the road.
unbalanced wheels, and frequent
Part Maintenance 7-13
BYD M6 AUTO Owner’s Manual
braking will cause unusual tire wear.
Inspection and Replacement
possibility of tire skidding is.
of Tires
When storing a used radial ply tire,
If you can see cut, crack, cord fabric,
snow tire or rubber studded tire, mark
Tread wear indicator
bulge or any other damage in a tire, it
its direction of rotation so that you can
must be replaced.
reuse it with the same rotation
If the tire loses air quickly or has any
direction in the future. Tires must be
damage that cannot be repaired well
stored in a dry and cool place.
because of the size or location of the
damage, it must be replaced. If you
CAUTION
have any doubts, contact a BYD
y
The spare tire isn’t included in
authorized service station.
the rotation. It is intended only
If air leakage occurs in the tire while
for short trips.
Check Tires
driving, stop driving immediately.
Check the tread wear indicators on a
Even a short travel may cause
tire. If the tread wear indicators are
irreparable damage to the tire.
visible, the tire must be replaced.
A tire must be replaced after 6 years
Tread wear indicators are built into
due to aging even if there is no
each tire. If these indicators appear,
apparent damage.
replace the tire. These indicators
Tires deteriorate over time, even if
appear when your tires have only 1/16
they are not used or driven on.
inch
(1.6 mm) or less of tread
remaining. If the wear indicators
The six-year rule also applies to the
appear in two or more adjacent
spare tire and tires in storage.
grooves, the tire must be replaced.
The thinner tread, the greater the
Part Maintenance 7-14
BYD M6 AUTO Owner’s Manual
Replace Tires
trouble and even losing control
may lose balance during normal use.
of the vehicle.
Therefore,
check the wheels
When replacing a tire, only use a new
y Don’t mix tires of different
irregularly to ensure they are in good
tire with the same size, load range,
brands, size, construction and
balance.
speed rating and construction type.
tread patterns. Mixing tires may
When replacing a tubeless tire, the
Using a tire with other size or
cause steering trouble and even
tire valve must also be replaced.
structure will adversely affect the
losing control of the vehicle.
drivability, ride comfort, calibration of
speedometer/odometer,
ground
Never mount a used tire on your
clearance and the clearance between
vehicle.
the vehicle body and tire/snow chain.
Using a tire with unknown past use is
CAUTION
very dangerous.
You are recommended to replace all
Follow the instructions below.
four tires at the same time, or at least
Failure to abide by them may cause
you must replace the two tires on the
a server accident or even death.
same axle.
y It is dangerous to mix tires of
different
construction
(bias,
See “If You Have a Flat Tire” in
bias-belted or radial); otherwise
Chapter
6 for tire replacement
you could get into steering
procedure.
trouble and even lose control of
Keep the wheels in balance after
the vehicle.
replacing tires.
y Only use the tires of the
recommended size. Tires of
Unbalanced tire may adversely affect
other size may cause steering
the drivability and tire life. The tire
Part Maintenance 7-15
BYD M6 AUTO Owner’s Manual
Mounting Snow Chains
Mounting Snow chains
y
Avoid
sharp
turns
or
locked-wheel braking, which
When to Use Snow Chains
Mount the snow chains as firmly as
may adversely affect vehicle
Snow chains can be used when you
possible on the front wheels. Never
handling.
drive on snow or icy roads.
mount snow chains on rear wheels.
y
Slow down prior to making a
Retighten the snow chain after driving
On wet or dry surfaces, the normal
turn. Otherwise you may lose
for 0.5-1.0km.
tires provide larger traction than tires
control of the vehicle and cause
with snow chains.
Follow the manufacturer’s instruction
an accident.
when installing the snow chains.
Choosing Snow Chains
If you have installed wheel covers,
Choose a proper tire chain size.
NOTICE
remove them before mounting the
Refer to the applicable local laws on
snow chains. Snow chains will scratch
y
Don’t install tire chains to the
using snow chains on different roads
the wheel covers.
spare tire that is only intended
before you choose the snow chains.
for temporary use. Otherwise
CAUTION
the vehicle or tire may get
NOTICE
damaged.
y When driving with snow chains,
y Improper snow chains may
do not exceed 50 km/h or the
cause damage to the vehicle
speed limit recommended by the
body.
snow chain manufacturer,
whichever is lower
y Drive carefully and avoid bumps,
holes and sharp turns, which
may cause the vehicle to
bounce.
Part Maintenance 7-16
BYD M6 AUTO Owner’s Manual
Replace Wheels
chain clearance to the vehicle body
When to Replace a Wheel
and chassis.
y
When using snow chains, be
If you have wheel damage such as
careful not to damage the
CAUTION
bending, cracks or heavy corrosion,
aluminum wheels.
the wheel should be replaced.
Strictly follow the instructions below.
y
Only use BYD wheel nuts and
Otherwise an accident may occur
wrench designed for the aluminum
Failure to replace a damaged wheel
resulting in severe injury or even
wheels.
may cause the tire slipping off or loss
death.
y
To balance your wheels when
of vehicle control.
y Don’t use a wheel that is in
using snow chains, only use BYD
Choose a New Wheel
non-compliance
with
the
balance weights and a plastic or
When replacing a wheel, make sure
specifications recommended by
rubber hammer.
the new wheel has the same load
the manufacturer. This may
y
As with any wheel, regularly check
capacity, diameter, rim width and
adversely affect the vehicle
the aluminum wheels for damage.
offset with the damaged wheel.
handling and cause loss of
If damaged, replace it immediately.
Have the wheel alignment done at a
vehicle control.
Suspension and Chassis
BYD service station after replacing
Precautions on Aluminum Wheels
the wheel.
CAUTION
y After installing an aluminum wheel,
A wheel of a different size or type may
check whether the wheel nuts are
y Don’t modify the suspension or
adversely affect handling, wheel and
tightened properly after the first
chassis with gaskets, springs or
bearing
life,
brake
cooling,
1,600 km of driving.
other devices. This may
speedometer/odometer calibration,
adversely affect the vehicle
y After
rotation,
repair
or
braking
performance,
headlight
handling and cause loss of
replacement of tires, check
aiming, bumper height, vehicle
vehicle control.
whether the wheel nuts are
ground clearance, and tire or snow
tightened properly.
Part Maintenance 7-17
BYD M6 AUTO Owner’s Manual
Electric Appliances
y
Keep children away from the
mistake, drink large quantities of
battery.
water or milk and take raw eggs,
Checking Battery Conditions
plant oil or milk containing
magnesium
oxide.
Get
CAUTION
immediate medical attention.
Emergency Handling
Abide by the instructions below
y
If any electrolyte gets into your
when handling the battery since it
eyes, flush your eyes with clean
generates explosive and flammable
water for at least 15 minutes and
hydrogen.
get immediate medical attention.
y
Prevent the battery from
If possible, continue to apply
generating spark when using
water with a sponge or cloth to
tools.
the affected area while on the
y
Don't smoke or use anything
way to the hospital.
that produce an open flame or
y
If electrolyte gets on your skin,
spark near the battery.
thoroughly wash the contacted
y
The battery electrolyte contains
area. Get immediate medical
toxic and corrosive sulfuric acid.
attention if irritation persists.
y
Prevent the electrolyte from
y
If
electrolyte gets on your
contacting your eyes, skin or
clothing, it may penetrate to
clothing.
contact your skin. Take off the
y
Don’t drink the electrolyte by
contaminated clothing and
mistake.
handling the affected area as
described above in necessary.
y
Wear safety glasses when
operating around the battery.
y
If you drink the electrolyte by
Part Maintenance 7-18
BYD M6 AUTO Owner’s Manual
Appearance Inspection
extent that the battery can be
Checking Battery Electrolyte
firmly held in place. Overtightening
Checking by Indicators
may damage the battery case.
NOTICE
y
Before performing maintenance,
be sure to turn off the engine
OK
Charge Replace
and all electric accessories.
Battery Battery
y
When checking the battery, the
first step is to remove the
grounding cable from the
Status indicator
negative (-) terminal and the last
1. Terminals
step is to reinstall it in place.
2. Clamps
You can determine the battery
y
Be careful not to cause a short
Check whether the battery connection
conditions by the battery status
circuit with tools.
is corroded, loose or cracked, and
indicator. See the text on the battery
y
Don’t get any liquid into the
whether the clamp is loose.
case for the meaning of indicator
battery when washing it.
a. If the battery is corroded, wash it
statuses.
with a solution of warm water and
baking soda. Coat the outside of
CAUTION
the terminal with grease to prevent
y Replace the battery if the
further corrosion.
electrolyte is insufficient. Don’t
b. If a terminal is loose, tighten the
add electrolyte by yourself.
clamp nut - but do not overtighten.
c. Tighten the battery clamp to the
Part Maintenance 7-19
BYD M6 AUTO Owner’s Manual
Checking & Replacing Fuses
Left instrument panel distribution box
1 Engine compartment
2 Left instrument distribution box
1. Puller
2. Spare fuses
Part Maintenance 7-20
BYD M6 AUTO Owner’s Manual
If the headlights or other electric
wire is broken, the fuse should be
You are recommended to keep a
components do not work, check the
replaced. If you are not sure
complete set of fuses in the vehicle
fuses. The blown fuses must be
whether the fuse is blown, such as
for emergency use.
replaced.
in dim light, you can replace it with
If the new fuse with the same rating
another fuse with the same rating.
1. Turn off the ignition switch and
blows out quickly, fault may exist in
open the fuse box cover.
b. Never replace a fuse with anything
the electric system. Contact a BYD
but another fuse of the rating
service station to check the vehicle.
Find out which fuse is causing the
indicated on the fuse cover.
problem. The fuse box cover indicates
CAUTION
the name of the circuit for each fuse.
If a spare fuse is not available under
emergencies, you can remove the
y
Never use a fuse with high rating
2. Make sure the failed component is
fuse with the same rating for
or anything else as substitute for
turned off. Pull the suspected fuse
unnecessary components, such as
a blown fuse. It may cause
straight out with a puller and check
interior lights, and use it as the
severe wring damage
and
a
it. If the fuse has blown, install a
temporary replacement fuse.
possible fire.
new fuse in place.
If a replacement fuse with the same
rating is not available, you can use a
fuse which has a rating slightly lower
than the blown fuse. A replacement
fuse with a lower rating may blow out
quickly, but this doesn’t mean there is
a problem. Install a replacement fuse
Good
Blown
with the same rating as soon as
possible, and put back the temporary
a. Check the fuse carefully. If the fuse
replacement fuse in its original place.
Part Maintenance 7-21
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