BYD F3DM. Service Manual - part 5

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F3DM Owner’s Manual

Chapter 1 

Section 1-4

—————————————————————————————

Operation of Instruments and Controls

Lights, Wipers, EV and HEV Switch

Headlights and Turn Signals ……………………………………… 66
High Mount Brake Light …………………………………………… 67
Emergency Flashers  ……………………………………………… 67
Front Fog Light( optional ) ………………………………………… 68
Rear Fog Light …………………………………………………… 68
Rear Interior Light ………………………………………………… 69
Ignition Key Warning Light ……………………………………… 69
Front Windshield Wipers and Washer …………………………… 70
EV and HEV Switch ……………………………………………… 71
Multi-function Switch ……………………………………………… 72

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Headlights and Turn Signals

To turn on the following lights: Twist the 
headlight/ turn signal lever knob.
Position 1 – width-indicator lights, 
license plate light and instrument 
illumination lamps, overall unit 
backlight, etc. 
Position 2 –headlights and all of the 
above.
Position 3 (“Auto”) – headlights and/or 
all of the above (same with position 2).
They automatically turn on or off 
depending on the darkness of the 

surroundings, When in position3, it can 
automatically turn on the light while 
driving into the dark areas.

NOTICE

To prevent the battery from being 
discharged, do not leave the lights 
on longer than necessary when the 
DM system is not running.

The automatic light control sensor is on 
the top of the driver’s side instrument 
panel.

D o   n o t   p l a c e   a n y t h i n g   o n   t h e 
instrument panel, and/or do not affix 
anything on the windshield to block this 
sensor.
Light Reminder Buzzer 
If you open driver-side door and 
remove the key when the width-
indicator lights are turned on, the 
buzzer will sound warning tone, 
reminding you to turn off the lights.

NOTICE

To prevent the battery from being 
discharged, do not leave the switch 
on longer than necessary when the 
DM system is not running,

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High / low beams – For high beams, 
turn the headlights on and push the 
level away from you (position 1). Pull 
the level toward you (position 2) for low 
beams.
The headlight beam indicator light 
(blue light) on the instrument panel will 
tell you that the high beams are on,
Flashing the high beam headlights 
(position 3) -- pull the lever all the way 
back. The high beam headlights turn 
off when you release the lever,
You can flash the high beam headlights 

even with the knob turned to “OFF”.

Turn Signals
To signal a right steering, push up your 
left handle to position1; to signal a left 
steering, push down your left handle to 
position1.
The DM system must be in the “IG-ON” 
mode.
The lever automatically returns after 
you make a turn, but you may have 
to return it by hand after you change 
lanes,
To signal a lane change, move the 

lever up or down to the pressure point 
(position 2) and hold it.
If the turn signal indicator lights (green 
lights) on the instrument panel flash 
faster than normal, a front or rear turn 
signal bulb is burned out.

High Mount Brake Light

When you step on brake pedal, the 
light comes on together with the rear 
brake light, warning that the car is in 
braking to prevent accidents. 

Emergency Flashers

To turn on emergency flashers, just 
push this switch as shown on the 

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picture above. 
All turn signal lights will flash. To turn 
them off, just push the switch once 
again.
Turn on the emergency flashers to 
warn other drivers if your vehicle must 
be stopped where it might be a traffic 
hazard. Always pull as far off the road 
as possible. 
The turn signal light switch will not 
work when the emergency flashers are 
operating. 

NOTICE

To prevent the battery from being 
discharged, do not leave the lights 
on longer than necessary when the 
DM system is not running. 

Front fog lights (optional)

To turn on the fog lights, first twist left 
switch to the position of sidelight or 
headlight, then twist the front fog light 
switch to “ON”.
Front fog indicator on the instrument 
panel indicates that the light comes on.

Rear Fog Light

To turn on rear fog lights, push this 
switch. Rear fog light will go on in the 
following cases: 
When front fog lights (optional) switch 
are turned on – when headlight or 
width-indicator lights are turned on, the 
rear fog lights will be turned on.
When front fog light (optional) switch 
is turned off – when the headlights are 
turned on, the rear fog lights will be 
turned on.
When there are no front fog lights – 
when headlights are turned on, press 

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the rear fog light switch, then the rear 
fog lights will be turned on. 
When rear fog lights are turned on, the 
rear fog light switch indicator on the 
instrument panel will go on. 
When headlights are turned off, even if 
you turn on the headlight switch again, 
the rear fog lights won’t be turned on. 
When all other lights are turned off, 
rear fog lights will go out automatically. 
To turn on the rear fog lights, press 
the switch again under the condition 
mentioned above.

Rear Interior Light

To turn on the interior light, slide the 

switch. 
The interior light switch has the 
following positions: 
“ON” – Keeps the light on all the time. 
“OFF” – Turns the light off. 
“DOOR“–Turns the light on when any 
door is opened. When all doors are 
closed, this light will go out.

Illuminated Entry System
With the switch in the “DOOR” position, 
the light comes on when any of the 
doors is opened. When all the doors 
are closed, the light will remain on for 
30 seconds.
However, in the following cases, the 
light goes off immediately:
● All the doors are closed when the 
DM system is in “IG-ON” mode. 
●Using  wireless  remote  control  to 
close and lock all doors. 
When all the doors are unlocked by 

wireless remote control, rear interior 
light and ignition key warning light will 
remain on for 30 seconds. 
You can enable or disable this function. 
Please refer to “Settings of Optional 
Functions” in Section 1-2. 

Ignition Key Warning Light 

To see ignition switch easily, the 
ignition key warning light goes on when 
any doors are open. 
●The light remains on for 30 seconds 
after all the doors are closed. 

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●When all doors are locked by using 
wireless remote control or after all 
doors are closed, turn the ignition 
switch to “ON”, then the light goes out. 
●When  all  doors  are  unlocked  by 
wireless remote control, the light will 
be on for about 30 seconds, even if the 
doors are not open. 
You can enable or disable this function. 
Please refer to “Settings of Optional 
Functions” in Section 1-2. 

Front Windshield Wipers and 

Washer

To turn on the windshield wipers, move 
the lever to the desired setting. 
The DM system must be in the “IG-ON” 
mode.  

Lever position 

Speed Setting

Position 1

Intermittent

Position 2

Slow

Position 3

Fast

For a single sweep of the windshield, 
push upward the lever from OFF very 
quickly and then release, it will sweep 
once and then back to its position. 
It will continue sweeping if you push 
it longer than 0.5s. It will stop if you 
completely release it. 
To squirt washer fluid, pull the lever 
backwards to yourself within0.5s, 
it will squirt fluid without wiping the 
window; if it function for a long time, 

it will continues squirt fluid with low 
speed wiping the window and when 
the windshield wipers are off, they will 
operate a couple of times after the 
washer squirts.  
For instructions on adding washer fluid, 
see “Adding washer fluid” on Section 
7-3. 
I n   f r e e z i n g   w e a t h e r,   w a r m   t h e 
windshield with the defroster before 
using the washer. This will help prevent 
the washer fluid from freezing on your 
windshield, which can block your 
vision. 

NOTICE 

Do not operate the wipers if the 
windshield is dry. It may scratch the 
glass. 

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F3DM Owner’s Manual

EV and HEV Switch

EV Switch     HEV Switch

EV and HEV switches are designed 
to shift between EV mode and HEV 
mode. Indicator on the switch indicates 
that the vehicle runs under the 
corresponding mode. 

EV Mode
In general conditions, push EV switch, 
then its indicator goes on and the 
vehicle runs under EV mode. 

WARNING 

 

y

You are expected to make a 

proper choice according to 
the battery power, when the 
vehicle cannot shift to EV mode 
automatically. 

 

y

DM system can judge whether 

shift  to  HEV  mode  according 
to the actual situations and 
battery power while driving.  DM  
system may shift to HEV mode 
automatically in case of rapid

acceleration or insufficient power.

 

y

Be careful for the conditions 

around your vehicle when driving 
under pure EV mode, pedestrians 
may not aware your vehicle 
because of no noise of engine.  

HEV Mode
Push HEV switch, then its indicator 
goes on and the vehicle runs under 
HEV mode. 

!

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WARNING

As  EV  and  HEV  have  memory 
effect, the car will run in the mode 
used last time after starting. 
If the power is very high, engine 
may not be able to start under HEV 
mode. 

Multi-function Switch 

ODO/SET:
Every time you press ODO/SET button, 
the instrument will shift from odometer 
to trip odometer TRIP A, trip odometer 
TRIP A to trip odometer TRIP B, and 
trip odometer TRIP B to odometer. 
When readings of trip odometer TRIP 
A or TRIP B are displayed, long press 
ODO/SET button for over 2 seconds, 
readings of trip odometer will be 
cleared.  

Backlight on the instrument panel
The backlight will circularly adjust five-
range brightness when push the multi-
function switch. (the light on instrument 
panel will go off when the width-
indicator light comes on)  

!

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F3DM Owner’s Manual

Chapter 1 

Section 1-5

—————————————————————————————

Operations of Instruments and Controls

Instruments and Maintenance Indicators

Tachometer ………………………………………………………… 74
Fuel Gauge ………………………………………………………… 74
Engine Coolant Temperature Meter  …………………………… 74
Wattmeter ………………………………………………………… 75
Battery Coulomb Meter …………………………………………… 75
Electric motor Coolant Temperature Meter  …………………… 76
Odometer and Trip Meter ………………………………………… 76
Service Reminder Indicators & Warning Buzzers ……………… 77

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The left information display screen 
displays tachometer, fuel gauge, 
engine coolant temperature meter , 
electric motor coolant temperature 
meter, odometer, wattmeter, etc.
The right information display screen 
displays coulomb meter, energy 
conversion prompt, gears and power 
mode.

Tachometer 

Tachometer displays the engine speed 
by 1000times rpm (round per minute). 
In  pure  EV  mode,  it  is  normal  that 

the tachometer does not indicate the 
rotating speed while in HEV mode the 
tachometer shall work and indicate the 
rotating speed of engine. 

Fuel Gauge 

When power supply is ON, this fuel 
gauge indicates the approximate 
quantity of fuel remaining in tank.
Nearly full – Indicator at “F”. 
Nearly empty – Indicator at “E”. 
Generally the tank shall be kept more 
than 1/4 full. 

When braking, accelerating or turning 
a corner, the meter may swing because 
of the fuel sloshing in the fuel tank. 
If the fuel level approaches “E” or the 
low fuel level indicator light turn on, fill 
the fuel tank as soon as possible. 
When driving on a slope or turning a 
corner, fuel in the tank may slosh, the 
fuel indicator may fluctuate or low fuel 
level warning light may often comes on 
earlier. 

Engine Coolant Temperature 

Meter 

When power supply is ON, this

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Meter indicates the engine coolant 
temperature when the engine is 
working. The engine temperature 
varies with climate and engine load 
capacity. 
The light comes on, warning that the 
engine coolant temperature is too high. 
so please stop the car immediately to 
cool down the engine. 
The engine may get overheated in the 
following cases: 
● Driving up a long hill on a hot day. ;
● When the car is used to tow a trailer.

CAUTION

 

y

Do not remove the thermostat 

in the engine cooling system, 
otherwise the engine may run 
abnormally. 

 

y

When  the  warning  light  is  on, 

please stop the car to cool down

 the engine or the electric motor, 
otherwise, the engine would be 
damaged. If the light flashes 
repeatedly, please contact BYD 
authorized dealer for help.

Wattmeter 

When the power supply is “ON”, this 
meter indicates the power of the overall 
unit. 
When the wattmeter indicates negative 
value, overall unit is in power feedback 

rather than having any abnormalities. 

Battery Coulomb Meter 

When ignition switch is turned on, this 
meter indicates the power of battery. 
If the meter points at red area, it 
indicates the battery power is too low. 
In this case, please go to charging 
station to charge the battery as soon 
as possible. 

!

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Electric motor Coolant 

Temperature Meter 

When  power  supply  is  ON,  this 
meter indicates the electric motor 
coolant temperature when electric 
motor is working. The electric motor 
temperature varies with climate and 
load capacity. 

Odometer and Trip Odometer

By pressing ODO/SET button on the 
central control panel, indications of 
odometer and trip odometer will be 
displayed alternately. 

Information is displayed as follows: 

1. ODO – shows the total distance the 
vehicle has been driven.
2. TRIP A/TRIP B – shows the distance 

driven since the trip meter was set to 
zero at the last time.  
3. TRIP  FUEL  –  shows  the  driving 
mileage with the engine involved.
4. TRIP SOC – shows the driving 
mileage without the engine involved.
To reset the Trip Meter to zero, please 
press  ODO/SET  button  for  over  2 
seconds when display the Trip Meter 
reading.  
Instruments Backlight Adjustment 
By pressing backlight adjusting button 
on the central control panel, you 
can adjust the backlight brightness 
circularly. 
Power Conversion Indicator 
The right information display screen 
indicates the corresponding conversion 
of fuel, power and the driving energy of 
the overall unit, according to the actual 
status of usage. 

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Service Reminder Indicators & Warning Buzzers

If the indicator or

buzzer comes on 

You shall do

(a)

Parking Brake System Indicator  
Possible cases: low braking fluid level, braking system failure, or parking brake is not released. 
You shall release parking brake or stop immediately and contact BYD authorized .dealer. 

(b)

Driver’s Seat Belt Reminder Indicator 
Fasten driver’s seat belt.

(c)

Auxiliary Battery Charging System Indicator
Stop immediately and contact BYD authorized dealer.. 

(d)

Low Oil Pressure Indicator
Stop immediately and contact BYD authorized dealer.. 

(e)

Malfunction Indicator Lamp
Stop immediately and contact BYD authorized dealer.. 

(f)

Low Fuel level Indicator
Fill up the tank. 

(g)

Anti-lock Brake System(ABS) Indicator 
Stop immediately and contact BYD authorized dealer.. 

(h)

Open Door Indicator
Check and make sure all doors are closed properly. 

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(i)

SRS Indicator
Take vehicle to BYD authorized dealer immediately. 

(j)

High coolant temperature Indicator 
Stop immediately and cool down the engine or electric motor. 

(k)

Hybrid System Warning Light
Stop immediately and contact BYD authorized dealer.. 

(l)

Electric Power Steering System Warning Indicator
Stop immediately and contact BYD authorized dealer..  

(m)

Low Power Indicator
Charge the power battery.  

(n)

Power Battery Failure Indicator
Stop immediately and contact BYD authorized dealer..  

(0)

Electric Motor Failure Indicator
Stop immediately and contact BYD authorized dealer.. 

(p)

DC-DC Fault Indicator
This light comes on when there is a fault in DC-DC system. Please stop your 
car immediately and contact BYD dealer.

(q)

Key reminder buzzer 

Remove the key. 

(e)

Light reminder buzzer 

Turn off the light. 

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(a) Brake System Warning Indicator 
These indicators come on in the 
following  cases  when  the  “  IG-ON” 
mode is enabled. 
When the brake fluid level is low. 
When parking the car and the parking 
brake is applied. 
When ABS system failure. 

CAUTION

It is dangerous to continue driving 
when the brake fluid level is low and 
brake system is at fault.

Have  your  vehicle  checked  at  BYD 
authorized dealer in the following 
cases:
The indicators do not come on even if 
the parking brake is applied when the 
“IG-ON” mode is enabled. 
The indicator are always on even after 

the parking brake is released  when 
the “IG-ON” mode is enabled. 
The parking brake system indicator 
remains on together with the “ABS” 
indicator. 

(b) Seat Belt Reminder Indicator 
This indicator reminds you to buckle up 
the driver’s seat belt. 
Once the “IG-ON” mode is enabled, 
the reminder indicator flashes if the 
driver’s seat belt is not fastened. 
Unless the driver fastens the belt, the 
indicator keeps on flashing. 

(c) Auxiliary Battery Charging System 
Indicator
This indicator warns that there is a 
problem somewhere in the auxiliary 
battery charging system. 
If it comes on while you are driving,  
please contact BYD authorized dealer.

(d) Low Oil Pressure Indicator
This indicator warns that engine oil 
pressure is too low. 
If it keeps on while you are driving, 
stop immediately and contact BYD 
authorized dealer.. 
When  the  engine  is  started,  this 
indicator  might flash occasionally 
or  come on of short duration after 
emergency braking. It is normal that 
this indicator  goes out when speeding 
up gradually. 
The indicator comes on when the oil 
level is extremely low. The indicatior is 
not designed to indicate the oil level, 
which must be checked by the dipstick.

!

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NOTICE

Do not drive the vehicle with the 
indicator on—even for one block. It 
may ruin the engine. 

(e) Malfunction Indicator Lamp
This lamp comes on when there is a 
fault in engine EFI system. 
When this lamp is on, please contact 
BYD authorized dealer for help. 

(f) Low Fuel Level Indicator
This indicator  flashes when the fuel  
tank becomes nearly empty.. refuel as 
soon as possible. 
When  driving  on  a  slope  or  turning 
a corner,  shaky fuel in the tank may 
cause the indicator be turned on 
earlier. 

(g) Anti-lock  Brake  System  (ABS) 
Indicator 
The indicator comes on when the 
“IG-ON” mode is enabled. If the anti-
lock brake system works properly, 
the indicator turns off in few seconds. 
Thereafter if the system malfunctions, 
the indicator comes on again. 
When the “ABS” indicator is on (the 
braking system indicator is off), the 
anti-lock brake system does not 
operate but the brake assist system 
still operates. In this case, the wheels 
could lock up during a sudden braking 
or braking on slippery road surfaces. 
If either of the following conditions 
occurs, this indicates a malfunction 
somewhere in the parts monitored by 
the warning light system, and please 
contact BYD authorized dealer as soon 
as possible. 
The indicator does not come on or 

keeps on when the “IG-ON” mode is 
enabled. 
The indicator comes on while you are 
driving. 

CAUTION

If the ABS indicator remains on 
together with the parking brake 
system indicator, immediately stop 
your and contact BYD authorized 
dealer.
In this case, not only the anti-lock 
brake system will fail but also the 
vehicle will become extremely 
unstable during braking. 

(h) Open Door Indicator
This indicator remains on until all the 
doors are completely closed. 

!

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