2010 HONDA CIVIC HYBRID coolant temperature

This shows the temperature of the
engine’s coolant. During normal
operation, the reading should be in
the middle of the gauge. In severe
driving conditions, such as very hot
weather or a long period of uphill
driving, the reading may reach near
the red mark. If it reaches the red
(Hot) mark, pull saf ely to the side of
theroad.Seepage for
instructions and precautions on
checking the engine’s cooling
system.
Every time you press the display
change button, the display changes
f rom the instant f uel economy to the
temperature gauge, or f rom the
temperature gauge to the instant f uel
economy.
Press and hold the display change
button until you hear a beep. Each
time you press the button, the
speedometer, trip meter, average
f uel mileage and instant f uel
economy readings switches their
measures.
Depending on the selected measures
(mph or km/h), the trip meter and
odometer readings are shown with
miles or km. The average f uel
mileage and instant f uel economy
are shown with mpg or l/100 km.
This display shows the current, or
instant f uel economy you are getting.
It shows the number of mpg or l/100
km. 321
Display Change Button
Temperature Gauge
Instant Fuel Economy
Gauges
66
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2010 Civic Hybrid

Set the temperature to the lower
limit.
Make sure the A/C is of f .
Select and fresh air mode.
Set the f an to the desired speed.
The heater uses engine coolant to
warm the air. If the engine is cold, it
will be several minutes bef ore you
f eel warm air coming f rom the
system. Air conditioning places an extra load
on the engine. Watch the engine
coolant temperature gauge (see page
). If it moves near the red zone,
turn of f the A/C until the gauge
reading returns to normal.
Turn on the A/C by pressing the
button. The indicator in the button
comesonwhenafanspeedis
selected.
Make sure the temperature is set
to maximum cool.
Select .
If the outside air is humid, select
recirculation mode. If the outside
air is dry, select f resh air mode.
Set the f an to the desired speed.
If the interior is very warm, you can
cool it down more rapidly by partially
opening the windows, turning on the
A/C, and setting the fan to
maximum speed in f resh air mode. Air conditioning, as it cools, removes
moisture from the air. When used in
combination with the heater, it
makes the interior warm and dry and
can prevent the windows f rom
f ogging up.
Select .
When you select , the system
automatically switches to the fresh
air mode.
Set the f an to the desired speed.
Adjust the warmth of the air with
the temperature control dial. This setting is suitable f or all driving
conditions whenever the outside
temperature is above 32°F (0°C).
Turn the fan on.
Turn on the air conditioning.
Select and fresh air mode.
Adjust the temperature to your
pref erence.
The ventilation system draws in
outside air, circulates it through the
interior, then releases it through
vents near the rear window.
1.
2.
3.
4.
1.
2.
3.
4.
5.
1.
2.
3. 1.
2.
3.
4. 66
Climat e Cont rol
Ventilation
Using the HeaterUsing the A /C
Dehumidif y the Interior
Features
107
09/07/15 10:44:14 31SNC640_112
2010 Civic Hybrid

µµThe Auto Idle Stop f unction may
activate when you slow down.
The engine will start again when you
release the brake pedal. It will also
restart, even if you are still pressing
the brake pedal, under these
conditions:
You move the shif t lever f rom D
or N to R or L.
You press the accelerator pedal.
You are on an incline, and the
vehicle begins rolling.
To help maximize f uel economy,
your Civic Hybrid has an Auto Idle
Stop f unction. Depending on
environmental conditions and vehicle
operation, the engine will shut of f
when you come to a stop.
The engine coolant is nearly up to
normal operating temperature.
The IMA battery is charged
enough to operate the system.
Outside temperature is between
10 100 degrees F.
The vehicle is not climbing a hill. The shift lever is in D or N.
You are not pressing on the
accelerator pedal.
You are pressing on the brake
pedal.
Fan speed lower f an speeds, in
either AUTO or manual modes.
The f ront window def roster is of f .
Auto Idle Stop
Automatic Transmission (CVT)
A ccording t o driving condit ions
A ccording t o vehicle cont rols
264
09/07/15 11:05:29 31SNC640_269
2010 Civic Hybrid

The reading on the vehicle’s
temperature gauge should stay in
the midrange. If it climbs to the red
mark, you should determine the
reason (hot day, driving up a steep
hill, etc.).
When the instant f uel economy is
shownonthedisplay,the
temperature gauge will interrupt on
the display and blink for several
times if the coolant temperature
rises to 224°F (118°C) or more. At
the same time, the beeper sounds
once.
If your vehicle overheats, you should
take immediate action. The only
indicationmaybethetemperature
gauge climbing to or above the red
mark. Or you may see steam or
spray coming f rom under the hood.If you see steam and/or spray
coming f rom under the hood, turn
of f the engine. Wait until you see
no more signs of steam or spray,
then open the hood.
If you do not see steam or spray,
leave the engine running, and
watch the temperature gauge. If
the high heat is due to overloading,
the engine should start to cool
down almost immediately. If it
does, wait until the temperature
gauge reading comes down to the
midpoint, then continue driving.
If the temperature gauge stays at
the red mark, turn of f the engine.
Saf ely pull to the side of the road.
Put the transmission in Park, and
set the parking brake. Turn of f all
the accessories, and turn on the
hazard warning lights.
1. 2.
3.
4.
CONT INUED
If theEngineOverheats
T aking Care of t he Unexpect ed
321
Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out.
Driving with the temperature gauge
reading at the red mark can cause
serious damage to your engine.
09/07/15 11:13:25 31SNC640_326
2010 Civic Hybrid

Start the engine, and set the
interior temperature to maximum.
Add coolant to the radiator up to
the base of the f iller neck. If you
do not have the proper coolant
mixture available, you can add
plain water. Remember to have
the cooling system drained and
ref illed with the proper mixture as
soon as you can.
Put the radiator cap back on
tightly. Run the engine, and check
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (seeon page ).
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. Put the cap back on
tightly.
Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. Af ter the
pressure releases, push down on
the cap, and turn it until it comes
off.
Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (see
on page ).
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank (see page ). Add coolant if the level is
below the MIN mark.
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 reading
reaches the middle of the
temperature gauge or lower
bef ore checking the radiator. 8. 9.
7. 6. 10.
11.
5.
333
246 333
If theEngineOverheats
Emergency
Towing
Emergency
Towing
322
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
09/07/15 11:13:33 31SNC640_327
2010 Civic Hybrid

Bulb Replacement..........................
Back-up Lights .297
.....................
Brake Lights .296, 297
........
Front Side Marker Lights . 295
...........
Front Turn Signal Light . 295
.................................
Headlights .293
..........................
Parking Lights .295
.........
Rear Side Marker Lights . 296
..........
Rear Turn Signal Lights . 296
............................
Specif ications .339
..............................
Bulbs, Halogen .293
.........................................
Card, PC .170
............................
Capacities Chart .338
.............
Carbon Monoxide Hazard . 52
.............................
Carrying Cargo .252
.............
CAUTION, Explanation of . iii
..................................
Ceiling Light .102
........................
Certif ication Label .336
............................................
Chains .308
....................
Changing a Flat Tire .313
Changing Oil ........................................
How to .286
......................................
When to .277 ...
Charging System Indicator . 62,324
..............
Check Fuel Cap Indicator . 69
............
Checklist, Bef ore Driving . 258
.....................................
Child Saf ety .34
Child Seats .............
LATCH Anchor System . 43
.............................
Lower Anchor .43
............................
Tether Anchor .47
..................
Childproof Door Locks . 82
....................
Cleaning the Wheels .303
.........................
Clock, Setting the .212
........................
CO in the Exhaust .345
............
Cold Weather, Starting in . 259
..............................
Compact Spare .312
.............
Controls, Instruments and . 55
Coolant ........................................
Adding .288
....................................
Checking .246
.........................
Proper Solution .288
...................
Temperature Gauge . 66
Crankcase Emissions Control ........................................
System .345
............
Cruise Control Operation . 214
....
Customer Service Inf ormation . 352...............
DANGER, Explanation of . iii
...................................
Dashboard .3, 56
................
Daytime Running Lights . 75
............
Def ects, Reporting Saf ety . 354
........................
Def og and Def rost .108
................
Def ogger, Rear Window . 76
..............
Def rosting the Windows . 108
....................................
Dimensions .338
...............
Dimming the Headlights . 74
Dipstick ..........
Automatic Transmission . 291
..................................
Engine Oil .245
..........................
Directional Signals .74
Disc Brake Pad Wear ...................................
Indicators .268
............................
Disc Player .121, 160
..................
Display Change Button . 66
.....................
Disposal of Used Oil .288
Doors .
Auto Door Locking/Unlocking . 82
.....................
Auto Door Locking .82
.................
Auto Door Unlocking . 85
..............
Locking and Unlocking . 81
......................
Power Door Locks .81
Index
C D
II
09/07/15 11:17:54 31SNC640_363
2010 Civic Hybrid

Î
CONT INUED
........
DOT Tire Quality Grading . 340
...........
Driver and Passenger Safety . 5
...........................................
Driving .257
....................................
Economy .247
..................
Dust and Pollen Filter . 300
..............................
Economy, Fuel .247
............
Emergencies on the Road . 311
.............
Battery, Jump Starting . 319
...........
Brake System Indicator . 326
................
Changing a Flat Tire . 313
.....
Charging System Indicator . 324
..................
Checking the Fuses . 328
Low Oil Pressure ...........................
Indicator .62, 323
Malf unction Indicator ................................
Lamp .62, 325
..................
Overheated Engine . 321
...........................
Emergency Brake .99
......................
Emergency Flashers .76
......................
Emergency Towing .333
............
Emergency Trunk Opener . 88
.......................
Emissions Controls .345
........................
Emissions Testing .348 Engine
....
Coolant Temperature Gauge . 66
..............
Engine Speed Limiter . 262
Malf unction Indicator ................................
Lamp .62, 325
........
Oil Pressure Indicator . 62,323
..............
Oil, What Kind to Use . 285
...............................
Overheating .321
............................
Specif ications .338
.......................................
Starting .259
.
Evaporative Emissions Controls . 345
...............................
Exhaust Fumes .52
Expectant Mothers, Use of Seat ........................................
Belts by .17
...................................
Fan, Interior .105
.........................................
Features .103
....................
Filling the Fuel Tank . 243
Filters .........................
Dust and Pollen .300
...............................................
Oil .286
.............
Flashers, Hazard Warning . 76
...................
Flat Tire, Changing a . 313Fluids
..........
Automatic Transmission . 291
..........................................
Brake .292
..................
Windshield Washer . 290
FM Stereo Radio ...................................
Reception .204
..........................
Four-way Flashers .76
............................
Front Airbags .10, 22
.................................................
Fuel .242
......................
Fill Door and Cap .243
...........................................
Gauge .67
................
Octane Requirement . 242
...............................
Oxygenated .242
........................
Reserve Indicator .61
........................
Tank, Filling the .243
.....................
Fuses, Checking the .328
...............
Gas Mileage, Improving . 247
Index
F
E
G
INDEX
III
09/07/15 11:18:00 31SNC640_364
2010 Civic Hybrid

..................................................
Keys .78
.........................................
Gasoline .242
...............
Fuel Reserve Indicator . 61
...........................................
Gauge .67
................
Octane Requirement . 242
........................
Tank, Filling the .243
................
Gas Station Procedures . 243
Gauges ...
Engine Coolant Temperature . 66
...............................................
Fuel .67
............
Gearshif t Lever Positions . 260
..........
Automatic Transmission . 260
......................................
Glove Box .101
.............
Halogen Headlight Bulbs . 293
..............
Hazard Warning Flashers . 76
Headlights ........................................
Aiming .293
............
Daytime Running Lights . 75
..................
High Beam Indicator . 60
........................
Reminder Beeper .74
........
Replacing Halogen Bulbs . 293
...................................
Turning on .74
..............................
Head Restraints .92
...............................
Heated Mirrors .99 ...................................
Heaters, Seat .96
.............
High Altitude, Starting at . 259
.................
High-Low Beam Switch . 74
.......................
Hood, Opening the .244
..................................................
Horn .72
...
Identif ication Number, Vehicle . 336
Ignition ..............................................
Keys .78
...........................................
Switch .80
............
Timing Control System . 346
.........
Important Safety Precautions . 6
.........
Indicators, Instrument Panel . 58
...............................
Inf ant Restraint .39
Inf ant Seats ......
LATCH Anchorage System . 43
...........................
Lower Anchors .43
...........................
Tether Anchors .47
.....
Inf lation, Recommended Tire . 304
...................................
Pressures .304
........................
Inf ormation Display .65
...................................
Inside Mirror .98
.............................
Inspection, Tire .305
............................
Instrument Panel .57 ................
Instrument Panel Lights . 58
........
Instrument Panel Brightness . 75
...............................
Interior Lights .102
........................................
Introduction .i
.......................................
iPod
. 130, 183
.................
Jacking up the Vehicle . 313
.......................................
Jack, Tire .313
................................
Jump Starting .319
.......................
Label, Certif ication .336
.................
Lane Change, Signaling . 74
..................
Lap/Shoulder Belts . 15,19
...........
LATCH Anchorage System . 43
Index
I
H J
K
L
IV
09/07/15 11:18:06 31SNC640_365
2010 Civic Hybrid