2015 Acura RLX radiator

65Safe Driving
Safety LabelsLabel LocationsThese labels are in the locations shown. They warn you of potential hazards that can cause serious injury or death. Read these labels
carefully.
If a label comes off or becomes hard to read (except for the U.S. dashboard label which may be removed by the owner), contact a dealer
for a replacement.
Radiator Cap Dashboard
Doorjambs
Sun Visors
U.S. models Canadian models
U.S. models Canadian models
U.S. models only

87
uuIndicators uMulti-Information Display Warning and Information Messages
Continued
Instrument Panel
*1:On the left: Models with navigation system
On the right: Models without navigation system
Message
*1
Condition
Explanation
●Appears if there is a problem with the radiator
system.
●Drive slowly to prevent overheating and have the
vehicle checked by a dealer as soon as possible.
●Appears when there is a problem with the headlights.
●Appears while driving - The low beam headlights
may not be on. When conditions allow you to drive
safety, have the vehicle checked by a dealer as soon
as possible.
—
●Appears if there is a problem with the parking sensor
system.
●Check if the area around the sensor(s) is covered with
mud, ice, snow, etc. If the indicator(s) stays on even
after you clean the area, have the system checked by
a dealer.
●Appears if the automatic brake hold is automatically
canceled while it is in operation.
●Immediately depress the brake pedal.
●Appears when the automatic brake hold system is
turned off.
2 Automatic Brake Hold P. 388

418Maintenance
Maintenance Under the HoodMaintenance Items Under the Hood
Brake Fluid
(Black Cap)
Washer Fluid
(Black Cap) Engine Oil Dipstick
(Orange Loop) Engine Oil Fill Cap
Battery
Engine Coolant Reserve
Tank
Radiator Cap

426
uuMaintenance Under the Hood uEngine Coolant
Maintenance
Engine CoolantThis coolant is premixed with 50% antifreeze and 50% water. Do not add any
straight antifreeze or water.
We recommend you check the engine coolant level every time you refuel. Check the
reserve tank first. If it is completely empty, also check the coolant level in the
radiator. Add the engine coolant accordingly.
1.Check the amount of coolant in the reserve
tank.
2. If the coolant level is below the MIN mark,
add the specified coolant until it reaches
the MAX mark.
3. Inspect the cooling system for leaks.Specified coolant: Acura Long Life Antifreeze/Coolant Type 2■
Reserve Tank
1Engine CoolantNOTICEIf temperatures consistently below -22°F (-30°C) are
expected, the coolant mixture should be changed to
a higher concentration. Consult a dealer for more
information.
If Honda antifreeze/coolant is not available, you may
use another major brand non-silicate coolant as a
temporary replacement. Check that it is a high quality
coolant recommended for aluminum engines.
Continued use of any non-Honda coolant can result
in corrosion, causing the cooling system to
malfunction or fail. Have the cooling system flushed
and refilled with Honda antifreeze/coolant as soon as
possible.
Do not add rust inhibitors or other additives to your
vehicle’s coolant system. They may not be compatible
with the coolant or with the engine components.
Reserve
Tank MAX
MIN

427
uuMaintenance Under the Hood uEngine Coolant
Maintenance
1. Make sure the engine and radiator are
cool.
2. Remove the engine compartment cover.
2 Engine Compartment Cover P. 420
3.Turn the radiator cap counterclockwise and
relieve any pressure in the coolant system.
Do not push the cap down when turning.
4. Push down and turn the radiator cap
counterclockwise to remove it.
5. The coolant level should be up to the base
of the filler neck. Add coolant if it is low.
6. Put the radiator cap back on, and tighten it
fully.
7. Pour coolant into the reserve tank until it
reaches the MAX mark. Put the cap back
on the reserve tank.
■
Radiator
1 RadiatorNOTICEPour the fluid slowly and carefully so you do not spill
any. Clean up any spills immediately; they can
damage components in the engine compartment.
3
WARNING
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.
Radiator Cap

uuOverheating uHow to Handle Overheating
482Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
stop the engine once the temperature
gauge needle comes down.
u If the cooling fan is not operating,
immediately stop the engine.
2. Once the engine has cooled down, inspect
the coolant level and check the cooling
system components for leaks.
u If the coolant level in the reserve tank is
low, add coolant until it reaches the
MAX mark.
u If there is no coolant in the reserve tank,
check that the radiator is cool. Cover the
radiator cap with a heavy cloth and open
the cap. If necessary, add coolant up to
the base of the filler neck, and put the
cap back on.■Last thing to do
Once the engine has cooled sufficiently, restart it and check the temperature gauge.
If the temperature gauge needle has gone down, resume driving. If it has not gone
down, contact a dealer for repairs.
1 How to Handle Overheating
If the coolant is leaking, contact a dealer for repairs.
Use water as an emergency/temporary measure only.
Have a dealer flush the system with proper antifreeze
as soon as possible.
3
WARNING
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.
Reserve
Tank MAX
MIN

513Index
Belts (Seat).................................................. 30
Beverage Holders ..................................... 166
Blind Spot Information (BSI) System ....... 379
Bluetooth® Audio..................................... 251
Bluetooth® HandsFreeLink® .................... 286
Booster Seats (For Children) ...................... 63
Brake System ............................................ 385
Anti-lock Brake System (ABS) .................. 390
Automatic Brake Hold ............................. 388
Brake Assist System................................. 391
Fluid ....................................................... 429
Foot Brake .............................................. 387
Parking Brake.......................................... 385
Brake System (Amber)
Indicator ................................................... 70
Brake System (Red) Indicator ........................................... 68, 484
Brake System Indicator (Amber) ............... 70
Brightness Control (Instrument Panel) ... 144
BSI (Blind Spot Information) System ....... 379
Bulb Replacement .................................... 430
Back-Up Lights ........................................ 434
Brake/Taillights and Rear Side Marker Lights .................................................... 433
Door Outer Handle Ambient Lights ......... 435
Front Side Marker Lights ......................... 432
Front Turn Signal/Parking Lights .............. 431
Headlights .............................................. 430
High-Mount Brake Light.......................... 435
Rear License Plate Lights ......................... 435
Rear Turn Signal Lights............................ 433 Side Turn Signal/Emergency Indicator
Lights .................................................... 432
Taillights .................................................. 434
Bulb Specifications ................................... 498
CCarbon Monoxide Gas ................................ 64
Cargo Hooks ............................................. 169
Carrying Cargo .................................. 335, 337
CD Player ................................................... 224
Center Pocket ........................................... 165
Certification Label .................................... 500
Changing Bulbs ......................................... 430
Charging System Indicator ................. 71, 483
Child Safety ................................................. 52
Childproof Door Locks ............................. 123
Child Seat .................................................... 52
Booster Seats ............................................. 63
Child Seat for Infants ................................. 54
Child Seat for Small Children ..................... 55
Installing a Child Seat with a Lap/Shoulder Seat Belt.......................................................... 59
Larger Children .......................................... 62
Rear-facing Child Seat ............................... 54
Selecting a Child Seat ................................ 56
Using a Tether ........................................... 61
Childproof Door Locks ............................. 123
Cleaning the Exterior ............................... 453
Cleaning the Interior ................................ 451
Client Service Information ....................... 508Climate Control System
............................ 177
Changing the Mode ................................ 180
Defrosting the Windshield and Windows ............................................... 184
Dust and Pollen Filter............................... 450
Rear Temperature Control Dial ................ 185
Sensors ................................................... 186
Using Automatic Climate Control ............ 177
Clock .......................................................... 114
CMBS
TM (Collision Mitigation Braking
SystemTM) ................................................. 392
Coat Hooks ............................................... 168
Collision Mitigation Braking System
TM
(CMBS
TM) ................................................. 392
Compact Spare Tire (Optional) ........ 468, 499
Console Compartment ............................. 164
Controls ..................................................... 113
Coolant (Engine) ...................................... 426
Adding to the Radiator ............................ 427
Adding to the Reserve Tank..................... 426
Overheating ............................................ 481
Creeping (Automatic Transmission) ........ 344
Cruise Control ........................................... 350
Indicator.................................................... 78
Cup Holders .............................................. 166
Customized Features ........................ 102, 263
DDaytime Running Lights .......................... 140
Dead Battery ............................................. 477

514Index
Defrosting the Windshield and Windows .................................................. 184
Devices that Emit Radio Waves ................ 501
Dimming Headlights ............................................... 137
Rearview Mirror ....................................... 149
Dipstick (Engine Oil) ................................. 422
Directional Signals (Turn Signal) .............. 136
Door Mirrors ............................................. 150
Doors ......................................................... 115
Auto Door Locking .................................. 124
Auto Door Unlocking ............................... 124
Door Open Indicator ............................ 29, 75
Keys ........................................................ 115
Locking/Unlocking the Doors from the Inside ......................................... 12, 121
Locking/Unlocking the Doors from
the Outside ............................................ 117
Lockout Prevention System ...................... 120
DOT Tire Quality Grading ........................ 442
Driver’s Knee Airbag .................................. 44
Driving ....................................................... 333
Automatic Transmission ........................... 344
Braking .................................................... 385
Cruise Control ......................................... 350
Shifting Gear ........................................... 345
Starting the Engine .................................. 340
Driving Position Memory System ............. 146
Dust and Pollen Filter ............................... 450
EElapsed Time............................................. 100
Electric Parking Brake Indicator.................................................... 69
Electric Parking Brake System
Indicator............................................ 69, 485
Electric Power Steering (EPS) System Indicator............................................ 74, 485
Electronic Stability Control (ESC) ............. 376
Emergency ................................................ 492
Emissions Testing (Readiness Codes) ....... 503
Engine ....................................................... 500
Coolant ................................................... 426
Jump Starting .......................................... 477
Oil ........................................................... 421
Starting ................................................... 340
Switch Buzzer.......................................... 133
Engine Compartment Cover .................... 420
Engine Coolant ......................................... 426
Adding to the Radiator ............................ 427
Adding to the Reserve Tank..................... 426
Overheating ............................................ 481
Temperature Gauge .................................. 94
Engine Oil ................................................. 421
Adding .................................................... 423
Checking................................................. 422
Displaying Oil Life .................................... 414
Low Oil Pressure Indicator ................. 68, 483
Recommended Engine Oil ....................... 421
ENGINE START/STOP Button .................... 133
e-pretensioners ........................................... 32 EPS (Electric Power Steering) System
........ 74
Exhaust Gas Hazard (Carbon Monoxide) .. 64
Expanded Rear Door Sunshades ............. 176
Expanded View Driver’s Mirror ............... 151
Exterior Care (Cleaning) .......................... 453
Exterior Mirrors ........................................ 150
FFeatures.................................................... 187
Filters Dust and Pollen....................................... 450
Oil .......................................................... 424
Flat Tire ..................................................... 457
Floor Mats ................................................ 452
Fluids
Automatic Transmission .......................... 428
Brake ...................................................... 429
Engine Coolant ....................................... 426
Windshield Washer ................................. 429
Foot Brake ................................................ 387
Forward Collision Warning (FCW) .......... 364
Front Airbags (SRS) .................................... 40
Front Seat Heaters and Seat
Ventilation .............................................. 173
Front Seats ................................................ 152
Adjusting ................................................ 152
Fuel ..................................................... 18, 404
Economy................................................. 406
Gauge ...................................................... 94
Instant Fuel Economy .............................. 100