engine coolant ACURA RDX 2022 User Guide

590
Maintenance
Maintenance Under the Hood
Maintenance Items Under the Hood
Brake Fluid
(Black Cap)
Engine Coolant
Reserve Tank Radiator Cap
Washer Fluid
(Black Cap) Engine Oil Dipstick
(Orange)
Engine Oil Fill Cap
Battery
22 ACURA RDX-31TJB6300.book 590 ページ ２０２１年８月２日　月曜日　午前１１時０分

598
uuMaintenance Under the Hood uEngine Coolant
Maintenance
Engine Coolant
This 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. Make sure the engine and radiator are cool.
2. Check the amount of coolant in the reserve
tank.
u 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 Coolant
NOTICE
Genuine Acura engine cool ant is a 50/50 mixture of
antifreeze and water that can withstand freezing at
temperatures as low as a bout -31°F (-35°C). If your
vehicle is consistently subjected to temperatures
below this, the concentration of antifreeze in the
coolant should be increased. Consult a dealer for
details.
If Acura antifreeze/coolant is not available, you may
use another major brand of non-silicate coolant as a
temporary replacement. Check that it is a high quality
coolant recommended for aluminum engines.
Continued use of any non-Ac ura coolant can result in
corrosion, causing the coo ling system to malfunction
or fail. Have the cooling system flushed and refilled
with Acura antifreeze/cool ant as soon as possible.
Do not add rust inhibitors or other additives to your
vehicle’s cooling system. Th ey may not be compatible
with the coolant or with the engine components.
Reserve TankMAXMIN
22 ACURA RDX-31TJB6300.book 598 ページ ２０２１年８月２日　月曜日　午前１１時０分

599
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. 592
3.Turn the radiator cap 1/8 turn counter-
clockwise and relieve any pressure in the
cooling system.
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.
■Radiator1Radiator
NOTICE
Pour the fluid slowly and ca refully so you do not spill
any. Clean up any spills immediately; they can
damage components in the engine compartment.
3WARNING
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
22 ACURA RDX-31TJB6300.book 599 ページ ２０２１年８月２日　月曜日　午前１１時０分

Continued631
uuCleaning uExterior Care
Maintenance
A good coat of automotive body wax helps protect your vehicle’s paint from the
elements. Wax will wear off over time and expose your vehicle’s paint to the
elements, so reapply as necessary.
Your vehicle’s paint requires up to 60 da ys from the production date to fully cure.
During this time, avoid applying any wax or paint sealant-type products, as they
could inhibit the curing process and affect the paint’s durability.
You may polish the paint during these 60 days if the polish does not contain any wax
or paint sealant ingredients. Use only clean , high-quality microfiber towels or pads,
as they are a softer material with less chance of scratching the finish. It is absolutely
necessary to keep the microf iber towels or pads properly cleaned and maintained
before using on your vehicle.
If you get gasoline, oil, engine coolant, or battery fluid on resin coated parts, they
may be stained or the coating may peel. Prom ptly wipe it away using a soft cloth and
clean water.
Wipe using a glass cleaner.
■Applying Wax
■Maintaining the Bumpers and Other Resin Coated Parts
■Cleaning the Window
1 Applying Wax
NOTICE
Chemical solvents and strong cleaners can damage
the paint, metal, and plasti c on your vehicle. Wipe
away spills immediately.
Models with PMC emblem on the console
1 Maintaining the Bumpers an d Other Resin Coated Parts
Ask a dealer about the corr ect coating material when
you want to repair the painted surface of the parts
made of resin.
22 ACURA RDX-31TJB6300.book 631 ページ ２０２１年８月２日　月曜日　午前１１時０分

uuOverheating uHow to Handle Overheating
666
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
stop the engine once the temperature
gauge goes down.
u If the cooling fan is not operating,
immediately stop the engine.
2. Once the engine has cooled down, inspect
the coolant level an d 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 coolan t 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 has gone down, re sume 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.
Continuing to drive with the Engine Temperature
Too Hot. Do Not Drive. Allow Engine To Cool.
message on the multi-in formation display may
damage the engine.
3WARNING
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 TankMAXMIN
22 ACURA RDX-31TJB6300.book 666 ページ ２０２１年８月２日　月曜日　午前１１時０分

687
uuSpecifications u
Information
■
Brake Fluid
■ Automatic Tran smission Fluid
*1: 2WD models
*2: AWD models
■
Rear Differential Fluid*
■Transfer Assembly Fluid*
SpecifiedAcura Heavy Duty Brake Fluid DOT 3
SpecifiedAcura ATF-type 2.0
Capacity Change 4.5 US qt (4.3 L)*1
5.1 US qt (4.8 L)*2
SpecifiedAcura DPSF-II
Capacity Change 1.76 US qt (1.67 L)
SpecifiedAcura HGO-1
Capacity Change 0.61 US qt (0.58 L)
■ Engine Oil
■ Engine Coolant
Recommended·Acura Genuine Motor Oil 0W-20
·API Premium-grade 0W-20 detergent oil
Capacity Change 4.6 US qt (4.4 L)
Change
including
filter
5.0 US qt (4.8 L)
SpecifiedAcura Long Life Antifreeze/Coolant Type 2
Ratio 50/50 with distilled water
Capacity1.43 US gal (5.40 L)
(change including the remaining 0.23 US gal
(0.86 L) in the reserve tank)
■ Tire
*1: Models with 19 inch wheel
*2: Models with 20 inch wheel
RegularSize235/55R19 101H*1
255/45R20 101V*2
Pressure
psi (kPa [kgf/cm2])33 (230 [2.3])*1
36 (250 [2.5])*2
Compact
Spare*
Size T155/90D17 101M
Pressure
psi (kPa [kgf/cm
2]) 60 (420 [4.2])
Wheel SizeRegular19 x 8J*1
20 x 8J*2
Compact Spare*17 x 4T
* Not available on all models
22 ACURA RDX-31TJB6300.book 687 ページ ２０２１年８月２日　月曜日　午前１１時０分

Index
698
Index
Index
A
ABS (Anti-lock Brake System)................... 552
Accessories and Modifications ................. 633
Accessory Power Socket ........................... 239
Acura Integrated Dynamics System ......... 459
Dynamic Mode Switch ............................. 460
AcuraLink® ............................................... 419
AcuraWatch
TM........................................... 483
Adaptive Cruise Control (ACC) with Low Speed Follow ........................... 102, 502
Additives
Coolant ................................................... 598
Engine Oil ................................................ 593
Washer .................................................... 602
Additives, Engine Oil ................................ 593
Adjusting Armrest ................................................... 229
Front Seats .............................................. 216
Head Restraints........................................ 225
Mirrors .................................................... 213
Rear Seats................................................ 222
Steering Wheel ........................................ 212
Agile Handling Assist ................................ 473
Air Conditioning System (Climate Control System) .................................................... 247
Changing the Mode ................................ 247
Defrosting the Windshield and Windows ............................................... 249
Dust and Pollen Filter ............................... 626
Rear Temperature Control Dial................. 251
Recirculation/Fresh Air Mode ................... 247 Sensors ................................................... 252
Synchronized Mode................................. 250
Using Automatic Climate Control ............ 247
Air Pressure ....................................... 613, 687
Airbags ........................................................ 46
Advanced Airbags ..................................... 52
After a Collision ........................................ 49
Airbag Care............................................... 63
Front Airbags (SRS) .................................... 49
Indicator.............................................. 60, 95
Knee Airbags............................................. 54
Passenger Airbag Off Indicator .................. 61
Sensors ..................................................... 46
Side Airbags .............................................. 57
Side Curtain Airbags.................................. 59
AM/FM Radio ............................................ 293
Amazon Alexa .......................................... 289
Android Auto ........................................... 327
Anti-lock Brake System (ABS) .................. 552
Indicator.................................................... 94
Apple CarPlay ........................................... 322
Armrest ..................................................... 229
AT&T Hotspot ........................................... 321
Audio Remote Controls ........................... 258
Audio System ............................................ 254
Adjusting the Sound................................ 287
Audio/Information Screen........................ 264
Display Setup .......................................... 288
Error Messages ........................................ 332
General Information ................................ 336
Home Screen........................................... 269 How to Update Wirelessly ....................... 281
How to Update with a USB Device .......... 285
iPod ........................................................ 310
Limitations for Manual Operation ............ 288
MP3/WMA/AAC ..................................... 313
Reactivating ............................................ 257
Remote Controls ..................................... 258
Security Code ......................................... 257
Status Area ............................................. 274
System Updates ...................................... 281
Theft Protection ...................................... 257
True Touchpad Interface ......................... 261
USB Flash Drives.............................. 313, 338
USB Ports ................................................ 255
Audio/Information Screen ....................... 264
Authorized Manuals ................................ 696
Auto Door Locking/Unlocking ................ 172
Auto High-Beam ...................................... 201
Indicator ................................................... 98
Auto Idle Stop .......................................... 464
OFF Button ............................................. 466
Automatic Brake Hold ............................. 550
Indicator ........................................... 85, 550
Automatic Folding Door Mirror .............. 215
Automatic Intermittent Wipers .............. 205
Automatic Lighting .................................. 198
Automatic Transmission .......................... 450
Creeping................................................. 450
Fluid ....................................................... 600
Kickdown ............................................... 450
Operating the Shift Button ...................... 453
22 ACURA RDX-31TJB6300.book 698 ページ ２０２１年８月２日　月曜日　午前１１時０分

699
Index
Sequential Shift Mode............................. 457
Shifting ................................................... 451
Average Fuel Economy ............................ 141
AWD ......................................................... 474
B
Battery ...................................................... 621
Charging System Indicator ................ 87, 668
If the Battery Is Dead............................... 663
Maintenance (Checking the Battery) ....... 621
Belts (Seat) .................................................. 37
Beverage Holders ..................................... 235
Blind Spot Information System ............... 479
Bluetooth ® Audio ..................................... 316
Bluetooth ® HandsFreeLink ®................... 389
Booster Seats (For Children) ...................... 76
Brake System ............................................ 545
Anti-lock Brake System (ABS) .................. 552
Automatic Brake Hold ............................. 550
Brake Assist System................................. 553
Fluid ....................................................... 601
Foot Brake .............................................. 549
Indicator ............................... 81, 82, 83, 669
Indicator (Red) ........................................ 671
Parking Brake.......................................... 545
Brightness Control (Instrument Panel) ... 208
Built-in Key ............................................... 157
Bulb Replacement .................................... 603
Fog Lights ............................................... 603 Front Turn Signal,
Parking/Daytime
Running and Front Side Marker Lights ... 603
Headlights ............................................... 603
High-Mount Brake Light .......................... 606
Puddle Lights ........................................... 606
Rear License Plate Light ........................... 606
Rear Turn Signal Light Bulbs .................... 604
Side Turn Signal/Em ergency Indicator
Lights .................................................... 603
Taillights, Brake and Rear Side Marker
Lights .................................................... 605
Taillights/Brake and Back-Up Lights .......... 606
Bulb Specifications ................................... 686
C
CAMERA Button....................................... 567
Carbon Monoxide Gas ................................ 77
Carrying Cargo .................................. 431, 433
Certification Label .................................... 688
Changing Bulbs ......................................... 603
Charging System Indicator ................. 87, 668
Child Safety ................................................. 64
Childproof Door Locks ............................. 171
Child Seat .................................................... 64
Booster Seats ............................................. 76
Child Seat for Infants ................................. 66
Child Seat for Small Children ..................... 67
Installing a Child Seat with a Lap/Shoulder Seat Belt .................................................. 71
Larger Children .......................................... 75 Rear-facing Child Seat ............................... 66
Selecting a Child Seat ................................ 68
Childproof Door Locks ............................. 171
Cleaning the Exterior ............................... 629
Cleaning the Interior ................................ 627
Client Service Information ....................... 697
Climate Control System ............................ 247
Changing the Mode ................................ 247
Defrosting the Windshield and Windows ............................................... 249
Dust and Pollen Filter............................... 626
Rear Temperature Control Dial ................ 251
Recirculation/Fresh Air Mode ................... 247
Sensors ................................................... 252
Synchronized Mode................................. 250
Using Automatic Climate Control ............ 247
Clock .......................................................... 154
CMBSTM (Collision Mitigation Braking
SystemTM) ................................................. 486
Coat Hook ................................................. 237
Collision Mitigation Braking System
TM
(CMBSTM) ................................................. 486
Compact Spare Tire .......................... 637, 687
Console Compartment ............................. 234
Controls ..................................................... 153
Coolant (Engine) ...................................... 598
Adding to the Radiator ............................ 599
Adding to the Reserve Tank..................... 598
Overheating ............................................ 665
Creeping (Automatic Transmission) ........ 450
Cross Traffic Monitor ............................... 560
22 ACURA RDX-31TJB6300.book 699 ページ ２０２１年８月２日　月曜日　午前１１時０分

700
Index
Cup Holders............................................... 235
Customized Features ................................ 359
D
Daytime Running Lights ........................... 200
Dead Battery ............................................. 663
Defaulting All the Settings ...................... 385
Defrosting the Windshield and Windows .................................................. 249
Devices that Emit Radio Waves ................ 689
Dimming Headlights ............................................... 197
Rearview Mirror ....................................... 213
Dipstick (Engine Oil) ................................. 594
Directional Signals (Turn Signal) .............. 196
Door Mirrors ............................................. 214
Doors ......................................................... 156
Auto Door Locking .................................. 172
Auto Door Unlocking ............................... 172
Keys ........................................................ 156
Locking/Unlocking the Doors from the Inside ..................................................... 169
Locking/Unlocking the Doors from the
Outside .................................................. 160
Lockout Prevention System ...................... 167
DOT Tire Quality Grading ........................ 615
Driving ....................................................... 429
Automatic Transmission ........................... 450
Braking .................................................... 545
Off-Highway Driving Guidelines ............... 441 Shifting Gear ........................................... 451
Starting the Engine.................................. 443
Driving Position Memory System ............ 210
Dust and Pollen Filter ............................... 626
Dynamic Mode Switch ............................. 460
E
Electric Parking Brake
Switch ..................................................... 545
Electric Power Steering (EPS) System Indicator............................................ 95, 670
Electronic Stability Control (ESC) ............. 471
Emergency ................................................ 681
Emissions Testing (Readiness Codes) ....... 691
Engine ....................................................... 688
Coolant ................................................... 598
If the Battery Is Dead ............................... 663
Oil ........................................................... 593
Remote Engine Start................................ 445
Starting ................................................... 443
Engine Compartment Cover .................... 592
Engine Coolant ......................................... 598
Adding to the Radiator ............................ 599
Adding to the Reserve Tank..................... 598
Overheating ............................................ 665
Temperature Gauge ................................ 136
Engine Oil ................................................. 593
Adding .................................................... 595
Checking................................................. 594
Displaying Oil Life .................................... 584 Engine Oil Pressure Low Warning ............ 667
Recommended Engine Oil ....................... 593
ENGINE START/STOP Button .................... 193
EPS (Electric Power Steering) System ...... 670
Exhaust Gas Hazard (Carbon Monoxide) .. 77
Exterior Care (Cleaning) .......................... 629
Exterior Mirrors ........................................ 214F
Features.................................................... 253
Filters Dust and Pollen....................................... 626
Oil .......................................................... 596
Flat Tire ............................................. 637, 645
Floor Mats ................................................ 628
Fluids Automatic Transmission .......................... 600
Brake ...................................................... 601
Engine Coolant ....................................... 598
Windshield Washer ................................. 602
FM/AM Radio ........................................... 293
Fog Lights Indicator ................................................... 98
Folding Down the Rear Seats .................. 222
Foot Brake ................................................ 549
Front Airbags (SRS) .................................... 49
Front Seats ................................................ 216
Adjusting ................................................ 216
Front Sensor Camera ............................... 541
22 ACURA RDX-31TJB6300.book 700 ページ ２０２１年８月２日　月曜日　午前１１時０分

703
Index
Interior.................................................... 230
Light Switches......................................... 197
Lights On Indicator.................................... 98
Turn Signals and Hazard Warning ........... 196
Load Limits ............................................... 433
Locking/Unlocking ................................... 156
Auto Door Locking/Unlocking ................. 172
Childproof Door Locks ............................ 171
From Inside ............................................. 169
From Outside .......................................... 160
Keys........................................................ 156
Using a Key............................................. 166
Lockout Prevention System ..................... 167
Low Battery Charge ................................. 668
Low Fuel Indicator ..................................... 94
Low Speed Braking Control .................... 497
Lower Anchors ..................................... 69, 73
Luggage (Maximum Load Limit) ............. 433
Lumbar Support ....................................... 216
M
Maintenance.................................... 142, 579
Battery .................................................... 621
Brake Fluid .............................................. 601
Cleaning ................................................. 627
Climate Control System .......................... 625
Coolant .................................................. 598
Maintenance Minder
TM............................ 583
Oil .......................................................... 594
Precautions ............................................. 580 Radiator .................................................. 599
Remote Transmitter ......................... 623, 624
Replacing Light Bulbs ............................... 603
Safety ...................................................... 581
Service Items ........................................... 587
Tires ........................................................ 612
Transmission Fluid ................................... 600
Under the Hood ...................................... 590
Malfunction Indicator Lamp .............. 86, 668
Map Lights ................................................ 231
Maximum Load Limit ............................... 433
Meters, Gauges ......................................... 136
Mirrors ....................................................... 213
Adjusting ................................................. 213
Door ........................................................ 214
Exterior .................................................... 214
Interior Rearview ..................................... 213
Modifications (and Accessories) .............. 633
MP3 ........................................................... 313
MP3/WMA/AAC ........................................ 313
Multi-Information Display ....................... 137
Switching the Display .............................. 139
Warning and Information Messages ........ 107
Multi-View Rear Camera .......................... 564
N
Navigation................................................ 141
Numbers (Identification) .......................... 688
O
Odometer................................................. 137
Off-Highway Driving Guidelines ............. 441
Oil (Engine) ............................................... 593
Adding .................................................... 595
Checking................................................. 594
Displaying Oil Life .................................... 584
Engine Oil Pressure Low Warning ............ 667
Recommended Engine Oil ............... 593, 687
Viscosity .......................................... 593, 687
Open Source Licenses ............................... 353
Opening/Closing Hood....................................................... 591
Panoramic Roof ....................................... 189
Power Windows ...................................... 186
Tailgate ................................................... 173
Outside Temperature Display .................. 137
Overheating .............................................. 665
P
Paddle Shifters (Sequential Shift
Mode) ...................................................... 457
Panic Mode ............................................... 185
Panoramic Roof ........................................ 189
Parking ...................................................... 554
Parking Brake ........................................... 545
Parking Brake and Brake System Indicator .................................................. 669
Parking Brake and Brake System
Indicator (Amber) ..................................... 83
22 ACURA RDX-31TJB6300.book 703 ページ ２０２１年８月２日　月曜日　午前１１時０分