Page 623 of 709

621
Maintenance
Battery
Checking the Battery
The condition of the battery is monitored by a
sensor located on the negative terminal of the
battery. If there is a problem with this sensor,
the multi-information display will display a
warning message. If this happens, have your
vehicle inspected by a dealer.
Check the battery terminals for corrosion
monthly.
If your vehicle’s battery is disconnected or goes dead:
• The audio system is disabled.
2 Audio System Theft Protection P. 257
•The clock resets.
2 Clock P. 154
•The immobilizer system needs to be reset.
2 Immobilizer System Indicator P. 99
1Battery
WARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.
When you find corrosion, cl ean the battery terminals
by applying a baking powder and water solution.
Clean the terminals with a damp towel. Cloth/towel
dry the battery. Coat the terminals with grease to
help prevent future corrosion.
When replacing the battery, the replacement must be
of the same specifications.
Consult a dealer for more information.
3WARNING
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
When conducting any battery
maintenance, wear prot ective clothing and
a face shield, or have a skilled technician do
it.
Battery
Canadian models only
22 ACURA RDX-31TJB6300.book 621 ページ 2021年8月2日 月曜日 午前11時0分
Page 625 of 709

623Continued
Maintenance
Remote Transmitter Care
Replacing the Remote Battery
If the indicator does not come on when the button is pressed, replace the battery.
1. Remove the built-in key.
2. Pry on the edge of the cover using a flat-tip
screwdriver to remove the cover.
u Wrap the flat-tip screwdriver with a cloth
to prevent scratches.
3. Make sure to replace the battery with the
correct polarity.
1Replacing the Remote Battery
NOTICE
An improperly disposed of battery can damage the
environment. Always conf irm local regulations for
battery disposal.
Replacement batteries are commercially available or
at a dealer.
3WARNING
CHEMICAL BURN HAZARD
The battery that powers the remote
transmitter can cause severe internal burns
and can even lead to death if swallowed.
Keep new and used batteries away from
children.
If you suspect that a child has swallowed
the battery, seek medical attention
immediately.
Models without two-way keyless remote
Battery type: CR2032
Battery Cover
22 ACURA RDX-31TJB6300.book 623 ページ 2021年8月2日 月曜日 午前11時0分
Page 635 of 709

633
Maintenance
Accessories and Modifications
Accessories
When installing accessories, check the following:
• Do not install accessories on the windsh ield. They can obstruct your view and
delay your reaction to driving conditions.
• Do not install any accessories over areas marked SRS Airbag, on the sides or backs
of the front seats, on front or side pillars, or near the side windows.
Accessories installed in these areas may interfere with proper operation of the
vehicle’s airbags or may be propelled into you or another occupant if the airbags
deploy.
• Be sure electronic accessories do not overload electrical circuits or interfere with
proper operation of your vehicle.
2 Fuses P. 674
•Before installing any electro nic accessory, have the installer contact a dealer for
assistance. If possible, have a deal er inspect the final installation.
• It is recommended to use genuine Acura roof bicycle racks for carrying bicycles.
Do not install load-carrying (strap-type) accessory racks to the tailgate, as they
may interfere with normal operation, whic h may result in damage to the tailgate.
1Accessories and Modifications
Acura Genuine accessori es are recommended to
ensure proper operati on on your vehicle.
3WARNING
Improper accessories or modifications can
affect your vehicle’s handling, stability, and
performance, and cause a crash in which
you can be seriously hurt or killed.
Follow all instruction s in this owner’s
manual regarding accessories and
modifications.
22 ACURA RDX-31TJB6300.book 633 ページ 2021年8月2日 月曜日 午前11時0分
Page 637 of 709

635
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
Tools.................................................. 636
If a Tire Goes Flat
Changing a Flat Tire ......................... 637
Temporarily Repairi ng a Flat Tire....... 645
Handling of the Jack ......................... 659
Engine Does Not Start Checking the Engine ........................ 660
If the Keyless Remote Battery is Weak ...661
Emergency Engine Stop ................... 662
Vehicles with a compact spare tire
Vehicles with temporary tire repair kit
Models with temporary tire repair kit
If the Battery Is DeadJump Starting Procedure .................. 663
Overheating ...................................... 665
Indicator, Coming On/Blinking
If the Engine Oil Pressure Low Warning
Appears ............................................. 667
If the Charging System Indicator Comes On .. 668If the Malfunction Indicator Lamp Comes On or Blinks ................................... 668
If the Brake System Indicator (Red) Comes On or Blinks ....................................... 669
If the Electric Power Steering (EPS) System
Indicator Comes On ........................... 670
If the Brake System Indicator (Red) Comes On or Blinks at the Same Time When the Brake
System Indicator (Amber) Comes On .....671
If the Low Tire Pressure/TPMS Indicator Comes On or Blinks ....................... 672
If the Transmission System Indicator Blinks along with the Warning Message .... 673
Fuses .................................................. 674
Emergency Towing ........................... 681
If You Cannot Unlock the Fuel Fill Door.. 682If You Cannot Open the Tailgate .... 683
Refueling ........................................... 684
22 ACURA RDX-31TJB6300.book 635 ページ 2021年8月2日 月曜日 午前11時0分
Page 639 of 709

637Continued
Handling the Unexpected
If a Tire Goes Flat
Changing a Flat Tire
If a tire goes flat while driving, grasp the steering wheel firmly, and brake gradually
to reduce speed. Then, stop in a safe plac e. Replace the flat tire with a compact
spare tire. Go to a dealer as soon as possib le to have the full-size tire repaired or
replaced.
1. Park the vehicle on a firm, level, non-slippery surface and apply the parking brake.
2. Change the gear position to
(P.
3. Turn on the hazard warning lights an d set the power mode to VEHICLE OFF
(LOCK).
Vehicles with a compact spare tire
1 Changing a Flat Tire
Follow compact spare precautions:
Periodically check the tire pressure of the compact
spare. It should be set to the specified pressure.
Specified Pressure: 60 psi (420 kPa, 4.2 kgf/cm
2)
When driving with the compact spare tire, keep the
vehicle speed under 50 mph (80 km/h). Replace with
a full-size tire as soon as possible.
The compact spare tire and wheel in your vehicle are
specifically for this model. Do not use them with
another vehicle. Do not us e another type of compact
spare tire or wheel with your vehicle.
Do not mount tire chains on a compact spare tire.
If a chain-mounted front tire goes flat, remove one of
the full-size rear tires and replace it with the compact
spare tire. Remove the flat front tire and replace it
with the full-size tire that was removed from the rear.
Mount the tire chains on the front tire.
Do not use a puncture-repairi ng agent on a flat tire,
as it can damage the tire pressure sensor.
22 ACURA RDX-31TJB6300.book 637 ページ 2021年8月2日 月曜日 午前11時0分
Page 643 of 709

Continued641
uuIf a Tire Goes Flat uChanging a Flat Tire
Handling the Unexpected
1. Place the jack under the jacking point
closest to the tire to be changed.
2. Turn the end bracket cl ockwise as shown in
the image until the top of the jack contacts
the jacking point.
u Make sure that the jacking point tab is
resting in the jack notch.
3. Raise the vehicle, using the jack handle bar
and the jack handle, until the tire is off the
ground.
■How to Set Up the Jack1How to Set Up the Jack
Do not use the jack with people or luggage in the
vehicle.
Use the jack provided in your vehicle.
Other jacks may not support the weight (“load”) or
may not fit the jacking point.
The following instructions must be followed to use
the jack safely:
•Do not use while the engine is running.
•Use only where the ground is firm and level.
•Use only at the jacking points.•Do not get in the vehicl e while using the jack.
•Do not put anything on top of or underneath the
jack.
3WARNING
The vehicle can easily roll off the jack,
seriously injuring anyone underneath.
Follow the directions for changing a tire
exactly, and never get under the vehicle
when it is supported only by the jack.
Jack
Handle Bar
Wheel Nut Wrench as Jack Handle
22 ACURA RDX-31TJB6300.book 641 ページ 2021年8月2日 月曜日 午前11時0分
Page 645 of 709
Continued643
uuIf a Tire Goes Flat uChanging a Flat Tire
Handling the Unexpected
1. Put the flat tire in the storage bag provided
with your vehicle.
u The storage bag is in the tool box.
2. Knot the top of the storage bag.
3. Securely put the jack, jack handle bar, and
wheel nut wrench back in the tool box.
4. Bore through the bag, and pass the holding
belt through the hole of the bag and the
wheel of the flat tire as shown.
5. Place the flat tire in the cargo area, and
thread the belt through the tie-down
anchor as shown.
6. Pass the belt through the ring, and tighten
the belt to secure the flat tire in place.
■Storing the Flat Tire1Storing the Flat Tire
3WARNING
Loose items can fly around the interior in a
crash and can seriously injure the
occupants.
Store the wheel, jack, and tools securely
before driving.
Belt
Tie-down Anchor
22 ACURA RDX-31TJB6300.book 643 ページ 2021年8月2日 月曜日 午前11時0分
Page 646 of 709

uuIf a Tire Goes Flat uChanging a Flat Tire
644
Handling the Unexpected
If you replace a flat tire with the spare tire, the low tire pressure/TPMS indicator
comes on while you are driving. Afte r driving for a few miles (kilometers), Tire
Pressure Monitor System Problem. Check Tire Pressure. See Your Dealer will
appear on the multi-information display an d the indicator will start blinking for a
short time and then stay on; however, this is normal and is no cause for concern.
If you replace the tire with a full-size tire, the warning message on the multi-
information display and the low tire pressu re/TPMS indicator will go off after a few
miles (kilometers).
■TPMS and the Compact Spare Tire1 TPMS and the Compact Spare Tire
The system cannot monitor th e pressure of the spare
tire. Manually check the spare tire pressure to be sure
that it is correct.
Use the TPMS specific whee ls. Each is equipped with
a tire pressure sensor mount ed inside the tire behind
the valve stem.
22 ACURA RDX-31TJB6300.book 644 ページ 2021年8月2日 月曜日 午前11時0分