engine Acura RLX HYBRID 2020 User Guide
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Safe Driving
Exhaust Gas Hazard
Carbon Monoxide Gas
The engine exhaust from this vehicle contains carbon monoxide, a colorless, 
odorless, and highly toxic gas. As long as you properly maintain your vehicle, carbon 
monoxide gas will not get into the interior.
■Have the exhaust system inspected for leaks whenever
• The exhaust system is m aking an unusual noise.
• The exhaust system may have been damaged.
• The vehicle is raised for an oil change.
When you operate a vehicle with the trunk open, airflow can pull exhaust gas into 
the interior and create a hazardous condition.  If you must drive with the trunk open, 
open all the windows and  set the climate control system as shown below.
1. Select the fresh air mode.
2. Select the   mode.
3. Set the fan speed to high.
4. Set the temperature control to a comfortable setting.
Adjust the climate control system in the  same manner if you sit in your parked 
vehicle with the engine running.
1 Carbon Monoxide Gas
An enclosed area such as a garage can quickly fill up 
with carbon monoxide gas.
Do not turn the power system on with the garage 
door closed. Even when th e garage door is open, 
drive out of the garage i mmediately after turning the 
power system on.
3WARNING
Carbon monoxide gas is toxic.
Breathing it can cause unconsciousness and 
even kill you.
Avoid any enclosed areas or activities that 
expose you to carbon monoxide.
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Instrument Panel
Indicators
IndicatorNameOn/BlinkingExplanationMessage
Brake System 
Indicator (Red)
•Comes on for a few seconds when 
you set the power mode to ON, then 
goes off.
• Comes on when the brake fluid level 
is low.
• Comes on if there  is a problem with 
the brake system.• Comes on while driving  - Check the 
brake fluid level.
2 What to do when the indicator comes 
on while driving  P. 568
•Comes on along with the brake system 
indicator (amber)  - Immediately stop in a 
safe place. Contact a  dealer for repair. The 
brake pedal becomes harder to operate. 
Depress the pedal further than you 
normally do.
• Comes on along with  the ABS indicator 
- Have your vehicle checked by a dealer.
2 If the Brake System Indicator (Red) 
Comes On P. 568
Low Oil Pressure 
Indicator
•Comes on when you set the power 
mode to ON, and goes off when the 
power system starts.
• Comes on when the engine oil 
pressure is low.•Comes on while driving  - Immediately 
stop in a safe place.
2 If the Low Oil Pressure Indicator 
Comes On P. 567
U.S.
Canada
(Red)
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uuIndicators u
Continued
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
Malfunction 
Indicator Lamp
•Comes on when you set the power 
mode to ON, and goes off either 
when the power system is on or after 
several seconds if the power system 
did not turn on. If “readiness codes” 
have not been set, it blinks five times 
before it goes off.
• Comes on if there is a problem with 
the emissions control system.
• Blinks when a misfire in the engine’s 
cylinders is detected.•Readiness codes are part of the on board 
diagnostics for the emissions control 
systems.
2 Testing of Readiness Codes P. 591
•Comes on while driving  - Have your 
vehicle checked by a dealer.
• Blinks while driving  - Stop in a safe place 
where there are no flammable objects. Stop 
the power system for 10 minutes or more, 
and wait for it to cool down. Then, take the 
vehicle to a dealer.
2 If the Malfunction Indicator Lamp 
Comes On or Blinks  P. 568
12-Volt Battery 
Charging System 
Indicator
•Comes on when you set the power 
mode to ON, and goes off when the 
power system is on.
• Comes on when the 12-volt battery 
is not charging.•Comes on while driving  - Turn off the 
climate control system and rear defogger in 
order to reduce electricity consumption.
2 If the 12-Volt Battery Charging System 
Indicator Comes On  P. 567
Gear Position 
Indicator•Indicates the current gear position.2 Shifting P. 385—
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uuIndicators u
Continued
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
High 
Temperature 
Indicator
•Comes on for a few seconds when 
you set the power mode to ON, then 
goes off.
• Blinks when the engine coolant 
temperature goes up, and stays on if 
the temperature continues to rise.•Blinks while driving - Drive slowly to 
prevent overheating.
•Stays on while driving  - Immediately 
stop in a safe place an d allow the engine to 
cool.
2 Overheating  P. 565
Low Temperature 
Indicator
•Comes on for a few seconds when 
you set the power mode to ON, then 
goes off.
• Comes on when the engine coolant 
temperature is low.•If the indicator stays on after the engine has 
reached normal operating temperature, 
there may be problem with the 
temperature sensors. Have your vehicle 
inspected by a dealer.
—
Vehicle Stability 
AssistTM (VSA ®) 
System Indicator
• Comes on for a few seconds when 
you set the power mode to ON, then 
goes off.
• Blinks when VSA ® is active.
• Comes on if there is a problem with 
the VSA® system.•Stays on constantly  - Have your vehicle 
checked by a dealer.
2 Vehicle Stability AssistTM (VSA ®), aka 
Electronic Stability Control (ESC), 
System  P. 439
Vehicle Stability 
AssistTM (VSA®) 
OFF Indicator
• Comes on for a few seconds when 
you set the power mode to ON, then 
goes off.
• Comes on when you partially disable 
VSA ®.
2VSA ® On and Off  P. 440—
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uuIndicators uMulti-Information Display Warning and Information Messages
Continued
Instrument Panel
MessageConditionExplanation
• Appears when the washer fluid is low.•Refill the washer fluid.
2 Refilling Window Washer Fluid  P. 513
•Appears if there is a problem with e-pretensioner 
system.•Have your vehicle checked by a dealer.
•Appears when the scheduled maintenance is due soon.
• Consequently,  Maintenance Due Now  and 
Maintenance Past Due  follow.
2Maintenance Minder Messages on the Multi-
Information Display  P. 497
•Appears if the temperature of the transmission is too 
high and the vehicle cannot drive normally.•It may be difficult to accelerate or start uphill.
• Immediately stop in a safe place.
• Until the message goes off, al low the engine to idle so 
that the transmission can cool down.
• Immediately after the message goes off, have your 
vehicle checked by a dealer.
•Appears when you attempt to change to another gear 
position with the transmission in 
(P and the power 
system OFF.
• To select another gear position while in (P, the power 
system must be ON.
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uuIndicators uMulti-Information Display Warning and Information Messages
Continued
Instrument Panel
MessageConditionExplanation
• Appears after the 12-volt battery charging system 
indicator comes on.•Your vehicle has less ability  to accelerate and may be 
harder to start on an incline.
• Contact a dealer immediately.
•Appears when the High Volt age battery temperature is 
too low to operate (approx.  -22°F [-30°C] or below).•You can start the engine an d use the climate control 
system to warm up the interior, which will also warm 
the High Voltage battery e nough for you to drive the 
vehicle.
• The engine speed does not in crease even if you fully 
depress the accelerator pedal.
• Appears when the High Voltage battery and other 
system control temperatures are too low to operate 
(approx. -40°F [-40°C] or below).•You must wait for an increase in the ambient 
temperature or move the vehicle to a warmer location.
• Contact a dealer if necessary.
•Appears when the rear mo tor fluid temperature is 
extremely low.• The vehicle speed is temporarily limited up to 74 mph 
(120 km/h). This is canceled after the fluid temperature 
rises.
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uuIndicators uMulti-Information Display Warn ing and Information Messages
Instrument Panel
MessageConditionExplanation
•Appears if the AWD system has a problem due to a 
hybrid system or power distribution control failure.•Set the power mode to OFF, then set it back to ON.
Have your vehicle checked by  a dealer if the message 
appears again.
• Appears when the High Voltage battery is running 
extremely low due to continuous slow driving.•Driving at low speed for a long time decreases the 
amount of electricity generated, leading to High 
Voltage battery drain.
•Appears when the High Voltage battery is drained even 
further and a stop is needed to charge the battery.•Stop in a safe place in (P, then charge the High Voltage 
battery by letting the engine idle.
2 If the 12-Volt Battery Charging System Indicator 
Comes On  P. 567
•Appears when the High Voltage battery is being 
charged, after it has lost most of its charge. In this case, 
the vehicle is parked and the engine is running to 
supply power to the charging system.•Do not drive the vehicle until  READY indicator comes 
on.
• Apply the parking brake.
2 READY Indicator P. 80
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uuIndicators uMulti-Information Display Warn ing and Information Messages
Instrument Panel
MessageConditionExplanation
•If you are providing little or no steering input, the 
indicator blinks and a beeper sounds.•Operate the steering wheel to resume the LKAS.
•Appears when the LKAS is in operation, or the LKAS 
button is pressed, but there is a problem with a system 
related to the LKAS. The LK AS cancels automatically 
and a beeper sounds.
u Traffic jam assist also canc els if it is experiencing a 
problem.• If any other system indicators come on, such as the 
VSA ®, ABS and brake system, take appropriate action.
2Indicators  P. 76
•Appears when you unlock and open the driver’s door 
while the power system is on by two-way keyless access 
remote.
2 Remote Engine Start with Vehicle Feedback P. 380
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Instrument Panel
Gauges and Displays 
Gauges
Gauges include the speedometer, tachometer, fuel gauge, High Voltage battery 
charge level gauge, and related indicato rs. They are displayed when the power 
mode is set to ON.
Displays your driving speed in mph or km/h.
Shows the number of engine revolutions per minute.
Displays the amount of fuel left in the fuel tank.
■Speedometer
■Tachometer
■Fuel Gauge1 Fuel Gauge
NOTICE
You should refuel when the needle approaches  .
Running out of fuel can cause  the engine to misfire, 
damaging the cata lytic converter.
The actual amount of remain ing fuel may differ from 
the fuel gauge reading.E
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uuGauges and Displays uMulti-Information Display
Instrument Panel
Multi-Information Display
The multi-information display displays  the odometer, trip meter, outside 
temperature, and other gauges. It also displays important messages such as 
warnings and other helpful information.
■Main displays
Roll the right selector wheel to change the display.
■Switching the Display
Right Selector Wheel Engine Oil LifeElapsed Time
Blank Screen
Average Speed
Range
Instant Fuel 
Economy/Average 
Fuel Economy
Compass
Tire Pressure for 
Each Tire Current Mode for 
ACC with Low Speed 
Follow, the LKAS, 
and Traffic Jam 
Assist
Head-up Display 
Content This message shows 
when ACC with Low 
Speed Follow, the 
LKAS, and Traffic 
Jam Assist are off.
Turn-by-Turn 
Directions
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