2020 Acura RLX Service and Repair Manual

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Factory-Grade Data

The 2020 Acura RLX service and repair manual is a practical, OEM-style reference for maintenance, diagnostics, and repair work. You’ll get step-by-step procedures, specifications, torque values, diagrams, and system information to help you troubleshoot accurately and finish jobs faster.

Ideal for professional technicians and DIY owners, this manual covers core vehicle systems including engine, brakes, steering, suspension, HVAC, and wiring diagrams. Instant digital access after purchase.

Trims covered

  • Base Sedan 4-Door
  • Sport Hybrid SH-AWD Sedan 4-Door

Engines covered

  • 3.5L 3471CC V6 GAS SOHC Naturally Aspirated
  • 3.5L 3471CC V6 FULL HYBRID EV-GAS (FHEV) SOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Body Repair
  • Body Repair Basic
  • Brakes
  • Control System DTCs
  • Driving Support & Restraints
  • Engine
  • HVAC
  • Network Communication
  • Paint Repair Basic
  • Steering
  • Suspension
  • Symptom
  • Trans/Driveline
  • Vehicle General Information
  • Wiring Diagrams

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Vehicle Safety Data

2020 Acura RLX Recalls & Complaints

NHTSA #23V85800018/12/2023Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX,

Consequence

Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy

Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2

TSB #11000147

Service News - Due to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Hondas Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor

TSB #10213569

American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RLXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fue

TSB #10203504

ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating

TSB #10202602

ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating

TSB #10174706

"Service bulletin - The malfunction indicator lamp (MIL) comes on with DTC P0460 (fuel level sensor [fuel gauge sending unit] out of range). Under certain conditions, the PCM software may misinterpret normal fuel level sensor inputs as a ma

TSB #10173192

ServiceNews Article - This article replaces "Don't Worry About the Brown Dust on the Wheels," posted in December 2017. On some arriving vehicles, are you seeing brown dust covering the wheels? Don't worry; it's completely normal.

TSB #10171748

Service Bulletin - There is a high-pitched sound from the speakers while on a Bluetooth HandsFreeLink (HFL) call.

TSB #10171548

Service Bulletin - There is a high-pitched sound from the speakers while on a Bluetooth HandsFreeLink (HFL) call.

Showing the 8 most recent of 10 technical service bulletins on file with NHTSA.

20260403Component: STEERING

The contact owns a 2020 Acura RLX. The contact stated that while driving at an undisclosed speed, the steering wheel seized with several unknown warning lights illuminated. The contact stated that the

20260311Component: VEHICLE SPEED CONTROL:THROTTLE

On my 2020 Acura RLX hybrid: On the same day, once in a parking lot and once on a side drive, traveling at less than 15mph but more than 5mph, the car suddenly accelerated upon which I slowed the ca

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