2024 Lexus GX 550 Service and Repair Manual

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Covers all 2024 GX 550 trims — Luxury, Luxury+, Overtrail +3 more ·
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2024 Lexus GX 550 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications, torque values, and reference data
  • Electrical diagnostics with full wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
  • Diagnostic trouble codes and troubleshooting flow
  • Maintenance schedules and fluid capacities

Trims covered

  • Luxury
  • Luxury+
  • Overtrail
  • Overtrail+
  • Premium
  • Premium+

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Maintenance & Lubrication
  • Specifications
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Diagnostic Trouble Codes
  • Technical Service Bulletins
  • Wiring Diagrams
No active recalls The 2024 Lexus GX 550 has no recalls on file with NHTSA.
No service bulletins No technical service bulletins on file with NHTSA for the 2024 Lexus GX 550.
07/11/20Component: AIR BAGSCrash reported1 injured

The airbags didn’t deploy in a collision that included the front and rear. My head and body was smashed into the steering wheel and dash. There were no warning that there may be a problem with this system. We have not had an inspection yet but are hiring an investigator for that purpose.

06/04/20Component: VISIBILITY/WIPER

The GX 550 has many people online complaining about the windshields cracking from the bottom for no reason. The crack is getting worse and close to line of sight. This is happening without something striking it.

06/03/20Component: ENGINE

My engine failed as I was driving down the highway at high speed. I was thankfully able to move over lanes and park safely on side of the rode before it came to a complete stop. It never turned back on. Lexus had to send a tow truck to pick it up and has been @ Dealership in Lubbock tx since 3/9/26

04/29/20Component: POWER TRAIN,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

On April 17, 2025, while driving a 2024 Lexus GX 550 Luxury Plus with a minor passenger in the vehicle, the vehicle locked up without warning as I was exiting the highway. The sudden lockup caused skid marks on the tires. The failure occurred at low speed only because I had just turned off the highway — had it occurred moments earlier at highway speed, the consequences could have been fatal. The failed component appears to be the drivetrain or braking/locking system. The vehicle is currently in the possession of the Lexus dealership and is available for inspection. A Lexus field inspector has

03/27/20Component: ELECTRICAL SYSTEM

My car was stolen via a can-bus attack - it was locked while it happened. The alarm was going off and they still stole the car. It took less than 3 minutes.

01/24/20Component: ENGINE

Rough idle

12/16/20Component: ELECTRICAL SYSTEM

The contact owns a 2024 Lexus GX 550. The contact stated that while operating the vehicle, the instrument cluster momentarily turned black. The vehicle was taken to the local dealer, where the failure could not be duplicated, and no service was performed. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 8,000.

11/07/20Component: ELECTRICAL SYSTEM,UNKNOWN OR OTHER

I have a 2024 Lexus GX 550 Overtrail with about 4,500 miles on it bought in December 2024. I went to start it this afternoon and I got a message saying "Low Steering Power". All the electrical things on the car seemed to be working: lights, dash lit up, courtesy lights, all the screens, etc. It just wouldn't turn over. I shut the car off and gave it a minute or two then tried again. Nothing. At the same time, the car started to make a low, continuous humming sound and made a couple of clicking noises about every 10 seconds. It sounded like the hum of a refrigerator and seemed to be comi

Showing the 8 most serious of 17 complaints filed with NHTSA.

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