2024 Subaru Ascent Service and Repair Manual

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Covers all 2024 Ascent trims — Premium Sport Utility 4-Door, Onyx Edition Sport Utility 4-Door, Limited Sport Utility 4-Door +5 more ·
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2024 Subaru Ascent 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 and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Premium Sport Utility 4-Door
  • Onyx Edition Sport Utility 4-Door
  • Limited Sport Utility 4-Door
  • Convenience Sport Utility 4-Door
  • Touring Sport Utility 4-Door
  • Premier Sport Utility 4-Door
  • Onyx Edition Limited Sport Utility 4-Door
  • Base Sport Utility 4-Door

Engines covered

  • 2.4L 2387CC 146Cu. In. H4 GAS DOHC Turbocharged

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
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
No active recalls The 2024 Subaru Ascent has no recalls on file with NHTSA.
TSB #11033077

This Bulletin announces a correction to the diagnostic procedures for certain CVT related DTCs, including P0730, P0746, P0747, P0841, P0846, P0867, P1867, P1894, and P2723.

TSB #11033069

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

TSB #11033065

This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).

TSB #11033061

This bulletin announces a design change to the TR690 CVT control valve body which features an enhanced line pressure sensor O-ring, designed to prevent abnormal sensor readings caused by O-ring leakage.

TSB #11033056

This announcement provides information on the remanufactured CVT transmission program.

TSB #11033051

This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).

TSB #11032039

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

TSB #11032035

This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.

Showing the 8 most recent of 188 technical service bulletins on file with NHTSA.

20251110Component: BACK OVER PREVENTION: WARNINGSCrash reported

When driving below 5 mph—forward or reverse—with the rear passenger door fully open, the only alert is a small “door ajar” icon on the dash. This icon is the same drawing, whether the door is

20251110Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKINGCrash reported

When driving below 5 mph—forward or reverse—with the rear passenger door fully open, the only alert is a small “door ajar” icon on the dash. This icon is the same drawing, whether the door is

20251110Component: UNKNOWN OR OTHERCrash reported

When driving below 5 mph—forward or reverse—with the rear passenger door fully open, the only alert is a small “door ajar” icon on the dash. This icon is the same drawing, whether the door is

20240819Component: AIR BAGSCrash reported

Eye sight freezing when car purchased brand new. I was told that this was a known Issue. Radio freezing and then resuming at blaring volume, I was told that this was a known issue and Subaru was waiti

20240819Component: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROLCrash reported

Eye sight freezing when car purchased brand new. I was told that this was a known Issue. Radio freezing and then resuming at blaring volume, I was told that this was a known issue and Subaru was waiti

Showing the 5 most serious of 59 complaints filed with NHTSA.

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