2019 Subaru Ascent Service and Repair Manual
2019 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
- Limited Sport Utility 4-Door
- Convenience Sport Utility 4-Door
- Touring Sport Utility 4-Door
- Premier 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
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump insid
Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Dealers will replace the low-pressure fuel pump, free of charge. Owner notification letters were ma
Subaru of America, Inc. (Subaru) is recalling certain 2019 Impreza, Outback, Legacy, and Ascent vehicles. The low pressure fuel pump may become inoperative.
If the low pressure fuel pump fails, the engine may stall without the ability to restart the vehicle
Subaru will notify owners, and dealers will replace the low pressure fuel pump, free of charge. The
Subaru of America, Inc. (Subaru) is recalling certain 2019 Ascent vehicles. The center support bolts for the driveshaft may loosen, possibly resulting in the front portion of the driveshaft disconnec
If the front end of the driveshaft separates, it can increase the risk of a crash.
Subaru will notify owners, and dealers will replace the driveshaft assembly, including the center su
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage bef
An improperly secured drive chain may slip and break, causing a loss of drive power and increasing t
Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guid
Subaru of America, Inc. (Subaru) is recalling certain 2019-2022 Ascent vehicles. The ground bolt that secures the ground terminal of the Positive Temperature Coefficient (PTC) heater may have been im
A melting ground terminal increases the risk of a fire.
Owners are advised to park their vehicle away from structures and to avoid leaving the vehicle unatt
Subaru of America, Inc. (Subaru) is recalling certain 2019 Ascent vehicles. The transmission hydraulic sensor may inaccurately measure the hydraulic fluid pressure.
If the fluid pressure is measured higher than its actual value, the hydraulic pressure will be reduc
Subaru will notify owners, and dealers will reprogram the transmission control unit. The hydraulic
Subaru of America, Inc. (Subaru) is recalling certain 2019 Crosstrek, Forester, and Ascent vehicles. The aluminum Positive Crankcase Ventilation (PCV) valve can separate, allowing the separated compo
An unexpected loss of power while driving can increase the risk of a crash.
Subaru will notify owners, and dealers will inspect and replace the PCV valve, free of charge. If t
Subaru of America, Inc. (Subaru) is recalling certain 2019 Subaru Ascent vehicles. These vehicles may be missing spot welds on, or around, the B-Pillar, compromising vehicle strength.
In the event of a crash, the missing spot welds may compromise the vehicle's strength, increasing th
Subaru will notify owners, and dealers will inspect the vehicle to check for missing spot welds. If
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.
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
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).
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.
This announcement provides information on the remanufactured CVT transmission program.
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).
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Powertrain Warranty coverage for the Continuously Variable Transmission (CVT) on the above listed models and model years from the origi
Showing the 8 most recent of 503 technical service bulletins on file with NHTSA.
The contact owns a 2019 Subaru Ascent. The contact stated that while his wife was driving at approximately 75 MPH, a deer ran across the highway and hit the left driver's side of the vehicle. The air
The contact owns a 2019 Subaru Ascent. The contact stated that while his wife was driving at approximately 75 MPH, a deer ran across the highway and hit the left driver's side of the vehicle. The air
TRAVELING ON HIGHWAY AT 70 MPH WHEN A DEER JUMPED IN FRONT OF OUR CAR AND WE HIT IT WITH THE FRONT END OF THE VEHICLE CRUSHING THE FRONT END. ALL AIR BAGS IMMEDIATELY DEPLOYED AND THE FRONT END BEGAN
TRAVELING ON HIGHWAY AT 70 MPH WHEN A DEER JUMPED IN FRONT OF OUR CAR AND WE HIT IT WITH THE FRONT END OF THE VEHICLE CRUSHING THE FRONT END. ALL AIR BAGS IMMEDIATELY DEPLOYED AND THE FRONT END BEGAN
TRAVELING ON HIGHWAY AT 70 MPH WHEN A DEER JUMPED IN FRONT OF OUR CAR AND WE HIT IT WITH THE FRONT END OF THE VEHICLE CRUSHING THE FRONT END. ALL AIR BAGS IMMEDIATELY DEPLOYED AND THE FRONT END BEGAN
Showing the 5 most serious of 545 complaints filed with NHTSA.
