Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. Subaru
  6. /
  7. Ascent
Subaru · Known Issues

2024 Subaru Ascent Problems: 6 Known Issues

2024 model year · 3,170+ owner reports · Updated September 2026

Share:@au7o.io

2024 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo
No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$4.99/month plus taxes at launch · No payment today

Preview the XT6 example
Issue summary

According to Au7o's analysis of 3,170+ owner reports, the 2024 Subaru Ascent has 6 documented known issues, with 3 rated critical. The most serious are CVT Transmission Hesitation and Harsh Engagement ($0-$9,000 repair), CVT Valve Body Failure and Transmission Warning ($1,500-$8,500 repair) and EyeSight Pre-Collision Braking Activates With No Obstacle (Phantom Braking) ($0-$400 repair). The most commonly reported issue is CVT Transmission Hesitation and Harsh Engagement with 1,300 owner reports. Across all issues with published estimates, repair costs range from $150 to $9,000. DIY maintenance guides at au7o.io.

In This Article

  • Ascent Transmission2
  • Ascent Brakes1
  • Ascent Body/Panels1
  • Ascent Electrical1
  • Ascent Safety/Recalls1
  • Recalls5
  • FAQ
Get Started
Back to top

In This Article

  • Transmission2
  • Brakes1
  • Body/Panels1
  • Electrical1
Safety/Recalls
1
  • Recalls5
  • FAQ

    • All 6 Known Issues

    Filter:
    ALL YEARS20262025202420232022202120202019
    Community reported
    1,300 owners

    On the 2019-2025 Subaru Ascent FA24, the Ascent's high-torque Lineartronic CVT (TR730 - the largest CVT Subaru has produced) paired with the 2.4L turbo FA24 engine exhibits hesitation from stops, harsh engagement when shifting from Park to Drive/Reverse, and surging at low speeds. The TR730 CVT must handle significantly more torque than Subaru's other CVTs, leading to durability concerns. Multiple TSBs have addressed calibration issues. Some owners report complete CVT failure under 60,000 miles.

    This issue also affects: Subaru BRZ, Subaru Crosstrek, Subaru Forester

    Common Symptoms

    • 1-2 second hesitation when accelerating from a stop
    • Harsh thunk when shifting from Park to Drive or Reverse
    • Surging or bucking at low speeds in parking lots
    • Shuddering during light acceleration at 25-40 mph
    • Transmission warning light
    • Burning smell from transmission area

    How to Fix

    Have dealer apply latest TCM software calibration (multiple TSBs released). Perform CVT fluid drain and refill with Subaru High Torque CVT Fluid (SOA427V1660) - note this is different from the standard CVT fluid. If hesitation persists after software update, valve body replacement may be needed. For complete failure, Subaru reman CVT is available. All Ascents have 10-year/100,000-mile CVT warranty from factory.

    Typical repair cost:$0 - $9,000

    Research This Issue

    Based on 1,300 owner reports

    GoogleRedditYouTubeNHTSA
    Community Reported
    High Confidence1,300 owner reportsLast reported by owners Feb 2026Reviewed Feb 2026

    On the 2019-2024 Subaru Ascent, the Ascent's TR730 high-torque CVT develops valve body failures that cause erratic shifting, harsh engagement, and transmission warning lights. The valve body controls hydraulic pressure to the CVT pulleys and chain, and when solenoids or passages within it fail, the transmission cannot maintain proper ratio control. This issue is distinct from the CVT hesitation TSB and represents a hardware failure rather than a calibration issue.

    This issue also affects: Subaru Crosstrek, Subaru Forester, Subaru Impreza

    Common Symptoms

    • Transmission warning light illuminated
    • Harsh thud when shifting from Park to Drive
    • CVT slipping or flaring RPMs under load
    • Shuddering at highway speeds
    • Vehicle going into limp mode (limited to low speeds)
    • Burning fluid smell

    How to Fix

    Diagnose with dealer scan tool to confirm valve body solenoid fault codes. Valve body replacement resolves the issue in most cases — this is a less expensive repair than full CVT replacement. If the CVT has been operated with a failed valve body for an extended period, internal damage may necessitate full CVT replacement. Covered under Subaru's 10-year/100,000-mile CVT warranty.

    Typical repair cost:$1,500 - $8,500

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    Medium Confidence

    On the 2023-2026 Subaru Ascent FA24F, owners of later Ascents report the EyeSight automatic emergency braking system applying the hydraulic brakes hard with no driver input and no obstacle present - on open highway, mid-turn, and while taking a curve. A proposed class action filed May 11, 2026 in the U.S. District Court for the District of New Jersey names the 2023-2026 Ascent alongside 2023-2026 Legacy and Outback, 2024-2026 Impreza and Crosstrek, 2022-2026 Forester and WRX, and 2025-2026 BRZ, and cites more than 25 NHTSA consumer complaints across the affected vehicles. The complaint alleges the system misreads ordinary road conditions - and sometimes entirely clear road - as an imminent collision and brakes unnecessarily early and with unnecessary force. The alleged mechanism is miscommunication among the ABS control module, transmission control module, engine control module and Vehicle Dynamic Control module, which commands unwanted brake application. Note: the litigation is pending and there is no NHTSA recall for this on the Ascent as of this writing.

    Common Symptoms

    • Vehicle brakes hard with no obstacle present
    • Sudden deceleration at highway speed
    • Braking triggered mid-turn or on a curve
    • EyeSight warning chime and dash alert with nothing ahead
    • Risk of being rear-ended

    How to Fix

    No recall remedy exists. Report every event to NHTSA at nhtsa.gov/report-a-safety-problem with date, speed and road conditions - complaint volume is what drives an investigation. At the dealer, ask for the latest EyeSight and VDC/ABS software levels to be applied, and have the windshield-mounted stereo camera checked for calibration, especially after any windshield replacement (a very common Ascent repair given the separate windshield-cracking issue) - a miscalibrated camera after glass replacement is a known independent cause of false activations. EyeSight pre-collision braking can be temporarily switched off via the dashboard control if the behavior becomes unsafe, though it re-enables at the next ignition cycle.

    Typical repair cost:$0 - $400

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Aug 2026
    Community reported
    980 owners

    On the 2019-2025 Subaru Ascent, the Ascent has one of the highest rates of windshield cracking complaints of any Subaru model. Cracks frequently originate near the EyeSight camera housing or from windshield edges without any rock impact. The large windshield, acoustic lamination, steep rake angle, and EyeSight system create stress points. Temperature fluctuations (cold nights followed by morning defrost) are a common trigger. Replacement windshields must be EyeSight-compatible and require camera recalibration ($200-400 additional). Some owners have reported 3-4 windshield replacements.

    Common Symptoms

    • Crack appearing near EyeSight camera area without impact
    • Edge crack spreading across windshield rapidly
    • Crack developing overnight during temperature swings
    • EyeSight system shutting down due to windshield crack
    • Multiple windshield replacements needed

    How to Fix

    Contact Subaru of America customer service (1-800-782-2783) to request goodwill windshield replacement. Document crack origin with photos before it spreads. Use an EyeSight-compatible replacement windshield (Subaru OEM 65009XC04A or Pilkington-branded EyeSight glass). EyeSight recalibration at dealer is mandatory after replacement ($200-400). Some insurance policies cover windshield replacement with zero deductible.

    Typical repair cost:$600 - $1,800

    Research This Issue

    Based on 980 owner reports

    GoogleRedditYouTubeNHTSA
    Community Reported
    High Confidence980 owner reportsLast reported by owners Feb 2026Reviewed Feb 2026
    Community reported
    890 owners

    On the 2019-2024 Subaru Ascent, ascents commonly experience dead batteries after sitting for 3-5 days without driving. The numerous electronic modules (Starlink telematics, EyeSight, keyless access, remote start receiver) create a high parasitic draw that depletes the battery when the vehicle is not driven regularly. The factory battery (Group 25, 570 CCA) is undersized for the electrical demands. Cold weather significantly worsens the issue. Subaru released TSB 11-193-20 to update module sleep behavior but the issue persists for many owners.

    Common Symptoms

    • Dead battery after sitting 3-5 days
    • Slow engine cranking
    • Electrical accessories not functioning when starting
    • Key fob not detected by push-button start
    • Clock and radio presets resetting
    • Battery warning light after short drives

    How to Fix

    Install a higher-capacity battery (Group 25 with 640+ CCA - Interstate MTP-25 or Optima 8025-160 recommended). Have dealer apply TSB 11-193-20 module sleep timer update. If vehicle sits frequently, use a Battery Tender Junior (1.25A) connected to maintain charge. Check parasitic draw with multimeter - should be under 50mA after all modules sleep (30+ minutes). Disable Starlink telematics if not using connected services.

    What you need to diagnose it

    The fix here starts with a test, not a part — which repair you need depends on what the test finds.

    • UNI-T UT210E Low-Current DC Clamp Meter

      1 mA resolution on the 2 A range — a 0.1 A meter reads a 50 mA drain as zero

      $40–$70View

    As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.

    Testing and isolating the fault is DIY work. Replacing or reprogramming a control module is not — most are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Genuine Subaru SOA821B900B B900 higher-capacity replacement battery

      The battery may require the bulletin-specified tray, rod and cover; confirm all current supersessions before purchase.

      SubaruPartsDeal

    As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

    Typical repair cost:$150 - $400

    Research This Issue

    Based on 890 owner reports

    GoogleRedditYouTubeNHTSA
    Community Reported
    High Confidence890 owner reportsLast reported by owners Feb 2026Reviewed Feb 2026

    On the 2019-2026 Subaru Ascent, subaru is recalling roughly 541,000 vehicles, including every 2019-2026 Ascent, because the federally required certification label on the driver's door jamb carries an incorrect Gross Axle Weight Rating. Owners who load the vehicle to the number printed on the label - a real scenario on a three-row family SUV carrying seven or eight occupants plus cargo, or towing near the 5,000 lb limit - can exceed the true axle capacity, which degrades braking, steering and tire load margin and increases crash risk. This is a documentation defect rather than a mechanical failure, but it affects the entire production run of the model.

    Common Symptoms

    • No driveable symptom - incorrect axle weight rating printed on the door-jamb certification label
    • Risk of unknowingly overloading an axle when fully loaded or towing

    How to Fix

    Free remedy under NHTSA campaign 26V436: Subaru mails owners a corrected overlay label with self-installation instructions, or a dealer will apply it at no charge. Owner letters were scheduled to be mailed August 25, 2026. Until the corrected label is applied, use the tow and payload figures from the current owner's manual rather than the door-jamb sticker, and check the VIN at nhtsa.gov/recalls. Subaru customer service: 1-844-373-6614.

    Typical repair cost:$0 - $0

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Aug 2026
    NHTSA Recalls5 recalls

    EQUIPMENT:OTHER:LABELS

    Subaru of America, Inc. (Subaru) is recalling certain 2026 Crosstrek Hybrid, 2025-2026 Forester Hybrid, Forester, and 2019-2026 Ascent vehicles. These vehicles were manufactured with an incorrect Gross Axle Weight Rating (GAWR) on the certification label. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 110, "Tire selection and rims."

    Campaign #26V43600007/07/2026

    TIRES

    Subaru of America, Inc. (Subaru) is recalling certain 2023 Ascent vehicles equipped with 20-inch wheels. The internal tire bead may have been damaged during the wheel mounting process.

    Campaign #23V25800007/04/2023

    SUSPENSION:FRONT:CONTROL ARM:LOWER ARM

    Subaru of America, Inc. (Subaru) is recalling certain 2023 Ascent vehicles. The left or right front lower control arm may have an improperly tightened ball joint castle nut which can result in retention pin failure and separation of the ball joint from the lower control arm.

    Campaign #23V39200001/06/2023

    POWER TRAIN:DRIVELINE:DRIVESHAFT

    Subaru of America, Inc. (Subaru) is recalling certain 2023 Outback, Legacy, Ascent, and Impreza vehicles. The center support bolts for the driveshaft may loosen, resulting in the disconnection of the front end of the driveshaft.

    Campaign #23V64700021/09/2023

    ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH

    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 improperly fastened, which could result in melting of the ground terminal and surrounding components.

    Campaign #22V90700008/12/2022

    Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

    🔧
    A mechanic who knows YOUR exact car
    Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
    Get ahead of Subaru Ascent problems — free
    Leave your email and we'll alert you the moment there's a new recall or known issue for your Subaru Ascent. Free, no account needed.

    Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

    Other Subaru Models

    Subaru Forester46Subaru Outback40Subaru WRX31Subaru Solterra24Subaru Crosstrek23Subaru Legacy18

    Frequently Asked Questions

    What are the most common Subaru Ascent problems?

    According to Au7o's analysis of 3,170+ owner reports, the 2024 Subaru Ascent has 6 documented issues. The most frequently reported are: CVT Transmission Hesitation and Harsh Engagement, CVT Valve Body Failure and Transmission Warning, EyeSight Pre-Collision Braking Activates With No Obstacle (Phantom Braking). Of these, 3 are rated critical and should be addressed promptly.

    Is the Subaru Ascent reliable?

    The 2024 Subaru Ascent has 6 known issues documented across 3,170+ owner reports. 3 issues are rated critical: CVT Transmission Hesitation and Harsh Engagement and CVT Valve Body Failure and Transmission Warning and EyeSight Pre-Collision Braking Activates With No Obstacle (Phantom Braking). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

    How much does it cost to fix common Subaru Ascent problems?

    Repair costs for known Subaru Ascent issues range from $0 to $9,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, CVT Transmission Hesitation and Harsh Engagement, typically costs $0-$9,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

    What is the 2019-2025 Subaru Ascent CVT Transmission Hesitation and Harsh Engagement?

    The Ascent's high-torque Lineartronic CVT (TR730 - the largest CVT Subaru has produced) paired with the 2.4L turbo FA24 engine exhibits hesitation from stops, harsh engagement when shifting from Park to Drive/Reverse, and surging at low speeds. The TR730 CVT must handle significa… Repairs typically run $0-$9,000. Severity: high.

    What is the 2019-2024 Subaru Ascent CVT Valve Body Failure and Transmission Warning?

    The Ascent's TR730 high-torque CVT develops valve body failures that cause erratic shifting, harsh engagement, and transmission warning lights. The valve body controls hydraulic pressure to the CVT pulleys and chain, and when solenoids or passages within it fail, the transmission… Repairs typically run $1,500-$8,500. Severity: high.

    What is the 2023-2026 Subaru Ascent EyeSight Pre-Collision Braking Activates With No Obstacle (Phantom Braking)?

    Owners of later Ascents report the EyeSight automatic emergency braking system applying the hydraulic brakes hard with no driver input and no obstacle present - on open highway, mid-turn, and while taking a curve. A proposed class action filed May 11, 2026 in the U.S. District Co… Repairs typically run $0-$400. Severity: high.

    What is the 2019-2025 Subaru Ascent Windshield Spontaneous Cracking?

    The Ascent has one of the highest rates of windshield cracking complaints of any Subaru model. Cracks frequently originate near the EyeSight camera housing or from windshield edges without any rock impact. The large windshield, acoustic lamination, steep rake angle, and EyeSight… Repairs typically run $600-$1,800. Severity: medium.

    What is the 2019-2024 Subaru Ascent Parasitic Battery Drain - Dead Battery After Sitting?

    Ascents commonly experience dead batteries after sitting for 3-5 days without driving. The numerous electronic modules (Starlink telematics, EyeSight, keyless access, remote start receiver) create a high parasitic draw that depletes the battery when the vehicle is not driven regu… Repairs typically run $150-$400. Severity: medium.

    What is the 2019-2026 Subaru Ascent Incorrect Gross Axle Weight Rating on Certification Label (Recall 26V436)?

    Subaru is recalling roughly 541,000 vehicles, including every 2019-2026 Ascent, because the federally required certification label on the driver's door jamb carries an incorrect Gross Axle Weight Rating. Owners who load the vehicle to the number printed on the label - a real scen… Repairs typically run $0-$0. Severity: low.

    Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

    Data sourced from 3,170+ owner reports, NHTSA recalls, TSBs, and automotive forums.