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Mercedes-Benz · Known Issues

2024 Mercedes-Benz GLC Problems: 8 Known Issues

2024 model year · 1,100+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 1,100+ owner reports, the 2024 Mercedes-Benz GLC has 8 documented known issues, with 6 rated critical. The most serious are Air Suspension Compressor Failure ($600-$2,000 repair), Steering Coupling Bolt Loosening / Loss of Steering Control (Recall), Driver Door Lock Micro-Switch Corrosion Preventing Auto-Park / Parking Brake Engagement (Rollaway Recall 26V481) ($0-$0 repair), Infotainment Control Unit Reset Blanking the Instrument Cluster While Driving (Recall 26V281) ($0-$0 repair), 12V Board-Net Parasitic Drain from Door Control Modules Leaving X254 GLC Stranded ($0-$600 repair) and Active Brake Assist and 360-Degree Camera False Activations (Phantom Braking) ($0-$1,500 repair). The most commonly reported issue is MBUX Infotainment System Freeze with 700 owner reports. Across all issues with published estimates, repair costs range from $600 to $2,200. DIY maintenance guides at au7o.io.

In This Article

  • GLC Electrical3
  • GLC Safety/Recalls2
  • GLC Suspension1
  • GLC Steering1
  • GLC Exterior1
  • FAQ
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In This Article

  • Electrical3
  • Safety/Recalls2
  • Suspension1
  • Steering1
  • Exterior1
  • FAQ
  • All 8 Known Issues

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    On the 2024-2026 Mercedes-Benz GLC, on MBUX-equipped X254 GLC models the infotainment control unit can perform an unintended software reset while the vehicle is in motion. Because the digital instrument cluster is driven through that unit, the reset takes the cluster down with it: speed, warning telltales and other driving-related indicators disappear for the duration of the restart. Mercedes converted what had been an over-the-air campaign into a formal U.S. safety recall in April 2026 covering roughly 144,049 vehicles across the C-Class (206), E-Class (214), CLE (236), SL (232), AMG GT (192) and the 254-series GLC. This is a hard cluster blackout, not the general MBUX freeze/lag complaint — the head unit resets and takes the primary driver display with it, which is why NHTSA treated it as a crash risk rather than a convenience defect.

    Common Symptoms

    • Instrument cluster goes blank while driving
    • Speedometer and warning lights disappear
    • Central display restarts on its own
    • Loss of navigation and media during a reset

    How to Fix

    Free safety recall — NHTSA campaign 26V281. Dealers install updated infotainment control unit software at no charge; roughly 62% of the affected population had already received the fix over the air before the recall was filed, so many owners are already remedied and should confirm by VIN on nhtsa.gov. If the cluster goes blank while driving, pull over safely and cycle the ignition; do not continue driving without speed and warning indications.

    Typical repair cost:$0 - $0

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Aug 2026

    On the 2023-2025 Mercedes-Benz GLC, owners of the second-generation X254 GLC report the 12V system going flat after only a few days parked, with a "12V Battery Low" message and, in a number of cases, a no-start and a tow. This is separate from the 48V mild-hybrid starter-generator failure: here the 48V system is healthy and it is the conventional 12V board net being drained. Mercedes technicians and owners on the GLC forums traced the parasitic draw to the door control modules failing to go to sleep, and service centres have addressed it by reflashing all control units including the Door Control Module. Some owners were told by dealers to charge the battery every three days and drive at least 40 minutes daily — a workaround, not a fix — and several report being towed more than once before the module software was updated.

    Common Symptoms

    • "12V Battery Low" warning after a few days parked
    • No-start requiring a jump or a tow
    • Mercedes me app reports the battery as partially charged after a full drive
    • Random module faults and warning lights as voltage drops
    • Repeat flat battery after a new battery is fitted

    How to Fix

    Document the quiescent draw, update the implicated door and network modules, then capacity-test the AGM battery after repeated deep discharge. A replacement battery alone does not correct the parasitic drain and is not approved as the issue fix.

    Typical repair cost:$0 - $600

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    Medium ConfidenceVerifiedReviewed Aug 2026
    Community reported
    700 owners

    On the 2020-2025 Mercedes-Benz GLC, the MBUX infotainment system freezes, reboots, or displays a black screen. Bluetooth connections drop, Apple CarPlay/Android Auto disconnects randomly, and the voice assistant becomes unresponsive.

    This issue also affects: Mercedes-Benz EQB, Mercedes-Benz GLB, Mercedes-Benz GLE

    Common Symptoms

    • Touchscreen unresponsive to input
    • System reboots with Mercedes logo

    How to Fix

    Perform a system reboot by holding the volume and track-forward buttons for 10 seconds. Visit a dealer for the latest MBUX software update. If freezes persist, the head unit may need replacement.

    Find a Mercedes-Benz dealer

    Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.

    Open Mercedes-Benz dealer map in Google Maps ↗

    Call to confirm they service Mercedes-Benz vehicles and check your VIN, recall eligibility, parts availability, and appointment options.

    Owner tips & cautions

    • TipDisable wireless CarPlay and use a USB cable instead. Wireless connections cause more MBUX stability issues than wired.
    Typical repair cost:$0 - $2,000

    Research This Issue

    Based on 700 owner reports

    GoogleRedditYouTubeNHTSA
    Community Reported
    Medium Confidence700 owner reportsLast reported by owners Dec 2025Reviewed Mar 2026

    On the 2023-2024 Mercedes-Benz GLC, on the second-generation X254 GLC the micro-switch inside the driver's door lock tells the car whether the door is open. Its housing material is more permeable to moisture than intended, so the switch corrodes and stops reporting a door-open event. Because the Auto-Park function and the automatic engagement of the electronic parking brake are triggered by that door-open signal, the car can be left with no parking brake applied when the driver steps out — and roll away. Mercedes recalled 310,667 vehicles in July 2026 over this, including 2023-2024 GLC models. The root cause is the door lock, not the parking brake itself, which is why owners who complained of parking-brake behaviour were often told nothing was wrong.

    Common Symptoms

    • Vehicle rolls after the driver exits
    • Electronic parking brake does not engage automatically
    • Auto-Park function inoperative
    • Door-open warning not displayed when the driver's door is opened
    • Interior lights do not respond to the driver's door

    How to Fix

    Free safety recall — NHTSA campaign 26V481. Dealers replace the driver's door lock assembly at no cost; owner notification letters were scheduled for 18 September 2026 and VIN lookup on nhtsa.gov opened 31 July 2026. Until the remedy is done, engage the parking brake manually and confirm P is selected before leaving the vehicle, and do not rely on Auto-Park on a grade.

    Find a Mercedes-Benz dealer

    Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.

    Open Mercedes-Benz dealer map in Google Maps ↗

    Call to confirm they service Mercedes-Benz vehicles and check your VIN, recall eligibility, parts availability, and appointment options.

    Typical repair cost:$0 - $0

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Aug 2026

    On the 2017-2024 Mercedes-Benz GLC, gLC owners report the driver-assistance suite reacting to obstacles that are not there. The "checking surroundings" screen pops up several times a week with sections of the car outlined in red and nothing nearby, and — more seriously — Active Brake Assist has applied the brakes with no vehicle or object ahead. Owners on the Mercedes forums describe the system cutting the accelerator because it believes an obstacle is present, and multiple owners across the GLC and its C-Class platform siblings report the same event, encouraging one another to file NHTSA complaints. Mercedes has attributed comparable behaviour on other models to a software error in the radar sensor control unit, and the general failure mode is the radar or camera misreading a roadside object as a collision threat. An unexpected full-force brake application in traffic is a rear-end collision risk.

    Common Symptoms

    • Sudden hard braking with no vehicle or object ahead
    • "Checking surroundings" alert with red outlines and nothing nearby
    • Accelerator unresponsive during a false activation
    • Collision warning chime on an empty road
    • "Active Brake Assist functions limited" message

    How to Fix

    Read radar/camera event memory, install the current control-unit software and check sensor alignment/calibration, especially after glass or front-end work. No sensor or camera is approved until a specific failed component is established.

    Typical repair cost:$0 - $1,500

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    Medium ConfidenceVerifiedReviewed Aug 2026
    Community reported
    400 owners

    On the 2020-2025 Mercedes-Benz GLC, gLC models equipped with optional AIRMATIC air suspension experience premature compressor failure. The compressor overheats from compensating for minor air spring leaks and eventually burns out, leaving the vehicle in a lowered position.

    This issue also affects: Mercedes-Benz AMG GT 4-Door, Mercedes-Benz GL-Class, Mercedes-Benz GLE

    Common Symptoms

    • Vehicle sitting low after overnight parking
    • Suspension warning light on dashboard

    How to Fix

    Replace the air compressor and relay. Check all four air springs for slow leaks before installing a new compressor. The Arnott P-3508 is a reliable aftermarket alternative.

    What you need to fix it

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

    • Arnott P-3475 WABCO air-suspension compressor assembly
      OEMArnott P-3475

      Confirmed failed X253/C253 AIRMATIC compressor after leak and electrical/control diagnosis Fitment/availability: The inspected direct U.S.

      ECS Tuning

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

    Owner tips & cautions

    • TipListen for the compressor running after you park. If you hear it cycling repeatedly, you have an air leak that will kill the compressor. Get it inspected promptly.
    Typical repair cost:$600 - $2,000

    Research This Issue

    Based on 400 owner reports

    GoogleRedditYouTubeNHTSA
    Community Reported
    Medium Confidence400 owner reportsLast reported by owners Nov 2025Reviewed Mar 2026

    On the 2023-2026 Mercedes-Benz GLC, recall 25V533 directly covers model-year 2023-2026 GLC 300 and GLC 300 4MATIC vehicles whose steering-coupling bolt may not have been torqued to production specifications. The connection can loosen over time, potentially causing loss of steering control and increasing crash risk. The report lists 1,686 GLC 300 4MATIC and 677 GLC 300 vehicles; those are recall populations, not owner-report totals.

    Common Symptoms

    • VIN checked for recall 25V533
    • steering noise or looseness documented
    • recall rework completed by an authorized dealer

    How to Fix

    Check the VIN for recall 25V533 and have an authorized Mercedes-Benz dealer rework the steering-coupling bolt connection when eligible. Do not buy a bolt, nut, coupling or steering rack from this page; recall eligibility and the prescribed rework are VIN-specific.

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Aug 2026

    On the 2016-2024 Mercedes-Benz GLC, gLC headlamp assemblies collect water inside the lens. Mercedes recalled a narrow build window — 129 units of 2021 GLC 300, GLC 300 4MATIC, AMG GLC 43 and AMG GLC 63/63 S built May-June 2021 — because the sealing plugs in the headlamp connector housing were not properly installed, letting water reach the electrical connection and causing headlight failure. Beyond that recall population, owners across the X253 and X254 generations report heavy condensation inside LED headlights from compromised gaskets or blocked vent tubes, including new X254 cars fogging on one side, being replaced, and then fogging on the other. Dealers have handled non-recall cases by inserting silica gel desiccant bags under warranty, which owners describe as a temporary measure rather than a repair.

    Common Symptoms

    • Fog or visible water droplets inside the headlamp lens
    • One or both LED headlights inoperative
    • Condensation that clears slowly or not at all
    • Repeat condensation after a headlamp replacement

    How to Fix

    If the VIN falls in recall 22V261 (MBUSA campaign 2022050005), the dealer inspects and replaces the headlamp sealing plugs free of charge. Outside that population the correct diagnosis is to check the housing vent tubes for blockage and the rear cap and gasket seals for cracks or an improperly seated LED cover — silica bags treat the symptom only. Persistent water intrusion with an intact seal is grounds for a headlamp assembly replacement under the new-vehicle warranty; out of warranty a full LED unit is expensive, so pursue the claim while coverage lasts.

    Typical repair cost:$0 - $2,200

    Research This Issue

    GoogleRedditYouTubeNHTSA
    Community Reported
    High ConfidenceVerifiedReviewed Aug 2026
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    Frequently Asked Questions

    What are the most common Mercedes-Benz GLC problems?

    According to Au7o's analysis of 1,100+ owner reports, the 2024 Mercedes-Benz GLC has 8 documented issues. The most frequently reported are: Air Suspension Compressor Failure, Steering Coupling Bolt Loosening / Loss of Steering Control (Recall), Driver Door Lock Micro-Switch Corrosion Preventing Auto-Park / Parking Brake Engagement (Rollaway Recall 26V481). Of these, 6 are rated critical and should be addressed promptly.

    Is the Mercedes-Benz GLC reliable?

    The 2024 Mercedes-Benz GLC has 8 known issues documented across 1,100+ owner reports. 6 issues are rated critical: Air Suspension Compressor Failure and Steering Coupling Bolt Loosening / Loss of Steering Control (Recall) and Driver Door Lock Micro-Switch Corrosion Preventing Auto-Park / Parking Brake Engagement (Rollaway Recall 26V481) and Infotainment Control Unit Reset Blanking the Instrument Cluster While Driving (Recall 26V281) and 12V Board-Net Parasitic Drain from Door Control Modules Leaving X254 GLC Stranded and Active Brake Assist and 360-Degree Camera False Activations (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 Mercedes-Benz GLC problems?

    Repair costs for known Mercedes-Benz GLC issues range from $0 to $2,200, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Air Suspension Compressor Failure, typically costs $600-$2,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

    What is the 2020-2025 Mercedes-Benz GLC Air Suspension Compressor Failure?

    GLC models equipped with optional AIRMATIC air suspension experience premature compressor failure. The compressor overheats from compensating for minor air spring leaks and eventually burns out, leaving the vehicle in a lowered position. Repairs typically run $600-$2,000. Severity: high.

    What is the 2023-2026 Mercedes-Benz GLC Steering Coupling Bolt Loosening / Loss of Steering Control (Recall)?

    Recall 25V533 directly covers model-year 2023-2026 GLC 300 and GLC 300 4MATIC vehicles whose steering-coupling bolt may not have been torqued to production specifications. The connection can loosen over time, potentially causing loss of steering control and increasing crash risk. Severity: high.

    What is the 2023-2024 Mercedes-Benz GLC Driver Door Lock Micro-Switch Corrosion Preventing Auto-Park / Parking Brake Engagement (Rollaway Recall 26V481)?

    On the second-generation X254 GLC the micro-switch inside the driver's door lock tells the car whether the door is open. Its housing material is more permeable to moisture than intended, so the switch corrodes and stops reporting a door-open event. Because the Auto-Park function… Repairs typically run $0-$0. Severity: high.

    What is the 2024-2026 Mercedes-Benz GLC Infotainment Control Unit Reset Blanking the Instrument Cluster While Driving (Recall 26V281)?

    On MBUX-equipped X254 GLC models the infotainment control unit can perform an unintended software reset while the vehicle is in motion. Because the digital instrument cluster is driven through that unit, the reset takes the cluster down with it: speed, warning telltales and other… Repairs typically run $0-$0. Severity: high.

    What is the 2023-2025 Mercedes-Benz GLC 12V Board-Net Parasitic Drain from Door Control Modules Leaving X254 GLC Stranded?

    Owners of the second-generation X254 GLC report the 12V system going flat after only a few days parked, with a "12V Battery Low" message and, in a number of cases, a no-start and a tow. This is separate from the 48V mild-hybrid starter-generator failure: here the 48V system is he… Repairs typically run $0-$600. Severity: high.

    What is the 2017-2024 Mercedes-Benz GLC Active Brake Assist and 360-Degree Camera False Activations (Phantom Braking)?

    GLC owners report the driver-assistance suite reacting to obstacles that are not there. The "checking surroundings" screen pops up several times a week with sections of the car outlined in red and nothing nearby, and — more seriously — Active Brake Assist has applied the brakes w… Repairs typically run $0-$1,500. Severity: high.

    What is the 2016-2024 Mercedes-Benz GLC LED Headlamp Moisture Ingress and Internal Condensation (Recall 22V261 plus Out-of-Recall Complaints)?

    GLC headlamp assemblies collect water inside the lens. Mercedes recalled a narrow build window — 129 units of 2021 GLC 300, GLC 300 4MATIC, AMG GLC 43 and AMG GLC 63/63 S built May-June 2021 — because the sealing plugs in the headlamp connector housing were not properly installed… Repairs typically run $0-$2,200. Severity: medium.

    What is the 2020-2025 Mercedes-Benz GLC MBUX Infotainment System Freeze?

    The MBUX infotainment system freezes, reboots, or displays a black screen. Bluetooth connections drop, Apple CarPlay/Android Auto disconnects randomly, and the voice assistant becomes unresponsive. Repairs typically run $0-$2,000. 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 1,100+ owner reports, NHTSA recalls, TSBs, and automotive forums.