2023 Mercedes-Benz GLS Problems, Recalls & Complaints
NHTSA recall campaigns and owner complaints for the 2023 Mercedes-Benz GLS, and what to keep if your vehicle keeps going back to the shop.
Recall campaigns
5
NHTSA owner complaints as of November 6, 2026, from NHTSA's complaint data files.
10
Data last refreshed (Eastern time)
November 6, 2026
NHTSA lists 5 recall campaigns for the 2023 GLS and 10 owner complaints; the most-reported component in owner complaints is service brakes, with 4 reports.
Counts come from NHTSA records for this model year and refresh daily. Complaints are unverified owner reports; one complaint can name more than one component.
Top Reported Problems
Owner complaints grouped by NHTSA component (top 8). Linked components open a page comparing models for that problem.
- UNKNOWN OR OTHER2
- ELECTRICAL SYSTEM2
- FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING2
- WHEELS1
- FUEL/PROPULSION SYSTEM1
- POWER TRAIN1
2023 GLS Recall Records
Campaigns can apply only to specific configurations and production dates. Confirm whether your VIN is affected with NHTSA or the manufacturer.
ELECTRICAL SYSTEM:WIRING · 24V207000
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 GLE 350, 2020-2024 GLE 450, 2020-2023 GLS 580, GLE 580, 2019-2023 GLS 450, 2021-2023 Maybach GLS 600, AMG GLS 63, 2021-2024 AMG GLE 53, AMG GLE 53 Coupe, and AMG GLE 63 S vehicles. A 48-Volt ground connection under the passenger seat may not be secured properly, resulting in the ground connection overheating.
Remedy: Dealers will inspect and tighten the 48-Volt ground connection as necessary, free of charge. Owner notification letters were mailed on May 3, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024040002.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE · 24V118000
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2023 GLE 450 and GLS 450 vehicles. The transmission may not fully downshift in certain conditions, causing the engine to stall.
Remedy: Dealers will update the transmission control unit software, free of charge. Owner notification letters were mailed March 29, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP · 23V880000
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, causing a loss of drive power.
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 28, 2024. Owner notification letters will be mailed in phases, on February 23, 2024, April 19, 2024, June 28, 2024, August 9, 2024, October 1, 2024, and December 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 23V-445.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP · 23V445000
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.
STRUCTURE:BODY · 23V178000
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2023 GLE350, GLE450, GLE580, GLS450, GLS580, Maybach GLS600, AMG GLE53, AMG GLE63 S, and AMG GLS63 vehicles. The rear door window trim bars may detach from the vehicle while driving.
Remedy: Dealers will inspect and secure the rear window trim bars, as necessary, free of charge. Owner notification letters were mailed May 5, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of previous recall number 22V-680. MBUSA's number for this recall is 2023040011.
2023 GLS Service Bulletins
A service bulletin is a manufacturer's repair instruction to dealers. It is not a recall and does not by itself establish a defect or a claim.
Manufacturer communications filed with NHTSA for this model year, newest first. A bulletin may apply only to certain configurations. Source data refreshes daily.
| Number | Date | Component | Summary | NHTSA record |
|---|---|---|---|---|
| LI09.00-P-081076 | Oct 28, 2026 | ENGINE | Complaint Customers may notice a check engine light in the instrument cluster and may also complain of rough running. One or more of the following DTCs may be stored in the ME c… | 11039096 |
| LI83.30-P-077763 | Oct 21, 2026 | VISIBILITY/WIPER | Complaint Customer concern of Air Conditioning not cooling. *NOTE ‑ Use of tracer DYE for leak checks is not approved. Only approved leak check procedures as per WIS are appro… | 11039062 |
| LI20.00-P-080222 | Oct 19, 2026 | ENGINE | Complaint Customer states that the yellow "Coolant" message is populated in the instrument cluster. The following DTC is found stored in the PTCU: P2B2A7A ‑ The speed of the '… | 11038922 |
| OTA- Comm. Mod. SW Upd. | Oct 9, 2026 | ELECTRICAL SYSTEM | Issue A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in… | 11038909 |
| LI46.10-P-080896 | Sep 26, 2026 | STEERING | Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the slee… | 11038188 |
| LI27.00-P-073124 | Sep 26, 2026 | POWER TRAIN | Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G‑TRONIC automatic transmis… | 11038187 |
| LI18.00-P-073137 | Sep 26, 2026 | ENGINE | Complaint Sporadic warning message in instrument cluster "Engine oil pressure, stop switch off vehicle" (or similar) is shown in red on vehicles with low mileage. Cause Directio… | 11038185 |
| LI42.10-P-078779 | Sep 22, 2026 | SERVICE BRAKES | Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticea… | 11038186 |
| PSL-NCU Return Parts 9/18 | Sep 18, 2026 | VISIBILITY/WIPER, STRUCTURE:BODY, POWER TRAIN, SUSPENSION | Dear Dealer Partners, The part numbers listed in the chart below should no longer be installed and any existing stock must be returned to your facing PDC. The deadline for all d… | 11037379 |
| LI20.10-P-075374 | Sep 17, 2026 | ENGINE | Complaint Red coolant warning in instrument cluster. Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for faul… | 11038176 |
| LI82.60-P-080383 | Sep 15, 2026 | ELECTRICAL SYSTEM | Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a… | 11038174 |
| LI82.62-P-078631 | Sep 14, 2026 | STRUCTURE:BODY | Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise c… | 11038217 |
| LI27.10-P-075869 | Sep 14, 2026 | POWER TRAIN | Complaint Only vehicles with a variable transfer case are affected. This can be identified through control unit N45 or N15/7 in the quick test. When accelerating with light load… | 11037987 |
| LI35.31-P-080353 | Sep 14, 2026 | POWER TRAIN | Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area during cornering. (figure 1) On the above‑mentioned vehicles with a… | 11037834 |
| NCU - 2026090001 | Sep 11, 2026 | ELECTRICAL SYSTEM | Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the control unit software for the front signal acquisition and act… | 11038224 |
| LI54.71-P-079104 | Sep 11, 2026 | ELECTRICAL SYSTEM | Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without… | 11037806 |
| LI54.21-P-080326 | Sep 9, 2026 | ELECTRICAL SYSTEM | Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 2… | 11037732 |
| LI27.00-P-073124 | Sep 4, 2026 | POWER TRAIN | Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G‑TRONIC automatic transmi… | 11037616 |
| LI83.30-P-077763 | Sep 2, 2026 | VISIBILITY/WIPER | Complaint Customer concern of Air Conditioning not cooling. *NOTE ‑ Use of tracer DYE for leak checks is not approved. Only approved leak check procedures as per WIS are appro… | 11037736 |
| LI83.55-P-080937 | Sep 1, 2026 | VISIBILITY/WIPER | Cause Internal failure of the scroll wheel within the AC compressor. Remedy Check the compressor's index and part number Figure 1 against Table 1. If listed please perform the f… | 11037243 |
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Build Your GLS Repair File
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