2021 Mercedes-benz Gls450 problems

General information about Mercedes-benz-Gls450
Overview of popular issues
Recalls list

The Mercedes-Benz GLS, formerly Mercedes-Benz GL-Class, is a full-size luxury crossover SUV produced by Mercedes-Benz since 2006. In each of its generations it is a three-row, seven-passenger vehicle positioned above the GLE (formerly Mercedes-Benz M-Class before 2016). The GLS is considered the flagship of the marque's SUV lineup, although the body-on-frame G-Class (originally intended for military off-roading but also offered in luxurious trims) is more expensive and has been in production longer.

The GLS shares the same unibody architecture with the GLE. Most GLS vehicles are assembled at the Mercedes plant in Alabama, except for a small number of early 2007 production vehicles which were manufactured in Germany. The first generation model (X164) was manufactured between 2006 and 2012 and was replaced in 2013 by the new generation GL-Class (X166).

From 2016 with the release of the facelifted second generation model, the GL-Class was renamed to GLS as per the revised nomenclature adopted by Mercedes. Under this scheme, SUVs use the base name "GL", followed by the model's placement in Mercedes-Benz hierarchy. The "G" is for geländewagen (German for off-road vehicle) and alludes the long-running G-Class. This is followed by the letter "L" that acts as a linkage with the letter "S", the SUV equivalent to the S-Class, marketing the GLS as the corresponding SUV to the S-Class full-size sedan.

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Common 2021 Mercedes-benz Gls450 problems

The 2021 Mercedes-Benz GLS 450 has been reported to have several common problems based on complaints from its owners. These issues include recalls related to the fuel system, seats, and structure of the vehicle, as well as intermittent electrical problems that are difficult to diagnose.

One of the most significant issues with the 2021 Mercedes-Benz GLS 450 is related to the fuel system. According to a recall report, during the manufacturing process, particles may have been trapped between the fuel rail and injectors, which can cause a fuel leak. This issue affects a wide range of Mercedes-Benz vehicles, including the GLS 450, and can result in a loss of drive power. Dealers will replace the fuel rail and fuel injectors, free of charge, to fix this issue.

Another recall issue is related to the seats of the 2021 Mercedes-Benz GLS 450. According to a recall report, the seats may have been assembled incorrectly, which can cause problems with the locks on the seats. This issue affects a range of Mercedes-Benz vehicles, including the GLS 450, and can be fixed by dealers inspecting and repairing the seats, free of charge.

The structure of the 2021 Mercedes-Benz GLS 450 has also been reported to have issues. According to a recall report, the rear door window trim bars may detach from the vehicle while driving. This issue affects a range of Mercedes-Benz vehicles, including the GLS 450, and can be fixed by dealers inspecting and securing the rear window trim bars, free of charge.

In addition to these recall issues, the 2021 Mercedes-Benz GLS 450 has also been reported to have intermittent electrical problems that are difficult to diagnose. According to a post on Reddit, the car may experience random communication errors, and the only way to fix the issue is to replace the whole computer system or load up the parts cannon with software updates and modules. This issue is particularly frustrating for both customers and dealerships, as it can be difficult to diagnose the exact cause of the problem.

In conclusion, the 2021 Mercedes-Benz GLS 450 has been reported to have several common problems based on complaints from its owners. These issues include recalls related to the fuel system, seats, and structure of the vehicle, as well as intermittent electrical problems that are difficult to diagnose. While these issues can be frustrating for both customers and dealerships, Mercedes-Benz has issued recalls and is working to fix these problems free of charge.

Is there a recall on Mercedes GLS 450 2021?

2021 Mercedes-Benz GLS 450 Recalls

A 48-Volt ground connection under the passenger seat may not be secured properly, resulting in the ground connection overheating.

Is the GLS 450 reliable?

Severity. The probability of a repair being a severe or major issue is 20% for the Mercedes-Benz GL450, compared to an average of 19% for luxury fullsize SUVs and 12% for all vehicle models.

Is the 2021 Mercedes reliable?

The 2021 Mercedes-Benz E-Class has a predicted reliability score of 78 out of 100. A J.D. Power predicted reliability score of 91-100 is considered the Best, 81-90 is Great, 70-80 is Average and 0-69 is Fair and considered below average.

Is it worth it to buy GLS?

Superb car and richest experience nice and just a little think I am the owner of Mercedes Benz GLS car and driving experience is superb and look like richest car of the world only for me. Service and maintenance is a bit expensive but the vehicle comfortable is top notch....

2021 Mercedes-benz Gls450 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2021 Mercedes-benz Gls450.

You can leave your car complaint via the special form below.

2021 Mercedes-benz Gls450 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 12 recalls for different components of the 2021 Mercedes-benz Gls450.

2024-03-15

Manufacturer: Mercedes-Benz USA, LLC
Components: ELECTRICAL SYSTEM:WIRING
Summary: 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.
Consequence: An overheated ground connection can increase the risk of a fire.
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.

2024-02-16

Manufacturer: Mercedes-Benz USA, LLC
Components: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
Summary: 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.
Consequence: An engine stall increases the risk of a crash.
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.

2023-06-26

Manufacturer: Mercedes-Benz USA, LLC
Components: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Summary: 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.
Consequence: A loss of drive power can increase the risk of a crash.
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.

2023-03-17

Manufacturer: Mercedes-Benz USA, LLC
Components: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 GLE350, GLE450, GLS450, GLS580, 2021 AMG GLE53, AMG GLE63, Maybach GLS600, AMG GLS63, and 2020 GLE580 vehicles. The air conditioner drain hoses may have been incorrectly installed, causing water to drain into the passenger compartment.
Consequence: Water intrusion into the foot wells may cause corrosion and/or short circuits to electrical components, increasing the risk of fire. In addition, the emergency call (eCall) feature may be disabled and the doors may not unlock, increasing the risk of injury. Also, the engine may not start or may enter a limp-home mode, increasing the risk of a crash.
Remedy: Dealers will inspect and reinstall the air conditioner drain hoses, as necessary, free of charge. Owner notification letters were mailed April 28, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of recall numbers 21V-288 and 19V-587. MBUSA's numbers for this recall are 2023030014 and 15.

2022-09-30

Manufacturer: Mercedes-Benz USA, LLC
Components: SEATS:MID/REAR ASSEMBLY
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 AMG GLS63, 2020-2022 GLS450 and GLS580 vehicles. Due to a manufacturing error, the locks on the third-row seatbacks may fail in the event of a crash.
Consequence: A seat with a seatback lock failure may not properly restrain occupants, increasing the risk of injury during a crash.
Remedy: Dealers will inspect and replace the third-row seatback, as necessary, free of charge. Owner notification letters were mailed November 18, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022100011.

2022-09-12

Manufacturer: Mercedes-Benz USA, LLC
Components: STRUCTURE:BODY
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2022 GLE350, GLE450, GLS450, 2021-2022 AMG GLE53, 2020-2021 GLE580, GLS580, and 2021 GLE400e, AMG GLS63, AMG GLE63 S, and Maybach GLS600 vehicles. Due to a manufacturing error, the rear door window trim bars may detach.
Consequence: Detached trim bars may cause a road hazard and increase the risk of a crash or injury.
Remedy: Dealers will inspect and secure the rear window trim bars, as necessary, free of charge. Owner notification letters were mailed November 1, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022090010.

2022-05-20

Manufacturer: Mercedes-Benz USA, LLC
Components: ELECTRICAL SYSTEM:SOFTWARE
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
Consequence: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.

2022-04-08

Manufacturer: Mercedes-Benz USA, LLC
Components: ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2022 GLE450, GLS450, 2021-2022 AMG GLE53, 2020-2021 GLE580, GLS580, 2021 AMG GLE63, Maybach GLS600 and AMG GLS63 vehicles. A ground cable bolt for the 48V ground connection under the front passenger seat may not be secured properly, which can cause the electrical cable to overheat.
Consequence: An overheated electrical cable can increase the risk of a fire.
Remedy: Dealers will inspect and tighten the ground cable bolt, as necessary, free of charge. Owner notification letters were mailed July 8, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022040017.

2021-10-22

Manufacturer: Mercedes-Benz USA, LLC
Components: VISIBILITY:GLASS, SIDE/REAR
Summary: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 GLE 350, GLE 580, GLS 450, GLS 580, AMG GLE 53, AMG GLE 63 S, and AMG GLS 63 S vehicles. The rear window may be insufficiently bonded to the tailgate, which could allow the rear glass to detach.
Consequence: Detached rear glass can become a road hazard, increasing the risk of a crash.
Remedy: Dealers will replace the rear window, free of charge. Owner notification letters were mailed December 8, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.

2021-05-14

Manufacturer: Mercedes-Benz USA, LLC
Components: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 CLA-Class, GLE/GLS-Class, A-Class, E-Class, E-Class Coupe and Convertible, GLA/GLB-Class, GLC-Class, CLS-Class, and AMG GT-Class 4-door Coupe vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The MBUX multimedia system software may cause the display to remain black, or reboot after startup. This could result in the rearview camera image not displaying properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Consequence: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
Remedy: The multimedia system software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed beginning June 28, 2021. Owners may contact MBUSA customer service at 1-800-367-6373. MBUSA's number for this recall is 2021050012.

2021-02-05

Manufacturer: Mercedes-Benz USA, LLC
Components: ELECTRICAL SYSTEM:SOFTWARE
Summary: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
Consequence: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Remedy: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.

2020-02-14

Manufacturer: Mercedes-Benz USA, LLC.
Components: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Summary: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2020 CLA250, CLA250 4MATIC and CLA35 AMG 4MATIC, 2020-2021 GLE350, GLE350 4MATIC, GLE450 4MATIC, GLS450 4MATIC and GLS580 4MATIC and 2021 GLE53 AMG Coupe, GLE63S AMG 4MATIC, GLS63 AMG 4MATIC and Maybach GLS600 4MATIC vehicles. The instrument cluster software may deactivate the illumination of certain interior switches (switch bar, overhead control unit, steering wheel) if the hazard lights are turned on and the ignition switch is in the 'off' position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 101, "Control and Displays."
Consequence: If the interior switches are not illuminated, they may be more difficult to find and operate, increasing the risk of a crash.
Remedy: MBUSA will notify owners, and dealers will update the instrument cluster software, free of charge. The recall began March 31, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020030019.

Additional sources

More sources of information about 2021 Mercedes-benz Gls450 problems:

Any GLS 580 reliability issues?? - MBWorld.org Forums

https://mbworld.org/forums/gls-class-x167/869246-any-gls-580-reliability-issues.html

Jul 4, 2023 ... ... 2021 Mercedes-Benz GLS 580 AWD 4MATIC with E-Body ... GLS450! S_W222's Avatar. S_W222 , 07-03-2023 ... issue (purchased Aug 2021, towed Oct 2021) .

2021 Mercedes-Benz GLS 450 Battery

https://www.mbofchesterfield.com/2021-mercedes-benz-gls-450-battery.htm

We can even arrange to have your 2021 Mercedes-Benz GLS 450 brought in to us. Common Car Battery Issues & Problems - How Do You Know If Your Car Needs A New ...

2017 or 2018 GLS450 common issues - MBWorld.org Forums

https://mbworld.org/forums/gls-class-x166/747742-2017-2018-gls450-common-issues.html

Jun 17, 2019 ... GLS Class (X166) - 2017 or 2018 GLS450 common issues - Hi, I have a 2012 GL450 with 80k+ miles and it has been a great car.

Help! Brand New GLS450 Malfunction : r/mercedes_benz

https://www.reddit.com/r/mercedes_benz/comments/15ph6o1/help_brand_new_gls450_malfunction/

Aug 12, 2023 ... ... problems are usually ... So Mercedes Benz of South Orlando spoke with Germany and it's a known issue ... We're having the same issue for our GLS 450 ...