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2021 Mercedes-Benz Gls 450 Problems and Recalls
Owners filed 30 complaints with NHTSA about the 2021 Mercedes-Benz Gls 450, most often about the electrical (47% of complaints). It is the 3rd most complained-about Gls 450 model year since 2000 and has 12 recalls.
Most common 2021 Mercedes-Benz Gls 450 problems
Electrical
14 complaints · 47%Parts named most often: 12v/24v/48v battery.
Other or unspecified
8 complaints · 27%Driver assistance
4 complaints · 13%Parts named most often: adaptive cruise control, lane keep, blind spot detection, warning.
The contact owns a 2021 mercedes benz gls450. The contact stated while driving 75 MPH with the cruise control engaged, the vehicle decelerated to 45 MPH than to 15 MPH. On another occasion, while driving 80 MPH, the vehicle independently decelerated to 45 MPH. There was no warning light illuminated. The vehicle was…
Engine
3 complaints · 10%
Complaints are owner reports to NHTSA, not verified defects. One complaint can name several components, so shares add up to more than 100%.
2021 Mercedes-Benz Gls 450 recalls
Electrical: wiring
Risk: An overheated ground connection can increase the risk of a fire.
Fix: 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.
Full defect 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.
Transmission: software
Risk: An engine stall increases the risk of a crash.
Fix: 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.
Full defect 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.
Fuel system: fuel pump
Risk: A loss of drive power can increase the risk of a crash.
Fix: 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.
Full defect 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.
Visibility and wipers: defroster/defogger/hvac system
Risk: 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.
Fix: 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.
Full defect 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.
Seats: mid/rear assembly
Risk: A seat with a seatback lock failure may not properly restrain occupants, increasing the risk of injury during a crash.
Fix: 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.
Full defect 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.
Body and structure: body
Risk: Detached trim bars may cause a road hazard and increase the risk of a crash or injury.
Fix: 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.
Full defect 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.
Electrical: software
Risk: 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.
Fix: 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.
Full defect 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.
Electrical: interior/under dash
Risk: An overheated electrical cable can increase the risk of a fire.
Fix: 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.
Full defect 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.
Visibility and wipers: glass, side/rear
Risk: Detached rear glass can become a road hazard, increasing the risk of a crash.
Fix: 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.
Full defect 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.
Backup camera: camera
Risk: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
Fix: 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.
Full defect 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."
Infotainment and connectivity: auto crash notification
Risk: Failure of the ecall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Fix: 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.
Full defect 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.
Electrical: instrument cluster/panel
Risk: If the interior switches are not illuminated, they may be more difficult to find and operate, increasing the risk of a crash.
Fix: 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.
Full defect 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."
Recall repairs are free at any franchised dealer. Enter your VIN at nhtsa.gov/recalls to see which recalls are still open on your car.
Questions about the 2021 Mercedes-Benz Gls 450
- What are the most common problems with the 2021 Mercedes-Benz Gls 450?
- By NHTSA owner complaints: electrical (14 complaints); other or unspecified (8 complaints); driver assistance (4 complaints).
- How many recalls does the 2021 Mercedes-Benz Gls 450 have?
- 12 recalls listed by NHTSA, the latest from March 15, 2024 (electrical). Check your VIN at nhtsa.gov/recalls to see which ones are still open on your car.
- Is the 2021 a bad year for the Mercedes-Benz Gls 450?
- It is the 3rd most complained-about Gls 450 model year since 2000, with 30 complaints. Complaint counts are not adjusted for how many cars were sold, so popular years collect more of them, and the newest years have had less time to.