NHTSA (USA)Critical
At a glance
The 2020 Mercedes-Benz GLS 580 has 19 recalls, the most serious being multiple fire risks: incorrectly installed air conditioner drain hoses that let water collect and short-circuit electrical components, fuel injectors that can leak near hot engine parts, and an unsecured 48-volt ground connection under the passenger seat that can overheat.
On the occupant safety side, the front airbag wiring may be routed incorrectly and the airbag control unit software may be programmed incorrectly, either of which can prevent the airbags from deploying properly in a crash. Third-row seatback locks can fail in a crash, and seats on certain vehicles may have been assembled incorrectly, reducing their ability to restrain occupants. The electronic stability control software can pull the vehicle to one side during hard evasive maneuvers, and vehicles equipped with the optional illuminated grille star can experience failures in the power steering, wiper motor, or left headlight. Front struts and rear shock absorbers can leak and wear prematurely, reducing handling. Rear door window trim can detach and become a road hazard on the highway. There are also two separate recalls where the automatic emergency call system may fail to connect or may send responders to the wrong location. The multimedia system software can cause the backup camera display to go black. Interior switch illumination can fail, making controls harder to find while driving. The sunroof may close unexpectedly when car wash mode is activated.
At a glance
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What can fail
The 48-Volt ground connection under the passenger seat may not be properly secured, which can cause it to overheat.
What the fix does
Dealers will inspect and tighten the 48-Volt ground connection as needed at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A software error causes the sunroof to close unexpectedly when car wash mode is activated.
What the fix does
Dealers will update the sunroof control unit software at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Air conditioner drain hoses may be incorrectly installed, allowing water to drain into the passenger compartment instead of outside the vehicle.
What the fix does
Dealers will inspect the air conditioner drain hoses and reinstall them correctly at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The locks securing the third-row seatbacks may fail during a crash due to a manufacturing error, potentially allowing the seatbacks to move unexpectedly.
What the fix does
Dealers will inspect and replace the third-row seatback as needed at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The trim bars around the rear door windows may come loose and detach due to a manufacturing error.
What the fix does
Dealers will inspect the rear window trim bars and secure them as needed at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front air bag wiring harness may be routed incorrectly, preventing the air bag from deploying properly in a crash.
What the fix does
Dealers will correct the wiring harness routing at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A software error in the communication module's SIM card can prevent mobile network connection, which disables the emergency call (eCall) system.
What the fix does
The communication module software will be updated at no cost through an over-the-air update or by a dealer.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The ground cable bolt for the 48V electrical connection under the front passenger seat may not be properly tightened, which can cause the cable to overheat.
What the fix does
Dealers will inspect and tighten the ground cable bolt as needed at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Manufacturing debris may be trapped between the fuel rail and injectors, potentially causing fuel to leak.
What the fix does
Dealers will replace the fuel rail and fuel injectors at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The seats may have been assembled incorrectly during manufacturing, potentially affecting their function or safety.
What the fix does
Dealers will inspect your seats and repair them if needed at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The air bag control unit software may be programmed incorrectly, causing the driver's air bag to deploy improperly.
What the fix does
Dealers will replace the air bag control unit at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The MBUX multimedia system software may cause the display to go black or restart after startup, preventing the rearview camera image from displaying properly.
What the fix does
A dealer will update the multimedia system software, or you can receive the update over-the-air, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The air conditioner drain hoses may have been installed incorrectly, allowing water to drain into the passenger compartment instead of outside the vehicle.
What the fix does
Dealers will inspect the air conditioner drain hoses and correct the installation as needed at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
During sharp evasive maneuvers, the Electronic Stability Program software may apply torque unevenly to a front wheel, causing the vehicle to pull to one side.
What the fix does
Dealers will update the Electronic Stability Program software at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The communication module software may fail to send your vehicle's correct location to emergency services when the eCall system activates during a crash.
What the fix does
A dealer will update the communication module software, or the update will be sent over-the-air, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The illuminated star logo in the front grille may have an improperly installed electrical ground connection, which could affect other components sharing that ground, including power steering control, wipers, and the left headlight.
What the fix does
Dealers will relocate the ground connection to restore proper electrical function.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The piston seals in the front struts and rear shock absorbers may leak, causing these suspension components to fail prematurely.
What the fix does
Dealers will replace the front strut assemblies and rear shock absorbers at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The instrument cluster software may turn off the lights on certain interior switches (switch bar, overhead controls, steering wheel) when hazard lights are on and the ignition is off.
What the fix does
Dealers will update the instrument cluster software at no cost to restore proper switch illumination.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The trim around the rear door windows may come loose and detach from the vehicle.
What the fix does
Dealers will inspect the rear door window trim and fasten it as needed at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.