The 2020 Mercedes-Benz GLS Class has 6 recalls, the most serious being a loose ground connection under the front passenger seat where wiring can overheat and melt, creating a fire risk.
A misrouted air conditioning drain hose can allow water to leak into the cabin and short out electrical components, potentially disabling door locks, knocking out the emergency call system, reducing engine power, or preventing the vehicle from starting. On the safety equipment side, the locking springs for the third-row seat backrest may not have been installed correctly, leaving the backrest free to move in a crash. There is also a label discrepancy on vehicles equipped with Michelin Primacy Tour A/S tires, where the maximum pressure printed on the tire sidewall does not match the figure on the door placard and fuel cap, though this mismatch does not affect how safely the tires can be used.
At a glance
What can fail
The bolt securing the 48V ground connection under the passenger seat may be loose. This can cause wiring to overheat and melt.
What the fix does
Mercedes-Benz will mail you instructions to visit a dealership. They will inspect the ground connection and tighten it if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
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At a glance
What can fail
The air conditioning drain hose may be installed incorrectly, allowing water to leak into the vehicle and potentially short-circuit electrical components like door locks and the emergency call system, or reduce engine power.
What the fix does
A dealership will inspect the air conditioning hose installation and correct it if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The springs that lock the third-row seat backrest may not be installed correctly, so the backrest might not fully lock in place.
What the fix does
A dealership will inspect the third-row seat and replace the backrest if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Certain Michelin Primacy Tour A/S tires have a maximum pressure of 320 kPa (47 psi) marked on the sidewall, but the vehicle's tire loading label and gas cap show 300 kPa (44 psi). This creates inconsistent pressure information.
What the fix does
Mercedes-Benz has corrected the tire loading and information label on all new vehicles to ensure consistent maximum pressure specifications.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A ground connection under the front passenger seat may not be properly tightened, allowing the connection and wiring to overheat.
What the fix does
Dealerships will inspect and tighten the 48 V electrical system ground connection under the front passenger seat as needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The air conditioning drain hose may be installed incorrectly, allowing water to leak into the vehicle and potentially short-circuit electrical components like door locks and the emergency call system, or reduce engine power and starting ability.
What the fix does
A dealer will inspect and correct the air conditioning hose installation if needed. Do not use the air conditioning until the vehicle is inspected.
Summarized — see the official notice for exact wording, dates, and contacts.
