The 2011 Mercedes-Benz ML550 has 3 recalls, the most serious being a faulty airbag inflator that can rupture in a crash and send metal fragments into the cabin, striking the driver or passengers.
The two remaining recalls both address the same brake booster defect. Moisture can work its way into the brake booster housing and cause corrosion inside the unit, which reduces the power assist that helps the brake pedal stop the vehicle. In a worst-case scenario, the booster can fail entirely, leaving the driver with significantly harder pedal effort and longer stopping distances. Prior repair attempts did not fully resolve the issue, which is why this defect appears across more than one recall campaign.
At a glance
What can fail
Moisture can accumulate inside the brake booster housing and cause rust, potentially reducing braking power or causing complete brake failure.
What the fix does
Dealers will remove the rubber sleeve, inspect the brake booster, and replace it if needed at no cost.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Moisture can accumulate inside the brake booster housing, causing corrosion that reduces braking performance or causes brake failure.
What the fix does
Dealers will remove the rubber sleeve, inspect the brake booster, and replace it if necessary at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The driver's front air bag inflator may build up excessive pressure and rupture when the air bag deploys.
What the fix does
Dealers will replace the driver's front air bag module at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
