The 2011 Mercedes-Benz Ml550 has 3 NHTSA recall campaigns affecting an estimated 1,077,057 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 11 complaints with NHTSA, most often about the air bags. Last updated July 5, 2026.
Recall campaigns
SERVICE BRAKES, HYDRAULIC24V2980002024-04-2615,604 affected
Defect
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML, GL, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.
Consequence
Reduced brake performance or brake failure can increase the risk of a crash.
Remedy
Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed on May 24, 2024. Owners may…
SERVICE BRAKES, HYDRAULIC22V3150002022-05-09350,294 affected
Defect
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML-Class, GL-Class, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake…
Consequence
Reduced brake performance or brake failure can increase the risk of a crash.
Remedy
Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed June 30, 2022. Owners may contact…
AIR BAGS16V0810002016-02-11711,159 affected
Defect
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2009-2010 ML320 BlueTec 4Matic, GL320 BlueTec 4Matic and R320 CDI 4Matic, 2011 E350 Cabriolet and E550 Cabriolet, 2009-2011 ML350, ML350 4Matic, ML550 4Matic, ML63 AMG, and C63 AMG, 2010-2011 ML450 4Matic Hybrid, E350 Coupe, E350 4Matic, E550 Coupe,…
Consequence
In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy
MBUSA will their notify owners, and Fiat Chrysler will notify the affected Chrysler owners. Dealers for the respective brands will replace the driver's frontal air bag module, free of charge. This recall began November 2016. Mercedes-Benz owners may contact MBUSA customer service at 1-800-367-6372 and Chrysler…
Complaints by component
AIR BAGS
2
ELECTRICAL SYSTEM
1
ELECTRICAL SYSTEM:WIRING
1
EXTERIOR LIGHTING:BACK UP LIGHTS
1
EXTERIOR LIGHTING:BRAKE LIGHTS
1
EXTERIOR LIGHTING:TAIL LIGHTS
1
SERVICE BRAKES
1
STEERING
1
VISIBILITY:SUN/MOON ROOF ASSEMBLY
1
WHEELS
1
Total complaints11
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The break line in the rear locate right above the gas tank is corroded by rust due to the clip is holding the break line allows the moisture to accumulate. The car will lose its break completely when this happens. There is no way for the car owner to inspect this problem until the car has no break…”
“Takata recall...I have had a recall for a very long time on my air bags and have never been contacted by mercedes again after the initial recall. I am driving around with a potentially deadly device in my vehicle. I find this ridiculous especially since I am driving a mercedes which is supposed to…”
“Takata recall. Have contacted dealership numerous times in the last year and half requesting when it would be fixed and are told it is still pending. I would expect faster service on this potential danger with the defective driver side airbag.”
“Driving on a feeder road in light traffic at about 55 mph, we were startled by an enormous loud explosive sound on our sunroof of the ml 550, like a bomb sound. Pulled over and slid the inside vented headliner/curtain back about 6 inches and saw a hole the size of two fists plus shattered glass.…”
“The car would make loud noises even at a small speed, service mgr at smythe told me that mb had this defect and he stated he put loctite 648 per my notes o 8/24./2012 at 9n wheel bearing(s)! Mb should not have such a problem. My previous ml 500 also had a steering problem and mb never notified us…”
“The car would make loud noises even at a small speed, service mgr at smythe told me that mb had this defect and he stated he put loctite 648 per my notes o 8/24./2012 at 9n wheel bearing(s)! Mb should not have such a problem. My previous ml 500 also had a steering problem and mb never notified us…”
“Yesterday, I was driving our 2011 mercedes ml550 on a california highway, and suddenly lost my brake lights, turn signal lights and reverse lights, due to a rodent eating the wiring of the car. This is the second time this year a rodent has eaten the wiring of this car. 4 months ago a rodent ate…”
“Yesterday, I was driving our 2011 mercedes ml550 on a california highway, and suddenly lost my brake lights, turn signal lights and reverse lights, due to a rodent eating the wiring of the car. This is the second time this year a rodent has eaten the wiring of this car. 4 months ago a rodent ate…”
Defect investigations
InvestigationEA21002 Opened 2021-09-17 · open
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
InvestigationEA21002 Opened 2021-09-17 · open
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2011 Mercedes-Benz Ml550 as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
contains ads and affiliate links. Full methodology.