warning over 292,000 customers with select ML, GL, and R-Class vehicles between the 2006 and 2012 model years to stop driving them.
The German automaker said in a recall notice posted on the National Highway Traffic Safety Administration's website that moisture can accumulate and cause corrosion in the cars' brake booster housing units, potentially resulting in a vacuum leak and reduced brake performance.
In rare cases of very severe corrosion, hard breaking could potentially cause mechanical damage to the brake booster, resulting in brake failure and increasing the risk of a crash.
A foot-activated parking brake would still work.Mercedes notes that drivers with impacted vehicles may notice a change in the feel of their brake pedal or a hissing or airflow noise when applying the brake pedal before the issue occurs.