Mercedes-Benz New Zealand has announced a recall of certain ML-Class, GL-Class and R-Class vehicles from model years between 2005 and 2013 due to a concern with the fitted brake booster. 

The recall affects 1982 vehicles in New Zealand.

Based on isolated reports and subsequent analysis, Mercedes-Benz has found that in some of the vehicles mentioned above the function of the brake booster could be affected by advanced corrosion in the joint area of the housing. 

After extended time in the field and in conjunction with significant water exposure, this corrosion might lead to a leakage of the brake booster. In this case, the brake force support might be reduced, leading to an increase in the brake pedal force required from the driver to decelerate the vehicle and/or to a potentially increased stopping distance. This may be accompanied by a hissing or airflow noise when applying the brake. 

Additionally, in rare cases of very severe corrosion, it might be possible for a particularly strong or hard braking manoeuvre to cause mechanical damage to the brake booster, whereby the connection between brake pedal and brake system would fail. In such cases, it would not be possible to decelerate the vehicle via the service brake. Thus, the risk of a crash or injury would be increased. The function of the foot parking brake is not affected by this issue. 

Accordingly, Mercedes-Benz is initiating a recall and has already issued letters to the owners of all potentially affected vehicles. The recall process will involve inspecting potentially affected vehicles and, depending on the results of the inspection, replacing the parts where necessary. 

“Until the inspection takes place, we ask our customers not to drive their vehicles. If necessary, Mercedes-Benz will work with the customer to arrange an alternative transport solution, during this time, said Mercedes-Benz NZ is a statement. 

Owners with questions or concerns are asked to please contact their preferred authorised Mercedes-Benz Service Centre. Alternatively, information is available at its website. 

“We deeply regret any resulting inconvenience – but consider it our duty to act consistently and decisively in line with our brand promise,” says the brand.