Defect
Certain vans equipped with an integrated backup battery do not have a cover installed over the front passenger's seat base. As a result, if an object made of a conductive material is dropped into the opening, it could make contact with the battery terminals. This could result in a short circuit.
Safety Risk
A short circuit could increase the risk of a fire.
Remedy
Mercedes-Benz will notify owners by mail and instruct them to take their vehicle to a dealer to install a cover over the front passenger's seat base. Consumers should not use a seat base with a battery as a storage compartment.