Explanation of Defect

• Mercedes recalled 3,283 vehicles due to a windshield wiper defect. Specifically, a malfunction may occur on the signal acquisition and actuation module-front transistors, says Mercedes and the NHTSA. Incorrect storage of the transistors led the components to be exposed to excess humidity in the SAM-F, which helps control center-console lighting and vehicle functions.
  
  

Consequences and Safety Risk

• The presence of moisture, coupled with the thermal stress during "reflow soldering," can cause transistor damage to the extent that the windshield wiper motor may stop working. The potential for an accident rises if the windshield wipers fail and the driver can't see during inclement weather
  
  

Free Fix

• Mercedes began notifying drivers affected by the recall on May 2, 2008; the company provided instruction on where to bring the cars for a free repair. Authorized dealers will inspect the SAM-F transistors and replace all damaged or potentially malfunctioning units at no charge to the registered vehicle owners. Concerned consumers who were not notified may contact Mercedes or the NHTSA to determine whether their cars are affected by this recall.