2009 Mercedes-Benz S-Class Electrical System

The contact owns a 2009 Mercedes-Benz S550. The contact stated that while driving at an undisclosed speed with the air condition system activated, there was hot air blowing out of the vents. The contact stated that the hot air was blowing out of the vents and the floorboard was soiled with water. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the compressor and the motherboard needed to be replaced. The vehicle was repaired; however, the failure recurred. The vehicle was taken back to the independent mechanic. The vehicle was diagnosed with electrical wiring failure. The electrical wiring underneath the driver and passenger seats was burned. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline. The failure mileage was approximately 73,000. The VIN was unavailable