The warranty on Bosch dishwashers only covers the cost of repairs due to mechanical problems resulting from a defect in materials or workmanship. If the mechanical problems result from any other issue, the customer must pay for any necessary repairs.
The majority of Bosch dishwashers are backed by the same warranty, which is a one-year limited parts and labor warranty, as of 2015. In addition to the one-year warranty for mechanical problems, Bosch also provides a 30-day limited warranty against any cosmetic defects in workmanship or material. The cosmetic defects warranty does not apply to any dishwashers that were purchased as display, floor, "As-is" or "B" stock models.
Both the mechanical and cosmetic defects warranty periods begin on the date the dishwasher was purchased and are only valid for the original owner. If the dishwasher was installed in a new home, the warranty period begins on the date the owner closed on the home. To obtain warranty service, it is necessary to show the original proof of purchase in order to verify that the product is still under warranty. For any problems with a Bosch washing machine or other appliance, owners should call Bosch customer service at 1-800-944-2904.
Full warranty details can be found in the product's owner's manual, most of which can be downloaded from the Bosch website.