For dealers, clients and upfitters sending Mercedes-Benz or Freightliner Sprinter engineering technical requests regarding retro-fitments, Parameterizable Special Module (PSM) or Bodybuilder issues, please use the following web-address: www.UpfitterPortal.com
Please make sure that every request at minimum contains:
VIN
Request (as detailed as possible)
Contact information including: Name, dealer, upfitter or individual customer, telephone number, location, and e-mail.