NHTSA Complaint #11542979 — 2020 WINNEBAGO REVEL

Our 2020 Sprinter (Winnebago Revel) currently has 13,212 miles on it. During our ownership we have experienced about(?) 12 failures of the Advanced Driver Assistance System, during our last trip of ≈1400 miles we experience this failure twice, both occurring while driving on a state highway while being passed in the opposite direction by on-coming traffic. This trip triggered a memory of at least one previous failure that also occurred while being passed in the opposite direction by on-coming traffic. When this failure happens the cruise control is immediately deactivated which requires the driver to take control of the vehicles speed, during my last trip a semi-truck was preparing to pass me and was very close behind my van, when my van quickly slowed down it appeared that the driver of the truck had to take evasive maneuvers to avoid an accident. When this failure happens two error messages are displayed on the instrument display behind the steering wheel, “Active Brake Assist Functions Limited see operator’s manual” and “Active distance assistance inoperative”. After this failure happens I have unsuccessfully attempted to correct the failure by performing the following: •>Turn off the van for 1 to 45 minutes. •>Cleaning all of the sensors in the front bumper, glass windshield & what may be a sensor in the front grille. •>Various combinations of steering wheel button pushes. •Searched the manual, Mercedes indicates that I should “Visit a qualified specialist workshop”. System functionality eventually returns indicating a message similar to “active distance assist now available” (I did not photograph this message). This can happen as soon as ≈45 minutes and as long as the next day. During dealer recall service I very loudly complained about this failure there was no written documentation that I had complained and no mention of any correction to address this problem.