NHTSA Complaint #11060894 — 2015 MERCEDES-BENZ CLA250

CAR TAKEN TO MERCEDES BENZ SERVICE DEPARTMENT ON 1/3/2018 FOR COLLISION ASSIST SYSTEM FAILURE ON 12/30/2017 CAUSING CAR TO LOSE POWER, COLLISION ASSIST SYSTEM WARNING ALERT, AUTO BRAKING (ALL AT HIGHWAY SPEED WHILE ENTERING HIGHWAY FROM ON-RAMP). ONLY SOLUTION WAS TO LIMP TO SIDE OF FREEWAY AND TURN OFF CAR, THEN RESTART. ALL WARNINGS CLEARED, CAR RETURNED TO NORMAL STATE. ABLE TO DRIVE. OCCURRED TWICE BEFORE (12/22/2017 AND 12/23/2017). AFTER RECEIVING CAR BACK FROM MERCEDES BENZ SERVICE DEPARTMENT, REPORTED ISSUE WAS CA SENSOR WAS LOOSE IN ITS SEAT AFTER VISUAL INSPECTION. REPORTED TO HAVE REPLACED SENSOR AND RE-SEATED, INITIAL STARTUP ON CA MODULE INCLUDING UPDATE AND CALIBRATION, TEST DRIVE OF 9 MILES WITHOUT INCIDENT, REPORTED AS "EVERYTHING FUNCTIONING AT THIS TIME". VEHICLE RETRIEVED FROM MB ON 1/4/2018. ON 1/6/2018, ISSUE OCCURRED AGAIN AFTER MAKING RIGHT HAND TURN ON SURFACE ROAD AND ACCELERATING TO APPROXIMATELY 25 MPH (45 MPH ZONE). SAME SITUATION: LOSS OF POWER, AUTO DAMPENING, COLLISION ASSIST WARNING AND CHIMES. TAKING VEHICLE BACK TO MB SERVICE DEPARTMENT. THIS IS A KNOWN ISSUE AMONG 2015 MB CLA250S, AS REPORTED ON MBWORLD BLOG SITE - HTTPS://MBWORLD.ORG/FORUMS/C-CLASS-W205/584375-COLLISION-PREVENTION-ASSIST-PLUS-INOPERATIVE-ERROR.HTML.