NHTSA Complaint #11620780 — 2018 RAM 2500

Driving on interstate highway with cruise control engaged. Experienced rapid deceleration as cruise control disengaged without driver input. Received anti-lock braking error / service electronic braking system error. Was very dangerous situation to have occur unexpectedly and could have easily resulted in rear end collision or loss of control of vehicle. Received no warning prior to this failure. Issue has been sporadic but occurring more frequently. Vehicle has less effective braking in adverse road conditions. Never know when the anti lock brake system will be functional. A bump or vibration in the road can cause it to engage or disengage. Ram dealer service dept indicates Hydraulic Control Unit needs to be replaced. Looking online, I see this is an exceptionally common occurence in same year/make vehicles. So much so that the replacement part is backordered for months.