I had the Chassis malfunction pop-up while I was driving in the mountains on my way back to Chicago from PCD and the car was brand new with no Dinan S2. Car didn't feel any different except it was locked to comfort mode. Turning off the car and restarting it would make it disappear until any sudden movement such as hard acceleration or fast turns. Got home and went to the dealership and service adviser said my power steering fluid was low. The fluids got topped off and I have not had any problems since then.
15 MB E63S AMG
14 BMW M6 Vert - Alpine White & Full Sakhir Orange. Comp Pack, Executive Pack, Driver Assistance Plus, B&O & 343M Wheels.
14 MB GL550
14 Porsche Boxster S (Gone)
12 BMW 550i xDrive - Dinan Stage 5 (Gone)
13 Infiniti JX35 AWD (Gone)
07 BMW 550i (Gone)
09 Hyundai Genesis 4.6 (Gone)