I'm not to up on the electric parking break but with a manual parking break in my MB I just engage it and that locks the back wheels. Was never sure what the fronts were doing but I would guess that ABS is still operating and maintaining some sort of steerage. Not sure how this would work for you. The parking break is a very useful tool and going to this electric one is the only thing on the OB and many new cars I don't care for. Could be I just need to get used to it but for the life of me I don't know why you would pull out a purely mechanical emergency break. Anyway just a thought, I don't live where snow is that much of an issue.