Your breaks will always work, regardless of any electrical systems. You might lose boosters, but I doubt it, given that the car still has electrical power. Som

Your breaks will always work, regardless of any electrical systems. You might lose boosters, but I doubt it, given that the car still has electrical power. Some newer cars come with electrical parking break, and those will refuse to engage if you're moving. A lot of people in this thread seems to confuse this with actual breaks.