Device and method for automatically disabling the automatic parking brake at start up.

A method for assisting in the boot of a vehicle including a power train and an automatic parking brake equipped with a means for executing a command to release or deactivate the automatic parking brake, characterized in that it consists in executing, at least after a phase of starting the power train: - a step of estimating a value of the transmitted torque (ECT-threshold) which balances the vehicle in the slope; - A loop consisting of executing an incremental calculation of an estimation of the torque actually transmitted (ECT) at the given time while the torque estimate actually transmitted (ECT) is insufficient to exceed the transmitted torque estimation (ECT-threshold); then - a step of producing a command to release or deactivate the automatic parking brake.