Load estimator

The invention relates to a method and a detecting system for detecting the loading of a vehicle (1), the detecting system comprising at least one accelerometer (5) in a first position and arranged in a predefined direction on said vehicle (1), in which the gravitational acceleration in said predefined direction may be used as a reference value for the accelerometer (5). The accelerometer (5) is arranged to detect the deviation of acceleration relative to said reference value, and said deviation is related to the loading of said vehicle (1).