A method for controlling a multi-clutch transmission of a vehicle, the multi-clutch transmission comprising: - a first input shaft, a second input shaft, a first shaft, and a second shaft, - at least a first and second tooth clutch (22, 23, 24; 20, 21) arranged upon different shafts among; said first input shaft, said second input shaft, said first shaft and said second shaft, wherein each of said first and second tooth clutch (22, 23, 24; 20, 21) is provided with a first and a second member respectively, wherein said first and said second member are in drive connection with one of said first and second input shaft (12; 13) respectively, - a central synchronizer provided with a first active state and a second active state (d1; d2) for increasing or decreasing a speed of the one of the first and second input shaft (12, 13) which is not transferring torque, depending of which of first and second active state (d1; d2) said central synchronizer is provided in, wherein said first and second tooth clutches (22, 23, 24; 20, 21) can be arranged in an engaged and a disengaged position, whereby in said engaged position said first and second tooth clutch (22, 23, 24; 20, 21) enables an operative connection between the first and second member of the tooth clutch (22, 23, 24; 20, 21) and in said disengaged position said operative connection is disabled, wherein during a gear shifting procedure from a momentary gear to a predicted gear; the method comprises the steps of: - activating said central synchronizer to said first active state (d1, d2), such that the speed of a first member of a tooth clutch (22, 23, 24; 20, 21) to be engaged is synchronized with a speed of a second member of a tooth clutch (22, 23, 24; 20, 21), - attempting to engage said tooth clutch (22, 23, 24; 20, 21) to be engaged, characterised in, that if said tooth clutch (22, 23, 24; 20, 21) to be engaged is determined not to be fully engaged a predetermined period of time after an initiation of an engagement, the following steps are performed: - activating said central synchronizer to said second active state (d1, d2) such that the speeds of the two members of the tooth clutch (22, 23, 24; 20, 21) to be engaged are slightly unsynchronized, and - engaging said tooth clutch (22, 23, 24; 20, 21), to be engaged. - a first input shaft, a second input shaft, a first shaft, and a second shaft, - at least a first and second tooth clutch (22, 23, 24; 20, 21) arranged upon different shafts among; said first input shaft, said second input shaft, said first shaft and said second shaft, wherein each of said first and second tooth clutch (22, 23, 24; 20, 21) is provided with a first and a second member respectively, wherein said first and said second member are in drive connection with one of said first and second input shaft (12; 13) respectively, - a central synchronizer provided with a first active state and a second active state (d1; d2) for increasing or decreasing a speed of the one of the first and second input shaft (12, 13) which is not transferring torque, depending of which of first and second active state (d1; d2) said central synchronizer is provided in, - activating said central synchronizer to said first active state (d1, d2), such that the speed of a first member of a tooth clutch (22, 23, 24; 20, 21) to be engaged is synchronized with a speed of a second member of a tooth clutch (22, 23, 24; 20, 21), - attempting to engage said tooth clutch (22, 23, 24; 20, 21) to be engaged, - activating said central synchronizer to said second active state (d1, d2) such that the speeds of the two members of the tooth clutch (22, 23, 24; 20, 21) to be engaged are slightly unsynchronized, and - engaging said tooth clutch (22, 23, 24; 20, 21), to be engaged.