My car is ok most of time but sometimes all auto gearbox lights come up and tc light and engine managment ie spanner when this happens she goes into 3rd and drives but sluggishly also if it happens when overtaking it will stay in lower gear. garage told me it was gearbox ecu but am not convinced as if u wiggle the lever it returns to normal assuming u are quick enough to do it b4 lights come up also would secondhand ecu need gearbox ecu need coded as per main ecu , oh and where is it guys all help appreciated andy thanks