How do you change a vw sharan 1.9 tdi timing belt?

To change the timing belt on a VW Sharan 1.9 TDI, first ensure the engine is cold and disconnect the battery. Remove the accessory belts and the timing belt cover to access the timing belt. Align the timing marks on the crankshaft and camshaft, then loosen the tensioner and remove the old belt. Install the new timing belt, ensuring proper tension and alignment with the timing marks, then reassemble the components in reverse order. Always consult the vehicle's service manual for specific torque settings and procedures.