WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
Using special tools MB992075 and MB992183, press-fit a new crankshaft rear oil seal into the oil seal case.
NOTE:
Put the edge position in place as shown in the illustration.
Fig 1: Identifying Using Special Tools MB992075 And MB992183