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.
Use a drill to make a hole just deeply enough for the tap to stand on the steering lock bolt.
Remove the steering lock bolt using the screw extractor (Recommended tool: MB992684), or equivalent.
Fig 1: Removing Steering Lock Bolt Using Screw Extractor