WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
SPECIAL TOOL(S) SPECIFICATIONS
Torx Bit, Safety Belt Bolt 501-010 (T77L-2100-A)
Fig 1: Safety Belt Buckle -- Rear With Torque Specifications