Hi Andy. It looks like you'll need to remove the splash shield. Hope this info helps
Accessory Drive Belt
Removal and Installation
With the vehicle in NEUTRAL, position it on a hoist.
Remove the 7 pin-type retainers and the RH splash shield.
Remove the 3 A/C compressor pulley shield retainers and the shield.
Using a suitable belt tensioner release tool, rotate the accessory drive belt tensioner counterclockwise and remove the accessory drive belt.
NOTE: Refer to the illustration for correct drive belt routing.
To install, reverse the removal procedure.
2007 Ford Five Hundred serpentine drive belt replacement