Just got the ST back from the dealer. Great service from Mark Ficken Ford in Charlotte. Dropped it off Friday AM, picked it up Monday afternoon all fixed. It was indeed the front struts similar to the MY23 TSB posted earlier in this thread. I'm betting Ford has a stash of "potentially bad" shocks and its cheaper to deal with warranty claims versus going through each one trying to find out which are bad? They stated "excessive wear". The vehicle has under 2K miles on it! Definitely a defect or incorrect factory installation.
Here's the parts breakdown according to the invoice, all covered under warranty.
Cause: EXCESSIVE WEAR
Correction: TEST DROVE VEHICLE, VERIFIED CONCERN, USED CHASSIS EARSFOUNDNOISE TO BE
ONLY OVER BUMPS AND AROUND BOTH STRUTS WENT TOPINPOINT BFRONT BOTTOMING OR
RIDING LOW, B1 MEASURE RIDE HEIGHT FOUNDRIDE HEIGHT TO BE WITHIN SPEC, B2 CHECK FOR
DAMAGED OR WORNSTRUTS, FOUND EXCESSIVE WEAR IN BOTH FRONT STRUTS AND
STRUTHATS, REPLACED BOTH FRONT STRUTS AND STRUT HATS RETEST DROVECAR VERIFIED
REPAIR, CHECKED CAMBER ON ALIGNMENT RACK
Part Number Part Description Parts Total: $ 0.00
FOLB5Z-18124-B SHOCK ABSORBER
FOLB5Z-18124-K SHOCK ABSORBER
FO-W715932-S439 BOLT
FO-W520517-S440 NUT - HEX.
FO-W721102-S439 BOLT AND WASHE
FOLB5Z-3A197-A MOUNTING ASY
FO-W719506-S440 NUT - BLIND AN
FO-W714660-S439 BOLT - HEX.HEA
FO-W520115-S440 NUT - HEX.