Possible Causes
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
DTC 25/1153 could be caused by short between Blue/Black wire (circuit LSP+) and Gray/Black wire (circuit LSP-), short to ground or open in Blue/Black or Gray/Black wires, seat position sensor malfunction or air bag sensor assembly malfunction.