Chassis ECM Theft-locking. P/N 4L1T-15K602-AE MW. 4L1T-15K602-AE Chassis ECM Theft-locking. P/N 4L1T-15K602-AE. EXPEDITION 03 Theft-Locking; (remote keyless entry and alarm), from 2/3/03. EXPEDITION 04 Theft-Locking; (remote keyless entry and alarm).
