Fully tested complete remotes with a battery installed. Free Tech support is available with your purchase. Easy to follow step by step DIY programming instructions are included with your purchase. The 1998 Grand Marquis is the only vehicle that requires dealer programming! See product description for a complete list of vehicles this part is compatible with Replaces CWTWB1U343， CWTWB1U313， 8AB-15K601-AA， 3W73-15K601-AA， 3W7Z-15K601-AA This is a replacement part to match the original in form and function Pair of replacement keyless entry remote with battery and electronics installed. This part is Compatible with the following vehicles and part numbers: 1995-2006 Ford Crown Victoria 1995-1997 Lincoln Continental 1997-1998 Lincoln Mark VIII 1995-1997 Lincoln Town Car 1995-2006 Mercury Grand Marquis CWTWB1U343 CWTWB1U313 8AB-15K601-AA 3W73-15K601-AA 3W7Z-15K601-AA Easy to follow step by step DIY programming instructions are included with your purchase. The 1998 Grand Marquis is the only vehicle that requires dealer programming!