How to Override the Security System on a 1998 Grand Marquis?

Answer The 1998 Mercury Grand Marquis features a SecuriLock anti-theft system that immobilizes the vehicle if someone without a properly programmed key tries to start it. Once the security system is activ... Read More »

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Pressure Regulator Problems on the 1998 Grand Marquis?

The 1998 Mercury Grand Marquis engine is available in one size, the 4.6-liter V-8. The fuel system is the sequential port style with the injectors fed through the use of a metal fuel rail atop the ... Read More »

How to Change a Signal Light on a 1998 Mercury Grand Marquis?

When a turn signal light burns out on your 1998 Mercury Grand Marquis, you should replace it immediately. The turn signals on your car alert other drivers when you are changing lanes or turning. Wi... Read More »

How to Override a Python Security System?

The Python security system consists of a remote-controlled device that can lock, unlock and start your car. The device provides security and draws attention to thieves who try to break into it or s... Read More »

How to Change the Security Code on a Mercury Grand Marquis?

Many newer models of the Mercury Grand Marquis feature electronic keypads under the exterior driver's side door handle. When the proper code is entered on this pad, the car doors automatically unlo... Read More »