If the switch is mounted securely and it keeps tripping during normal driving conditions I would suspect the switch is bad.
On a 2003 Mercury Sable sedan : The fuel pump inertia switch ( shut off switch ) is in the trunk , on the passenger side of the trunk , behind the trunk liner ( there is an access hole )
Could be a bad inertia switch.
On a 1996 Mercury Sable : The fuel pump shut off switch ( inertia switch ) is in the trunk , behind the trunk liner on the passenger side ( there is an access hole )
On a 1997 Mercury Sable : The fuel pump shut off switch ( inertia switch ) is located on the passenger side of the trunk , behind the trunk liner ( there is an access hole )
On a 1999 Mercury Sable wagon : The fuel pump shut off switch ( inertia switch ) is in the cargo area , behind the service panel on the passenger side
In a 1999 Mercury Sable the fuel pump shut off switch ( inertia switch ) is located behind the trunk liner , on the right side ( passenger side ) There is an access hole
In a 1997 Mercury Sable : The fuel pump shut off switch ( inertia switch ) is in the trunk , on the passenger side , behind the trunk liner ( there is an access hole )
On a 2002 Mercury Sable : The fuel pump shut off switch ( inertia switch ) that has the reset button on top : ( is located in the trunk , on the passenger side of the trunk , behind the trunk liner , there is an access hole )
Yes , the fuel pump shut off ( inertia ) switch is behind the access panel on the right side of the cargo area in your 2002 Mercury Sable wagon
Answer"Relay switch" is rather ambiguous...Fuel pump electrical relay / circuit protectionEmergency fuel shutoff / inertia switchBoth are covered in the "Related Questions" below...
For a 1997 Mercury Sable : Yes , on the sedan open the trunk and behind the trunk liner on the passenger side ( there is an access hole ) there is a fuel pump inertia switch ( shut off switch ) that has a reset button on top of the switch If the button has popped UP then no power is going to the electric fuel pump
GM vehicles do not have a fuel shut off/inertia switch