On a 1999 Mercury Grand Marquis : It CAN BE equipped with air suspension ( if it is there will be a rocker style shut off switch for the compressor located in the trunk , on the drivers side of the trunk , there will be a label ) * anytime any of the wheels is lifted off the ground you want to shut the switch OFF
The 1999 Mercury Grand Marquis air suspension relay switch can be found on the firewall in the engine compartment. The air suspension relay switch will be on the passenger side of the firewall.
It is usually under the air filter.
I have a 1998 ford grand Marquis- and the problem is the air suspension light stays on- how to fix this problem
In the Power Distribution Box in the engine compartment ( the P D BOX is " live " ) Relay # 303 ( one of the large relays ) is the air suspension relay
According to the 2002 Mercury Grand Marquis Owner Guide : The ON / OFF rocker switch for the rear air suspension is located : ( in the trunk , on the drivers side of the trunk , the Owner Guide shows that there is a label next to the switch )
where the starter located on a 1997 grand marquis
A 2000 Grand Marquis does not have struts, it uses a conventional shock/spring type suspension.
It should be located in the Trunk near the right side. If it's not there, it's probably located under the hood with the other relays. hth
I HAD THE SAME QUESTION AND HERES A LINK TO THE ANSWER http://www.suncoreindustries.com/instructions/40F-30-R+HD.pdf
THE AIR SUSPENSION OFF SWITCH IS USUALLY LOCATED IN THE TRUNK ON THE RIGHT HAND SIDE. BE SURE NOT TO HIT THE SWITCH ON THE LEFT HAND SIDE THAT IS THE FUEL SHUT OFF SWITCH.
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