2005 fx infiniti shaking and shutting off at slow downs

SOURCE: Infiniti FX 35 stiff ride

The FX is a bouncy car, but it's necessary to accommodate it's good performance. You can try some aftermarket air shocks, or check into different tires. That should help.

SOURCE: Infiniti FX 35 stiff ride

they are stif suspensions not much to do to them.

SOURCE: 2005 Infiniti fx 35

a good 12 volt with trikle charge,it take a bit longer
to recharge but a more better way to recharge it

SOURCE: Service engine soon light

in your manual inside your glove box it will tell you how to restet the service due soon message, or the mechanic should do it when he/she services your car.

SOURCE: 2005 infiniti G35 coupe how to reset the service

You cannot reset the light, some people think that by disconnecting the battery you reset the ECM, as that may work on Fords or Chevy, it doesn't work on Infinitis. If the engine light came on because of a loose or missing gas cap, then once the cap is tightened past three clicks, the light will go off on its own. You are going to have to take it to either AutoZone, a dealership or to an independent shop and have the Consult II diagnostic computer retrieve and clear the stored codes. AutoZone does this for free. That's where I suggest you start.