[Grim_]

There is, if you want to keep them how they are, do the following (here, I will turn off the engines):

pawn Код:

new engine, lights, alarm, doors, bonnet, boot, objective;
GetVehicleParamsEx( vehicleid, engine, lights, alarm, doors, bonnet, boot, objective );
SetVehicleParamsEx( vehicleid, VEHICLE_PARAMS_OFF, lights, alarm, doors, bonnet, boot, objective );

It only changes the value of the engine parameter and sets the others how they were before retrieving the values.