[CutX]

well well ^^

just use else if
instead of

if(strcm....
if(strcm...
and so on

do

if(strcm...
else if(str....

and at the end

else Sendcl..... Invalid option

see, i used this to test it and it works.
You setup the control structure for the options in an invalid way


the code:

pawn Код:

YCMD:car(playerid, params[], help)
{
    new Option[32];//isn't that too much? 6 would do the trick :) well, it's your code
    new vid = GetPlayerVehicleID(playerid);
    if(sscanf(params, "s[32]", Option)) return SendClientMessage(playerid, -1, "Usage: /car [Engine/Lights/Hood/Trunk/Speedo]");
    new eengine,llights,aalarm,ddoors,bbonnet,bboot,oobjective;
    GetVehicleParamsEx(vid,eengine,llights,aalarm,ddoors,bbonnet,bboot,oobjective);
    if(strcmp(Option, "engine", true) == 0)
    {
        if(IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {

            if(eengine != VEHICLE_PARAMS_ON)
            {
                new TextString[128];
                SetVehicleParamsEx(vid,VEHICLE_PARAMS_ON,llights,aalarm,ddoors,bbonnet,bboot,oobjective);
                format(TextString, sizeof TextString,"* %s turns the vehicle key, attempting to start the vehicle.","b");
                SendClientMessage(playerid,-1,TextString);
            }
            else
            {
                SetVehicleParamsEx(vid,VEHICLE_PARAMS_OFF,llights,aalarm,ddoors,bbonnet,bboot,oobjective);
                new TextString[128];
                format(TextString, sizeof TextString,"* %s turns the vehicle key, Turning the vehicle off.","b");
                SendClientMessage(playerid,-1,TextString);
            }
        }
    }
    else if(strcmp(Option, "lights", true) == 0)
    {
        if(IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
            if(llights != VEHICLE_PARAMS_ON)
            {

                SetVehicleParamsEx(vid,eengine,VEHICLE_PARAMS_ON,aalarm,ddoors,bbonnet,bboot,oobjective);
            }
            else
            {

                SetVehicleParamsEx(vid,eengine,VEHICLE_PARAMS_OFF,aalarm,ddoors,bbonnet,bboot,oobjective);
            }
        }
    }
    else if(strcmp(Option, "trunk", true) == 0)
    {
        if(IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
            if(bboot != VEHICLE_PARAMS_ON)
            {


                SetVehicleParamsEx(vid,eengine,llights,aalarm,ddoors,bbonnet,VEHICLE_PARAMS_ON,oobjective);
            }
            else
            {


                SetVehicleParamsEx(vid,eengine,llights,aalarm,ddoors,bbonnet,VEHICLE_PARAMS_OFF,oobjective);
            }
        }
    }
    else if(strcmp(Option, "hood", true) == 0)
    {
        if(IsPlayerInAnyVehicle(playerid) && GetPlayerState(playerid) == PLAYER_STATE_DRIVER)
        {
            if(bbonnet != VEHICLE_PARAMS_ON)
            {

                SetVehicleParamsEx(vid,eengine,llights,aalarm,ddoors,VEHICLE_PARAMS_ON,bboot,oobjective);
            }
            else
            {

                SetVehicleParamsEx(vid,eengine,llights,aalarm,ddoors,VEHICLE_PARAMS_OFF,bboot,oobjective);
            }
        }
    }
    else SendClientMessage(playerid,-1,"INVALID Option");
    return 1;
}

(it's basically your code, just slightly modifyed the parts with these player vars and functions i didn't have ofc.)