[The_Moddler]

pawn Код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(newkeys & KEY_SUBMISSION)
    {
        RepairVehicle(GetPlayerVehicleID(playerid));
        SendClientMessage(playerid, 0xFFFFFFFF, "Your vehicle has been successfully repaired!");
    }
    return 1;
}

That will work if you press number 2, the one that is above the key 'W'.