[Roach_]

Try this:

pawn Код:

COMMAND:repair(playerid, params[])
{
    // Send the command to all admins so they can see it
    SendAdminText(playerid, "/repair", params);

    // Check if the player has logged in
    if (!APlayerData[playerid][LoggedIn]) return 0;
    // Check if the player's admin-level is at least 1
    if(APlayerData[playerid][PlayerLevel] < 1) return 0;
    // Check if the player is inside a vehicle
    if(!IsPlayerInAnyVehicle(playerid))
        return SendClientMessage(playerid, 0xFF0000FF, "You are not in a vehicle!"); // Let the player know he's not inside a vehicle and let the server know that this was a valid command
    // Fully repair the vehicle (damage value and bodywork)
    SetTimerEx("Repair_CMD", 15000, false, "i", playerid);
    SendClientMessage(playerid, 0xFF9900AA, "Assistance called . Your vehicle will be repaired in 15 minutes");
//  RepairVehicle(GetPlayerVehicleID(playerid));
    // Send the player a message to inform him that his vehicle has been repaired
//  SendClientMessage(playerid, 0x00FF00FF, "Your vehicle has been successfully repaired!");

    // Let the server know that this was a valid command
    return 1;
}

public Repair_CMD(playerid)
{
    RepairVehicle(GetPlayerVehicleID(playerid));
    // Send the player a message to inform him that his vehicle has been repaired
    SendClientMessage(playerid, 0x00FF00FF, "Your vehicle has been successfully repaired!");
    return 1;
}

EDIT: And change "forward Repair_CMD();" to "forward Repair_CMD(playerid);"