diff --git a/Common/include/CConfig.hpp b/Common/include/CConfig.hpp
index 0c9d4d28b18..52d9d462bf4 100644
--- a/Common/include/CConfig.hpp
+++ b/Common/include/CConfig.hpp
@@ -2694,7 +2694,12 @@ class CConfig {
    * \brief Set the number of multigrid levels.
    * \param[in] val_nMGLevels - Index of the mesh were the CFL is applied
    */
-  void SetMGLevels(unsigned short val_nMGLevels) { nMGLevels = val_nMGLevels; }
+  void SetMGLevels(unsigned short val_nMGLevels) {
+    nMGLevels = val_nMGLevels;
+    if (MGCycle == FULLMG_CYCLE) {
+      SetFinestMesh(val_nMGLevels);
+    }
+  }
 
   /*!
    * \brief Get the index of the finest grid.
diff --git a/SU2_CFD/include/integration/CIntegration.hpp b/SU2_CFD/include/integration/CIntegration.hpp
index 136d4c9ad59..fd01e565888 100644
--- a/SU2_CFD/include/integration/CIntegration.hpp
+++ b/SU2_CFD/include/integration/CIntegration.hpp
@@ -49,7 +49,7 @@ class CIntegration {
   size;          /*!< \brief MPI Size. */
   bool Convergence,   /*!< \brief To indicate if the flow solver (direct, adjoint, or linearized) has converged or not. */
   Convergence_FSI,    /*!< \brief To indicate if the FSI problem has converged or not. */
-  Convergence_FullMG;  /*!< \brief Initial value of the residual to evaluate the convergence level. */
+  Convergence_FullMG;  /*!< \brief To indicate if the full multigrid has converged or not. */
 
   /*!
    * \brief Do the space integration of the numerical system.
diff --git a/SU2_CFD/include/solvers/CFVMFlowSolverBase.inl b/SU2_CFD/include/solvers/CFVMFlowSolverBase.inl
index 7dc8c512f44..0860f66e88e 100644
--- a/SU2_CFD/include/solvers/CFVMFlowSolverBase.inl
+++ b/SU2_CFD/include/solvers/CFVMFlowSolverBase.inl
@@ -2516,10 +2516,8 @@ void CFVMFlowSolverBase<V, FlowRegime>::Friction_Forces(const CGeometry* geometr
 
     for (iVertex = 0; iVertex < geometry->nVertex[iMarker]; iVertex++) {
       iPoint = geometry->vertex[iMarker][iVertex]->GetNode();
-      iPointNormal = geometry->vertex[iMarker][iVertex]->GetNormal_Neighbor();
 
       Coord = geometry->nodes->GetCoord(iPoint);
-      Coord_Normal = geometry->nodes->GetCoord(iPointNormal);
 
       Normal = geometry->vertex[iMarker][iVertex]->GetNormal();
 
@@ -2585,13 +2583,15 @@ void CFVMFlowSolverBase<V, FlowRegime>::Friction_Forces(const CGeometry* geometr
         CSkinFriction[iMarker](iVertex,iDim) = TauTangent[iDim] * factorFric;
       }
 
-      WallDistMod = GeometryToolbox::Distance(nDim, Coord, Coord_Normal);
-
       /*--- Compute non-dimensional velocity and y+ ---*/
 
       FrictionVel = sqrt(fabs(WallShearStress[iMarker][iVertex]) / Density);
-
-      if (!wallfunctions) {
+      
+      if (!wallfunctions && (MGLevel == MESH_0 || geometry->nodes->GetDomain(iPoint))) {
+        // for CMultiGridGeometry, the normal neighbor of halo nodes in not set
+        iPointNormal = geometry->vertex[iMarker][iVertex]->GetNormal_Neighbor();
+        Coord_Normal = geometry->nodes->GetCoord(iPointNormal);
+        WallDistMod = GeometryToolbox::Distance(nDim, Coord, Coord_Normal);
         YPlus[iMarker][iVertex] = WallDistMod * FrictionVel / (Viscosity / Density);
       }
 
@@ -2628,7 +2628,7 @@ void CFVMFlowSolverBase<V, FlowRegime>::Friction_Forces(const CGeometry* geometr
         HeatFlux[iMarker][iVertex] = thermal_conductivity_tr*dTn + thermal_conductivity_ve*dTven;
       }
 
-      /*--- Note that y+, and heat are computed at the
+      /*--- Note that heat is computed at the
        halo cells (for visualization purposes), but not the forces ---*/
 
       if ((geometry->nodes->GetDomain(iPoint)) && (Monitoring == YES)) {
diff --git a/SU2_CFD/src/solvers/CTurbSSTSolver.cpp b/SU2_CFD/src/solvers/CTurbSSTSolver.cpp
index e7b84ad7ead..67e8a172dcb 100644
--- a/SU2_CFD/src/solvers/CTurbSSTSolver.cpp
+++ b/SU2_CFD/src/solvers/CTurbSSTSolver.cpp
@@ -58,7 +58,7 @@ CTurbSSTSolver::CTurbSSTSolver(CGeometry *geometry, CConfig *config, unsigned sh
 
   /*--- Single grid simulation ---*/
 
-  if (iMesh == MESH_0) {
+  if (iMesh == MESH_0 || config->GetMGCycle() == FULLMG_CYCLE) {
 
     /*--- Define some auxiliary vector related with the residual ---*/