diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 25e0f3897e79d83945d80baa668f298d15680d93..abcfea50f8b4d940f1f2f29e6f0e910a2d1c756f 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -305,8 +305,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 
 //===========================================================================
diff --git a/Marlin/configurator/config/Configuration.h b/Marlin/configurator/config/Configuration.h
index 8252d9654db9520df62ce0ccc5536a215cd9637f..927a89046f59a3f101955256cc334bd3a8653490 100644
--- a/Marlin/configurator/config/Configuration.h
+++ b/Marlin/configurator/config/Configuration.h
@@ -305,9 +305,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/Felix/Configuration.h b/Marlin/example_configurations/Felix/Configuration.h
index b0e74391e3073064de97d82f4d40b6a4fad680c6..0bdc42f977a9a731c6409bd93df5ba37072a8e24 100644
--- a/Marlin/example_configurations/Felix/Configuration.h
+++ b/Marlin/example_configurations/Felix/Configuration.h
@@ -271,9 +271,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/Felix/Configuration_DUAL.h b/Marlin/example_configurations/Felix/Configuration_DUAL.h
index eddffd06f569c5c80f389d2c8f7055428f20ac36..478685818401a3e1884ee2c503207fbc5dd7ecbe 100644
--- a/Marlin/example_configurations/Felix/Configuration_DUAL.h
+++ b/Marlin/example_configurations/Felix/Configuration_DUAL.h
@@ -271,9 +271,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/Hephestos/Configuration.h b/Marlin/example_configurations/Hephestos/Configuration.h
index e0ba6e998ef565102ff7a2f34461d111b17eb081..cf2337407babf38679a205f1157872d7de32c3f7 100644
--- a/Marlin/example_configurations/Hephestos/Configuration.h
+++ b/Marlin/example_configurations/Hephestos/Configuration.h
@@ -292,9 +292,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/K8200/Configuration.h b/Marlin/example_configurations/K8200/Configuration.h
index 1b6bbd4eaa0d6acd86a4bcab38b0d64ad17db6ba..75ccf4f7407a39fecee0103961bf79780d1ac1c6 100644
--- a/Marlin/example_configurations/K8200/Configuration.h
+++ b/Marlin/example_configurations/K8200/Configuration.h
@@ -321,9 +321,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/SCARA/Configuration.h b/Marlin/example_configurations/SCARA/Configuration.h
index 2fcb7da40dc42df9d97c33fdc58e352f38679744..44b8af94de9b40cead8e3f93539d1a2837f3d0a5 100644
--- a/Marlin/example_configurations/SCARA/Configuration.h
+++ b/Marlin/example_configurations/SCARA/Configuration.h
@@ -323,9 +323,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/WITBOX/Configuration.h b/Marlin/example_configurations/WITBOX/Configuration.h
index 189903dec078432b8ae9182d472c41c3d5192fe9..dc356f81da917fbef801cb19b81ad09788eb28ed 100644
--- a/Marlin/example_configurations/WITBOX/Configuration.h
+++ b/Marlin/example_configurations/WITBOX/Configuration.h
@@ -291,9 +291,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/delta/generic/Configuration.h b/Marlin/example_configurations/delta/generic/Configuration.h
index b4ca29c836a9f9b1cd58eeb0b2e2e7302ff85d6e..d4028c067593558d5d7d99325109f48a41903d4f 100644
--- a/Marlin/example_configurations/delta/generic/Configuration.h
+++ b/Marlin/example_configurations/delta/generic/Configuration.h
@@ -321,9 +321,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration.h b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
index d0fda1e06fe66950d3d150977ef396405bb232c6..cd0a34ec92f3d402487483ad2c415a69b0bca0c4 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
@@ -321,9 +321,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/makibox/Configuration.h b/Marlin/example_configurations/makibox/Configuration.h
index 27a73231a1e9ee67d25f73ff522cb049be84d6c0..237ea7d38a02950bba54af90f7a5ff13370aede9 100644
--- a/Marlin/example_configurations/makibox/Configuration.h
+++ b/Marlin/example_configurations/makibox/Configuration.h
@@ -291,9 +291,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration.h b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
index 9332513ba37d7d4cc0d2a65bf9a2ec68d8dbb51b..5e07e4790a892e81d1a6ea1bb80089a5afd9ef44 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
@@ -293,9 +293,8 @@ your extruder heater takes 2 minutes to hit the target on heating.
 // uncomment the 2 defines below:
 
 // Parameters for the bed heater
-//#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
-//#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
-
+#define THERMAL_RUNAWAY_PROTECTION_BED_PERIOD 20 //in seconds
+#define THERMAL_RUNAWAY_PROTECTION_BED_HYSTERESIS 2 // in degree Celsius
 
 //===========================================================================
 //============================= Mechanical Settings =========================