diff --git a/lua/ge/extensions/core/input/actions/ESBtnBoxBindings.json b/lua/ge/extensions/core/input/actions/ESBtnBoxBindings.json
index 83564bb..c2ea334 100644
--- a/lua/ge/extensions/core/input/actions/ESBtnBoxBindings.json
+++ b/lua/ge/extensions/core/input/actions/ESBtnBoxBindings.json
@@ -71,5 +71,29 @@
         "onDown": "extensions.use('ESBtnBoxDrivetrain').toggleLowFour()",
         "title": "ESBtnBox Bindings: Toggle Low 4",
         "desc": "Set the range box to low four"
+    },
+    "bb_turn_front_diff_lock": {
+        "cat": "vehicle",
+        "order": 54337,
+        "ctx": "vlua",
+        "onDown": "extensions.use('ESBtnBoxDrivetrain').toggleFrontDiffLock()",
+        "title": "ESBtnBox Bindings: Toggle Front Diff Lock",
+        "desc": "Lock the front diff"
+    },
+    "bb_turn_rear_diff_lock": {
+        "cat": "vehicle",
+        "order": 54338,
+        "ctx": "vlua",
+        "onDown": "extensions.use('ESBtnBoxDrivetrain').toggleRearDiffLock()",
+        "title": "ESBtnBox Bindings: Toggle Rear Diff Lock",
+        "desc": "Lock the rear diff"
+    },
+    "bb_turn_both_diff_locks": {
+        "cat": "vehicle",
+        "order": 54339,
+        "ctx": "vlua",
+        "onDown": "extensions.use('ESBtnBoxDrivetrain').toggleBothDiffLock()",
+        "title": "ESBtnBox Bindings: Toggle Both Diff Locks",
+        "desc": "Lock front and rear diffs"
     }
 }
\ No newline at end of file
diff --git a/lua/vehicle/extensions/ESBtnBoxDrivetrain.lua b/lua/vehicle/extensions/ESBtnBoxDrivetrain.lua
index f145856..7352153 100644
--- a/lua/vehicle/extensions/ESBtnBoxDrivetrain.lua
+++ b/lua/vehicle/extensions/ESBtnBoxDrivetrain.lua
@@ -9,7 +9,8 @@ local rangeMode4lo = "4lo"
 local rangeMode2hi = "2hi"
 local curRangeMode = rangeMode2hi
 
-local function changeMode(tfc, mode)
+-- changeMode changes the instance of transfercaseControl `tfc` to the mode `mode`
+local function changeTransfercaseMode(tfc, mode)
   if curRangeMode == mode then
     mode = rangeMode2hi
   end
@@ -25,7 +26,7 @@ local function toggleHighFour()
     return
   end
 
-  changeMode(transferCase, rangeMode4hi)
+  changeTransfercaseMode(transferCase, rangeMode4hi)
 end
 
 local function toggleLowFour()
@@ -36,10 +37,104 @@ local function toggleLowFour()
     return
   end
 
-  changeMode(transferCase, rangeMode4lo)
+  changeTransfercaseMode(transferCase, rangeMode4lo)
 end
 
 M.toggleHighFour = toggleHighFour
 M.toggleLowFour = toggleLowFour
 
+----------------------------------------------------------------------------------------------------
+-- Locking Diffs
+----------------------------------------------------------------------------------------------------
+
+local lockedMode = "locked"
+local openMode = "open"
+local frontDiff = {
+  name = "differential_F",
+  locked = false,
+}
+local rearDiff = {
+  name = "differential_R",
+  locked = false,
+}
+
+local function diffNotFoundMsg(diffName)
+  guihooks.trigger('toastrMsg', {
+      type = "error",
+      title = "404 Diff",
+      msg = "No diff named " .. diffName,
+      config = {timeOut = 5000}
+  })
+end
+
+local function getDiff(diffObj)
+  local diff = powertrain.getDevice(diffObj.name)
+  if diff == nil or next(diff) == nil then
+    diffNotFoundMsg(diffObj.name)
+    return {}
+  end
+
+  return diff
+end
+
+local function openDiff(diffObj)
+  print("Opening diff")
+  local diff = getDiff(diffObj)
+  if next(diff) == nil then
+    return {}
+  end
+
+  powertrain.setDeviceMode(diff.name, openMode)
+  diffObj.locked = false
+end
+
+local function lockDiff(diffObj)
+  print("Locking diff")
+  local diff = getDiff(diffObj)
+  if next(diff) == nil then
+    return
+  end
+  powertrain.setDeviceMode(diff.name, lockedMode)
+  diffObj.locked = true
+end
+
+
+local function toggleDiff(diffObj)
+  if diffObj.locked then
+    openDiff(diffObj)
+  else
+    lockDiff(diffObj)
+  end
+end
+
+local function toggleFrontDiffLock() 
+  toggleDiff(frontDiff)
+end
+
+local function toggleRearDiffLock() 
+  toggleDiff(rearDiff)
+end
+
+local function toggleBothDiffLock()
+  toggleFrontDiffLock()
+  toggleRearDiffLock()
+end
+
+M.toggleFrontDiffLock = toggleFrontDiffLock
+M.toggleRearDiffLock = toggleRearDiffLock
+M.toggleBothDiffLock = toggleBothDiffLock
+
+local function onReset()
+  -- We need to set the things to the state they were in
+  for _, diffObj in ipairs({frontDiff, rearDiff}) do
+    if diffObj.locked then
+      lockDiff(diffObj)
+    else
+      openDiff(diffObj)
+    end
+  end
+end
+
+M.onReset = onReset
+
 return M
\ No newline at end of file