diff --git a/sketch/obd2_gauge/obd2_gauge.ino b/sketch/obd2_gauge/obd2_gauge.ino
index f454abd..ac198f9 100644
--- a/sketch/obd2_gauge/obd2_gauge.ino
+++ b/sketch/obd2_gauge/obd2_gauge.ino
@@ -300,6 +300,13 @@ recent_client_addr : {0x00,0x00,0x00,0x00,0x00,0x00} array of bytes[6]
   while (!foundOBD2) {  //not success try scan and connect another OBD2
     scanBTdevice();
     autoDim();  //auto backlight handle
+
+    if (digitalRead(SELECTOR_PIN) == LOW) {  //button pressed
+      delay(50);
+      if (digitalRead(SELECTOR_PIN) == LOW) {
+        configMenu();
+      }
+    }
   }
 
   //Initialize ELM327
@@ -338,11 +345,13 @@ void loop() {
   updateBacklightFade();  // non-blocking smooth backlight fade handler
   handleArcAlarmFlash();  // non-blocking arc alarm flash handler (blinks when in TFT_RED)
 
-  // SCAN TOUCHSCREEN
+  // SCAN TOUCHSCREEN & BUTTON
   // - Single click on a quadrant: toggles between clock (arc) and number
   // - Double click on a quadrant: puts that instrument in full screen (or exits full screen)
+  // - Long press (> 1s) on screen OR holding selector button: opens configuration menu
   uint16_t touchX = 0, touchY = 0;
   bool isTouched = getTouch(&touchX, &touchY);
+  bool btnPressed = (digitalRead(SELECTOR_PIN) == LOW);
 
   static bool isTouching = false;
   static uint32_t touchStartTime = 0;
@@ -350,19 +359,31 @@ void loop() {
   static uint8_t clickCount = 0;
   static uint32_t firstClickTime = 0;
   static int8_t clickQuadrant = -1;
+  static bool longPressHandled = false;
 
-  if (isTouched) {
+  if (isTouched || btnPressed) {
     if (!isTouching) {
       isTouching = true;
       touchStartTime = millis();
       lastTouchX = touchX;
       lastTouchY = touchY;
+      longPressHandled = false;
+    } else if (!longPressHandled && (millis() - touchStartTime > 1000)) {
+      // Long press (> 1s) or button hold: Open Config Menu!
+      longPressHandled = true;
+      clickCount = 0;
+      ledcWriteTone(buzzerChannel, 3500);
+      delay(40);
+      ledcWriteTone(buzzerChannel, 0);
+      configMenu();
+      if (foundOBD2) initScreen();
+      isTouching = false;
     }
   } else {
-    // Touch released
+    // Touch / button released
     if (isTouching) {
       isTouching = false;
-      if (millis() - touchStartTime >= 30) {
+      if (!longPressHandled && (millis() - touchStartTime >= 30)) {
         // Valid tap detected! Determine quadrant
         int quad = (lastTouchX < 160) ? ((lastTouchY < 120) ? 0 : 2) : ((lastTouchY < 120) ? 1 : 3);