diff --git a/firmware/esp32/overland-controller/config.h b/firmware/esp32/overland-controller/config.h
index 8bd7398..724eda2 100644
--- a/firmware/esp32/overland-controller/config.h
+++ b/firmware/esp32/overland-controller/config.h
@@ -30,3 +30,6 @@
 
 // Bring-up safety: serve a tiny root page to avoid AP client/browser heap crashes.
 #define LILYGO_BRINGUP_MINIMAL_WEB 1
+
+// LilyGO bring-up isolation: disable BLE/BMS to test WiFi AP stability.
+#define BMS_COMPILE_ENABLED 0
diff --git a/firmware/esp32/overland-controller/overland-controller.ino b/firmware/esp32/overland-controller/overland-controller.ino
index fcf188d..a0cf4f0 100644
--- a/firmware/esp32/overland-controller/overland-controller.ino
+++ b/firmware/esp32/overland-controller/overland-controller.ino
@@ -4097,7 +4097,11 @@ void setup() {
 
     initRelays();
     initSensors();
+#if BMS_COMPILE_ENABLED
     initBms();
+#else
+    Serial.println("BMS/BLE disabled for LilyGO bring-up test");
+#endif
 
     loadWifiConfig();
     loadApConfig();
@@ -4231,7 +4235,9 @@ void loop() {
     server.handleClient();
     maintainStaWifi();
     handleDebugSerial();
+#if BMS_COMPILE_ENABLED
     updateBms();
+#endif
     updateAlarms();
 #if DASHBOARD_UART_ENABLED
     pollDashboardUart();