diff --git a/emulator/obd2_emulator.py b/emulator/obd2_emulator.py
index 8010000..6a3f4ec 100755
--- a/emulator/obd2_emulator.py
+++ b/emulator/obd2_emulator.py
@@ -63,8 +63,8 @@ class VehicleState:
                 self.speed = 15.0 + 160.0 * ((self.rpm - 800.0) / 5200.0)
                 if self.speed < 0:
                     self.speed = 0.0
-                # Coolant temp rises slightly with engine load (88°C -> 102°C, showing warn RED past 100°C)
-                self.coolant_temp = 88.0 + 14.0 * ((self.rpm - 800.0) / 5200.0)
+                # Coolant temp rises with engine load (88°C -> 108°C: Green <98, Yellow 98-105, Red >=106)
+                self.coolant_temp = 88.0 + 20.0 * ((self.rpm - 800.0) / 5200.0)
                 self.oil_temp = 90.0 + 12.0 * ((self.rpm - 800.0) / 5200.0)
                 self.trans_temp = 82.0 + 1.0 * math.cos(t * 0.09)
                 self.pcm_volt = 14.2 + 0.15 * math.sin(t * 0.5)
diff --git a/sketch/obd2_gauge/meter.h b/sketch/obd2_gauge/meter.h
index 38a6a32..dc3ab99 100644
--- a/sketch/obd2_gauge/meter.h
+++ b/sketch/obd2_gauge/meter.h
@@ -695,9 +695,15 @@ inline void drawQuadrantDividers() {
 }
 
 // Determine display color for meter:
+// ECT (PID 0): VERDE (< 98), AMARILLO (98-105), ROJO (>= 106)
 // RPM (PID 1): VERDE (< 3500), AMARILLO (3500-5000), ROJO (5000-6000)
 // Otros instrumentos: VERDE / ROJO (según umbral de advertencia)
 inline uint16_t getMeterColor(uint8_t pidIdx, float data, int warn) {
+  if (pidIdx == 0) { // 0 = Temperatura ECT (PID 0105)
+    if (data >= 106.0f) return TFT_RED;
+    if (data >= 98.0f) return TFT_YELLOW;
+    return TFT_GREEN;
+  }
   if (pidIdx == 1) { // 1 = RPM (PID 010C)
     if (data >= 5000.0f) return TFT_RED;
     if (data >= 3500.0f) return TFT_YELLOW;
diff --git a/sketch/obd2_gauge/obd2_gauge.ino b/sketch/obd2_gauge/obd2_gauge.ino
index e99b482..db0ab14 100644
--- a/sketch/obd2_gauge/obd2_gauge.ino
+++ b/sketch/obd2_gauge/obd2_gauge.ino
@@ -83,14 +83,14 @@ warn = default warning value
 */
 const String pidConfig[4][9] = {
   //[pid][data]
-  { "Temperatura", "`C",   "0105", "1", "0", "120",  "2", "0", "100" }, //0 = Temperatura (0105)
+  { "Temperatura", "`C",   "0105", "1", "0", "120",  "2", "0", "106" }, //0 = Temperatura (0105)
   { "RPM",         "rpm",  "010C", "3", "0", "6000", "0", "0", "5000" }, //1 = RPM (010C)
   { "Voltaje",      "V",    "0142", "4", "0", "16",   "1", "1", "15" },   //2 = Voltaje (0142)
   { "Velocidad",    "km/h", "010D", "7", "0", "180",  "0", "0", "130" }   //3 = Velocidad (010D)
 };
 
 //hold warning value
-String warningValue[4] = { "100", "5000", "15", "130" };
+String warningValue[4] = { "106", "5000", "15", "130" };
 
 /*
 0 - Refrigerante