diff --git a/Board320_240.cpp b/Board320_240.cpp
index 0c1eda6..0782972 100644
--- a/Board320_240.cpp
+++ b/Board320_240.cpp
@@ -1499,8 +1499,8 @@ void Board320_240::mainLoop() {
     setBrightness((liveData->settings.lcdBrightness == 0) ? 100 : liveData->settings.lcdBrightness);
   }
 
-  // Go to sleep when car is off for more than 10s and not charging
-  if (liveData->params.currentTime - liveData->params.lastIgnitionOnTime > 10 && liveData->params.currentTime - liveData->params.lastIgnitionOnTime < MONTH_SEC
+  // Go to sleep when car is off for more than 30s and not charging (AC charger is disabled for few seconds when ignition is turned off)
+  if (liveData->params.currentTime - liveData->params.lastIgnitionOnTime > 30 && liveData->params.currentTime - liveData->params.lastIgnitionOnTime < MONTH_SEC
       && !liveData->params.chargingOn
       && liveData->params.lastIgnitionOnTime != 0
       && liveData->settings.sleepModeEnabled)
diff --git a/CarHyundaiIoniq.cpp b/CarHyundaiIoniq.cpp
index 8db4c76..d2fad5e 100644
--- a/CarHyundaiIoniq.cpp
+++ b/CarHyundaiIoniq.cpp
@@ -185,6 +185,9 @@ void CarHyundaiIoniq::parseRowMerged() {
 
       tempByte = liveData->hexToDecFromResponse(22, 24, 1, false);
       liveData->params.chargingOn = (bitRead(tempByte, 5) == 1 || bitRead(tempByte, 6) == 1); // bit 5 = AC; bit 6 = DC
+      if(liveData->params.chargingOn) {
+        liveData->params.lastChargingOnTime = liveData->params.currentTime;
+      }
 
       // This is more accurate than min/max from BMS. It's required to detect kona/eniro cold gates (min 15C is needed > 43kW charging, min 25C is needed > 58kW charging)
       liveData->params.batInletC = liveData->hexToDecFromResponse(48, 50, 1, true);
diff --git a/CarKiaEniro.cpp b/CarKiaEniro.cpp
index d33a168..d99e49d 100644
--- a/CarKiaEniro.cpp
+++ b/CarKiaEniro.cpp
@@ -237,6 +237,9 @@ void CarKiaEniro::parseRowMerged() {
       // liveData->params.chargingOn = (bitRead(tempByte, 2) == 1);
       tempByte = liveData->hexToDecFromResponse(24, 26, 1, false);
       liveData->params.chargingOn = (bitRead(tempByte, 5) == 1 || bitRead(tempByte, 6) == 1); // bit 5 = AC; bit 6 = DC
+      if(liveData->params.chargingOn) {
+        liveData->params.lastChargingOnTime = liveData->params.currentTime;
+      }
    
       // This is more accurate than min/max from BMS. It's required to detect kona/eniro cold gates (min 15C is needed > 43kW charging, min 25C is needed > 58kW charging)
       liveData->params.batMinC = liveData->params.batMaxC = liveData->params.batModuleTempC[0];