diff --git a/src/ems.cpp b/src/ems.cpp
index 026633dbc..11f1e4fbc 100644
--- a/src/ems.cpp
+++ b/src/ems.cpp
@@ -49,7 +49,7 @@ const uint8_t ems_crc_table[] = {0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,
                                  0xF9, 0xFB, 0xFD, 0xFF, 0xF1, 0xF3, 0xF5, 0xF7, 0xE9, 0xEB, 0xED, 0xEF, 0xE1, 0xE3, 0xE5, 0xE7};
 
 const uint8_t  TX_WRITE_TIMEOUT_COUNT = 2;       // 3 retries before timeout
-const uint32_t EMS_BUS_TIMEOUT        = 15000;   // timeout in ms before recognizing the ems bus is offline (15 seconds)
+const uint32_t EMS_BUS_TIMEOUT        = 45000;   // timeout in ms before recognizing the ems bus is offline (45 seconds)
 const uint32_t EMS_POLL_TIMEOUT       = 5000000; // timeout in microseconds before recognizing the ems bus is offline (5 seconds)
 
 /*