1. Symptom:
Encountering error code 4001 when logging in or trying to access ECU Upgrade or S/W Management.
2. Cause:
The error message may occur if the diagnostic equipment lacks or has a non-current security certificate required for secure vehicle communication
3. Solutions:
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Background Download of Security Certificate: Since the security certificate is downloaded in the background when you log in again, please quit the program, restart the diagnostic tool, log in while Wi-Fi is connected, and check again after a few minutes. (The security certificate download is not visible.)
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If the same issue occurs after re-logging in, please try re-logging in after connecting to an unsecured network like a hotspot.
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If an aftermarket device (such as a black box) is installed, please try removing it and re-trying a feature of S/W Management.
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Please try removing the vehicle battery negative terminal (for more than 10 minutes) and re-trying.
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If the issue persists even after trying the above methods, please contact customer service.
Call Center
USA
KIA 888-542-4371
HYUNDAI 888-437-0308
GENESIS 833-681-3926
CANADA
KIA 888-641-4244
HYUNDAI 888-641-4243
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