[KDS 2.0 Additional Functions] Guide for Repeated ABS/ESP/EBD Variant Coding Failures on CCU-Equipped Vehicles

✅ Issue Overview

• Applicable Vehicles: Vehicles equipped with a gateway (CCU) on which ABS/ESP Variant Coding continues to fail even though all test conditions have been met
• Symptom: ABS/ESP Variant Coding repeatedly fails even though all test conditions have been met

• 

• Characteristics
  • This may occur after the ABS/ESP control unit is replaced with a new unit having the same part number as the original control unit.
  • This may occur if the vehicle's CCU incorrectly recognizes the GPS navigation-based date information.
  • A negative response may occur due to an expired certificate or a time mismatch.

🔍 Cause Analysis

• Gateway (CCU) Communication and Authentication Logic Issue
  • Certificate validation may fail if the vehicle's navigation-based GPS location/date is recognized as being later than the current date.
• Security Certificate Status
  • The validity periods of the certificate and CRL must be checked.
• Environmental Conditions
  • When work is performed indoors, GPS information may not update, increasing the possibility of a Variant Coding failure.

🛠 Corrective Actions

1. On-Site Actions

• Log In Again and Retry: If the security certificate has expired, log in again to renew the security certificate.
• Update the Vehicle's GPS Information: Move the vehicle outdoors and allow the GPS information and time zone to update to the local time.
• Check the Tablet Time Zone: Refer to https://support-kia.gitauto.com/hc/en-gb/articles/54047285143705 and set the tablet to the local time zone.

2. Technical Assistance Request (Contact the Customer Support Team for This Action.)

• Inspect the Security Certificate: Delete the certificate (.bat) file from the nvci/xml/hy path, and then redeploy it.