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DTC › SC4 SC4 / 0005B4

MC54: Card re-authentication / update not possible in smart card slot 1. MC72: Card re-authentication / update not possible in smart card slot 2.

â–¶ How to fix

MC54: Measures: – Request card ejection. – Check tachograph card. – Clean tachograph card. – Clean the contacts of the card slot. Note: If, as before, no communication with the card is possible when the card is ejected, a printout of the activities allocated to the card is automatically started. Other activities can be added in writing. Sign this printout and keep it for inspection. MC72: Measures: – Request card ejection. – Check tachograph card. – Clean tachograph card. – Clean the contacts of the card slot. Note: If, as before, no communication with the card is possible when the card is ejected, a printout of the activities allocated to the card is automatically started. Other activities can be added in writing. Sign this printout and keep it for inspection.

What you'll see

No driver-visible symptom recorded.

System reaction

MC54: - Fault warning messages MC72: - Fault warning messages

Diagnostic depth

Detection

MC54: (For card slot 1) Fault during update or new authentication of the tachograph card. MC72: (For card slot 2) Fault during update or new authentication of the tachograph card.

Possible cause

MC54: (For card slot 1) Possible causes - Contacts of the tachograph card dirty. - Tachograph card defective. - Contacts of the card slot dirty MC72: (For card slot 2) Possible causes - Contacts of the tachograph card dirty. - Tachograph card defective. - Contacts of the card slot dirty

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