2022-2026 Audi Intermittent Event Memory Entries TSB 2080681/1

Audi has issued Technical Service Bulletin (TSB) 2080681/1 to address instances of intermittent event memory entries appearing in various control units. This TSB, released on January 21, 2026, provides detailed guidance for technicians on how to diagnose and repair the underlying cause of these intermittent faults, which primarily stem from damaged electrical contacts.

This issue is not a manufacturing defect but rather a problem that can arise in the workshop environment due to the use of unsuitable measuring tips during previous diagnostic tests. Such improper tools can widen and damage the electrical contacts, leading to unreliable connections and the subsequent Audi e-tron intermittent fault messages.

Symptoms

Owners may notice various warning lights or fault messages appearing intermittently. These symptoms indicate that control units in the vehicle are logging event memory entries without a consistent, hard failure. Affected control units can include:

• Engine control unit
• Airbag control unit
• Gearbox control unit
• Instrument cluster
• Gateway
• Onboard supply control unit
• Convenience control unit
• Control unit for headlight range control

Diagnosis / Trigger Conditions

The root cause of these intermittent event memory entries is damaged electrical contacts within the control unit connectors. This damage typically occurs when technicians use incorrect or unsuitable measuring tips during diagnostic procedures, such as through-flow checks. These tips can stretch and widen the contact sockets, compromising the electrical connection.

This problem is specifically identified as a workshop-induced issue, meaning it does not originate during the vehicle's production phase. The TSB emphasizes the importance of physically checking the contacts on the respective control unit connector before proceeding with further tests.

Repair Procedure Summary

The repair process outlined in TSB 2080681/1 focuses on the physical inspection and repair of damaged electrical contacts. Technicians must first visually inspect the contacts on the control unit connectors.

For 0.63 mm contacts, which are commonly used in the listed control units, a specific contact pin (part numbers 000979007, 000979012, or 000979017) is required for testing. This test contact must be inserted straight into the socket to check for proper fit, as if it is being drawn in. Damaged 0.63 mm plug contacts can be repaired using repair kit VAS 1978.

For nano contacts, identification is crucial. They can be recognized by:

• The appearance of the unlocking mechanism in the housing (as shown in Figure 2 of the TSB).
• A part number search in the Electronic Parts Catalogue (ETKA), where repair wire for nano contacts is described as a 0.5 mm flat contact (e.g., part numbers 000 979 053 E and 000 979 053 EC).
• Their physical appearance, specifically a chamber size of 0.4 mm x 0.5 mm (not square), as depicted in Figure 4 of the TSB.

It is critical to note that nano contacts can only be physically checked using measuring wire V.A.G 1594/51. Attempting to check nano contacts with 0.63 mm contacts will cause further damage and additional complaints. Nano contacts can be removed using tool VAS 1978/35-3.

Required Tools or Parts

To properly diagnose and repair the Audi e-tron intermittent fault and similar issues, technicians will need specific tools and parts:

• 0.63 mm contact pin: Part numbers 000979007, 000979012, or 000979017
• Repair kit for damaged plug contacts: VAS 1978
• Repair wire for nano contacts: Part numbers 000 979 053 E or 000 979 053 EC (0.5 mm flat contact)
• Measuring wire for nano contacts: V.A.G 1594/51
• Auxiliary measuring set: V.A.G. 1594D (V.A.G 1594/51 is a supplement to this set)
• Test box for electrical tests: VAS 6606
• Test adapter: 6606/25
• Tool for removing nano contacts: VAS 1978/35-3

Owner Action

If your Audi is experiencing intermittent event memory entries or warning lights, it is recommended to have your vehicle inspected by an authorized Audi service center or a qualified independent technician. Reference TSB 2080681/1 when discussing the issue, as it provides the specific diagnostic and repair procedures for this condition. Please note that this TSB is informational and not applicable to any Audi Warranty, meaning repair costs may not be covered.