2021-2026 Audi 12V Starter Battery Discharged TSB

Frequently Asked Questions

What does TSB 2080517/1 address?

TSB 2080517/1 addresses issues where the 12V starter battery in various 2021-2026 Audi models is discharged or malfunctioning, providing diagnostic and repair procedures for technicians.

What are common reasons for an Audi 12V battery to discharge prematurely?

According to Audi, common reasons include customer driving habits (short distances, long stationary periods), no-load currents, bus system inhibitors, insufficient charging during vehicle maintenance, or incorrect battery testing.

What diagnostic addresses are relevant for a 'No-load current too high' issue?

If an event memory entry for 'No-load current too high' is logged, technicians should check diagnostic address 0019 as part of the diagnostic process.

How can technicians determine if the 12V battery is not charging correctly?

Technicians should check for issues like an alternator not working, especially for vehicles with MHEV systems, by examining event memory entries in diagnostic addresses such as 0001, 00CC, 0019, 0021, 00C4, 0051, and 00C6.