Service bulletins for the 2020 Audi TT
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
675 on file from NHTSA, as of 2026-10-19.
About B126C on the 2020 Audi TT: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: B126C are shown. Show all
| A9120782057052_3 | 2020-07-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains instructions for when the MMI shows the message 'Read error occurred when accessing the navigation data' after initialization and reboots constantly with DTC B126CF0 and/or B126CF1. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.