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This Audi CAN gateway module fits Audi A4 B8, A5 8T and Q5 8R models. The primary OEM number is 8T0907468AB, with alternate reference 403221. It is an original communication control unit used to link multiple electronic systems across the vehicle network.
The gateway module acts as the central data hub between control units, allowing systems such as engine management, body electronics, diagnostics and convenience features to exchange information correctly. It supports stable communication across the CAN network and helps the vehicle recognise and manage messages between modules.
Common signs of a faulty unit include communication errors between modules, intermittent electrical faults, warning lights, battery drain, diagnostic access issues or functions that stop working without an obvious wiring fault. In some cases, multiple unrelated systems may show faults at the same time when the gateway is failing.
This is a used original part, removed from a vehicle and tested before sale. Match 8T0907468AB and 403221 with your existing unit before ordering. Professional installation is recommended, and coding, programming or adaptation may be required after installation depending on vehicle equipment and system configuration.
İadeler yalnızca orijinal kusurlar için kabul edilir — varışta hatalı, tanım dışında veya yanlış parça gönderilen — 14 gün içinde talep edilmiş olmalı, 3 adet kurcalama karşıtı etiketin tamamı sağlam olmalıdır. Fikir değişikliği, yanlış kurulum, kodlama/programlama veya alıcı uyumluluk hataları için iade yapılmaz; uyumluluk kontrolü (OEM numarası, yazılım sürümü, araç) alıcının sorumluluğundadır. Tam politika: https://giantparts.eu/refund-and-returns/
