Volkswagen Passat key fob antenna failure requiring complete replacement and reprogramming of keyless entry system on Volkswagen Passat

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Volkswagen Passat owners report experiencing key fob antenna failure, which can lead to issues with signal transmission for the keyless entry system. In cases of antenna failure, these owners find that a complete replacement is necessary, and they are advised to consult a professional technician or authorized service center to ensure the correct replacement part is used. After replacing the antenna, some owners note that reprogramming of the keyless entry system is crucial to synchronize the new antenna with the vehicle's security system. Due to the complexity of this process, many owners recommend seeking assistance from a qualified technician. Additionally, some owners suggest that a diagnostic check by a professional can help pinpoint the exact issue with the key fob antenna before proceeding with a complete replacement. Visiting an authorized Volkswagen service center is also recommended to ensure that genuine parts are used and that reprogramming is performed correctly. Promptly addressing these issues is important to ensure the keyless entry system functions properly.

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