Acura TSX no dashboard response, only horn functions after battery charge on Acura TSX

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

Problem overview

Some Acura TSX owners report experiencing issues where the dashboard shows no response while only the horn functions after a battery charge. This lack of dashboard activity may indicate insufficient battery power to operate the vehicle's electronics. Additionally, if the horn is the only component working, it could be due to the security system being activated post-battery change, resulting in the horn sounding continuously. Owners also note that weak battery performance can lead to flickering dashboard lights and difficulties starting the engine, which may prevent the starter motor from receiving adequate power. In colder weather, some have reported the horn going off randomly, possibly due to damage from incidents like driving into snowbanks. Furthermore, a blown fuse for the horn can interrupt the circuit, preventing it from functioning properly. It is recommended for owners to check the battery charge level, verify the security system status, inspect the horn fuse, and address any weak battery issues to resolve these concerns effectively.

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