NHTSA Complaint #11708083 — 2024 HONDA ACCORD

The vehicle's infotainment system displays error code TT04 on every startup, preventing over-the-air software updates, including any potential safety-related updates delivered through this system. The TT04 telematics error appeared immediately following dealer service department completion of fuel pump recall service (NHTSA campaign 24V-763) on 4/12/2025. The vehicle exhibited no infotainment or telematics issues prior to this recall service. This suggests the recall repair procedure either was performed incorrectly or has an inherent flaw that damages the Telematics Control Unit (TCU) communication system. When I returned for subsequent recall service (NHTSA campaign 25V-785), the dealer dismissed the issue as 'normal' and refused repair, only offering to address it after I filed a formal complaint with management. This pattern suggests dealers are aware this is a consequence of recall work but are systematically dismissing customers rather than correcting their errors.