Alarm Siren with Internal Power Supply (Alarm Speaker / Horn) – 5Q0951605A

Original intelligent alarm siren with an internal backup battery (autonomous sound signaling device for the factory EDW / DWA anti-theft system), designed for Audi A7 Sportback (4K / 4K8 generation) and Audi A6 (C8 / 4K generation) vehicles, as well as other VAG Group models based on the MLBevo and MQB platforms.

Factory VAG Group safety component communicating with the body control module (BCM / comfort module) via the digital LIN-Bus. It features an integrated backup power cell, enabling it to generate a loud, modulated acoustic alarm even if the vehicle's main 12V battery is disconnected for sabotage or discharged.

Technical specifications:

• OE part number: 5Q0951605A / 5Q0 951 605 A (also available under part numbers 5Q0951605, 5WA951605, 1K0951605C)

• Function: Autonomous alarm siren with backup power supply (Alarm Siren / Horn with Backup Battery)

• Control / Communication: Integrated digital controller with LIN-Bus (3-pin connector)

• Construction: Sealed plastic housing with high resistance to moisture, road salt, and temperature changes

• Installation location: Windshield cowl – water drainage channel under the plastic windshield cowl (within the anti-theft basket)

• Steering wheel side: Left (LHD – European version) and Right (RHD)

• Condition: Original used part (100% functional, electronically tested for communication with the control module, internal backup power supply functional – no DTC memory errors, socket and pins clean, housing sealed and free of cracks)

• Manufacturer: Audi / VAG (Original OEM)

Main applications:

• Audi:

  • A7 Sportback (4K8) – model years 2018 to 2024

  • S7 / RS7 Sportback (4K8) – model years 2019 to 2024

  • A6 Saloon / Avant / Allroad (C8 / 4K2 / 4K5) – model years 2018 to 2024

  • S6 / RS6 Avant (C8 / 4K8) – model years 2019 to 2024

  • A8 / S8 (D5 / 4N) – model years 2017 to 2024

  • Q7 / SQ7 / Q8 / SQ8 / RS Q8 (4M / 4MN) – model years 2019 to 2024

  • A4 / S4 / RS4 (B9 / 8W) and A5 / S5 / RS5 (F5)

• Volkswagen / Skoda / Seat / Porsche:

  • Compatible with most VAG Group models equipped with a factory alarm system

Fitment guarantee and VIN verification

Each siren undergoes a communication bus diagnostic test and verification of the sound activation system's readiness to ensure the internal chamber remains sealed.

Installation note: Siren 5Q0951605A is factory-mounted with breakaway rivets or a security screw in the windshield cowl area. After correctly plugging in the LIN and power connectors, the siren automatically pairs with the vehicle's comfort module. Before purchase, we recommend comparing the OE designation on the old part or verifying fitment using the vehicle's VIN.