Audi & VW Relay List / Functions

Relay # 219 (443951253AA) – Fan Relay

Relay # 645 (4H0951253A) – Multifunction Relay

Depending on the vehicle, relay 645 is used for the Rear Heated Glass, Secondary Air Pump, Headlight Washer System, Power Outlet, Auxiliary Heater, etc.

Relay # 395 (8Z0951253) – Multifunction Relay

Depending on the vehicle, relay 395 is used for the Horn, Fuel Pump, Windshield Washer Unit, etc.

Relay # 207 (443951254A) – Power Electric Seat Relay

Relay # 192 (1J0955531) – Intermittent Wiper Relay

Relay # 640 (8E0907307F) – Servotronic Relay

Relay # 276 (443919533A) – Heated Seat Relay

Relay # 481 (7L0927841) – ESP / Stability Control Relay

Relay # 475 (07Z907281A) – Glow Plug Relay

Relay # 174 (1H0955529) – Rear Wiper Relay

Relay # 432 (3D0906383) – Battery Relay

Relay # 464 (3D0959485) – Airbag Relay

Relay # 173 (3A0941589) – Daytime Running Lights / DRL Relay

Relay # 191 (1H0953227) – Turn Signal Relay

Relay # 387 (4B0919471) – Exterior Light Relay

Controls your exterior lighting (Headlights, Tail Lights, Center Brake Light).

Relay # 600 (8D0907701B) – Fog Light / Lamp Relay

Controls fog light / lamp functionality.

Relay # 373 (8D0951253A / 95561501001) – Multifunction Relay

Depending on the vehicle, relay 373 is used for the Radiator Fan, Secondary Air Pump, Headlight Washer System, Horn, Air Suspension Compressor, etc.

Relay # 644 (4H0951253 / 95861500801) – Multifunction Relay

Depending on the vehicle, relay 644 is used for the Secondary Air Pump, Auxiliary Heater, Power Outlet, Vacuum Pump, etc