Buy 2003 Audi A6 3.0L V6 CVT FWD Base Sedan Lock. Latch. Door. A6/S6; Right. Allroad; Right. Door - OEM Audi Part # 4B1837016H (4B1-837-016-H, 4B1837016C)

From Chassis/VIN 4B-W-000 001. Incl.Latch. Mechanism to secure door to chassis. Motor to lock and unlock car door. Actuator Motor. AND AMPLIFIER; switch.

Door Latch AssemblyDoor Lock Actuator Motor

Fits A6, allroad, RS6, S6

A6/S6; Right. Allroad; Right.
Door Lock Actuator - Repair or Replace
Your 2003 Audi A6 may need a new door lock actuator if your keyless entry doesn't work or your lock button doesn't lock the doors.