The car door lock is designed to close doors and prevents unauthorized access to the car. A modern door lock is an important element of the vehicle's passive safety system. In the event of a side impact, it transfers and dissipates forces from the door to the body.

In addition, the door lock must meet the requirements of comfort - have a pleasant sound when closing, tactile sensations when opening the handles. A car door lock is a part of a locking system that, in addition to it, unites the locks for the hood, trunk lid, fuel filler cap, and glove box.

1. A4 (8EC, B7)
2. A4 Saloon (8EC, B7)
3. A4 / S4 (8EC, B7)
4. A4 Avant (8ED, B7)
5. A4 / S4 Avant (8ED, B7)
6. EXEO (3R2)
7. EXEO ST (3R5)
8. See more in applications

The construction of the car door lock

Structurally, the car door lock combines mechanical and electronic parts. The mechanical part provides the implementation of the main functions: closing, opening, locking, unlocking. The electronic part is represented by various electronic control systems for the mechanical part - central locking, remote control, intelligent access system.

The mechanical part of the TOPRAN brand Door Lock, depending on the manufacturer, car model, door type, has a different design. At the same time, the following general device of a car door lock can be distinguished: locking, lever and blocking mechanisms.