Location of components
The central locking function uses the following components (may differ depending on model, model year, options and market):
| Position | Component | Position | Component |
| 3/73 | Power child lock switch | 4/56 | Central electronic module |
| 3/74-3/77 | Switches in door locks | 4/58 | Rear electronic module |
| 3/78 | Switch in trunk lock | 4/70 | Upper electronic module |
| 3/111 | Light switch module | 5/1 | Driver information module |
| 3/112 | Climate control module | 6/37 | Lock motor for the fuel tank filler cover |
| 3/126, 3/127 | Drivers door module / Passenger door module | 10/13, 10/14 | Turn signal lamp, front |
| 3/173 | Valet lock switch | 10/15, 10/16 | Turn signal lamp, front fender |
| 3/174 | Switch for reduced alarm. | 10/54, 10/47 | Turn signal lamp, rear |
| 4/9 | SRS (supplemental restraint system) control module | Key and lock cylinder | |
| 4/16 | The brake control module,2002-/ ABS-control module, 1999-2001. | Remote control |