| Bleeding the brake system using the brake filling and bleeding device, e. g. -VAS 5234- |
| Special tools and workshop equipment required |
| t
| Vehicle system tester -V.A.G 1552- or vehicle diagnosis, measurement and information system -VAS 505x- |
| t
| Brake filling and bleeding device, e. g. -VAS 5234- |
| t
| Bleeding bottle (commercially available) |
Note | t
| Bleeding the brake system on vehicles with ABS is undertaken in the same way as for vehicles without ABS. |
| t
| On vehicles without ABS and with load-dependent brake-power regulator, move the lever of the brake-power regulator while bleeding the rear wheel-brake. |
| –
| Connect up the brake filling and bleeding device but do not switch it on. |
| –
| Remove dust caps from the vent valves of the brake calipers/wheel-brake cylinder. |
| –
| Open the bleed valves in the prescribed sequence with the hose of the bleeding bottle fitted, switch on the brake filling and bleeding device and bleed both the brake calipers and the wheel-brake cylinder. |
| 1.
| Rear right wheel-brake cylinder/brake caliper |
| 2.
| Rear left wheel-brake cylinder/brake caliper |
| 3.
| Front right brake caliper |
| 4.
| Front left brake caliper |
| –
| After bleeding close the relevant vent valve and fit dust cap. |
| –
| Disconnect the brake filling and bleeding device. |
| –
| Remove the connection on the brake fluid reservoir. |
Note | t
| After bleeding perform a test drive. While doing so perform at least one ABS adjustment! |
| t
| After bleeding or replacing the ABS, EDL/TCS control unit BOSCH 5.7 or the ABS, ABS/TCS control unit BOSCH 8.0 perform a final control diagnosis: |
|
| with the vehicle system tester -V.A.G 1552- → Chapter, or |
| –
| Perform test drive with ABS adjustment. |
| Vehicles with ABS/EDL/TCS or ABS/EDL/TCS/ESP BOSCH 5.7 |
Note | The bleeding of the brake system on vehicles with ABS/EDL/TCS or ABS/EDL/TCS/ESP BOSCH 5.7 occurs via the basic setting. |
| t
| with the vehicle system tester -V.A.G 1552- → Chapter |
| –
| Perform test drive with at least one ABS adjustment. |
| Vehicles with ABS//TCS/ESP BOSCH 8.0 |
Note | The bleeding of the brake system on vehicles with ABS/TCS/ESP BOSCH 8.0 occurs via the basic setting. |
| t
| with the vehicle system tester -V.A.G 1552- → Chapter |
| –
| Perform test drive with at least one ABS adjustment. |
|
|
|
