Display group number 01: Bleeding hydraulic unit
WARNING: This page is about a different variant/trim than selected.
Special tools and equipment
- VAS 5234 Brake filler and bleeder unit
NOTE:
All functions which could previously be performed with V.A.G 1551 can now also be carried out with the tester VAS 5051.
- Connect brake filling and bleeder unit VAS 5234.
- Pre-bleed brake system
Refer to 47 BRAKES - HYDRAULIC COMPONENTS ; Bleeding brake system, vehicles with and without ABS
- Connect V.A.G 1551 scan tool and select (address word 03) brake electronics control module with ignition switched on; Refer to V.A.G 1551 scan tool, connecting and selecting function .
Indicated on display
| Rapid data transfer HELP Select function XX |
- Press keys 0 and 4. (The function "Initiating basic setting" is selected with 04).
Indicated on display:
| Rapid data transfer Q 04 - Basic setting |
- Confirm entry with key Q.
Indicated on display:
| Basic setting HELP Enter display group number XXX |
- Press keys 0, 0 and 1
- Confirm entry with key Q.
The following cycle of steps must be repeated 8 times according to the basic setting prescribed by V.A.G 1551 or tester VAS 5051.
Indicated on display:
| Basic setting 1 ON Depress pedal and hold... |
- Operate pedal with substantial foot pressure and hold.
- Pedal moves down
- Hydraulic pump runs
- Pedal comes back
Indicated on display:
| Basic setting 1 Rel. pedal; FR/FL bleed screw OPEN |
- Press key 3 on V.A.G 1551 or arrow up key on VAS 5051
Indicated on display:
| Basic setting 1 ON Please wait...(10 secs.) |
Hydraulic pump runs
Indicated on display:
| Basic setting 2 Depr. pedal 10X; bleed screw CLOSED |
- Press key 3 on V.A.G 1551 or arrow up key on VAS 5051
When all 8 cycles have been performed, this message appears on the display:
| System in basic setting 17 Part. bleeding ended... |
- Press → key.
Indicated on display:
| Rapid data transfer HELP Select function XX |
- Press keys -0- and -6-, this ends the output.
Indicated on display
| Rapid data transfer Q 06 - End output |
- Confirm entry with Q key
Indicated on display
| Rapid data transfer Help Enter address word XX |
- Press C key
- Switch off ignition.
- Disconnect connection to V.A.G 1551 scan tool.
- Bleed brake system again
Refer to 47 BRAKES - HYDRAULIC COMPONENTS ; Bleeding brake system, vehicles with and without ABS
- For vehicles with ABS/EDL/ASR/ESP: perform zero compensation for Sender 1 for brake booster -G201-. Refer to Display group number 66: zero compensation for Sender 1 for brake booster -G201- .