Audi Workshop Service and Repair Manuals

All functions which could previously be performed with V.A.G 1551/1552 can also be performed with the new vehicle diagnostic, testing and information system VAS 5051 in the operating mode: "Vehicle self-diagnosis":

=> Operating instructions for Vehicle Diagnosis, Testing and Information System VAS 5051.

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

• ◆ VAS 5051 Vehicle Diagnosis, Testing and Information System

Test conditions

• ● Fuse OK.
• ● The battery voltage must be at least 11.5 V.
• ● Switch off air conditioner.
• ● On vehicles with automatic gearbox, make sure selector lever is in "P" or "N".

Work sequence

• ‒ → Connect up vehicle diagnostic, testing and information system VAS 5051 with diagnostic cable VAS 5051/1.

Depending on the function required:

• ‒ Switch on ignition

• or
• Start the engine : table of "Functions which can be selected".

Select operating mode:

• ‒ → Select "Vehicle self-diagnosis" on VAS 5051.

→ Indicated on display:

Select vehicle system:

• ‒ Select
  "01 - Engine electronics"
  on the display.

Notes:

• ◆ A message will appear in display zone -1- instructing you to select the required vehicle system.
• ◆ Move the scroll bar -2- up or down to display all other vehicle systems with diagnosis capability (for all models and equipment versions) which are not visible on the screen.

→ Wait until the message "Select diagnosis function" appears in display zone -1- of VAS 5051.

The control unit identification and coding will be displayed in display zone -2-, as in this example:

If the coding differs from the vehicle version, then:

• ‒ Checking control unit coding => Page 24-147,
  coding engine control unit

Select diagnostic function:

At this point all diagnostic functions are available.

• ‒ → Select the desired function on the display.
• ‒ Further measures see repair procedures.

Notes:

• ◆ In the functions 04 - Basic setting/08 - Read data block, the display zones will be listed from top to bottom.
• ◆ If the display does not indicate as described in the work sequence:

=> Operating instructions for Vehicle Diagnosis, Testing and Information System VAS 5051.