Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Heating, ventilation, air conditioning | Heating, air conditioning | Self diagnosis, V.A.G Inspection Service | Self-diagnosis of Climatronic, vehicles 10.99 ? | Diagnosis functions with vehicle diagnosis, testing and information system VAS 5051A or vehicle diagnosis and service informa

Selecting vehicle system

–	Press 08 A/C-/heater electronics -arrow- on the display.

Indicated on display

The control unit identification and code appear on the display -arrow-, e.g.:

Part number for Climatronic control unit -J255-

t	Left-hand drive with blue display 3B1 907 044 C.

t	Right-hand drive with blue display 3B2 907 044 C.

Climatronic = System designation

SXX = Software version

Code: no code 00000 - display flashes

Code number	For vehicles
04000	All countries except Japan
04100	Japan
04001	All countries except Japan without ambient temperature display
04101	Japan without ambient temperature display

Note

t	If code differs from vehicle version:

t	Check control unit code → Chapter.

–	Press arrow key -1- on display.