Westfalia 321 525 391 101 Instructions De Montage page 15

Installation Instructions:
Electrical System for Towing Hitch
Checking the correct operation
35. Reconnect the battery of the vehicle.
36. The vehicle's gateway has to be coded as follows using a service tester to extend its
functionality to the use of a towing hitch:
•
Address word "19", diagnosis interface for data bus.
o Select function 008 coding (service $22).
37. For vehicles fitted with parking assistance II or parking steering assistant, code the control
unit using the VAS tester via "Guided trouble shooting" to "with a towing hitch".
38. After the coding, an updating of the documentation must be performed via the software
version manager as follows:
•
Guided trouble shooting.
o Component selection function.
39. Finally, as at the beginning, perform a system request regarding the "Guided error location"
and delete error codes if necessary.
40. Check the trailer function with the help of a suitable test instrument (with load resistors) or
with the help of a trailer.
41. If necessary, bind back any excess cables, fasten all cables with cable ties and reinstall all
the parts that were removed.
42. Only for 13-pin trailer socket:
Using the 3-pin connector for the constant plus extension kit, the functions "Constant plus",
"Charge lead" and "Ground for charge lead" can be retrofitted. The constant plus extension kit
is available from specialist shops under the Westfalia part no. 300 025 300 113.
VW Polo A05
Select function 008.02 coding.
•
Select address word „69", trailer function.
o Change to „Coded".
Software version manager.
•
Software updating.
o (3) Perform upgrading / retrofitting solutions.
321 525 391 101 - 001 - 22/09
Continue the coding according to the menu.
•
Function „022" Exit output.
Enter measure code 302F1.
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