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8. For vehicles from model year 2009, automatic activation of trailer stabilisation can be checked as follows when the
trailer equipment is connected:
Vehicle self-diagnostics
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9.
Only Touran: When using a trailer, the vehicle's central fuse, relay and terminal box must coded as follows to
deactivate the rear fog lamp:
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Select vehicle system: 09 Central electronic fuse, relay and terminal box
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10. 10. – 14. Only Passat B6 up to and including MY2007:
11. Turn off the ignition, pull out the ignition key, wait for 1 minute, and turn on the ignition.
12. In order to active the trailer stabilisation, the coding of the control unit of the electronic brake system must be changed:
Vehicle self-diagnosis
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Stick the label with the code numbers into the manual "1.1. Service Plan" in the section "Other Entries of the
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Garage".
13. Turn off the ignition, pull out the ignition key, wait for 1 minute, and turn on the ignition.
14. Checking / changing the coding of the control unit of the parking brake
Vehicle self-diagnosis
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15. After or instead of coding, a back-documentation must be carried out via the software version management as follows!
Start guided troubleshooting with the vehicle system test
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Function- component selection
16. All: Finally, as at the beginning, perform a system request regarding the "Guided error location" and delete error
codes if necessary.
72
72
03 Brake electronics
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011 Measurement values
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enter "10" and "Q"
Identification: Continue
Select diagnostic function: 007 – Coding (Technical Support 1A)
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Select vehicle system: Electrical system control unit Coding lang
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03 electronic brake system
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Read out the current code number of the electronic brake system and write it on the supplied white
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label.
07 coding the control unit
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new code number = old code number + 16384
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Write the new code number on the supplied label, too.
03 actuator diagnosis
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Press "Next" ⇒ the brake lights of the vehicle are actuated
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Stop the actuator diagnosis
53 parking brake
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Vehicle without AutoHold function: code number 11
Vehicle with AutoHold function: code number 12
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07 coding the control unit
Software version management
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Select conversion/retrofitting
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Trailer yes
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Change coding value: Byte 8 bit character set x1xxxxxx (x: enter the current
values in the input field), To do so, switch to the input mode [BIN]."
Enter the code number depending on the vehicle's extras (with/without
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AutoHold).
Put in the test program required action code (if necessary ask the VW
specialist)
321 600 391 101 - 023
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