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Set up trailer operation
General
After the installation of the electric kit, the obligatory trailer lighting, Towing vehicle and trailer
stabilisation, as well as the trailer indicator control which is statutory in a several countries are
guaranteed without having to make any connections on the vehicle!
The message "Control unit incorrectly coded" will, however, appear in the fault memory ( 19 –
Diagnosis interface for data bus)! Yet this entry has no effect on the other functions and can be
ignored until your next regular service appointment. We recommend the connection via the
factory-mounted service tester within the framework of the annual service intervals!
Please effect coding as follows:
• Vehicle self-diagnosis
• self-diagnosis
• 19 – diagnosis interface for data bus
• 008-Coding (service 22)
• 008.02 assembly list coding
• 69 – trailer function ( switch to coded!)
• confirm with OK !
Vehicles with park assist systems:
The automatic deactivation of the rear park assist system in trailer operation will be
effected by means of the subsequent coding of the park assist control unit:
• Vehicle self-diagnosis
• 10 - park assist system II
• 009 Coding
• Master
• 009.02 plain text coding
• select trailer system
• confirm with OK !
Vehicles with front sensors:
On vehicles with front sensors, the control unit must be coded as follows:
• Vehicle self-diagnosis
• A5 front sensors
• coding
• Master
• clear text encoding
• trailer • with hitch
• press "continue"
Alternatively, an ODIS online encoding / re-documentation can be carried out !
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87502391/04.08.2020
PF Jones Ltd, Nuttall street, Old Trafford, Manchester, M16 9JA / Tel- 0161 872 4755 / email- info@pfjones.co.uk / web- www.pfjones.co.uk
NOTE:
Systems such as power assisted steering, Lane Change Assistant and Side Assist must
be de-activated during towing. Please consult your owner handbook or dealer for further
information!
Vehicles with start-stop system:
The start-stop system is deactivated in
trailer mode!
Towing vehicle and trailer stabilisation:
In most vehicles as of model year 2009 the automatic
activation the towing vehicle and trailer stabilisation
can be checked as follows:
• Connect trailer to vehicle electrically
• After the ignition has been turned on the
control lamp
comes on two seconds longer
than control lamp
(see also driver's manual)!
or evaluation via vehicle diagnosis:
• Connect trailer to vehicle electrically
• Vehicle self-diagnosis
• 03 Brake electronics
• 011 Measured values
• Enter "10" and "Q"
• Trailer yes
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