Page 3 of 3 Revision 01 10/03/19
VLM5 Towing Kit Installation & User Guide
7) Now start the engine, wait 10 seconds and then unplug the 13-pin connector to simulate an indicator failure on
the light board, trailer or caravan. This should then cause the dashboard warning to show a ‘failure’ and the red
LED on the VLM5 to start flashing. Reconnect the 13-pin socket to clear the fault.
8) Turn off the engine / ignition, testing is now complete.
6 Fault Finding
When connecting a light board, trailer
or caravan you are not seeing the
indicators flash to confirm learning of
the extra indicators.
Ensure the Sargent PSU is turned on.
Check the VLM5 red LED is illuminated.
Ensure the ignition is turned off, as learning can only take place with the
engine stopped.
If the light board, trailer or caravan uses LED brake lights these may not
provide enough load to trigger the trailer detection / indicator learn
process. In this case you will need to add an extra ‘load’ to the brake
light circuit of the light board, trailer or caravan by adding a load resistor
(we recommend a 50W 6 Ohm resistor or similar. Please note this
resistor may become hot during use so should be mounted in a suitable
place).
With no light board, trailer or caravan
connected, you occasionally see a
random flash of the rear indicators.
This can be caused by a false trigger of the trailer detection / learning
process.
On some vehicles a change was made to the high-level brake light
which in some cases can cause this problem.
A software update is available for the VLM5 to correct this issue. Make
a note of the software number on the unit and then contact Sargent
support for more information and advice on how to update the unit.
When using the vehicle (without a light
board, trailer or caravan connected)
you are seeing lamp failure indication
on the dashboard.
Ensure the Sargent PSU is turned on.
Turn the ignition off, wait 10 seconds and then turn it back on.
Check the VLM5 red LED is illuminated and not flashing.
If the LED is flashing check the connections at the VLM5 and the rear
indicators.
Make a note of the software number on the units and then contact
Sargent support for further help.
7 Help & Assistance
If you do experience any problems with the installation of the towing harness or operation of the VLM5 please contact
the Sargent Support team on 01482 678981 or email them at support@sargentltd.co.uk
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