This sounds very much like it may be the early version of Audio Software
for the US & Canadian market ( having XM Radio ) that had a "bug"
which intermittently prevented the audio system from shutting down
when the Ignition is switched off, causing the main battery to drain !
This problem was resolved by Triumph several years ago, around November 2014 or earlier,
when they released an update of the Software from Version 1.04A to 1.04E, at no cost.
You can check which version you have :
The Radio must first be switched off, so :
Turn the Ignition ON, and if the Radio is ON, turn the Volume down,
keep going past "MUTE" to "OFF", then turn the Ignition OFF.
Wait a minute until everything has shut down,
then turn the Ignition ON ( don't start the engine ).
and wait for the Instruments to complete their sweep.
Press and hold the "P" Button until the "Diagnostics" screen is displayed.
If the Software version isn't displayed, use the Scroll button until it is.
If the software version is shown as Version 1.04A then this is the problem,
and you should get this updated as soon as possible to Version 1.04E.
( Ignore the second line displaying the "BB" Software version ).
Unfortunately this Software is only officially available from an authorised Triumph Dealership,
using their "TOL" system ( Triumph On Line ), and sadly many Dealers seem to be totally unaware of it !
This Topic explains where the Dealer can access the Software .....
Where Triumph dealers can find audio software updates (U.S.)If your Dealer tries to Bill you for this update, then IF you have had your Trophy serviced
at a Triumph Dealership since November 2014, you could point out
that they are supposed to check for any Software updates at each Service,
and would appear not to have done so !
Also, if you have Version 1.04A I woukld recommend pulling the Audio system Fuse
until you get it updated, to prevent any further batteries from being drained.
( On my Trophy it's Fuse No.3 ( 10A ) of the forward Fusebox
behind the Left Side Panel - the one with the little Music note symbol. )
If the Main Battery is drained excessively it may not be possible to recover it,
and could need it to be replaced with ( another ) New battery !
If you do need the software update and encounter any problems getting it,
send me a Private Message and I will provide further information.
Cheers

