03 1.8 Mileage trip button not working - Jsp123
The mileage trip button (below the speedometer) having operated intermittently for a while, has now failed completely, i.e. when operated, it fails to reset the 'trip' mileage gauge to zero. The mileage gauge itself still works ok - I suspect that the contact behind the button is dirty/worn.

Is it fixable? I.e if I remove the speedometer/rev counter assembly will I be able to access to trip button contacts and clean them, or replace the button completely...........or is it a sealed unit? If the latter I understand that a new unit costs around £350 - in which case I'll just live with the trip button not working.

Any thoughts/ideas gratefully received.