Juat after setting out for work yesterday morn, I increased the radio volume & it continued to go up after I let go of the button. As I was turning a corner, I tried turning it down via the head unit volume control, which succeeded in stopping it going above 19/20 as the two fought for control of my eardrums.
I turned the radio off, then back on & it all worked normally. I checked, there is no sign of the stalk buttons sticking.
Glad it wasn't the cruise control increase button.......
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)