Orange cog

[camp freddie]

Hi.
On a couple of occasions in the past week, when I start my X5, the orange warning cog appears in the dash. It goes out after 10-15 seconds.

Has anybody experienced this? I'm slightly concerned it will manifest itself into something costly.

I have used the Carly app but only get 9D48 fault code which could be relevant.

My car is 2008 3.0d with 115,000. Despite repeatedly questioning my BMW dealer over the past few years, the transmission fluid has never been changed.

Thanks in advance.