OK, i agree with MWS. You need to know what you're looking for when you open the IC and you'll need to have the skills and tools to do the repair. And yes, if you don't have the tools and skills ans some know how you can make it worse.
On the other hand: the cars warranty is long gone. And there are videos out there that show how to diisassemble the ic unit. For example:
https://youtu.be/E-Fw05jsPWo
So maybe the video can help to decide if you DIY or ask some professionals.
Regards, Markus