Our beloved Roomster just failed its MOT because the seat belt doesn't retract properly.

I can see that the part is on ebay for £38 and I am tempted to have a go at fitting it myself at the weekend.

Does anyone know how difficult it is to replace that part? I am assuming I will have to disassemble the inner panels in the boot but have never taken them off before.

It is worth trying to clean the belt with silicon-based cleaner such as https://www.autoglym.com/vinyl-rubber-care.html