The cancel ring is broke .. easy job to do.
You need one of these ..
Indicator cancel Ring
The standard plastic tabs break and replacements are about £35 to £65 depends who you use!!
Prise out the centre horn push (if non-abs) dunno what to do if it is abs .. and disconnect leads.
Make sure wheels and steering wheel are in straight ahead position for when replacing.
Undo Hex nut, can't remember size but maybe 15 or 17mm, Nyloc but OK to re-use. Steering wheel should pull off splines easily.
The bottom of the wheel has the plastic cancel ring around it, very flimsy plastic, which has to be prised off.
The alloy ring replaces this with a set-screw to hold it.
Can't remember off-hand which way round the wires go, but the stock ones are replaced by those on the new alloy ring.
re-assembly is the reverse of assembly, as they say!!
I did it a while ago ...should have took pics but didn't, sorry ..