Hyper-Blinking Indicator

[Shaminc3]

Hi all

I have been experiencing some hyper-blinking when using my right indicator which occurs intermittently. The indicator LED seems to be fine and bright when not hyper-blinking but when it does, the rear right LED indicator seems weaker which I think means the LED in the rear is fine but might be the connection.

Do anyone have a guide on how to access the rear right light housing from the boot in a 2019 Coupe? I have a feeling if the issue is bigger than just the connection, it will be a very expensive job of getting a new rear light unit put in as I think the LED indicator part is a sealed unit...

Thanks