I think youll have to pop the plastic centre console off (4 screws) and take out the 4 screws holding heater controlpanel in, then you can twist the panel and get behind to the bulb holders. They are twist fit, but its difficult to get fingers in. I fitted a blue T10 LED in mine (circled in red in second photo) a few days ago, but only had 1. Got to get another and fit it. I think access to that bulb is from the other side of the unit, hoping i can twist it enough to get around to that bulb holder. Both bulbs have been blown since i got the car 2 years ago 🤣🤣.