Constantly Illuminated Speedometer

[Paul Miller]

I have an Astra J estate 2015 which has a constant pink illumination from the entire Speedometer. This glows whether to car is running or not, locked or not, in fact it never goes out - any ideas please?

[Vauxhall Owners Club]

It sounds like there may be some light bleeding through from another part of the dash area (such as illumination for the alarm status lamp, possibly)