What is the round button with a green LED light below the 2nd start button for?

Just behind the left hand side of the steering wheel (58 plate Invincible).

In the manual it shows it is the rear differential lock but this looks nothing like it. The light only comes on when stationary. When you press it for 2secs, it beeps and the light goes off.

Was in the car till midnight last night, reading the manual

Wifey said what the f u doing? Driving me crazy!

jed

It cancels the front parking sensors until you switch ignition on again e.g. if you were parked close to something
& wanted to sit in car & listen to radio you could stop sensors beeping. they return to normal next time you start engine

Many thanks.

Finally, I can rest at peace!