McLaren Super Series Owner's Handbook Manual page 134

Instruments
Folding Driver Display
Oil status
Displays a gauge showing the level of oil,
together with the oil temperature.
To check the engine oil level, see Checking the
engine oil, page 6.04.
3.08
Battery
Displays a gauge showing the battery charge
status.
To charge the battery, see Charging the battery,
page 6.16.
To see how long the vehicle can be parked
without the engine running or charging the
battery, see Parking days, page 2.02.
Servicing
At approximately 30 days or 625 miles (1,000
km) before a service is due, the above display
appears.
The message will then appear every time the
ignition is switched on, with the time/distance
figures reducing. Once the service has been
carried out, the display will be reset by your
McLaren retailer.
If a service becomes overdue, the display will
show the distance by which it is overdue.