Toyota AURIS HV Owner's Manual page 139

 When disconnecting and reconnecting 12-volt battery terminals
The following information data will be reset:
 Elapsed time
 Average fuel consumption
 Driving range
 Average vehicle speed
 Liquid crystal display
Small spots or light spots may appear on the display. This phenomenon is
characteristic of liquid crystal displays, and there is no problem continuing to
use the display.
 Engine speed (hybrid model)
On hybrid vehicles, engine speed is precisely controlled in order to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even
when vehicle operation and driving conditions are the same.
 Setting display automatic suspension
In the following situations, the setting display will be suspended.
When a message appears.

 When the vehicle begins to move.
UK_AURIS/AURIS_HV_EE (OM12G88E)
2. Instrument cluster
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