The "Lighting Bolt" warning is for the ETC INDICATOR (Electronic Throttle Control) also known as "drive by wire".
For the 05 & 06 models it covered in the Factory Service manual, not sure if 2007 European models would be the same or not, but I suspect they are for this item.
Go to here to view
Click on:>
2006-KJ-SM.pdfto view the FSM for the 2006 model.
Then go to section 8J - page 117 and you can read all about the ETC and what the warning is telling you.
You should first check the connector to your throttle pedal in the floorboard and make sure it is not wet or that has any corrosion (
green crusties).
If it continues to give you problems, you can replace the complete assembly,
part number: Accelerator Pedal -- 53013703AB -- Electronic Throttle Control (ETC)
Includes APP Sensor. (Accelerator Pedal Position (APP) Sensor)
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