Page 365 in your owners manual under power system wont start. If the ready indicator doesn't light up do the following checks:
Indicator conditions:
1. frost icon with thermometer: see page 74
2. steering wheel icon with keyfob: see page 366 for weak/no power to keyfob (hold it to power button)
3. power system indicator comes on: have the vehicle checked by a dealer
4. transmission indicator blinks, and park, with exclamation mark is on: see page 59 on transmission system.
Check the brightness of the interior lights
1. The interior lights are dimmer than usual, flickering, or wont illuminate, have the 12v battery checked by your dealer.
2. The interior lights come on normally, check the fuses see page 378/or take it to a dealer.
Check the shift mode/position
The transmission is not in P (don't know why this suggestion is here, i think this was from the petrol automatic shifters):
Put it in P
Check the Immobiliser system indicator, if it is blinking it wont turn on the power at all see P66
IF YOU CANNOT TURN THE POWER ON AFTER CHECKING ALL THE ITEMS ABOVE HAVE THE VEHICLE INSPECTED BY A DEALER.
IF YOU NEED TO USE THE CAR IN AN EMERGENCY JUMP START THE CAR.
Jump starting, use an isolated, stand-alone BOOSTER battery ONLY do not use a battery connected to another vehicle and jump start the "OLD FASHIONED" way as the voltage spike can damage the DC/DC converter, if it goes above 15 volts damage will be made to the 12v system.
You have to remember the 12v system in these cars is low, amperage there is no high-amperage starting system on the 12v side, that is taken care of from the HV battery that feeds the stator/motor assembly to start the engine.
There is also a MAIN system fuse, 150A in the fusebox next to the battery, i doubt it will be blown but check it anyway, if it is then it will have to go back to the dealer as there would be a serious fault present, but I doubt that would be the problem.
