Hi,
I recently flattened the battery on my 2009 450 (40,000 miles) after the boot was left partly open. The AA came out charged the battery so lights etc. were working, however the car still won't start. When the power button is pressed the display came on as usual however the engine won't start and error messages Check ECB and Check Hybrid System flash up. The recovery man tried a new 12v battery but still no joy, for the record the 12v battery was replaced 11 months ago by a Lexus dealer as I had problems starting the car, they also ran a diagnostic with no problems noted. Next step will be to get it towed back to the dealer which will be a lot of hassle so any suggestions would be much appreciated.
Many Thanks,
Ricky