Hi Scotty, is disconnecting the 12 volt battery and connecting the positive and negative cables with a wire safe to do on a hybrid?  We own a 2008 Nissan Altima Hybrid with only 26,500 km (approximately 16,400 miles) on the odometer and we've kept it maintained and in new condition.  I used a trickle charger on the 12 volt battery without any problems but the last time I did it, the airbag warning light came on (the trickle charger showed a red light, too, indicating that there had been a problem).  The Nissan dealership diagnosed a faulty front passenger cushion airbag sensor and replaced it but the light was still flashing.  They then replaced the airbag diagnosis sensor unit but again with no success.  They told me to forget about it and just live with the flashing warning light but not before they took my $2,000 for the parts and labour.  I always thought that the trickle charger somehow messed up the ECU and the boot-up sequence so I thought I'd try to drain the charge from the car by doing what you did in your video.  But is is safe to drain the charge by connecting the positive and negative cables with a wire on a hybrid?  Will it affect my hybrid engine battery or its circuits?  If it's safe and it won't cause any more problems, I'll do it but if there is a possibility it might make the problem worse, I won't.  By the way, when we bought the car (brand new) in 2008 and went to pick it up at the dealership, they said there was a small glitch in the car's computer and they had to reprogram it.  They did it with a laptop.  Does disconnecting the battery and draining the charge do the same thing as what the dealer did, i.e. reset the ECU?  Thanks in advance for any information you can provide.