Yes I had an airbag light after my battery drained due to back hatch not being properly closed. After going through every possible internet site, speaking to Lotus directly, speaking to a dozen lotus mechanics the only thing I was told was that it occurs when the backup battery in the airbag is deputed due to low battery.
There were no bad connections or fuses. The car only has 3k miles and never even hit a bump for anything to be out of place. My generic scanner didn't work. One I bought for nearly $300 from Advanced Auto Parts didn't work. I made an appointment with a very nice person at the NJ Park Ave dealer (BTW just to let you know how prices for the reset vary, they charge $75 where as a dealer just 30 min away from them "Victory" charges $175).
As a last resort I bought the scanner mentioned above and went through about 3 min of trying the other stuff and about 30 min of deep thinking.
YES in actuality I cleared the code. I will keep this scanner and will not update the software (although it is recommended). Iím afraid I may lose this option)
So there you go my Fellow Lotus-ians. This site has always been such a good resource, Iím happy to give back with a solution to the secret of Airbag