For last few months when i'm starting the car, I get the 'airbag failure, refer to owner's handbook' message. This would remain for a second and go away. I noticed it for the first time probably in August. This used to happen occasionally. Once I even had a yellow coloured “car with lock symbol” on for about 20-30 minutes, after which it went away. The next day I went to Fiat Service Station and they told me not to worry as the lights went off by itself. Read the manual and it says that the car is running diagnostic for voltage. Both the problem occurred a few more time after which I took the car for third free service at the end of 2[SUP]nd[/SUP] year. The engineer asked me to get the battery checked at Exide center. I later took the car to nearest Exide shop and got the battery examined. They could not the find any problem with the battery. The voltage, water level, gravity all seemed to be normal. But the problem kept cropping up regularly and more frequently. 10 days back I went to Ahmedabad from Baroda and in the evening (after driving approx. 200 Km I parked the car in front of a shop. After 15-20 min when I came back the car wouldn’t just start. All the lights were on, the head light worked, the remote locking, windows all were working but the cranking was very weak and wouldn’t start at all. As a last resort the car was pushed and started. Didn’t stop the car till I reached back to Baroda. On the next morning the car started without a fuss. And I stopped using the AC completely. In the next couple of days I would get 'airbag failure, refer to owner's handbook' message, ABS not working whenever I would start the car for a second or two. But without any starting problem. After a day or two I had gone to shopping in the evening (the car had run without AC about 30-40 km in the day without starting problem), I used the AC for 10-15 min. I again had parked the car for 15-20 min and then the car just wouldn’t start, no cranking at all. But the display light was on. I tried to start a couple of times but no response at all. I kept the car like that, finished the work and came back after 30 min. and the car started in the first try. This happened with father again on the very next day. For last couple of days there is no starting problem. Yesterday I took the car to FASC and they checked the car and have advised that we will have to send all the details to Puna. I am sending this detail to them regarding the problem. Their hunch is that the battery is dead and i need to replace it. But i read that another person had similar complain had the AC relay was the culprit. I am also suspecting that there might be some problem with the AC as the problem started some time after the update. I dont even know if the ECU was updated at the time of AC kit update. Kindly give me your valuable suggestion.