According to the repair shop, the clip which holds the sunroof drain tube in place is prone to breaking, which can redirect water from the sunroof into the cabin or floorboards. The leaking water completely corroded the BCM (body control module), causing a complete failure of the power windows, door locks, and starter button. Fix involved pulling off several interior door & dash panels to get to the drain tube clip to replace it, then either a complete cleaning or replacement of the BCM. Parts costs was not much, but labor cost was very high.

Second time this happened in 18 months! First time, another dealer said that 'Vent Control Valve" problem had caused battery drain. This dealer said it was all my fault for not driving car enough, notwithstanding the fact that I had driven it for an hour on highway four days prior to dead battery; returned on day 3 for another hour at highway speeds; on day two drove 5 min each way to run an errand locally; following day car sat in garage. Next mooring dead. Dealer said 'G37 has a high compression engine and takes a considerable battery draw to start the engine. I told dealer about tech bulletin B10-010C, but they said that solution had previously been applied to my vehicle and was unrelated to current problem (of 18 month old battery found dead after car had been driven over two hours in four days previous to this incident).

So, either:

1). Dealer doesn't know how to service car, so no Infiniti will be purchased again

2). or, this is not the car for my life style and I need to figure out how to find a car with lower compression/higher battery ratio.

Granted, I take a lot of short, 5-10 minute trips, but I need a car that can accommodate suburban errand running without a lengthy daily commute, so no Infiniti will be purchased again.

This is the third time this has happened and Infiniti claims there is not an electrical issue with my car. They keep coming up with excuses as to why they will not do a complete ground check - "Infiniti won't pay for it", "Too many grounds to check". When the car was towed into Orlando Infiniti 4/9/12, the Service Manager stated to me "I'm not sure what Infiniti is going to let us do".

My car looses complete power, no headlights, no brake lights, car won't unlock, trunk won't open, etc. Total neglect from Infiniti. At this point, my safety is at risk due to my job putting me in unsafe neighborhoods with a car that "may" or "may not" start and Infiniti says there has not been "a reasonable amount of repairs yet" to warrant buying car back.

Well I been driving the vehicle for a week and the day I went to buy it the battery was dead the salesman gave it a boost and it crank right away without any problems. I drove the car to my house for the weekend and on Monday it was completely dead again so I thought it was the battery so I took it to the mechanic to have the battery check and it came with good results no problem with the battery. so I crank it again and it worked it has not happen yet again but I am sure it will so if it happens again I will buy a battery and see if the battery is the problem. my car have all the bell and whistles so I am sure something in the electronic system is draining the battery. I will keep everyone posted.