I saw that somebody was assuming that a car of this caliber would have an automatic shut off after a certain period of time. The dealership told me that the car does not have that option. It has everything else you would want, but it doesn't have a kill switch if you leave something on. It also doesn't have an idiot light to tell you that the battery is NOT charging. They have left us up a creek without a paddle. You just hope when you get in it will start.

 

It does kill the power after a certain amount of time if you lock it using the key fob. It even says it in the manual. This is why it is such a problem is because the power shut-down does not turn off the power properly if you use the lock/unlock button on the door.

 

yeah i dont think you can get it lemon'd for a bad battery a few times, but gl, there's a member here i know who's car has been in the dealership longer than at home apparently and he hasnt been able to lemon it as far as i know

 

You know, someone posted this comment about the FOB vs. door button - anyone that understands any electronic/software technology knows this is BS!!!!! If the tech that said this is still working at a dealer he should go find a job at Jiffy Lube. If this was in fact true, Infiniti would have had a S/W fix immediately 2 years ago.

Give me a friggin break...

Edit: From the Service Manual. The door button is not always powered on - it only sends a signal to the BCM when pushed which starts the transmit/receive process.

OPERATION DESCRIPTION/DOOR LOCK/UNLOCK
• When the BCM detects that each door request switch is pressed, it starts the outside key antenna and inside key antenna corresponding to the pressed door request switch and transmits the request signal to the Intelligent Key. And then, check that the Intelligent Key is near the door.
• If the Intelligent Key is within the outside key antenna detection area, it receives the request signal and transmits the key ID signal to the BCM via remote keyless entry receiver.
• BCM receives the key ID signal and compares it with the registered key ID.
• BCM sends the door lock/unlock signal and sounds Intelligent Key buzzer warning (lock: 2 time, unlock: 1 times) at the same time as a reminder.

 

Hey all. I'm the guy who started this particular post back in December when my battery died. Guess what? My replacement battery (which apparently is supposed to better than the original)...died 3 times in the past 8 days. Funny thing is that the original started showing signs of being weak before it eventually went dead. The replacement battery always..always fired up without any hesitation. Then 1 day...I think I may have had the car off and the radio on for literally 10 minutes...started the car...dead.

Anyhow...it's at the dealer...service guy said that "all the sensors and electronic "stuff" in the car stay on for 45 minutes when you turn off the engine...after 45 minutes...everything goes to sleep. However, he has heard that if you leave the ipod connected to the ipod cable...that part doesnt turn off."

I leave my ipod classic connected all the time. Have any of you heard this as well???

 

im pretty sure it turns off, and ur just back in the same boat as most of us, just another bad battery

 

Incorrect - this service guy should read his own manuals. It doesn't even make sense if he really thinks about it. Why would all the electronics be allowed to remain active for no reason?

The "electronic stuff" is controlled by the IPDM E/R and BCS modules which enter low power (sleep) mode as soon as all the conditions of the various sensors indicate as such. There's no timer, especially one as long as 45 minutes to keep all the electronic modules active. As soon as all the doors are closed and locked this process kicks in and takes no longer than the time for the security timer to arm. The details are in the service manual.

If you leave the car in ACC mode (i.e. to play the radio or keep the power outlet on) with the car in P and all the doors closed, the Battery Saver function kicks in after 60 mins to cut off power supply. Maybe this is what he was thinking.

 

Got a call back from my dealer. Says that Infiniti has recognized a problem with the Current Sensor and has instructed them to replace the Current Sensor which turns the alternator on and off, replace the battery and monitor the car for the next 4 days. The service guy I talked to this afternoon is the normal guy I work with and confirmed that yes...that the "the sensors and electronic "stuff" do remain active for 45 min. If a key is not cabin or if the brake is not depressed..the car then goes to sleep. Also said that leaving the ipod connected does not drain the battery. Noted that owners of older g sedans that did not have the factory ipod cable were leaving their ipods hooked in via cigarette lighter.

Anyone heard of the Current Sensor issue?

 

Mine died maybe 9000 miles old. I coincidentally got a new amp / subs around that time too. Might have had something to do with it.

 

Just wanted to let you all know who have dealt with this dead battery issue. I have contacted a lemon law attorney. They said that I have a case. I brought it into the dealer ship again for the 7th time and 4 batteries later. Problem still not fixed. I will be signing the papers this week to take Nissan Corp. to court regarding the lemon law. The dealer ship knows that there is a problem with the G37S (9 cars infact) and nobody can seem to find the problem. Hopefully Nissan Corp. will recognize the problem and deal with the issue. My case is in Massachusetts and I filed with the first year or first 15,000 miles. Hopefully this will set a precidence for all who have suffered with this problem. I can't do deal with this for the next 3 years. Paid way too much money for the car to have in the dealership every month. Will keep you informed.

 

My battery just died for the third time in the three months I've owned the car. I hope the dealer will replace it at my word, because they're an hour away and I really don't want to have to wait 'til it dies again and then have it towed all that way.

I do have a radar detector hard wired to the rear view mirror. Is it possible that this is causing it? The detctor works properly, and turns off when the ignition is off, but is it possible it is causing the problem? Is the dealer gonna freak out when they see the hardwire job?

 

no the radar detector hard wired shouldnt be the problem, simply cus i have one hard wired and hasnt caused me problems since install, and i've had the dead battery issue a couple of times

just take it out, before u go to the dealer, (fyi my closest dealership is 3hrs away )

my solution was to go aftermarket battery, and everything's been fine. 150$ battery is more than worth the 6hr drive (there/back) and a day wasted.

 

There is a couple of threads going on about this possible battery drain somewhere. If i dont start my car for 3-4 days the battery dies without fail. It has happend to me 3 times this year. And just to be sure I unhooked the hardwired radar detector the last time I left my car alone for 4 days, and sure enough the battery died. I dont know if an after market battery would change this or not.

 

I have a V1 hardwired into the rearview and I had a battery problem that started about 9 months after I bought the car. Dealer replaced the battery, didn't comment on the radar detector. I haven't had any problems since then. So at least in my case the hardwire is not the problem. From what I understand, Nissan/Infiniti had a problem with bad batteries in that timeframe, batteries wouldn't hold a charge.

 

Well, I just got back from the dealership. They ran their extensive battery tester on my battery, and everything came back good.

They said that since I had low mileage (1500 miles in 3 months) that the problem was probably that I am making two many short trips and the battery does not have time to charge properly. I wonder if they're right... Of course, I have never had this problem with any of my other cars and the same driving habits, but the service manager said that this car has a lot more electronics, BOSE audio, LED lights, etc, and that if your trip is not at least 7 miles long, you are taking more from your battery than you're putting back into it. They recommended that if I continue to drive it on short trips like I've been doing that I get a charger and periodiclly charge the battery up. That seems crazy to me, that they make a $40,000 car that can't be driven in the city on short trips, but maybe that's just how it is.

They wouldn't replace my battery, but to keep me happy they replaced it with another one from a brand new car. We'll see if it makes a differnce. The service manager was actually really nice, and everyone there like the new R2C intakes - they had never seen them before.