locking issue with keyfob

[ex35tdt]

I notice today that I cannot lock the car by pushing the button on the door's handle (driver's side). But if I lock it with keyfob, I still can unlock it. No problem with locking/unlocking using keyfob or button on the passenger's side.

After testing around, I see that if I take the keyfob out of my pant's pocket, then I can lock it.

Anybody experienced similar issue???

[txgcoupe]

Battery getting weak, maybe?

John

[Poyzinous]

does it beep at all when you try to lock it with the door button? Does the passenger side work? its possible that the switch is dead, and a new handle is in order, which your dealer should do under warranty.

[ex35tdt]

It doesn't beep when it doesn't lock. When it locks, it does beep. If I take the keyfob out of my pant's pocket, it locks fine.
The passenger side works fine.
Tried to replace battery yesterday, doesn't fix it.

My appointment to visit my dealer is a few days away.

[ex35tdt]

Dealer ended up replacing with new keyfob. As I suspected, that doesn't fix it.
They need to call Infiniti rep and let me know what they are going to do next. They told me this is the first time they heard and saw this issue.

[Poyzinous]

I also haven't heard of such an issue. odd. looks like you got one of those one-in-a-million type quirks

[drosen]

I noticed that it didn't work one time when I had the keyfob and cell phone in the same pocket. Could that be the issue?

[Poyzinous]

I noticed that it didn't work one time when I had the keyfob and cell phone in the same pocket. Could that be the issue?

Yes, and I believe I've mentioned that about 5 times in the past year. Keyfob is subject to interference from any other electrical item within 6 inches of it. Phones are known to cause a disturbance in the I-key's force.

[ex35tdt]

I am aware of this issue when I first got my 2007 G35. Many G35 members got stranded because of this.
But no I don't have my cellphone for about 1 week. Before that my keyfob is on the left and cell on the right pocket.

[ex35tdt]

I keep calling my dealer every week but they keep saying their technician/engineer is looking at it and they don't know the cause at this time. What should I do? Should I keep calling?

I am getting more and more irritating and tired. Any suggestion?

[Poyzinous]

Its probably because they haven't experienced it and so they're investigating it for future vehicles. Call every day if you want but not repeatedly during the same day as that could be rude. As long as they keep you updated and are giving you good service just relax.

[drosen]

Here are my thoughts on how the system works, though I'm only guessing:

• When you press the button on the keyfob, it transmits a signal to the car. The car is always listening for this signal, so it can respond immediately.
• When the keyfob is in standby, it just listens for a signal from the car, to which it replies by transmitting a signal back to the car. (Since transmitting uses more power, this work is left up to the car.) The car sends a signal a couple times per second, and when the keyfob replies, the car responds by turning on lights, allowing the door to open, etc.

Maybe the car isn't transmitting its signal a couple times per second. Since the problem only occurs on the driver's side, it sounds like it might be a disconnected or broken antenna on that side. I believe there is a separate antenna at each of the three door locks.

(Of course, it might just be interference. Thing is, it's an RF device (not sure which, but all consumer frequencies are pretty crowded), and many things can interfere with the signal. Maybe try backing in to your driveway, so your doors are switched.)

[ex35tdt]

Good thinking and I did try that too. Backing into my driveway to switch doors but don't see any difference.

At the very least I got a good phone call. My dealer contacted Infiniti engineer/tech and was adviced to order some kind of control module to replace. I believe this will fix it. Oh yeah!

[terrycs]

Good thinking and I did try that too. Backing into my driveway to switch doors but don't see any difference.

At the very least I got a good phone call. My dealer contacted Infiniti engineer/tech and was adviced to order some kind of control module to replace. I believe this will fix it. Oh yeah!

Did the new body control module (BCM) work?

[ex35tdt]

Good thinking and I did try that too. Backing into my driveway to switch doors but don't see any difference.

At the very least I got a good phone call. My dealer contacted Infiniti engineer/tech and was adviced to order some kind of control module to replace. I believe this will fix it. Oh yeah!

Did the new body control module (BCM) work?

Don't know yet. Look like it takes forever for the ordered part to arrive.

[ex35tdt]

Quick update!
BCM replaced 2 months ago and still didn't fix it. I was told they will contact Infiniti head tech and let me know what to do next. After 2 months of keep checking with them now I was told they will replace some parts in the door. Part is ordered. I am running out of patience with them.

[ex35tdt]

Antenna in the driver's door replaced. However, issue is not fixed. Sound like a lemon to anybody?

Not quite sure what I am going to do next. 3 times and won't fix the issue. Any suggestion?

[SteveTheTech]

Doesn't really sound like a lemon...sounds like a misdiagnosed issue.

There is one type of test that needs to be performed in this case. There is an oscilloscope function in the Consult III that might be needed right about now. It sounds like you might be loosing the key verification signal...or it is not being properly received.

The handle request button should lock the doors and selectively unlock them when the key is detected in the following area.


They really need to figure out whether the car cannot see the key or the button being depressed.

In any case how old is the battery in your transponder?

[ex35tdt]

I have it for less than one year. The first thing I did is replace the battery before making my first visit.
Not a single time fails when unlocks it. Just when locking and it's intermittent, about 50/50.

[morgan1130]

I have it for less than one year. The first thing I did is replace the battery before making my first visit.
Not a single time fails when unlocks it. Just when locking and it's intermittent, about 50/50.

If you can unlock/lock the door from the passenger side 100%, then it shouldn't be the key's problem. Sounds more like the sensor problem inside the driver side's door.
Have you test it from the trunk door?

[ex35tdt]

Dealer has replaced everything they can. Total 3 visits. I believe they replace the keyfob controller, ECB unit and some kind of antenna on the driver's side.

[ex35tdt]

At the very least, I see wintech has the same problem as mine.

door-handle-lock-unlock-button-working- ... 94949.html

Unfortunately, he probably sold and left this forum so I cannot contact him to see if he got his car fixed.