2006 G35 keyless problem
 

So I have a 2006 g35 and my keyless remote was working just fine, then one day just completely stopped working, brand new batteries in both sets, and nothing is happening still. What sort of things can I check for, really annoying having to use a key, rather not bring it to the dealer if I don't have to. Thanks guys.

i'm assuming the car is running fine?

Yes car is running great, no idea what would cause this.

Aside from keyless entry do any of the buttons work - can you open the trunk by pressing the button on either fob? I can't think of a way to test the fob itself but check those new batteries to be sure they're good (I've bought dead watch batteries before...).

Beyond that it's possible your car has somehow lost the registration for your fobs. There are a few onboard computer systems involved (BCM, CAN, LAN...) which would make that fault difficult to trace. The dealer's Consult-II might be the quickest (and only) way to figure it out.

Good luck

Give this a shot.

Nothing works on the remote, pretty much tried 3 new batteries, and nothing. Both sets of remotes. Think it has something to do with the reciever in the car, but gonna try the reprograming video, and see what happens.

K so I tried instructions from that video, no luck, any other suggestions guys?

If you know the fob batteries are good and the above programing routine didn't work then something is certainly amiss. Look at fuses first. There are some under the hood and some in the passenger compartment. It looks like fuse #77 in the box near the battery, and #1, #12, #18, & #19 inside are all involved. If they all look good, and this is the only thing in the car that isn't working, then just FYI the "Intelligent Key Unit" (black box) is located behind the glovebox (see "F" below). Have you had anything done in that area that may have knocked connections loose? Like changing the cabin filter?

Hey, thanks I will check all the fuses and see if i can find the intelligent key unit, and check and see if it's connected well. Is it connected kinda like a relay, just kinda plugs in? Never had anywork done in that area, but who knows maybe somehow it got knocked out. I will try that asap, and let u know, really appreciate all the help, thanks!

so kept trying the reprogram squence dunno if this meanse anything, but when i put the key in until hazards flash, they will flash but they don't have turn to acc. and press the button. Also the intelligent key unit, is it visible without removing glove box? saw somethin that may resemble it, but unsure, everything looked good. Thanks.

Well, at that point in the video when you turn the key to the ACC position and press the remote button the fob is supposed to transmit and the car is supposed to receive the radio signal. So if one half of that isn't happening then the car won't flash the confirmation code and the remote won't be registered because the car hasn't "heard" the transmission... So one side of the communication isn't happening.

So again the order to check is:

#1. Battery in fob (you say you know but since there are no indicators on the fob itself I recommend checking the battery with a volt meter, and be sure it's not in upside-down.
#2. Fuses, which you did
#3. I believe you can see at least the corner of the black box from underneath if you remove the panel above the passenger's feet. But it is unlikely anything has simply disconnected because all the plugs lock into place...

I really think it's dealer time unless anybody else has any ideas. This is a weird failure which involves several of the car's computers and the quickest answer would be to have it plugged in and diagnosed.

Hope you get it figured out.

Ok so I brought it to the dealership, the remote works, but car is not getting any signal from it, they reset the bcm, and still nothing, so thinking its the antenna box? Anyone know where I can get one for cheap? Really want this fixed.

Huh. Such a weird failure. Nobody else in here seems to have had the same experience. But, this is one of the car's black boxes and sometimes they just have a cold solder joint or bad chip or something...

Your car has like 6 antennas plus 3 outside "request" buttons on the doors and trunk. All these are wired to the "Intelligent Key Unit" that I showed you above. Your process of elimination seems to point to that as being the faulty piece so that's probably the black box you need. I'm no pro though so don't go by what I say. If the dealer connected their Consult-II they should have been able to pinpoint exactly where the fault was. Sounds like they maybe didn't tell you all the details...

If I were you I'd call the Dealer's parts department, ask them to look up the price for an "Intelligent Key Unit" for your car and ask for the part number (you know, to save THEM time when you call back to order it...) I would expect their price to be crazy expensive but you never know, it might not. Once you have the part number you can do some online searching. Your cheapest route would be auto salvage. If you could find a wrecked '06 somewhere you could probably grab that box for cheap...

Sure hope you can get it to work, the keyless thing is a great feature. Good luck!

They also said to me that I didn't have the intelligent key box, as it did not come with this model. So I'm assuming the box behind the glove box would be the keyless reciever etc. Anyone know a site to get these from? Dealer said they are about 250 from them.

Oh sheesh. I've been spouting all this info for the Intelligent Key and you have the "Remote Keyless Entry" system, don't you? Your fob looks like the first pic below?

OK, sorry about that. In that case it's back to your fuses first. In the passenger compartment, the fusebox by the driver's footrest - check #1, #6, #18 and #21.

If those are good head back under the hood again in the "fusable links" box in front of the battery (see second pic below) check that 10A fuse and the 50A fuse (although if the 50A were blown I don't think anything would work).

If those are good there are a few more in in the box to the left of the battery (see 3rd pic) as indicated #71 and #78.

Again, sorry I misunderstood. It would be GREAT if it were just one of these fuses hanging you up!

The receiver is near the same spot as the I-Key unit. Manual shows this:

ok awesome, is there any way to visually check for faults on the reciever? Like solder joints? how hard is it to remove the casing?

No idea man, it's probably pretty sealed up. The black boxes aren't built to be serviced, just swapped out.
But seriously, look at those fuses before you do anything.

Ya forgot to mention, all the fuses were checked, and they are good. So im pretty certain it's the reciever, wish i knew someone with a car like mine, just switch them to test my theory, haha. Thanks a lot for all your input, very helpful.

Hey, is there any resolution to this yet? I now have nearly the same problem on my '06.

I know all my remotes work since I also programmed them to control my Frontier, no problems, but I replaced the remote battery at first anyway. I also replaced the vehicle battery about a month ago before this started happening, and I did an ECU reset at that time.

Sometimes I can only unlock the driver door on the G, not all four doors or open all the windows. With the door open I can hit the unlock button on the door so others can get in and then I can also operate the fuel door or outside trunk button, so I don't think it's any of the actuators. It does seem like a receiver issue for my car; 50/50 (or less) whether it will lock/unlock the car.

I should probably try to reprogram them all again, but doubt things will change. Thanks for the fuse ideas, I'll check them this weekend. Anything else?

Any luck solving this issue guys, I have the same problem

omg, thanks for that video. I was starting to freak out. I've been getting my car ready to sell tomorrow and for the past two weeks it seems like as I fix something, something else screws up. I had just got done trying to reset my airbag light(loose harness wire under seat) when I noticed my keyless entry no longer worked.

I took my car in for the passenger airbag recall and had them check out the keyless entry system. They are baffled. Tried to blame it on the wrong battery because I used a higher capacity CR2032. They tried to reprogram the keys and it didn't work; they had to reprogram them via the BCM, but nothing really changed. It now works most of the time, and sometimes very slow like hold the button down for a second before the passenger doors unlock, but most of the time they don't. If I unlock the driver door first, then the trunk won't work. They are clueless and just to be safe, didn't even send me a satisfaction survey.

Wow, MarkG, that's a drag. Such a weird problem and infuriating because it sometimes works and sometimes doesn't. They used their Consult-II and still couldn't find a problem?

I guess it's possible something is off with your controller unit, like it's slightly out of spec? I think it (and/or the BCM unit) "listens" for a series of pulses from the fob to decode what the request is, maybe it can't count... It almost makes you want to find somebody parting out a G so you could swap in the controller unit just to see. It's not hard to reach anyway.

Good luck. As long as you can get in and start the car that's the main thing.

I changed my control module and everything works great now, try getting a good used one, new is a rediculous price
Gl

Well, I assume they used Consult because they said the only way to reprogram the remotes was through the BCM directly. The method in the video didn't work for them, but the remotes still work fine for my Frontier. Maybe there is a conflict with them being programmed to two vehicles at once?

Speg80 - Your control module... is that the receiver? Where did you find it?

I had the same problem programming my remote and was told the same from the dealer but all worked well after changing the receiver(control module).
Are you asking where did I find a used one or where is it located?

Yes, where did you get a used one, like a junkyard or whatever. And to make sure we're talking about the same thing... receiver vs. controller. This will also help me if I need to go back to the dealer. Thanks.

I got the receiver from a part out in the forums, I believe the receiver and controller is the same unit

I have the part number if you need

Thanks - I might give the dealer another shot someday as I have an extended warranty with them. At least I have more knowledge of what the most likely failure is now.

Tonight in the dark, I unlocked the driver's door from about 100 feet away. So range doesn't appear to be the issue. But it wouldn't do anything beyond that... no trunk, no passenger doors. Hmmm.

SOLVED!! I read a post on Club Frontier and WTF... it fixed my problem.

Turns out that my LED dome lights were interfering with the FOB signal. It would unlock the driver's door, and then would do nothing because the interior lights come on and block the RF signal. When parking the car, the fob didn't work because the lights were on until they time out.

So I pulled the DE3175 LEDs out of the console above the dash and it all came back to life. I put some newer LEDs in I bought for my truck and it still works. I feel like an idiot because it took over a year but hey, it's all good now.

im having a similar issue. today i was swapping out my shifter assembly and now the driver side FOB sensor is not detecting my fob. all outside sensors work and starts the car if put th efob close to under the dash or around the passenger side but nothing on the driver side. wtf did i do??

Wow, MarkG what a find! The circuit that runs the dome lights is looking for incandescent bulbs and the fade-in / fade-out programing may not be play nice with some LEDs. But I never would have suspected this would cause interference with the FOB communications. That's amazing. Might need to make this a sticky...

Demo401, there are two antennas in the cabin. One under the dash near the blower motor and one at the back of the center council. (see the pics below) It's possible you accidentally disconnected the one in the center council while working on the shifter. (Look for a green and red wire in a shielded cable...)

I have the same problem with my remote. I have tried reprogramming the remote. After the insert and pull-out key step, I did heard the 2 clicking sound and the flashing sign. However, after I click any key of the remote, there was no clicking sound at all. I guess that's why I cannot reprogram my fob. Does anyone know what's the issue? BTW, I have checked all the fuses mentioned above.

I have the same problem. I can't reprogram my car. I have tried the key thing and no dice. I have inserted the key in 6 times and the hazards never flash so I guess it's not working. I'm going to check the fuses mention above. I hope it's just a fuse, because the dealer told me it's 7 to 8 hundred dollar to fix. I told them they are smoking.

I don't mean to bump up an old thread but my 2006 g35 coupe key fob doesn't work effectively as well. I have changed the battery in the key fob numerous of times and it still doesn't work properly. Sometimes I have to press on the key fob button multiple of times before the car unlocks or locks. The car is also equipped with buttons on each side of the door handles. Sometimes when pressed, it works sometimes it doesn't as well. Have you guys had problems like this before too? Should I check the fuse as well? I want to try fixing it myself before taking it to the dealership, which is quite pricey for a student who just graduated.

My '06 coupe doesn't have these "buttons on each side of the door handles" ? Is that an intelligent key feature (push button start)? It's possible your fob buttons are going out. You can disassemble the fob and put a TINY bit of silicone grease between the rubber dome and the contact but honestly you can buy a new fob for under $20 and reprogram it yourself to see if it fixes the issue for a lot less hassle. Autozone carries a replacement fob that is almost 100% identical as the stock one, it just doesn't have the same fine print writing on the back of the fob but the shape, feel, color, button layout are an exact match (except intelligent key).

Other components that might be failing, transponder in the fob might be going out. BCM antenna inside the vehicle might be going out. BCM itself might be going out. It would be worth the phone call to your local Nissan dealership to get a price for a diagnostic of the system to verify which component is failing.

You could also try reprogramming the fob you have (except intelligent key).

http://infinitihelp.com/diy/common/i...am_key_fob.php