Key Fob Recognized by Vechicle But Buttons Won't Work - Jeep Garage - Jeep Forum

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  #1  
Old 11-27-2015, 10:54 AM
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Key Fob Recognized by Vechicle But Buttons Won't Work

I seem to be having a issue with my key fob buttons only; I can walk up to our 2011 GC with the key fob in my pocket and touch the handles or tailgate lift and the doors/tailgate lock/unlock as the case may be. The key fob is also recognized when starting the engine using the start pushbutton, with no issues. The problem comes into play when I try to use the buttons on the key fob to remote unlock/lock the doors, remote start or remote open the tailgate. I've changed the batteries in the key fob with no luck. The vehicle battery has not been disconnected and the second fob is working with no problems.

I'm hoping someone has ran into a similar issue and found a fix. So far I have not found anything similar and I'd really really like to avoid going to the dealer if I can. Thanks

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Old 11-27-2015, 11:33 AM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

We just had bought a used wk2 and one remote only locked and unlocked. Found out there was corrosion in the key fob. I took alcohol, cleaned it out with old toothbrush and cotton swab. Works great now. Hope this helps.
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Old 11-27-2015, 10:24 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

I'll give it a try and post results; hopefully its something that simple. Thank you.
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Old 11-28-2015, 04:07 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

Cleaning contacts with electronics parts cleaner did no good. I measured the fab battery voltage and it was good but I went ahead and replaced it with a new one which I measured voltage on before inserting in fob. So far no luck with any of the remote push-button functions but the vehicle does recognize the fob as other key-less functions work such as push button start, auto position of seat/mirror/radio/etc., settings. This one has been a head scratcher.
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Old 12-25-2015, 09:26 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

Well its gotten worse, now my fob is not recognized by the vehicle so if I want to drive our GC I have to borrow my wife's key. I guess I'm going to have to see the dealer; what a bummer...
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Old 12-25-2015, 09:57 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

Like all electronics, they do eventually fail, dry solder joint, corrosion as mentioned. push button (only a sliver of stainless steel)fails.
Any auto locksmith or electronics shop can test to see if it's transmitting a frequency. If it is and it's not working it may just need re coding.
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Old 12-27-2015, 08:52 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

does it even not work when you put the key into the ignition?
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Old 12-31-2015, 05:25 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

It would not work even when using the ignition slot vs. the push button. It would come and give me a damaged key error. I did get it to go back to at least recognizing the key was around by replacing the battery once again. The batter I took out was reading 2.97 volts and the new one reads 3.06 volts, I wouldn't think it would matter since the difference was so small but it did.

We went down to the dealership and they did a quick test and verified that the fob was transmitting but to troubleshoot any further would mean taking it in and leaving the fobs and vehicle and the diagnosis would run around $105 with a possible cost of up to $500 depending on what they found and had to repair.

I'm thinking that as long as I can walk up to the vehicle and open it, start it up and drive, I may just live with the way things are as the possible cost of $500 is crazy.
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Old 12-31-2015, 05:41 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

Quote:
Originally Posted by abq.jeep View Post
It would not work even when using the ignition slot vs. the push button. It would come and give me a damaged key error. I did get it to go back to at least recognizing the key was around by replacing the battery once again. The batter I took out was reading 2.97 volts and the new one reads 3.06 volts, I wouldn't think it would matter since the difference was so small but it did.

We went down to the dealership and they did a quick test and verified that the fob was transmitting but to troubleshoot any further would mean taking it in and leaving the fobs and vehicle and the diagnosis would run around $105 with a possible cost of up to $500 depending on what they found and had to repair.

I'm thinking that as long as I can walk up to the vehicle and open it, start it up and drive, I may just live with the way things are as the possible cost of $500 is crazy.
I hope the win module doesn't turn out to be the issue with your vehicle. I know working with Volkswagen we had to replace lots of these modules due to them being defective. But I googled your issue and a person had just that as there reported repair. It cost them over $800 to replace the ignition module . I experience weak antenna issues with my key. I would have it in my left pocket and the key wouldn't be detected until I swapped pockets. I hope this doesn't turn out to be a common issue with these vehicles.
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Old 12-31-2015, 06:04 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

I just got off the phone with a local locksmith company technician that handles key-less ignition remotes as part of their business and he asked me about the battery voltages. When I mentioned that the new battery I just inserted in the fob was reading 3.06 volts and that the old battery was reading 2.97 when it completely stopped working.

The tech told me that Chrysler fobs are very sensitive to low batter voltage and the most likely cause of my issues was that the battery's, both old and new were below 3.1 volts. The tech said a brand new battery out of the package should read about 3.3 volts and the fobs reach a grey area when the battery voltage gets to 3.1 and then start to have issues when the drop a bit lower.

I have to go out later this evening and I'll pick up a new battery while I'm out and then check voltage before installing. I sure hope that this is the solution. Good thing is that the tech said they can diagnose issues with the fobs and they charge much, much less than the dealership but he couldn't give me a quote until he took a look at it but he felt fairly confident the issue would be resolved with a battery that was at the right strength.

I'll post my findings after I try the techs suggestion.
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Old 01-03-2016, 07:29 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

New battery with correct voltage, 3.29 vdc, did not fix the buttons not working problem. Tried cleaning the contacts, verifying that all contacts were making and still no luck.

My next step will be to take it to the locksmith and see what they can find and hopefully they are able to fix it without it costing me anywhere near what the dealerships prices were expected to run depending on the fix.

My other option is to just live with it since I can still use the keyless system just not the remote button features on the fob but it bugs me to have a vehicle that cost this much and not work correctly...
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Old 01-09-2016, 10:21 PM
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Re: Key Fob Recognized by Vechicle But Buttons Won't Work

So I took the fob to the lock smith, they determined there was no problem with the fobs transmission signal strength and after taking a look at the circuit board they verified it was clean and they saw no problems with the contacts on the buttons which was confirmed by the signal strength meter as they pressed each button. But still no luck with any of the functions operating remotely so they felt it could be something going on with the receiver on the Jeep itself so I asked the tech if there was anyway that reprogramming the fob would do any good and the tech felt it was definitely worth a try, nice thing is they charge $39 vs. the $79 or more the dealer does so the tech went out to the jeep, plugged in, ran some diagnostics and then came back in and said during the process the fob started working. He was a bit stumped as to what could have caused the change as he hadn't started the re-programming process and hadn't really done anything but my fob is now working fine. The key shop also did not charge me as they said they didn't really fix or program the key. I wanted to pay them for their time as they were very friendly and helpful as can be but they said this was a good will repair and they asked that I remember then next time that I was in need of a locksmiths services.

So good news is the fob is working again but the bad news is I still don't know why it stopped in the first place; go figure...
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