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  #49  
Old 03-27-2011, 06:45 AM
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Re: 2nd Key FOB battery died

Add another dead fob battery for me. Had the Overland 3 weeks to the day with only 500 on the odometer and when I went out this morning, nothing worked. Went back in the house and luckily had a spare battery sitting around. Now everything works.

Hopefully it is just a cheap Chinese battery (I forgot to look before I threw it out), and not a regular occurrence. Anyone in this thread have it happen to them again?
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  #50  
Old 03-27-2011, 03:29 PM
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Exclamation Re: 2nd Key FOB battery died

This is interesting. I was frequently getting a "key not detected" warning and was cursing the fact that key fob buttons were unresponsive. I returned the vehicle to the dealer for an unrelated problem (Service Engine Light on, requiring a replacement oil pressure switch) and the diagnostics picked up the low battery power in the fob.

My Grand Cherokee is five months old and has 12,000 km on the odometer.



Quote:
Originally Posted by rybocf View Post
Ok, this is starting to get annoying.

About 3 weeks ago the battery in FOB #1 died while I was out of town. Since I was uneducated about what to do it was a total PITA.

Anyway, I got back to town, replaced the battery (everything seemed to work) but I had switched to FOB #2 because it had juice.

Last night FOB #2 died. I swap for FOB #1 with fresh battery and head off to work this morning.

WTF...witin 6 weeks of owning my WK2 the battery in BOTH key FOBS died (about 3 weeks of use each). Is this jus a coincidence??

Please someone tell me these things are like new printers and they just put the "starter" ink in there...

Do I need to stock these batteries? Anyone else seen/heard of this?

Thx
-Ryan
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  #51  
Old 03-27-2011, 03:47 PM
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Re: 2nd Key FOB battery died

I bought a couple of spare batteries today. It's cheap insurance.
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Old 03-27-2011, 08:11 PM
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Re: 2nd Key FOB battery died

The batteries I bought and put into the FOB are lasting longer than the ones that came from the factory, I have yet to have my replacement die yet.

I will say this though, last night my wife came in and informed me that the jeep's lights were blinking and the doors were locking/unlocking. It turns out the buttons were being pressed in my pocket. I wasn't doing anything crazy, mostly playng with the kids, but it does make me think about the possibility that this is draining the battery prematurely.

-Ryan
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  #53  
Old 03-27-2011, 08:45 PM
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Re: 2nd Key FOB battery died

The first keyless FOB system I ever came across was the Kawasaki KIPASS system in my '08 Concours 14 ABS (and in my very new 2011!). Much debated, much maligned, with positives and negatives. The FOB is always transmitting a "challenge" signal, looking for the right code matchup from the vehicle's receiver. One of the things we noticed with the KIPASS FOBs was that when they were left near other devices that emitted even a moderate amount of RF energy, the FOB transmitter expended more energy and the batteries went down fast. Cellphones, computers, medical devices, cordless phones, audio systems. . . all of this stuff had a noticeable influence on battery life. The ZG1400's manual clearly warned about leaving the FOB near these sorts of devices. . . so I'd make sure to never put the FOB in the same pocket as my cellphone. If I were to leave the FOB near enough to the bike to activate the "strong challenge-connect" mode, the battery might drain down overnight! Gets me thinking there may be similar issues at play with the WK2's PKE system? Guess I'll find out in person in about 2 weeks when my Summit's due in.
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  #54  
Old 03-28-2011, 09:01 PM
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Re: 2nd Key FOB battery died

Mine did something wierd a few days ago. I walked up to the car and grabbed the door handle with the fob in my pocket and it unlocke just like every other time, and then when I sat in the car, put my foot on the brake and pressed the start nnbutton, it chimed and the display on the dashboard said "key not inside vehicle" or something like that. I got out and back in and tried it several times with the same result. I opened up the key fob and removed the battery and reseated it and put it back together and it started working again. It's been fine ever since. I have two packs of spare batteries now, one in the can and one in the house.
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  #55  
Old 03-29-2011, 06:31 AM
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Re: 2nd Key FOB battery died

Quote:
Originally Posted by Nouveau Redneck View Post
Mine did something wierd a few days ago. I walked up to the car and grabbed the door handle with the fob in my pocket and it unlocke just like every other time, and then when I sat in the car, put my foot on the brake and pressed the start nnbutton, it chimed and the display on the dashboard said "key not inside vehicle" or something like that. I got out and back in and tried it several times with the same result. I opened up the key fob and removed the battery and reseated it and put it back together and it started working again. It's been fine ever since. I have two packs of spare batteries now, one in the can and one in the house.
Good thinking on the spare batteries. I now a 5 pack sitting at home. Sounds like your battery was on the way out, or there was some type of "misfire".

Mine is working pretty well now, my only weirdness is sometimes when trying to lock the door with button on the handle it blinks but doesn't lock. When this happens I have to press the button 3-5 times before it finally decides to lock. Not sure what issue is causing this, but it's a minor annoyance. It does force me to check to make sure the doors actually locked.

-Ryan
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Old 03-29-2011, 12:32 PM
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Re: 2nd Key FOB battery died

Is there a way to use the Emergency key to lock the FOB in vehicle? I would like to be able to take the emergency key and clip it to life jacket when kayaking and not need to bring along a waterproof container with the fob in it.
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  #57  
Old 08-29-2011, 04:12 PM
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Re: 2nd Key FOB battery died

Quote:
Originally Posted by rybocf View Post
From personal exerpience only it DOES work. I have had 2 FOBs die on me while away from a working FOB. Here's the procedure:

1. Take out hidden key from FOB
2. Use it to unlock door.
3. DO NOT OPEN DOOR YET (due to alarm sounding).
4. Put Key back in FOB.
5. Open door and quickly get in (because the alarm goes off)
6. Pull start button out, put FOB (not the key ) into the start button recession and turn like a normal key.

This works just fine with a dead FOB. If it didn't it would be moronic engineering to strand people because they key FOB battery died.

-Ryan
I was stuck in this situation 50 miles from home yesterday - unfortunately when I tried #6 - I got nothing. The dash display would say normal "foot on brake and turn/push to start" but nothing happened when I did. On top of it the fob (no, not the key) became stuck in the ignition, transmission stuck in park, and sunroof stuck open. Strange though, no alarm the whole time - and some other electronics worked (seats/doors/hatch/lights..). I had to have it towed to the dealer and cover it with a tarp (due to the open sunroof and dealer closed on Sunday) - and since it was stuck in park, loading and unloading it to a flatbed truck was not a pretty thing, each screech of the tires made me hurt. Once home I tried using my wifes fob, thinking it might free up the other one or at least allow the jeep to start so I could close the roof but no dice. Just got off the phone with service and he said he believes it was a "computer glitch" that forced it into a "anti theft state" when I attempt to start it up manually with the fob in the ignition. Though I did exactly what the manual said - had coincidentally read this thread beforehand too. Don't know what the heck I'm supposed to do other than stock up on batteries if this holds true, I'll talk to them tomorrow when they finish up. Had this for less than 6 months
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Old 08-30-2011, 06:40 PM
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Re: 2nd Key FOB battery died

Quote:
Originally Posted by jibbs1234 View Post
I was stuck in this situation 50 miles from home yesterday - unfortunately when I tried #6 - I got nothing. The dash display would say normal "foot on brake and turn/push to start" but nothing happened when I did. On top of it the fob (no, not the key) became stuck in the ignition, transmission stuck in park, and sunroof stuck open. ................
Just picked it up from the dealer and it turns out it was not the keyfob battery being dead, but an issue with the WIN (wireless ignition node) module. There was a TSB for this not long back which says they should have been able to flash it - but my receipt (under warranty) says they replaced the WIN module and EXCESS module - no clue what the EXCESS module is - anybody?

So I misdiagnosed it as a dead keyfob battery, tried to manual start the ignition with the keyfob, which somehow got stuck - the service tech i talked to earlier mentioned it triggered the security system? - relation to the EXCESS module? Not sure. Picked up after hours so have to call for clarification tomorrow.
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  #59  
Old 09-27-2011, 08:29 PM
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Re: 2nd Key FOB battery died

My key worked fine in the ignition after the battery went dead. Both were dead in less than 9 months.
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  #60  
Old 09-30-2011, 04:02 PM
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Re: 2nd Key FOB battery died

Wikipedia says: The BR2032 battery has the same dimensions [as the CR2032], but a slightly lower nominal voltage and capacity. It is highly suitable for extreme temperatures, and is operable in temperatures as high as 85C or as low as –30C. It also has a much lower self-discharge rate. Using a BR2032 in place of a CR2032 will not damage equipment, and in most cases will function properly.

Lithium-manganese dioxide Lithium-carbon monofluoride IEC name CR2032 BR2032 ANSI/NEDA name 5004LC 5004LB Typical capacity 225 mAh 190 mAh Nominal voltage 3.0 V 2.8 V The CR type is more common in consumer applications than the BR type, which is often used for more critical aerospace, military and medical applications.

http://www.swcomputingservices.com/batteryorder.html says: So what's the difference between a CR2032 and a BR2032?

Most Lithium cells have a nominal terminal potential of 3 volts. Like other primary cells, however, their voltage gradually diminishes as they discharge. Because of somewhat different design, the BR-type cells yield more uniform voltage over most of their useful life, but near end of life, their terminal voltage falls precipitously. CR-type cells, on the other hand, exhibit a more gradual decline in voltage over most of the discharge interval, and thus they may give somewhat longer service in circuits designed to tolerate a wide range of terminal voltage. They also cost less than equivalent BR-type cells.



Has anyone tried replacing the key fob's CR2032 with a BR2032?
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