Don't start on me
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,300
Likes: 3,199
From: Oro Valley Arizona
Don't start on me
Wife leaves this morning comes back in says she is getting a no FOB detected message. So it won't start. Mr Fixit is he up to the challenge? Got the 2nd FOB and off she went. 
He is. 
Assume the battery is dead in #1? 
Built 12-10-13 so 3+ years. Our C6 was 8 years old when it left and never replaced the batteries. My F150 is 10 with the OEM's in the FOB.
He is. Assume the battery is dead in #1? Built 12-10-13 so 3+ years. Our C6 was 8 years old when it left and never replaced the batteries. My F150 is 10 with the OEM's in the FOB.
Le Mans Master
Joined: Aug 2000
Posts: 6,486
Likes: 1,659
From: Las Vegas NV
It's always a good idea to change batteries after a few years, just as a matter of preventative maintenance. Cost is what -- $4? $4 and 3 minutes work to change it every few years doesn't seem that burdensome.
However, there may be an alternate explanation:
If this was a 1-time event, it could have been the fob's proximity to her cell phone, or other electronic device.
For example: sometimes, if I have the fob in the same pocket as my cell phone, it can't be detected. Remove cell phone or fob from pocket -- presto -- fob is recognized.
However, there may be an alternate explanation:
If this was a 1-time event, it could have been the fob's proximity to her cell phone, or other electronic device.
For example: sometimes, if I have the fob in the same pocket as my cell phone, it can't be detected. Remove cell phone or fob from pocket -- presto -- fob is recognized.
Burning Brakes
Joined: May 2015
Posts: 891
Likes: 418
So my key fob being this wqs my spare slipped out the key socket while i was going home and didnt realize till the next morning.
Next morning I was super lucky to find it on the street but it was friggin battered and it was wet. I quicky put it in a bucket of rice and let it sit till i went home.
When i came home i pressed the buttons and the car lights up. Woohoo! The next day I tried to take the car out but the fob wasnt working. Opened it fidget with it and still no luck.
Went to rite aid and bought 4 new 2032 batteries replaced it and it worked! By now i thought ok this was the end of it. Next morning again the fob didnt work! Replaced another battery and once again it worked again. No idea wth was the problem but it seems like the battery dies every 30 minutes or something. When i replace the battery with a old battery it would miraculously work too.
I am still stumped till this day but i did bring in the keyfob to the dealership and without question he ordered me a new one under warranty which i didnt expect that keyfobs were under warranty. Pleasant surprise
Next morning I was super lucky to find it on the street but it was friggin battered and it was wet. I quicky put it in a bucket of rice and let it sit till i went home.
When i came home i pressed the buttons and the car lights up. Woohoo! The next day I tried to take the car out but the fob wasnt working. Opened it fidget with it and still no luck.
Went to rite aid and bought 4 new 2032 batteries replaced it and it worked! By now i thought ok this was the end of it. Next morning again the fob didnt work! Replaced another battery and once again it worked again. No idea wth was the problem but it seems like the battery dies every 30 minutes or something. When i replace the battery with a old battery it would miraculously work too.
I am still stumped till this day but i did bring in the keyfob to the dealership and without question he ordered me a new one under warranty which i didnt expect that keyfobs were under warranty. Pleasant surprise
Drifting
Joined: Sep 2009
Posts: 1,440
Likes: 314
From: PA
Kind of a related question, will it hurt anything to keep the fob in the slot under the column when driving? Will it kill the battery in the fob or cause any other issues? Just curious as this seems like a convenient place to put the fob instead of my pocket when driving the car.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,954
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Kind of a related question, will it hurt anything to keep the fob in the slot under the column when driving? Will it kill the battery in the fob or cause any other issues? Just curious as this seems like a convenient place to put the fob instead of my pocket when driving the car.
HOWEVER....
It is best to just keep the FOB in your pocket or purse (depending on how you identify for the day) and go about your day!
Elmer
Melting Slicks
Joined: Jul 2004
Posts: 2,216
Likes: 285
From: Ten Mile TN
My FOB for my 14, at 3 years an 1 month started to fail. At first it would not let me just walk up and open the door, had to press the Fob button. A few days latter wouldn't work at all. Went and got my wife's FOB, and I had to press the button for the door to unlock. Drove to store and got new batteries for both FOBs. Every thing worked correctly after.
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Le Mans Master
Joined: Sep 2003
Posts: 8,847
Likes: 795
From: Longview Texas
This is the first car I have had where the FOB goes dead even if it is not being used.
My FOB went dead, and when I went to use the second FOB that had never been used, it was also dead.
Both lasted 3 years (April, 2014)
My FOB went dead, and when I went to use the second FOB that had never been used, it was also dead.
Both lasted 3 years (April, 2014)
Drifting
Joined: Mar 2014
Posts: 1,767
Likes: 338
From: San Diego CA
Originally Posted by cberistain
anything special we should know about replacing the battery? mine is working fine 2014 but probably a good maintenance practice.
Pro
Joined: Oct 2005
Posts: 680
Likes: 17
From: Moulton Alabama
Cruise-In 8-9-10-12 Veteran
These fobs are continuously transmitting unlike the C6. Mine began to die less than 3 years. DIC said "service push button start system". Replaced battery. All is good.
Team Owner
Joined: Apr 2013
Posts: 26,232
Likes: 4,357
From: Chirper Island
They are only active (transmit) when a button on either the car or the fob is pressed, or when exiting (door opening and closing), and the car quests to see if a fob is still in the car.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,980
Likes: 12,383
From: NE South Carolina
Checked battery when I had occasional difficulty opening the car. It read just in the "Good" range. Still had issues, then one day soon after the no FOB warning. used the slot and bought a new battery that read fully in the "Good" range on a meter that loads the batteries and has work very well for years. All was fine.
Pro
Joined: Oct 2005
Posts: 680
Likes: 17
From: Moulton Alabama
Cruise-In 8-9-10-12 Veteran
No, these are not continuously transmitting. They work exactly the same way as the C6 fobs. The fob never quests.
They are only active (transmit) when a button on either the car or the fob is pressed, or when exiting (door opening and closing), and the car quests to see if a fob is still in the car.
They are only active (transmit) when a button on either the car or the fob is pressed, or when exiting (door opening and closing), and the car quests to see if a fob is still in the car.
Last edited by stevedun; May 12, 2017 at 05:06 PM.
Team Owner
Joined: Apr 2013
Posts: 26,232
Likes: 4,357
From: Chirper Island
Many things can affect fob battery life. A lot depends on how passively or actively you use your fob. Do you lock or unlock the car or pop the trunk with the fob, or do you use auto lock/passive entry? Do you lower the convertible top with the fob or remote start the car?
It could be something as simple as a sticky button that activates the fob regularly.
It could be something as simple as a sticky button that activates the fob regularly.