Key FOB Problem?
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,094
Likes: 53
From: Dunkirk N.Y.
St. Jude Donor '07-'08-'09
Key FOB Problem?
This is an 08.
Can't operate door locks or ignition.
Can't open rear hatch with fob in my pocket.
Get the "no fobs detected" message.
Changed both fob batteries.
Car will start or go into accessory mode if fob is in glove box slot.
Can fobs lose their programming?
Is there any antenna or module I can check?
In ten years, I never used the remote lock or unlock on the fob, but
have opened the hatch with the fob in my pocket.
Please don't flame me for that.
We are old and the Bride and I just go for a ride or to a friends house
with no need to lock the car.
Thanks!
Can't operate door locks or ignition.
Can't open rear hatch with fob in my pocket.
Get the "no fobs detected" message.
Changed both fob batteries.
Car will start or go into accessory mode if fob is in glove box slot.
Can fobs lose their programming?
Is there any antenna or module I can check?
In ten years, I never used the remote lock or unlock on the fob, but
have opened the hatch with the fob in my pocket.
Please don't flame me for that.
We are old and the Bride and I just go for a ride or to a friends house
with no need to lock the car.
Thanks!
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
No, fobs do not lose their programming. But sometimes new fob batteries are bad - it happens. As cheap as they are, try to buy a new brand at a different place.
Be sure there's nothing in your pocket with the fob that's interfering with the signal. Also be sure there's nothing charging in the electric outlet in the car console.
Any new devices near the car that put out a strong electronic signal?
Last, but not least, be sure you've got a good strong battery in the car.
Be sure there's nothing in your pocket with the fob that's interfering with the signal. Also be sure there's nothing charging in the electric outlet in the car console.
Any new devices near the car that put out a strong electronic signal?
Last, but not least, be sure you've got a good strong battery in the car.
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,094
Likes: 53
From: Dunkirk N.Y.
St. Jude Donor '07-'08-'09
Car battery is a new NAPA Legend.
Key FOB batteries are new and read out as 3.24 volts on a digital
meter.
This problem was somewhat intermittent last week and permanent today.
Car does function with FOB in the glove box slot?
Thanks!
Key FOB batteries are new and read out as 3.24 volts on a digital
meter.
This problem was somewhat intermittent last week and permanent today.
Car does function with FOB in the glove box slot?
Thanks!
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
Might be the antennas that read the fob's signal.
But just for the heck of it, where is the fob after you get in the car, when you're trying to start the engine?
But just for the heck of it, where is the fob after you get in the car, when you're trying to start the engine?
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,094
Likes: 53
From: Dunkirk N.Y.
St. Jude Donor '07-'08-'09
On the console with the cup holder closed or in my right side pants pocket.
Been the same for close to ten years?
Tried moving the FOB near the glove box with no luck.
Tried moving the FOB everywhere with no luck.
Thanks
Been the same for close to ten years?
Tried moving the FOB near the glove box with no luck.
Tried moving the FOB everywhere with no luck.
Thanks
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Two questions.
1. Can you open both doors by manually pushing the unlock button?
2. When you put in the new battery, did you check the polarity and assure that the little contact tabs were in the right position? They have been known to slip out of place during a battery change.
1. Can you open both doors by manually pushing the unlock button?
2. When you put in the new battery, did you check the polarity and assure that the little contact tabs were in the right position? They have been known to slip out of place during a battery change.
Race Director
Joined: Oct 2007
Posts: 11,367
Likes: 211
From: Edgewood Washington
St. Jude Donor '11-'12-'13-'14-'15
Just a wild guess but, are you sure you put the batteries in the fobs right side up?
You may also want to clean the contacts in the fobs and gently pry them up to make a better connection.
When the fob is in the slot it, the same antennas are still being used. The difference is the fob is right next to the antenna in the slot and the fob will operate with a dead or no battery.
You may also want to clean the contacts in the fobs and gently pry them up to make a better connection.
When the fob is in the slot it, the same antennas are still being used. The difference is the fob is right next to the antenna in the slot and the fob will operate with a dead or no battery.
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,094
Likes: 53
From: Dunkirk N.Y.
St. Jude Donor '07-'08-'09
Two questions.
1. Can you open both doors by manually pushing the unlock button?
2. When you put in the new battery, did you check the polarity and assure that the little contact tabs were in the right position? They have been known to slip out of place during a battery change.
1. Can you open both doors by manually pushing the unlock button?
2. When you put in the new battery, did you check the polarity and assure that the little contact tabs were in the right position? They have been known to slip out of place during a battery change.
Will look at the metal tabs again.
Thanks!
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Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,094
Likes: 53
From: Dunkirk N.Y.
St. Jude Donor '07-'08-'09
I finally got them going after close to 8 hours of on and off playing
around with these FOB's. Bent a few tabs and went over them with
some fine emery.
Getting too old for these problems!
THANKS to all who replied! Have a GREAT week!
Spark 2
around with these FOB's. Bent a few tabs and went over them with
some fine emery.
Getting too old for these problems!
THANKS to all who replied! Have a GREAT week!
Spark 2
Instructor
Joined: Feb 2023
Posts: 136
Likes: 14
From: Plainfield, IL
Some what unrelated, but is anyone with these fob issues, getting the chiming noise when they open the drives door with the ignition key " OUT" of the ignition switch?
I have had this problem since I purchased my C5 3 months ago. I also am having issues with programming my new after market tpms sensors.
I have had this problem since I purchased my C5 3 months ago. I also am having issues with programming my new after market tpms sensors.
Safety Car
Joined: Aug 2017
Posts: 4,924
Likes: 2,334
From: Etobicoke (Toronto) Ontario
Some what unrelated, but is anyone with these fob issues, getting the chiming noise when they open the drives door with the ignition key " OUT" of the ignition switch?
I have had this problem since I purchased my C5 3 months ago. I also am having issues with programming my new after market tpms sensors.
I have had this problem since I purchased my C5 3 months ago. I also am having issues with programming my new after market tpms sensors.