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Key Fob Battery Replacement DIY
#42
Drifting
Just did this last night for both my '08 fobs. Pop your key loose and slide it out about 3/4 of the way and give it a bit of a twist. Both my fobs popped apart easily. Replace battery with CR-2032 (negative side up). Line everything up (especially the key release tab) and snap together with fingers. My circuit boards stayed in place but make sure all pieces align correctly. As always YMMV, don't force anything and be patient.
#43
Intermediate
Just did my 08 fobs yesterday. The dime and quarter had no effect other than to chew up the inside plastic. Take a sharp thin knife and run it into the crack along one side, making sure it's in to a depth of a couple of mm, then gently twist the knife until the case opens. Easy, fast, and no damage to the case...
#44
Just did this last night for both my '08 fobs. Pop your key loose and slide it out about 3/4 of the way and give it a bit of a twist. Both my fobs popped apart easily. Replace battery with CR-2032 (negative side up). Line everything up (especially the key release tab) and snap together with fingers. My circuit boards stayed in place but make sure all pieces align correctly. As always YMMV, don't force anything and be patient.
#45
awesome thread
just wanted to say "kudos to you man". Excellent. As a newbie vette owner, viewing threads like yours are so helpful and truly appreciated. Ive already learned SO much just by reading what cool "vet vets" like yourself post. thanks again and godSPEED!
#46
Melting Slicks
Thread Starter
#47
Race Director
Member Since: Sep 2006
Location: (S) Walton County NW FL
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#49
Burning Brakes
One more suggestion. Keep two new batteries in the glove box at all times. Uncovered my car the other day for the season. The door would not open. Tried the other FOB, no luck. Unlocked the hatch with the key, pulled the door release cable and opened the door. Off went the alarm, but the start button did not light up green so no start.
Now this was not a major problem since I jumped in the SUV and picked up new batteries at the Battery Plus store. Batteries showed 2.8 volts which they said = DEAD! Went home, replaced the batteries in both FOB's and I'm back in business.
Now that all worked fine because the car was dead in my garage with two other vehicles and three motorcycles available to run up and buy new batteries. No big deal. By the way, new batteries will read 3.25 volts fresh out of the pack.
Now let's assume the FOB died in the middle of Timbuktu. I would have been SOL and going nowhere unless I had fresh batteries in the glove box which I could get to by using the process described in paragraph #1
If your door fails to open on the first try sometimes or the hatch doesn't open now and then without a repeat try, your batteries are weak and replace them or be prepared to start walking.
Now this was not a major problem since I jumped in the SUV and picked up new batteries at the Battery Plus store. Batteries showed 2.8 volts which they said = DEAD! Went home, replaced the batteries in both FOB's and I'm back in business.
Now that all worked fine because the car was dead in my garage with two other vehicles and three motorcycles available to run up and buy new batteries. No big deal. By the way, new batteries will read 3.25 volts fresh out of the pack.
Now let's assume the FOB died in the middle of Timbuktu. I would have been SOL and going nowhere unless I had fresh batteries in the glove box which I could get to by using the process described in paragraph #1
If your door fails to open on the first try sometimes or the hatch doesn't open now and then without a repeat try, your batteries are weak and replace them or be prepared to start walking.
#50
Burning Brakes
I just put a Radio Shack battery in my 3 year old remote (Grand Sport) used a small thin paring knife and took about 30 seconds. Works fine now. Not sure why anybody has problems came apart pretty easy
#51
Racer
One more suggestion. Keep two new batteries in the glove box at all times. Uncovered my car the other day for the season. The door would not open. Tried the other FOB, no luck. Unlocked the hatch with the key, pulled the door release cable and opened the door. Off went the alarm, but the start button did not light up green so no start.
#53
Burning Brakes
Member Since: Sep 2011
Location: Dallas/Fort Worth TX
Posts: 942
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Just did this last night for both my '08 fobs. Pop your key loose and slide it out about 3/4 of the way and give it a bit of a twist. Both my fobs popped apart easily. Replace battery with CR-2032 (negative side up). Line everything up (especially the key release tab) and snap together with fingers. My circuit boards stayed in place but make sure all pieces align correctly. As always YMMV, don't force anything and be patient.
I can't believe the battery died after a little over 1.5 years. I had to put the fob in the glove box just now to get home from the gym b/c car didn't recognize fob. I bought 2 batteries just a few months ago after reading all the fob horror stories and they came in handy this morning!
#55
Melting Slicks
Thread Starter
John
#56
Pro
Member Since: Sep 2008
Location: Chicago Illinois
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I found this thread because I was having problems opening the doors in the '08. It was intermittent so I thought that maybe it was radio interference/Wi-Fi/wireless phone transmitter from my house as even fob #2 (never used) wouldn't work either. Then it wouldn't work when I was well away from the house. Finally just went and bought 2 new batteries, put them in and all's well again. I tested the old ones and fob#1 was at 2.2v and #2 at 2.5v.
I was a little hesitant with all the horror stories all over the web, (having to reprogram, both fobs unusable, broken cases) but they opened rather easily. I used a very small eyeglass screwdriver to get it opened enough to get a butter knife in and do the heavier work.
Thanks for the instructions and tips.
I was a little hesitant with all the horror stories all over the web, (having to reprogram, both fobs unusable, broken cases) but they opened rather easily. I used a very small eyeglass screwdriver to get it opened enough to get a butter knife in and do the heavier work.
Thanks for the instructions and tips.
#57
Team Owner
I found this thread because I was having problems opening the doors in the '08. It was intermittent so I thought that maybe it was radio interference/Wi-Fi/wireless phone transmitter from my house as even fob #2 (never used) wouldn't work either. Then it wouldn't work when I was well away from the house. Finally just went and bought 2 new batteries, put them in and all's well again. I tested the old ones and fob#1 was at 2.2v and #2 at 2.5v.
I was a little hesitant with all the horror stories all over the web, (having to reprogram, both fobs unusable, broken cases) but they opened rather easily. I used a very small eyeglass screwdriver to get it opened enough to get a butter knife in and do the heavier work.
Thanks for the instructions and tips.
I was a little hesitant with all the horror stories all over the web, (having to reprogram, both fobs unusable, broken cases) but they opened rather easily. I used a very small eyeglass screwdriver to get it opened enough to get a butter knife in and do the heavier work.
Thanks for the instructions and tips.
#60
Team Owner
Still on original 2005 battery. Just had it load tested and it passed again. I have minimal options and electronics no HUD, memory seats, or navigation. I wonder if this contributes to battery longetivity?