key battery

[ant797]

got all the information i needed from this thread including a cheap battery where to get it thanks everyone

 

[Juddy73]

Hi guys, can’t find the answer I’m looking for here so hoping someone can help. I bought a replacement cover for my battery from supercheap, still doesn’t work. The battery has 2.95 volts so you’d think that would still be enough for a 3v battery. Any ideas ? TIA

 

[Trevor loves holden.]

Hi guys, can’t find the answer I’m looking for here so hoping someone can help. I bought a replacement cover for my battery from supercheap, still doesn’t work. The battery has 2.95 volts so you’d think that would still be enough for a 3v battery. Any ideas ? TIA

So how is a shell going to solve a transmitter from not working, you need to explain the problem from the start and why did you change the shell?

 

[Juddy73]

So how is a shell going to solve a transmitter from not working, you need to explain the problem from the start and why did you change the shell?

 

[Juddy73]

The buttons were missing from the shell, so I bought a new shell and it still didn’t work, so I figured the 3v battery must have been flat so was going to change it as I thought that must be the problem. I put a multi meter on it and it has plenty of power so I’m unsure why it won’t open my central locking. The car starts ok.

 

[Trevor loves holden.]

Have u checked the fuse, did u test the volts pressing a button. Is it the original fob, has the fob being wet?

 

[Juddy73]

Have u checked the fuse, did u test the volts pressing a button. Is it the original fob, has the fob being wet?

No idea about the fob being wet or original as I have just bought the car. No I haven't tested the volts when pressing the button, and no I haven't check for a blown fuse. Will look into these things. Thanks Trevor.

 

[Trevor loves holden.]

No idea about the fob being wet or original as I have just bought the car. No I haven't tested the volts when pressing the button, and no I haven't check for a blown fuse. Will look into these things. Thanks Trevor.

Well that makes it hard then, could have a non matching BCM and fob.

 

[krusing]

Hi guys, can’t find the answer I’m looking for here so hoping someone can help. I bought a replacement cover for my battery from supercheap, still doesn’t work. The battery has 2.95 volts so you’d think that would still be enough for a 3v battery. Any ideas ? TIA

That [2.92V] could only be a surface charge, where under load [when you press the button] it could drop to 1.5 > 2 Volts,
So it does not not have enough current to operate the Key Head.

 

[krusing]

30 far out its a cr2032 which jaycar sell for $3.25, you don't need to have the exact one just unpick the spot-weld on battery both sides then solder the 2 tabs from the new button battery on to the original tabs you unpicked and trim off any overlap.
When pulling apart remove 2 screws and blade be careful not to damage the responder that contacts your slipring, I use a butter knife and put it in where the key head sets and twist to pull a part, if you crack the plastic you can always buy the shell at auto stores but cheaper on ebay, if you get it apart undamaged then just superglue it back together.
https://www.jaycar.com.au/cr2032-vc-3v-pcb-mounting-lithium-coin-battery/p/SB1762

You should not apply heat to a lithium batteries,
as they have the potential to explode, and with doing that,
you could lose your eyesight,
Losing your eyesight worth it for a $40 Key Head, and the cost of programming a New Key Head in.
As mentioned earlier in the thread, refusal to pay $200,
If you pay $200+, your being ripped off.
You should be able to get a new [Genuine] Key Head for under $100.