key fob kaput

[andrewwynn]

Originally Posted by workingonit

I'm hesitant to cut open my only OEM key again, since I cut loose a wire trace the first time, then had to cut it open again to resolder.

This time, I have a specialty Dremel cut-off wheel (instead of a utility knife), and a "helping hands" device (with magnifying glass) to hold it and help me SEE what I'm doing.
Plus, I got a new pair of trifocal glasses yesterday (my first new ones since 2014), so that'll help, too.

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Confirm you do/n't have voltage and buttons work before disassembly. My posts on the topic show exactly where to poke needles to measure voltage and if you press each button you can see the voltage drop if the click switch inside is working. (you can also charge via the pins: i recommend 20mA up to 3.3v).

If the buttons all work but remote function doesn't, use a remote tester found where they sell batteries (my local Home Depot has one) to test if key is sending a signal and if so then re-sync key.

I managed to cut a trace but not with the Dremel: a drill bit. I drilled through to add two cute little M2.5 Allen head screws to hold the keys closed and got too close to the traces on one of the four holes.


–awr–

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