Hi all,

I was wondering if someone could help me here.
I have a Smart Key Card for my RX-8 and it wasn't working, so I took it apart and found that the battery connectors were broken and I soldered it back together, and now powers on. Great!
But then I found out that the functions of the keys were very hit and miss, and after some troubleshooting, I found out that one of the components may have broken solder joints (because the card works well when I put pressure on it. It's the square silver component above the broken resistor).
And while I was trying to reflow the solder points on the component, I screwed up by making my soldering iron too hot and melted away one of the tiny resistor that's next to it.
As shown below in the red circle, that is the spot where the resistor fell off and I need help identifying the value of the resistor there. If anyone can help my particular issue, that would be amazing. Thanks!

 

An update just for the record:

I've bought another card key from Ebay. I've opened it up and carried over that component to my original card key, et voila, it works!
So it's actually NOT a resistor, but a capacitor. If I've measured it correctly, its a 0402-sized 450pF capacitor.
I've ordered couple of 430pf and 470pf (there wasn't any 450pf capacitor on Mouser) capacitors to put back on the donor board to make it usable again.

I assume I can go to a Mazda dealer to program the donor key card that I will fix, but I recently lost the emergency key (physical key)
Does anyone know if Mazda dealer will be able to cut out a key from a blank without the original key?

Thanks!