Chip broken in key card - but what is it?

[cblount]

Hi all

Have had the common issue of the key card not being recognised when in the slot in the car.
Took it all apart and found a bad connection to the coil to the right of the buttons and repaired it.
Had to buy a replacement case from Amazon as the mine broke when taking it apart!!
and then--- the top of what I assume is a chip fell off and now whilst the key lets me start the car it won't unlock/lock the doors.
Have been looking unsuccessfully for a circuit diagram to ID the chip,
Wonder if anyone can tell me what the circled part is in the attached picture?
Ah - cant work out how to add a picture to this post!!
So the chip I am looking at is the small two ended one (actually could be a fuse I guess) near to the hole intended for a key ring.

Does this make any sense? - hope so

Thanks

Colin

[bobbaldilocks]

Hi Colin, did you manage to fathom the circuitry within the key card to the point whereby you're now able to remotely unlock / lock the car doors?. I'll have a look at the Haynes but I doubt whether it'll go into that level of detail.
Are you able to upload the link to the site where you sourced your replacement case by any chance?