Disassembly of a lexus transponder key fob, for battery replacement.
This is a combined wireless transmitter/proximity system for remote lock/unlock and also proximity key detection for vehicle theft prevention.
The battery serves two purposes; it powers the transmitter function, but also serves to boost the range of the RFID function. This permits fall-back operation in pure RFID mode, in the event of battery failure. The fob must be held directly over the start button, in order for the fall-back mode to operate.
Replacing the battery is straightforward, and the part used is an easily available CR1632 battery.
- Post Time: 04-17-16 - By: http://www.rfidang.com