Transponder

Transponder:

The ignition key head contains the transponder. The transponder emits a magnetic field. This magnetic field interacts with the magnetic field generated by the coils of the theft deterrent module creating a voltage which is read by the ECM through the theft deterrent module. The transponder is a small magnet. Therefore, it does not require battery power. The transponder never requires replacement under normal operating conditions.

The ignition key head (1) contains the transponder (2). The transponder does not require battery power. The transponder (2) never requires replacement under normal usage. Service the transponder (2) and the ignition key (1) only as an assembly. Reprogram the system with a scan tool when replacing a key.