Think City Programming Failure Due to Frequency Mismatch

This cause is confirmed by verifying the FCC ID or frequency label on the original key fob versus the replacement hardware. A mismatch between the vehicle's receiver frequency (e.g., 315MHz vs 433MHz) prevents the remote functions from pairing with the body control module. Check the vehicle's build plate or original key casing for the specific frequency rating required for the regional market.

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