* Inside the key fob: This is the most common location for modern Jeep Grand Cherokees. The transponder chip is embedded within the key fob itself. You won't see it without disassembling the fob.
* In the ignition switch (older models): In some older models, a separate transponder may be located within the ignition switch assembly. This is less common in newer vehicles.
You shouldn't need to locate the transponder yourself for normal operation. If you're having issues with your key, it's best to take it to a qualified locksmith or Jeep dealership to diagnose the problem. Attempting to disassemble the key fob or ignition switch without proper knowledge could damage your vehicle's electronics.