Image shown is the location on a 2005 Dodge Ram Truck. The location varies depending on year/model, but it is in the same general area under the driver's side dash on all models, since it's required for OBDII standards.
2. Ground PIN 1 of the OBD2 Connector by taking solid wire or paper clip and connecting it from PIN 1 to PIN 4. PIN 4 is Ground so you can just short pin 1 to 4 and it will be grounded.
Grounding pin 1 tells the system you are ready to reprogram it.
3. Close all of your doors. Turn the key to ACCESSORY position and then back to the OFF position [The accessory is 1 position forward]
NOTE: Do not crank engine in this step [If engine cranks accidentally start back at step one]
The power door locks will Lock/Unlock. This lets you know that the system is ready for reprogramming.
4. Push a button any button on the first key fob to be programmed.
If you have two (2) or more total key fobs, then press a button on the second and each additional fob within one (1) minute of pressing a button on the first fob. [All fobs, including any existing fobs must be programmed at the same time]
If you only have one (1) fob or after all you have finished programming all fobs, press a button two (2) more times to signal that you have programmed all fobs.
The doors will Lock/Unlock to signal that the codes were received correctly.
5. Remove the jumper wire or paper clip from the OBD2 connector. Great job, the programming is now complete!
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