Tailgate Foot Activation (Variant B MARK 2)
This is the installation guide for Tesla Model 3 Tailgate Foot Activation (Variant B Mark 2) from EVOffer.
Packing List
Foot Sensor x 1
Signal Harness for Hatch Area x 1
Foot Sensor Harness x 1
Decoder Harness x 1
Long wire harness x 1
Small controller x 1
Decoder x 1
Recommended Tools
Fishing Tape
Electrical Tape
Pry Tool
Installation
Step 1 - Removing the trunk panel
Open the trunk. Release the clips at the upper corners, then work around the trim to release the clips that attach the trunk trim to the trunk lid.
Support the trim while releasing the clips, as the power trunk switch harness is still connected to the trim.
Disconnect the connection from the closing button
Step 2 - Connect the signals in the hatch
Take out the signal harness.
Connect the external release signal connector. The connector is located in the middle, unplug it and plug the connector to our bypass connector. Plug the other end of our connector pair back to the car.
On the same harness, there is a 5 pin connector, connect it to the small module given. Stick it to the inner wall inside the hatch.
The remaining bypass pair is for the trunk closing button. We will do it when we reassemble the hatch panel. Note: this connector pair need to be connected in order for the foot sensor to function.
Step 2 - Run the wire to the trunk
Now run the remaining long wire down to the trunk. In order to do that you will need to run the wire down through the grommet. If it's too difficult to do so, you can run it along with the grommet.
Continue to run the wire until you reach the trunk sill. Connect the two pin connector to the foot sensor harness.
Step 4 - Run the wire to the front
Get out the long 2 pin wire. This is an extension wire that you will need to run from the back to the front. Run it along the floor and tug it inside the trim until you reach the front right side of the car.
Step 5 - Connect the decoder harness
On the right side of the car (the picture below shows left side of the car, but do the right side instead), release the upper clip that attaches the middle A-Pillar trim to the vehicle, and then pull the trim upwards to remove it from the vehicle.
Release the topmost clip on the lower A-pillar trim.
Pull the rearmost part of the lower A-pillar trim upward to release the clips and tabs, and then pull the entire trim rearward to remove the trim from the vehicle.
On the decoder harness, you will need to connect the power source and the CANBUS. For the power route the red wire to the frunk through the firewall. Connect the power to the 12v battery (For 2022+ car, strip the end of our red wire and wrap the wire aroudn the jump post).
On the decoder harness, you can see a big white connector. Connect it to the blue idle connector behind the kick panel near the door on the right side of the car.
Connect the decoder. Make sure you set the 1 and 2 of the switches on the decoder to "on".
Connect the long harness to the decoder harness by the 2 pin connector.
In the back of the car, connect the 2 pin connector of the same wire to the foot sensor harness wire.
Step 6 - Run the foot sensor wire down and connect the foot sensor
For foot sensor mounting, refer to this guide below.
Step 7 - Test the foot sensor
Now you can test the foot sensor. Try to test if the foot sensor get deactivated when the car is in car wash mode, when the emergency flash light is on, and when the car is not in Park mode. Reassemble everything after testing.
You might find that the foot sensor trigger the trunk open but it close right after raising a little. This is because the foot sensor logic need time to reset after closing. After the trunk close, there is a 10 second reset time before a kick sensor opening can work again. Try to wait for 10 seconds and do the opening, it will function again.
Troubleshooting
Q: The foot sensor does not work.
There are several things that you can check. First is to make sure the bypass connector on the trunk closing button is connected. Also make sure you connect both end of the long harness.
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