Note: I have NOT personally tested this method. This is the result of info I gleaned from a number of sources. I can't even confirm definitively that it will work with a Leaf though it does work with other Nissans and it is unlikely that they changed the method for just the Leaf.... Proceed at your own risk and with due caution!
Here is a way you can do it yourself to reset the tpms and register the pressure sensor IDs without any special tools (with the help of OBD3 Solutions and their BLOG - http://blog.obd3solutions.com/en/?p=20" onclick="window.open(this.href);return false
.
OBD3 found a way to reset and put the tpms into learning mode with a piece of wire and then register the tpms wheel sensor IDs.
The service manual describes a method of registering the wheel sensor IDs without the use of an activation tool. All you have to do is alter the pressure in each tire, put the tpms into learning mode and drive the vehicle until all of the wheel pressure sensors are registered.
Putting the TPMS in to learning mode requires making a connection to ground of the TPMS/DLC pins 5 times within 10 seconds. This involves either a paperclip, wire, or a simple switch tool such as this one: http://www.ntxtools.com/network-tool-warehouse/OTC-3831-p-11105.html" onclick="window.open(this.href);return false;. Here is how you do that:
1. Locate the TPMS interface plug. This is a white female plug that is attached to the OBD II wire loom under the dash right about where your right knee would be when sitting in the driver's seat. You may have to cut the tape that is holding the TPMS interface plug to the OBD II wire loom.
2. Attach the Nissan or other switch tool TPMS Reset Device (http://www.ntxtools.com/network-tool-warehouse/OTC-3831-p-11105.html" onclick="window.open(this.href);return false
or stick a paper clip into the interface plug. If you use the paper clip be sure it is small enough to fit in and don't jam it in there hard.
3. Turn the car on.
4. If you used the a switch tool reset device, connect the alligator clip end to any exposed ground (metal). Squeeze the trigger on the device 5 times within 10 seconds.
5. If you used a paper clip then tap the end of the paper clip (the end NOT in the interface plug, duh!) on any exposed ground (metal) 5 times. The bracket that holds the OBD II socket is in just the right position.
6. If you completed step 4/5 then the TPMS warning light on the instrument cluster will start to slowly flash and you have activated the TPMS relearn process. If it flashes fast that's not right and you need to repeat the process from step 3.
Here is the step by step process:
1) set different tire pressures in each wheel: RF to 34psi, LF to 31psi, LR to 28 psi and RR to 26psi;
2) turn car on;
3) perform the OBD3 procedure to reset and put the tpms into learning mode - tpms warning light should be blinking slowly;
4) drive vehicle around at speeds greater than 30 mph until the tpms warning light stops blinking and turns off. Note a short time later, the tpms warning light should go on and stay on (since one or more of your wheels will be lower that 28psi);
5) disconnect the wire from the connector; and
6) re-inflate the tire pressure to spec. and drive around until the tpms warning light turns off.