US Nissan Leaf owners can now take their Leaf in to their dealer to receive a second update as part of a ‘voluntary service campaign’.

The service update is supposed to boost the accuracy of the Nissan Leaf’s on board range estimate display, which driver’s have been complaining about for a while. On the Nissan Leaf forum, members have actually created their own digital display to give a more accurate view of the batteries state of charge to help take some of the guessing out of the all electric drive experience (see here).

The Nissan Leaf update will also improve Carwings connectivity in an effort to make the smartphone app more accurate and give a better estimate to owners as to when the charging will be done.

An additional driver convenience alert will also be added that will alert the driver when a door is open and the Nissan Leaf is not in Park.

Nissan North America’s technology and motorsports communications manager Steve Yaeger says the service is not mandatory, but will be performed for free for all Leaf Owners.