I too was recently told about an issue that might require an upgrade with this same bulletin information. The first dealer I called was completely abrasive and insisted on charging me a fee for looking at my car in order to determine if it needs any work. I clearly stated that I was told this is what I was told needed to be applied. They said fine the actual upgrade is free but you will be charged a diagnostics fee whether work is completed or not. So I re-read my email from Nissan (see below) and it states if you get push back tell Nissan Owner Services support. So I called back into Nissan and they said they can't get in the middle of if the service department requires a diagnostic fee for all cars but the upgrade should be free. Seems like a bit of slight of hand on the dealer that allows Nissan to look the other way.
So I reach out to a different dealer and before I even finished explaining my issue the service guy said he owns a leaf and he guessed what bulletin I was calling about and said it's no problem and it's free. I said do you require a diagnostic fee, he cut me off before I finished saying it and said nope. Free is free, I know what problem you are talking about, I've had the same issue. Bring it in and we'll get you fixed up.
Thank you for contacting Nissan LEAF Customer Support. We appreciate hearing from you.
Your vehicle needs the countermeasure upgrade. You will need to contact your local Nissan Dealer that is equipped to work on Leaf vehicles. The bulletin number you will need to provide is: NTB18-045b. If you have any questions, or receive any pushback from the dealer, please contact us.
Please feel free to contact us again with any additional questions, through our website at www.nissanusa.com
or by phone at +1 (877) 664-2738. We are here to serve you from 8:00 a.m. to 12:00 a.m. (EST) Monday through Saturday.
Nissan LEAF Owner Services
Nissan North America, Inc.
One Nissan Way
Franklin, TN 37067
Phone: +1 877 664-2738