Originally Posted by thrawn86
A good example is the recent shifter recall. If they plug into your car and you don't have the updated software, they will want to upgrade immediately since this is a safety related issue, not a regular TSB.
Your assessment is correct, though it should be clarified regarding terminology. A recall is a recall... meaning there is a campaign, the government is typically involved, mailings go out, etc. A TSB is a technical service bulletin. These get patched/fixed only if an owner complains about the issue the TSB describes. We're on the same page so far.
There's one more wrinkle: the RRT. Certain TSBs are promoted to RRT status. You can think of RRTs as "unofficial, not safety-related, recalls". You can see if your TSB is an RRT if there is an entry in the RRT field next to it on the WK2jeeps page. One example of an RRT was when they changed the oil spec for the 2016's and dumped/replaced the oil in all the unsold Jeeps.
RRTs are still TSBs... they're just special. They have both a TSB number and an RRT number.
I don't believe they will go flashing your ecu willy-nilly unless a) its a safety related TSB or b)you are having an issue that corresponds to an existing TSB.
They will automatically flash any recalls *as well as* any RRTs. "So what?" one might say. Well, it becomes salient if, for example, once upon a time there was a critical bug in the PCM firmware for your model year. That implied the next PCM firmware release that fixed this critical bug would be an RRT instead of a plain old TSB. Seems reasonable, right?
Okay, but now remember that these firmware releases are *not* modular. Therefore, if *any* firmware release was an RRT then *all subsequent* firmware releases for that module will inherit RRT status, even if all the subsequent releases do is something trivial and would otherwise be one of those optional TSBs.
This is exactly what happened with the 2014's and 2015's. For the 2014's, about 10 months after they were released a PCM RRT came out. Every PCM update after that (even the trivial ones) was therefore an RRT. I think the average has been ~2 PCM firmware updates per year for the 2014's (most recent one for the 2014's was released in Feb 2016)... all have been RRTs, after that first critical one.
You will need to be careful if you don't want your firmware overwritten. Either check to see if there are any RRTs or recalls for your PCM before you go into the dealer, and/or be very explicit with them regarding what you want updated or not (and then hope they comply).