How to find out if you need firmware updates?
I recently had my car in for the differential noise issue. I also complained about the shifting behavior caused by my previous transmission flash and requested any updates that might help.
Back in mid February they told me I didn't need any. Come first week of August, it's a whopping 7.
I suspect at this point, it is questionable if inquiring about software updates will get you any useful information if they don't have the car hooked up to their diagnostic system. One big difference between then and now was that my dealer switched over to keeping a bunch of ODB port dongles in a basket on the service desk, and the rep would hook up every car they processed. It also apparently autofills a bunch of stuff for them in their book keeping as well.
Anyway, I got:
TSB 21-054-15, which apparently pre-dated my last visit by a month or so and I never got (never had any of the symptoms either, things shifted out of park just fine). It's for the ESM electric shift module
18-063-16 for the PCM (powertrain control module)which is a super secret mystery update with no info.
21-021-16 for the TCM, which is another mystery update.
08-014-16 REV A. is yet another mystery update with no info. for the IPC (instrument panel cluster).
08-127-15 another mystery update for the radio freqeuncy hub aka RFH.
05-001-16 REV A for ABS,
08-084-15 for EPS for the electric power steering for an indicator lamp issue I wasn't having.
I will say that the after the latest mystery updates, the shifting is back to being a WHOLE lot better, and I don't appear to have given up any of the fuel economy improvements that had come with the last TCM update. Also, the annoying grumble like the engine was starting to lug around 1500rpm is GONE. The engine only gets buzzy at one specific RPM range now instead of several, which is pretty normal for a NA inline four.
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