Sorry to revive an old thread, but I'm having the same issue on a 2022 RT and curious if you ever found something.
On mine, the start will be a little rough and the VSS fault goes away as soon as I release the parking brake. Battery shouldn't be an issue because it's new, and today it happened after I stopped for gas, so it should have been fully recharged.
A new battery is no guarantee that the battery is good, you should still get it load tested, or at least check its voltage under starting load as you actually crank the battery! There are quite a few reports here on the Forum of
BRAND NEW batteries either not being properly charged to start with, or failing on or soon after their first use! When you get a new battery, it
SHOULD have been charged with a good charger for at least 8 hours before installation & connection - but if that didn't occur, your battery may not be up to snuff &/or it might fail rapidly.... so was your new battery fully charged immediately before installation?? And if it's just a new Spyder & OE Battery, how long did it sit around for quietly discharging before you bought it/anyone ran it?!? :dontknow:
You say this VSS fault also happened after you stopped for gas... but how long had you been riding before that??
Cos if it was run for anything
less than about 30 minutes at highway speeds, there's a good chance that the charge system hadn't yet had time to
fully replenish the charge depletion that occurred when you last started the Spyder - so depending upon how long & the revs you'd been running at, your new battery may well have been
even more depleted than usual, and at least contributed to this problem! :banghead:
So,
Step 1: CHECK THE BATTERY!
Ideally, get it properly load tested; but if you're doing it yourself with a multi-meter, check the voltage
before you do anything with the Spyder after it's been standing for 8+ hours; then check it again once you turn the ignition on; then while it's actually cranking the battery; again at idle after the engine starts; and then finally once the engine's running at 2500 revs or more. If the voltage is or it drops below at least 12 volts at any of these stages, there's a good chance your battery is not up to the loads being placed on it by your power hungry Spyder, even if the battery
is brand new! :sour:
Step 2: Check the Battery Terminals & every Earth connection you can find to make sure they're all clean & tight - and if you haven't got star washers on them, it's a good idea add them now! Poor battery &/or earth connections could cause enough voltage loss to result in this sort of failure/error until the system reaches charging voltage, or maybe it's a dirty switch &/or connection on the Foot Brake/Park Brake?? So check those connections/switches too! :lecturef_smilie:
Step 3: Check all the wheel speed sensors & wiring to make sure they are clean & undamaged.
A damaged or dirty wheel sensor, or even just a crimped or damaged/broken sensor wire could mean it's not sending the correct signal to the computers, and you're ending up with a VSS failure showing as a result - altho unless the battery is also a little weak, only a 'mildly dirty' sensor is likely to degrade the sensor signal juuust enough to cause an issue, yet still be up to giving you a good enough reading once the system voltage reaches charging levels! :dontknow:
From there on in, if you haven't resolved it already, then you are probably just going to hafta revert to standard troubleshooting mode in order to track down the cause of your issue; but my point here is that
you really shouldn't ignore the battery as a potential cause just cos it's new - the number of people who've done this only to discover later that it was the 'new' battery all along would probably astound you - it's gotta be almost as many as those who've searched & chased everywhere trying to identify/remedy the cause of their steering concerns &/or vibration issues, looking everywhere
BUT the OE Spec tires, only to eventually find that swapping out the Kendas for something else (what brand?? Well, pretty much
ANYTHING else!) instantly resolved all those issues they'd been chasing thru every other possibility! :gaah:
Good Luck! :cheers:
