Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[waynebhayes]

Folks,

Perhaps "lousy" is a bit too strong... but ever since I upgraded to the newer OS on my Zero SR/S, two very annoying changes occured.

1) While the speedometer used to show a stable, smoothly changing value, now the number flickers up-and-down a few mph several times per SECOND... yes, that's right, the number on the speedometer fluctuates 1-2 mph up and down with a frequency of about 3-5 Hz, all the time, without fail, even when travelling at a perfectly steady constant speed. This makes it hard to determine what my ACTUAL speed is.

2) And speaking of a constant speed... cruise control used to work perfectly. Now... at various speeds (seems to be in the 30-50mph range, or at an energy usage of 60-100 wpm), the cruise control can't maintain a steady *actual* speed even if I can do so readily using the throttle manually. If I engage the cruise control at those speeds, it starts to lurch forward and backward, speeding up and slowing down at a frequency only slightly slower than the above: maybe 1-2Hz. It's not dangerous, but it's uncomfortable and disconcerting enough that I simply have to turn it off unless I'm over about 100wpm or below about 50wpm.  Obviously it's applying too much torque in an attempt to hit the desired speed, overshooting and then "porpoising" up and down around the desired speed. The problem occurs even if I'm in "Eco" or "Rain" mode, where it's *supposed* to have minimal torque. I've even created a custom "WIMP" mode where everything is set to 0%, and the problem occurs even there.

Has anybody else noticed either of these problems? Again it's only started happening about 6 months ago when I upgraded the OS at the dealership; I've waited this long to report it since I figured it was so obvious and annoying that one of the Firmware updates would fix these two issues, but they've been constant through half a dozen firmware updates.

Thanks.

Wayne B Hayes
2020 Zero SR/S Premium, currently with 5500 miles.

[karlh]

Wayne,

To which "new OS" are you referring?

[Zelidar]

I now have the main bike board at revision 27 (MBB) and the battery management system at revision 21 (BMS). When your bike is connected to the Next Gen App, you can read both these values under "Performance" / "MANAGE FIRMWARE".

1) While the speedometer used to show a stable, smoothly changing value, now the number flickers up-and-down a few mph several times per SECOND...

I remember having noticed that "new" effect, but then it went away, cannot remember when. For me this was even before MBB 26, probably in the spring. It could also be related with the dashboard firmware.

2) And speaking of a constant speed... cruise control used to work perfectly. ...

It always worked "okay" for me, I didn't notice any relation with firmware versions. Driving flat or on down a slope, the speed is maintained. Driving uphills on the other hand, my speed would slightly drop in proportion of the grade, typically between 5-10 %. Annoying, especially when I am the head vehicle.

[waynebhayes]

Wayne,

To which "new OS" are you referring?

New version of the Cypher OS---this is completely independent of the firmware versions, I believe, and it can only be done at the dealer. When my dealer offered it, I just said "yeah, sure". He said it would support some newer features that are on the horizon... the whole layout of the dashboard changed (which I don't mind), but that's exactly when the jerky speedometer + jerky cruise control problems started.

[enaef]

[quote Driving flat or on down a slope, the speed is maintained. Driving uphills on the other hand, my speed would slightly drop in proportion of the grade, typically between 5-10 %. Annoying, especially when I am the head vehicle.
[/quote]

Exactly my experinece. I wonder, why it's not possible to get a steady speed uphil. It's annoying.