I received software update 2022.20.5 the other day. Since it included a new feature enhancing the Adaptive Ride Control, I had hoped that Tesla would use it as “cover“ for fixing the bug. It would make it easier for them to explain the sudden improvement in everybody’s ride without admitting that there had been a bug. Of course, I was disappointed.… no change in ride quality. Renders the new feature completely useless doesn’t it? I still believe, however, that the “forces“ at work here (potential litigation, warranty satisfaction, competition) will nudge Tesla to ultimately fix the problem. The costs of doing nothing are potentially large, versus the small cost of fixing the bug. In the meantime I think I may have stumbled upon a quick, easy method of determining if a particular car has a working Adjustable Ride Control or not. When I did the measurements of the pulse width modulated signal sent to the shock solenoids (see my video, referenced above) I noticed that what was labeled “percentage damping“ under suspension info EXACTLY matched the “duty cycle“ of the PWM signal that I measured…. For ALL SEVEN of the ride comfort settings! (Duty Cycle being the pulse width expressed as a percentage of maximum). In other words, I measured a pulse width of 20% of maximum, and the display read “damping percentage 20%. Of course, “damping percentage” and PWM Duty Cycle are completely different animals… 0% damping equals 100% duty cycle, and conversely. Nevertheless, an exact match for Comfort, Sport, and all 5 of the Ride Comfort settings is too much to ignore. It appears that the measurements that I had to obtain using an oscilloscope are displayed directly on the “suspension info“ screen! To test this theory, I need to know what YOUR displays read. If we can prove that cars with working suspensions show DIFFERENT percentages than cars with non-working suspensions, we might be able to take THAT to Service and get some satisfaction. Here’s what to do:
get in your car, go to this screen:
View attachment 829539tap the brake to activate the suspension, then select “Comfort “ and read the Front Left Compression Damping number… write it down. Now read the same number after selecting “Sport “, then tap “Advanced “ and select “Ride Comfort “ and record the numbers for the 5 settings “Soft“ thru “Firm”. Here’s what mine reads: Comfort: 0. Sport: 28. “Ride Comfort, Soft thru Firm: 0. 4. 4. 8. 20.
PLEASE reply to this post with your results. Give your cars’ year and model AND your delivery date! If your results are the same as mine, just say so, but if they’re different, I’m really interested to know what they are. I’m hoping to get some replies from those of you with working suspensions. The readings will only take a minute to get! PLEASE HELP! Thanks!
