Random auto-leveling while driving?

[Idrenak]

What you’re describing is not unique to the cyber truck. I have a ram 1500 with air suspension that does the same thing and has since new. Nothing to worry about.

 

[mstatkus]

Did it to me on 20.9 yesterday. Was on a slight hill and the rear raised to level off.

 

[Sirkevin]

I notice the same thing, thought someone may have bumped into me. Glad to know it's a software issue that will most likely get fixed.

 

[rudedawg78]

Can it just be the adaptive air suspension doing its thing?

 

[Jhodgesatmb]

Like @HaulingAss mentioned, I have my height setting at ‘high’ and the car automatically resets the height to ‘low’ when I change from non highways to highways (and back). So there might be other times it automatically changes height. Why people automatically assume this kind of behavior is an issue, without thinking it out, is beyond me.

 

[HaulingAss]

I notice the same thing, thought someone may have bumped into me. Glad to know it's a software issue that will most likely get fixed.

Where did you get that idea?

What I'm hearing is that it's normal, not an issue, no software fix needed.

 

[Chris9702L]

I think what you're describing is the way Tesla to designed the system to avoid waste of compressed air. The tank is pressurized far beyond what the air suspension needs. When it finishes it's run cycle there is high pressure air in the lines. Typically this would be bled to the atmosphere with a short, loud hiss/blast.

What Tesla does is underfills the suspension a bit knowing that when the compressor shuts off there will be a certain volume of air in the lines, at a certain pressure, that it can direct to the underfilled suspension units to bring them the last bit of the way up to the desired setting. Because the valve that diverts line pressure to the suspenders is not soft open, it makes a small bouncing motion of the suspension when the valve clears the lines.

If you have your preferred ride height set to "higher" the suspension will raise and lower depending upon vehicle speed. To avoid this, set the preferred ride height to "Lower".

I always have my suspension on lower and it does the same thing. I’ve had the truck for 3 months and consider it normal.

 

[HaulingAss]

I always have my suspension on lower and it does the same thing. I’ve had the truck for 3 months and consider it normal.

I've never noticed that behavior when I had my Cybertruck set to "Lower" for the ride height preference. Although it could happen if you've ever adjusted the ride height near that spot previously because it remembers it and replicates that ride height until you clear the locations. I imagine it could also happen if you use the "Entry" ride height feature. Anything that causes the suspension to adjust ride-height will occasionally result in the little "bump" when the compressor shuts off.

 

[Derektsla]

Yes definitely. I feel like it happens when I sit at the first stoplight after being parked for a while . I hear a thunk, the truck abruptly drops an inch. The drop is so sudden it almost feels like someone bumped into you.

this is likely because you air suspension was in entry mode when you got in. Then it moves up to medium, and the compressor then starts up to refill the tank. Then it releases some pressure at the end. This is a good explanation…

I think what you're describing is the way Tesla to designed the system to avoid waste of compressed air. The tank is pressurized far beyond what the air suspension needs. When it finishes it's run cycle there is high pressure air in the lines. Typically this would be bled to the atmosphere with a short, loud hiss/blast.

What Tesla does is underfills the suspension a bit knowing that when the compressor shuts off there will be a certain volume of air in the lines, at a certain pressure, that it can direct to the underfilled suspension units to bring them the last bit of the way up to the desired setting. Because the valve that diverts line pressure to the suspenders is not soft open, it makes a small bouncing motion of the suspension when the valve clears the lines.

If you have your preferred ride height set to "higher" the suspension will raise and lower depending upon vehicle speed. To avoid this, set the preferred ride height to "Lower".

 

[GonePlaid]

I’ve also noticed this and have had air suspension in around 5 other vehicles and never noticed anything quite like this. Sure they all level constantly, which the cybertruck does too, but this is a bit more violent then even when the CT does its thing to change levels. I’m still going with not normal but not exactly a problem other than I constantly feel like someone’s bumping me (like many other have mentioned here).

I haven’t tested this but it could be when it moves back to medium after a higher speed lowering event and coming to a complete stop. Maybe it over fills and then drops slightly when done.

 

[jf64k]

Mine (AWD 113xx) does this, too.

I’m set to medium with auto lower enabled.

 

[Netwizzerd]

I've only had my AWD CT for 9 days now and have noticed it twice, both while sitting idle (but in Drive). The first time I was in a drive-thru and at first thought the car behind me hit me, as there is definitely a noticeable bounce/bump that occurs.

I’ve had other cars/trucks with air suspension (including Teslas) and none have done this. It’s quite a loud and sudden, short “bop” sound versus typical air suspension adjustments/leveling which are usually longer in duration and “pshhhhhhhh” sounds. The CT issue shakes/bounces the entire truck.

I’m not going to subscribe to the “it’s just normal air suspension behavior” explanation. I too am hopeful that this is recognized by the Tesla CT team and addressed in an OTA update down the road.