Spring suspensions use semi-elliptic leaf springs to cushion a load
from road shock. As one of the most commonly used suspensions,
spring ride consists of several layers of flexible steel strips
referred to as a “leaf pack.”
The strips are joined together to act as a single unit. The long
and narrow arch-shaped plates are attached to the frame of a
trailer, resting above the trailer’s axle.
This is the Front LH or RH HONGGU Air Strut Assembly for the Tesla
Model X AWD 2016-2019
Fully functional, tested and working, ready to go into your Tesla!
Replace that damaged or broken strut
An air suspension system can adjust your car’s height in seconds.
This lets you achieve a smoother ride, ideal ground clearance, and
even out any heavy payload.
Most off-road vehicles use air suspensions. This is because, aside
from improving ground clearance, air suspensions can also improve
approach, breakover, and departure angle. Efficient height
adjustments also help prevent damages caused by trail hazards.
However, cars with air suspensions also come with disadvantages.
Since air suspension systems are more complex than traditional
systems, they are more expensive. They are also more prone to
failure because they involve a lot of technology. Fortunately,
regular maintenance can prevent most of the issues that may affect
air suspension systems.
In today’s installment of our Tesla Features Explained blog series, we’re going to explore a different kind of
behind-the-wheel experience in a Tesla (technically, it’s an
under-the-car experience, too). Welcome to the realm of Tesla’s
Smart Air Suspension (SAS), where ups and downs are a
software-controlled part of life!
For those who don’t know, vehicle air suspension is a method of
shock absorption by means of rubber bellows (or airbags) filled
with compressed air to create a cushioning effect. Air is
distributed through hoses to the bellows on each strut to adjust
pressure, allowing the vehicle to raise and lower either through
manual controls or automatically (as is often the case for
self-levelling in trucks that have suddenly received a payload).
Tesla’s Smart Air Suspension features sensor-calibrated air
suspension tech coupled with programming that can adjust the
suspension’s height based on GPS location, speed, and driving
While Smart Air Suspension is no longer an option on newer Tesla
vehicles (we’ll briefly discuss the replacement tech a bit later in
this post), this feature is prominent in the earlier Model S and
Model X. Buyers in the market for a used Tesla need to be on the
lookout for potential issues with the suspension system on each
vehicle that they are considering. It also doesn’t hurt to look
into the pros and cons that exist between the Smart Air Suspension
option and standard coil spring suspension.
Let’s take a quick look at how Smart Air Suspension works, which
Tesla models and years used the Smart Air Suspension technology,
how the tech has changed, and what to look out for when buying a
used Tesla with Smart Air Suspension.
Tesla Smart Air Suspension 101 – Pros, Cons & More
So what makes Tesla’s air suspension smart? Well, Tesla made good
use of their “car as an app” strategy to create a suspension system
that adapts to the vehicle’s physical location (GPS geofencing) and
its speed via software. Along with the ability to manually adjust
the height of the car through the vehicle’s control panel, drivers
can expect the car to save the GPS location of the vehicle for each
adjustment. Tesla’s Smart Air Suspension software then
automatically adjusts the height of the car when it encounters a
saved data point, such as a steep driveway, a carwash, or bumpy
dirt road. Note: these data points can also be manually removed
from the control panel. If you happened to show off the different
Smart Air Suspension settings to someone in a friend’s driveway,
you can delete that data afterwards so that you don’t have to drop
to Low every time you drive up to visit.
In addition to data point adjustments, automatic adjustments to
height occur for different speeds in order to reduce drag and
provide more ride stability. The speed thresholds for these
adjustments have changed over the years thanks to over-the-air
updates; currently, Tesla’s Smart Air Suspension will reduce height
from Very High to High at 22 mph, and from High to Standard at 35
The Model S was the first to receive Smart Air Suspension as an
add-on option in 2014, and that system became standard for all
Model S trims from 2017 to mid-2019. Height settings for the Model
S are Low , Standard, High, and Very High, with a clearance range
from about 5-7 inches. The actual adjustment heights provided by
the Smart Air Suspension system vary by model (and, we assume, by
the type of tires currently installed), and the Model X’s numbers
are slightly different. In addition to the Low, Standard, High, and
Very High, the Model X also has a setting for Very Low, and the
clearance range is about 5-9 inches. There’s also a Jack Mode on
the Model X for repairs, but you can’t use it for driving.
It’s interesting to note that while a coil spring suspension was
originally offered on the Model X in the configurator, Smart Air
Suspension was made standard before any Model X came off the
assembly line in 2016 and no coil spring suspension was actually
produced on the Model X. On the other hand, many of the earlier
Model S trims were made with a coil spring suspension (all of them,
in fact, up until 2014), so there’s still the option to find one
without an air suspension. One of the reasons that a pre-2017 used
Model S with a coil spring suspension might be worth digging for is
that coil springs are fairly inexpensive to replace if there’s a
suspension issue. Air suspension, on the other hand, can be an
expensive repair project and may not be worth dealing with even on
a bargain used Model S.
Fun fact for those wondering what kind of damage the bottom of a
Model S could take if the suspension is adjusted too low for the
driving conditions: after getting feedback on concerns about
battery safety, Tesla added a titanium shielding panel (plus a few
other structural elements) to the underside of the Model S that was
capable of shattering a concrete block at driving speed. It just
goes to show that damage received when scraping the bottom of a
Model S isn’t even in the same ballpark as damage received by
something like a Prius under the same conditions. Ouch.
Does the Model 3 or the Model Y Have Smart Air Suspension?
The short answer is no, neither the Model 3 nor the Model Y has
been manufactured with Smart Air Suspension. Read on for the long
While Tesla tested the Smart Air Suspension system out on some
development versions of the Model 3, no Model 3 has come off the
manufacturing line with Smart Air Suspension installed. As far as
we know, there are no plans to add this feature to the Model 3 at
this time. The likely reason for this is that the Smart Air
Suspension option would add to the production time and cost of the
Model 3, something that Tesla has been trying to avoid while moving
the Model 3 as close to mass market manufacturing and pricing as
they can. The situation is similar for the Model Y, and though
plenty of rumors and hints that there will be some kind of
adjustable suspension for both of these vehicles in the future,
nothing has solidly surfaced. Tesla has not released any further
info that suggests that a future upgrade is in the works.
What Feature Replaced the Tesla Smart Air Suspension?
When Tesla completed development of their new ‘Raven’ drivetrain,
they upgraded the air suspension to what they called Adaptive
Suspension, which is now standard on the Model S and Model X as of
2019. We’ll be adding a more in-depth look at Adaptive Suspension
in an upcoming blog post; for now, it’s enough to add that the
upgrade mainly improved ride comfort, adjustability, and visual
Does the Model S Smart Air Suspension Have Reliability Problems?
While the Smart Air Suspension system is a really cool feature
involving the kind of Tesla tech that makes driving a Tesla both
more fun and more comfortable, the possible financial drawbacks on
an older pre-owned Tesla can be pretty steep. Not every Tesla with
Smart Air Suspension has had major problems with it, but air leaks
are a common theme for service center visits. At the extreme end of
the spectrum, damage to the vehicle when a leak is bad enough for a
bellows to completely deflate can be very costly to repair. On the
plus side, an air suspension typically doesn’t hide the fact that
it’s having issues. When something is off in the air lines, you can
usually hear it or notice the effects pretty quickly. With a coil
spring setup, though, the springs can deteriorate silently until
they epicly fail, which can cost a lot more to repair than just the
If you are looking at a used Tesla with Smart Air Suspension, it’s
always worthwhile to take a listen for odd hissing sounds and loud,
grinding noises from the compressor. You should also check for
uneven distances between wheels and wheel wells and note the time
that it takes for the vehicle to rise and lower. These things can
indicate a problem with the suspension and help you make an
informed decision on whether or not the deal you are being offered
is worth the potential repair costs.
Want to get a good feel for the price ranges and options on a
pre-owned Tesla Model S or Model X with Tesla’s Smart Air
Suspension? Try a search through our owner listings! Unlike other
sites that make it impossible to differentiate between suspension
types (or Autopilot hardware, wheel size, Ludicrous mode, and
more), Find My Electric’s filters make it easy to select only the
options you want and to sort them based on your priorities. Cool
features like Smart Air Suspension are what make owning a Tesla
worthwhile, so we made sure to do the digging for you to keep your
search results user-friendly and feature-informed. Check out our used Tesla listings today to see what’s available!
Air struts will typically be found on the front suspension of
everything from Jaguar to Ford. Air struts look like a traditional
coil-over strut but instead of a coil spring, an air spring sits at
the top of the assembly. Air struts can support all the normal
weight that a coil-over strut could so they will not be found
paired with any other springs. Air struts will offer load leveling
and height adjustment, so they are a popular option on sport or
off-road models with adjustable suspension.
In my country, many luxury models or SUV use air suspension and air
spring, the most advantages, the improvement of ride quality, and
the comfort is greatly strengthened. However, hundred percent of
the developed countries has adopted air suspension systems, and
more than 40% of truck trailers and trailers have adopted air
suspension. The biggest advantage is that not only can the
occupant's ride comfort, but also The road plays a protective role.
Air suspension, generally hard and hard, its working principle is
that the sensor will transmit the collected signal to the control
unit, the control unit is calculated, then transmitting the
instruction, adjusts the air spring hardness and damper damping,
and reaches The most ideal elastic state. There are many air
suspensions, but also integrate traditional chassis lifting
techniques, while driving at high speed, the body height will
automatically reduce to achieve the purpose of reducing wind
resistance and reducing fuel consumption, and enhances the
stability of the vehicle in travel.
Now the luxury car is gradually adopted for air suspension. Only
one reason is to improve the comfort of passengers, and the air is
hung as a high-quality point to reflect the high quality of the
car, more convincing sales products.
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