Tesla has long equipped its vehicles with LTE (4G) modems, including the new Model Y, Cybertruck, and new Model 3. However, all three models now appear to be transitioning to a new, 5G-capable modem.
This marks a first for Tesla, and it’s likely that the upgraded modem will be integrated into newly manufactured vehicles as supplies become available. The modem, listed as “TELEMATICS CONTROL UNIT - TCU - GEN II,” was spotted in Tesla’s Electronic Parts Catalog (EPC) by well-known Tesla hacker Green on X.
Faster Speeds, Where Possible
5G coverage remains limited in many areas, with rural and suburban regions still relying on LTE—or even 3G in some cases. Since around 2018, every modern Tesla has been equipped with the Gen I modem, which supports LTE speeds ranging from 20 Mbps on the low end to 100 Mbps at peak performance.
The new Gen II modem, where supported, will enable 5G speeds of up to 1 Gbps (1000 Mbps). While this will be most effective in urban areas with dense 5G transmitter coverage, it will also benefit some well-developed suburban regions.
New Model Y
Interestingly, the new Model Y may come with either a Gen I or Gen II TCU, meaning buyers won’t know which modem they’re getting until they receive the vehicle. Green confirmed on X that both the LTE-equipped Gen I unit and the new 5G-capable unit are valid configurations for the new Model Y.
Retrofits
Not a Tesla App
While Tesla now offers direct-to-customer parts sales, the EPC does not list a price for either the LTE or 5G-capable TCUs. This is because these units require programming by Tesla Service or a trained technician and must be paired with a SIM card linked to the vehicle’s VIN.
Although the hardware swap itself is expected to be relatively straightforward, this isn’t something owners can retrofit on their own. However, Tesla may offer a retrofit service in the future. For now, with parts still in limited supply, pricing remains uncertain.
If 5G support becomes essential, you might be able to request a TCU retrofit through Tesla Service in the coming months as availability improves.
When Tesla vehicles were equipped with 3G-only modems, Tesla offered a paid retrofit to an LTE-capable modem, but this was mostly due to AT&T shutting off their 3G network, and these vehicles would lose their cellular connection otherwise.
Ultimately, this news of the 5G modem confirms that Tesla remains committed to cellular connectivity in its vehicles—at least for now. Direct-to-satellite Starlink support isn’t here yet, but we’re still hoping for it in the future. Until then, a Starlink Mini strapped to your Tesla’s glass roof remains a solid alternative.
Subscribe
Subscribe to our newsletter to stay up to date on the latest Tesla news, upcoming features and software updates.
Over the years, Tesla has introduced UI elements that indicate when specific hardware or software features are active—and these two new dots follow the same pattern.
In June 2024, Tesla introduced the ability to see which third-party apps have access to the vehicle’s location, and these new indicator dots have a similar goal — to improve transparency on features that impact privacy.
Green Dot
If you’ve noticed a green dot on your Tesla display or the instrument cluster for the Model S or Model X, then you have access to Tesla’s hands-free Autopilot feature.
The green dot is displayed on the screen whenever FSD or Autopilot is active and the vehicle is using the interior camera to monitor the driver’s attention.
The cabin camera does a much better job monitoring the driver than the old method of sensing torque on the steering wheel. The cabin camera detects driver attention by tracking the driver’s head and eyes and making sure they’re focusing on the road. If the driver looks away from the road for an extended period, the vehicle will warn the driver or issue a strike for repeat offenses.
If the cabin camera is occluded or obscured, or if it’s simply too dark, the vehicle will fall back to monitoring the driver by detecting torque on the steering wheel.
The presence of the green dot not only lets the driver know that the interior camera is being used but also lets them know whether they need to keep their hands on the steering wheel.
It’s important to note that images and video taken with the interior camera are processed in the vehicle and do not leave the vehicle unless you have granted access for Tesla to use them to improve functionality.
You can check your privacy and data sharing policy in Controls > Software and tap the Data Sharing button at the bottom.
Orange Dot
The orange dot functions similarly to the green one, but instead of indicating cabin camera usage, it appears when the vehicle’s microphone is active. This was added with software update 2025.2, which now listens for audio cues to detect emergency vehicles and other types of noises that could help the vehicle better understand its environment in the future.
Tesla is currently collecting this data to refine its ability to detect emergency vehicles even before they come into view. This capability is expected to be added in FSD v14 along with a larger model size.
Like cabin camera analytics, drivers can opt to share audio data with Tesla to improve detection accuracy. Many users received an “Allow Sound Detection Analytics” prompt following the recent update. If they consent, Tesla may use certain audio snippets to help improve their detection model. Any data transmitted to Tesla is not linked to a specific user or vehicle, so it can’t be tied to a specific individual.
Otherwise, all audio detection and processing is completed in the vehicle to ensure the driver’s privacy.
Tesla proves once again that it listens to its customers, and this is a perfect example. Since the Cybertruck’s launch with an adjustable air suspension, owners have been requesting suspension-related features.
One major request is the ability to remotely adjust the vehicle’s height. This could previously only be done from inside the cabin via the touchscreen, but Tesla has now added it to the latest version of the Tesla app. However, using the feature also requires vehicle software 2025.8 or higher.
This software update also brings improvements to the Cybertruck’s steer-by-wire system, which is set to come to future Tesla models. Unlike traditional rack-and-pinion steering, steer-by-wire is not directly connected to the wheels like other vehicles, and “road feel” does not carry through to the steering wheel. Instead, Tesla implements software-driven wheel feedback, which is being improved in this update.
Remote Height Adjust
Now, as of Tesla software update 2025.8 and Tesla App V4.42.5, Cybertruck owners can remotely adjust the height of their Cybertruck through the Tesla app. This setting is in the Controls section of the app.
Here, you can adjust to the four pre-set road heights, including High, Medium, Low, and Entry. For now, you cannot adjust to the two Off-Road Mode heights, which are Very High and Extract.
Now, if you don’t own a Cybertruck, you’re probably wondering why so many are asking for this feature. Well, if you want to go off-roading or even want to load something into the bed of your truck, it’s convenient to be able to remotely adjust the height of the car without having to go in it first.
You can also use it to show off the Cybertruck’s massive vertical range of motion - which can go nearly eight inches from Entry to Extract - all without having to hop into the Cybertruck.
Model S and Model X?
This feature could also potentially make its way to the Model S and Model X sometime in the future since both of these vehicles also have an adjustable air suspension. Today, the heights of these vehicles can only be adjusted inside the vehicle.
We’re sure some Model S and Model X owners would love to be able to adjust the suspension remotely, even if they may not have the same use cases — it’s still a nice to have feature.
Steer-by-Wire Improvements
Tesla has improved the Steer-by-Wire feedback and response on the Cybertruck’s yoke. This new update should provide more realistic wheel feedback. The feedback will now adapt to different road surfaces for a better driving experience.
That means the response and feedback of the wheel will now be more precise - and also be varied by what kind of terrain you’re driving on.
More Features
One more thing we’d love to see from Tesla regarding the Cybertruck is the ability to drop just one side of the suspension. This is possible in Service Mode, where you can deflate either the front or rear air tanks, thereby inducing a slant to the vehicle.
This makes loading items even easier, as the bottom of the tailgate is now even closer to the ground. Tesla showed off the feature during the Cybertruck’s initial reveal. While the Cybertruck never arrived with its built-in ramp, we’d still love the ability to dip the truck for easier loading.
Another feature that was supposed to arrive for the Cybertruck was related to Steer-by-Wire. Today, the Cybertruck can steer up to 7 degrees, but the actual hard limit for the rear wheels is somewhere between 10 and 14 degrees. We’d love to see Tesla expand the rear wheel steering limits which will help reduce the Cybertruck’s already tight turning circle.
Four-Wheel Steering gives Cybertruck a tighter turning radius than a Model S
At low speeds, rear wheels rotate opposite to the front wheels—enabling tighter maneuvering around the jobsite, parking lots, etc pic.twitter.com/nxDiRTZKEI
_300w.png)
