Tesla's Sentry Mode captures videos from up to four cameras at once
Not a Tesla App
Tesla Sentry Mode is an intelligent vehicle security system designed to monitor and record potential threats around your parked Tesla. This feature utilizes the vehicle's cameras and sensors to detect suspicious activity, notify the owner through the Tesla mobile app, and save footage to a USB drive.
What is Sentry Mode
When enabled, Tesla Sentry Mode keeps the vehicle's cameras and computer powered on and ready to record potential threats while the car is locked and in Park. If a threat is detected, the system pulses the headlights, displays a message on the touchscreen, and may sound the alarm, depending on the situation. In addition, footage of the event is saved to a USB drive, and the owner will be notified via the app if the alarm goes off. Sentry Mode offers an extra layer of security for Tesla owners, helping to deter would-be thieves or vandals.
Cameras and Sound
While Sentry Mode is enabled, it will record from four of the vehicle's nine available cameras. The video recorded comes from one of the front-facing cameras, the fender camera on either side of the vehicle, and the rear camera. The other remaining front-facing cameras, B-pillar cameras, and the cabin camera do not record at this time.
Teslas do not contain any external microphones, so all Sentry Mode videos are silent. Although Teslas do contain internal microphones, Tesla does not capture audio from these microphones. In fact, even if you're viewing the interior camera in the Tesla app, you can not hear any audio from inside of the vehicle.
How to Turn On Sentry Mode
You can enable Sentry Mode by tapping Controls then tapping 'Sentry.' The Sentry Mode icon will turn red when Sentry Mode is enabled. You can also choose to turn on Sentry Mode automatically when the vehicle is parked or activate it using the Tesla mobile app. Voice commands like "Keep Tesla safe," "Keep my car safe," "Sentry on," or "Enable Sentry" can also be used to enable the feature.
Enable Sentry Mode from the Controls menu
Not a Tesla App
How Long Does Sentry Mode Stay On
Once Sentry Mode is enabled, it will remain on until you turn it off, or when your battery reaches 20%. If the battery falls below this level, Sentry Mode will turn off, and you will receive a notification via the Tesla app. Since Sentry Mode increases power consumption, Tesla turns it off automatically to leave you with enough energy to reach your destination.
Sentry Mode Battery Drain
Since your vehicle's computer needs to remain on to process video from its various cameras, there is additional power usage while Sentry Mode is enabled.
The actual amount of power consumed varies based on your vehicle's specific hardware, but tests have shown that the vehicle will consume about 250 to 300 watts while Sentry Mode is on. This is equivalent to losing about 1 mile of range for every hour Sentry Mode is enabled.
In a day, Sentry Mode may consume as much as 7.2 kWh, about 24 miles of range, or roughly equivalent to 7% to 14% of your battery, depending on your model and battery size.
Since Sentry Mode consumes so much energy, it's best to use it only when needed. Sentry Mode is not meant for when your vehicle will be parked long term, as it'll quickly drain your battery. Luckily, Tesla offers options to automatically enable Sentry Mode at specific locations and Sentry Mode is automatically disabled when the vehicle's battery falls to 20%.
Sentry Mode Options
You can customize Sentry Mode settings to fit your preferences and requirements. Some options available include:
Disabling sounds: If you want to silence the security alarm and audio system when the alarm is triggered, navigate to Controls > Safety > Disable Sentry Sounds. Sentry Mode will still send a notification through the mobile app and save the last 10 minutes of footage of any events that occurred.
Excluding specific locations: In Controls > Safety > Sentry Mode, you can choose not to enable Sentry Mode in particular areas, such as your home, work, or favorite destinations. This can be helpful if you want to conserve battery power or avoid unnecessary recordings in familiar areas.
Choosing the clip length: In some markets (Not available in the U.S. and Canada), you can select the length of Sentry Mode video clips, allowing you to customize how much footage is saved during an event.
Disabling camera detection: If you prefer, you can disable camera detection so that Sentry Mode only activates when the car senses a physical intrusion. This can be helpful in situations where you want to minimize the number of false alarms or unnecessary recordings.
How to Set Up Sentry Mode
First, insert a compatible USB drive into the glove box USB port. If your car doesn't have a USB port in the glove box, you can use one in the center console. Note that not all Teslas have data-capable USB ports in the center console, so the glove box should be your first choice. Chances are that Tesla already included a compatible USB drive in the car for you. Tesla defines a compatible USB drive as one that is USB 2.0 compatible and holds at least 64 GB. This Samsung USB drive is a good choice for Sentry Mode because of its durability and size. It offers fast write speeds and 256GB of storage, 4x Tesla's recommendation.
Next, you can format the USB drive by going to Controls > Safety and tap on "Format USB Drive." Tesla recommends using a high-quality USB drive to ensure smooth recording and playback of Sentry Mode videos. You can also enable Dashcam recording. Navigate to Controls > Safety > Dashcam in your vehicle's menu and set it to Auto. This will allow your vehicle to automatically record footage while driving. Footage will automatically be recorded when an event is detected or when you tap the Dashcam icon under Controls > Dashcam.
How to View Sentry Mode Recordings
You can review your Sentry Mode video with the Dashcam Viewer app in the car
Not a Tesla App
To view Sentry Mode or Dashcam videos, use the Dashcam app in your vehicle. The Tesla system tags events with a red dot, making locating and reviewing footage easier. This feature allows you to quickly identify any incidents around your vehicle and gather evidence if necessary. Remember to regularly check your USB drive's storage capacity, as new recordings will overwrite the oldest ones when the drive is full. It's a good idea to back up important footage to a separate storage device for safekeeping.
Sentry Mode Live Access
You can view live footage from your vehicle in the Tesla app
Not a Tesla App
Sentry Mode Live Access lets you view your vehicle's cameras in real-time using the Tesla mobile app. This feature requires Tesla's Premium Connectivity. When using View Live Camera, your vehicle will periodically flash its exterior lights and displays a message on the touchscreen, notifying others that the area surrounding the vehicle is being viewed through the cameras.
To enable the View Live Camera feature, touch Controls > Safety > Sentry Mode > View Live Camera via Mobile App on the car's touchscreen. First, ensure no occupants are in the vehicle, and all doors are locked. Then, navigate to Safety > Sentry Mode > View Live Camera in the Tesla app. The live camera feed is fully encrypted and cannot be accessed by Tesla, ensuring your privacy. View Live Camera is limited to approximately one hour (or 15 minutes for some regions) of cumulative usage per day. Although Sentry Mode Live Access is widely available, it is not currently available in all markets.
If your vehicle is equipped with a pedestrian warning speaker you can press and hold the microphone button in the app to transmit your voice through the speaker, potentially deterring would-be intruders or vandals.
When Dog Mode or Sentry Mode are enabled, you can also switch the live camera view to see through the vehicle's interior camera. This can be useful if you want to check on your pet while away from the vehicle. Note that this feature is not supported in vehicles with Autopilot computer 2.0 or 2.5.
Tesla Sentry Mode is a valuable security feature that can help protect your vehicle from potential threats. By following the steps provided, you can set up, enable, and customize this feature to fit your needs. As a Tesla owner, using Sentry Mode can give you peace of mind, knowing that your car is actively monitoring its surroundings for potential threats. While no security system can prevent all attacks, Sentry Mode offers an added layer of protection that can help deter criminals and keep your vehicle safe.
Subscribe
Subscribe to our newsletter to stay up to date on the latest Tesla news, upcoming features and software updates.
Every Tesla vehicle is filled to the brim with modern and advanced features - and there is a massively complex network of devices powering that - from the FSD and infotainment computers, to the various networked sensors throughout the vehicle.
That massive network of wiring is traditionally run on a system called CAN, or the Controller Area Network - which was developed by Bosch all the way back in the 1980s. Since then, it has been the industry standard for in-vehicle part-to-part communication for decades.
However, just like the horse and buggy, it may be time for CAN to be put out to pasture as it struggles in the data-driven modern environment. Massive amounts of sensor data, high-resolution infotainment screens, over-the-air (OTA) updates, and centralized Electronic Control Units (ECUs) mean that the old standard just can’t keep up anymore.
Tesla is now actively developing and deploying a next-generation vehicle network to replace CANBUS, and this new network will likely function in synergy with the move to the new 48-volt low-voltage architecture being pioneered by the Cybertruck.
CANBUS - The Old Workhorse
CANBUS was originally developed in 1983, released in 1986, and then standardized by the International Standards Organization (ISO) as ISO 11898 in 1993.
It’s a venerable standard that was revolutionary at the time, as it drastically reduced wiring complexity compared to the point-to-point methods being used in the late 80s and early 90s, and saw immediate mass adoption across the entire industry.
CAN is a message-based protocol, where nodes broadcast data with identifiers. The priority of packets determines their movement and access. However, CAN 2.0 and CAN FD are both extremely limited - CAN 2.0 is limited to a glacial 1Mbps, and ~8Mbps for the more “modern” CAN FD.
CAN FD barely makes the mark for 1080p video streaming at 60fps - if it is pre-encoded. Unencoded raw video surpasses what CAN FD is capable of, and greatly limits its capabilities and usages in a modern data-first vehicle like a Tesla.
CAN is also complex - it is simpler than a point-to-point wiring system, but the multiple CAN buses and gateways result in a complex, heavy, and costly wiring harness that can be next to impossible to diagnose, repair, or replace.
Tesla’s Next-Gen Networking
Tesla’s next-gen networking is all about timing - and unlike CAN, where two messages coming in at the same time can collide (resulting in neither reaching the node), Tesla’s TDMA, or Time Division Multiple Access, assigns specific time slots. This means that access to each node or data point is guaranteed and avoids interference.
You can think of CAN being like everyone yelling in the same room - but TDMA being a tightly scheduled series of one-on-one meetings.
However, TDMA isn’t just a simple sorting system. According to Tesla's patent application, the network operates in repeating cycles. At the start of each cycle, a Network Allocation Map (MAP) is transmitted. Think of this MAP as the dynamic schedule for that cycle – it tells every node exactly which time slots are reserved for which communications. Each reservation specifies the transmitting node, the receiving node, the duration of the slot, and, crucially, the type of traffic it is for.
This allows for sophisticated Quality of Service (QoS) management, separating data into different categories. The patent specifically calls out two main types:
Low Latency (LL) Traffic: These are for critical, time-sensitive signals (think sensor readings for FSD, airbag triggers, control commands). They get assigned short time slots that repeat very frequently within the TDMA cycle (potentially every 500 microseconds, according to one example in the patent) to guarantee delivery within a strict maximum delay. The data packets themselves are kept small, maybe only tens of bytes, to fit these quick slots.
Bulk Traffic: This is for data where total volume is more important than millisecond-level delay (think infotainment data, camera video feeds, maybe larger data logs). These get assigned longer time slots, allowing for larger data packets (over 100 bytes in one example), ensuring high overall throughput even if they don't repeat as often as the LL slots.
This whole system relies on precise synchronization across all nodes. The patent mentions synchronization signals within the TDMA cycle and specialized modem hardware to keep everything perfectly timed.
The network can also be structured into logical domains (like front-left, cabin-right, etc.), each managed by a Domain Master node that handles the MAP and communication within that zone. So, TDMA isn’t just a sorting system; it's a highly managed network implementing traffic prioritization (LL vs. Bulk), dynamic slot allocation via the MAP, and potentially managed by centralized Domain Masters, all designed for efficiency and reliability.
48-Volt and LVCS
Many of these networking concepts appear designed to work hand-in-hand with Tesla’s recently-released LVCS - or Low Voltage Connector Standard. LVCS simplifies vehicle wiring networks by drastically reducing the number of connector types needed from over 200 down to just six. While the patent focuses on the data protocol, LVCS simplifies the physical layer, and the 48V architecture it's built on also enables using the vehicle's DC power lines as a potential network medium (PLC), helping to reduce complexity.
Tesla has been utilizing these new approaches in the Cybertruck, as evident in their new and unique interactive wiring diagram, which helps technicians debug wiring issues. We can expect even more features to take advantage of the new capabilities in the future.
48V also means thinner wires, which reduces costs, and LVCS simplifies the connectors on both the harness and nodes - which means less part complexity, further simplifying the manufacturing and supply chain, while also ensuring vehicles are more repairable.
Wrapping Up
This is another innovation that Tesla is introducing to its fleet - and while we initially looked at it and thought, “Wires? How boring,” we soon realized that it is, in fact, the skeleton that Tesla will use to build its future systems.
That means smoother, faster, and more robust FSD data transfer within the vehicle, resulting in snappier and more effective decision-making. A quicker and more functional infotainment system and better support for deep-reaching OTA updates due to the reduced internal complexity and lack of reliance on internal CAN buses, which couldn’t be updated.
This is a massive technological leap over the decades-old CAN bus system, and while it may be invisible to the average user, it is an excellent example of all the engineering that goes on in under the hood of every Tesla vehicle.
Tesla’s ambitious 4680 cell program has been pivotal for its vehicle roadmap - and in particular, for the Cybertruck. Bonnue Eggleston, Tesla’s Senior Director for the 4680 cell project at Tesla, recently sat down with Sandy Munro on Munro Live, offering valuable insights into cell development, manufacturing hurdles, and Tesla’s future trajectory. You can watch the video in its entirely below.
The 4680 cell, like many batteries, is characterized by its dimensions: 46mm in diameter and 80mm long. Tesla is currently producing the 2nd generation of the 4680 - internally known as the Cybercell - which is shipped with every variant of the Cybertruck. This Gen 2 variant is a considerable step up from Gen 1 - whose limited production was cancelled following the slow charging issues with the 4680 Model Y.
Prototypes are Easy; Production is Hard
Bringing the 4680 from a concept cell to mass production hasn’t been easy, but according to Tesla, it has now become Tesla’s cheapest cell per kWh. Eggleston emphasized in the video that scaling up was an immense challenge - and required an extreme attention to detail.
With a team possessing a broad skill set, it took considerable effort to bring the 4680 to life, starting from the raw electrode material and progressing through the crucial formation process.
Breaking Barriers
To overcome these hurdles, Eggleston’s team leaned into innovation and focused on new processes that had not been utilized in the battery world yet. The groundbreaking new dry electrode process is the key here, which eliminates the use of toxic solvents and large ovens required in traditional production methods. This reduces internal factory footprint, while also being cleaner and safer, building a better cell from the ground up.
Complementing this, Tesla has also been developing a custom electrolyte formulation in-house, tailored specifically for their anode, cathode, and separator materials, all aimed at expanding their deep vertical integration.
This vertical integration has been key to the 4680 program, and Tesla has further extended it, with in-house production of components like cell cans serving to optimize the process and reduce waste. Eggleston also pointed out the unique terminal design on the 4680, which allows for easier and more reliable welding, contributing to the high production output that Tesla is aiming for.
Sustainability
On the sustainability front, Tesla has been hard at work recovering and recycling materials right from the manufacturing line to minimize waste. Eggleston highlighted this as part of Tesla's effort to promote sustainability, which ties in with the environmental benefits gained from avoiding solvents in the dry electrode process.
Structural Battery Packs
While the 4680 is intrinsically linked to the Cybertruck, we expect Tesla to expand this to its future vehicles eventually - whether through use of the specific cell format, or the technologies learned through its development. Eggleston noted that the efficiency of the Cybertruck is partly due to his team’s cooperation and work with the vehicle team. The structural battery pack minimizes weight and provides additional support and protection to the cabin and occupants.
4680 in the Future
Eggleston expressed a considerable amount of confidence in Tesla’s 4680 program and the progress - citing significant improvements in throughput, yields, and product quality since he took leadership.
He acknowledged the ambitious targets that Tesla and Elon have set - and mentioned that the use of metrics like headcount per gigawatt helps drive production efficiently. This metric essentially measures labor efficiency – producing more battery capacity (gigawatt-hours) with fewer people indicates a more streamlined and cost-effective manufacturing process.
While Eggleston hinted at future developments, and we have previously heard of Tesla working on even more cells for the future, the battery technology race has been progressing rapidly around the world. While Tesla has been pushing 4680 production and deploying 325kW-capable Superchargers (and soon 500kW), they continue to face challenges from the competition.
Brands like China’s Zeekr are demonstrating new LFP batteries capable of charging from 10-80% in under 10 minutes, while achieving sustained speeds of 400kW+. Currently, the Cybertruck can only sustain the 325kW cap speed for a few minutes at best, resulting in a sub-par charging curve compared to upcoming competitors.
Tesla will have to focus on developing and producing new cells that maintain that cost-competitive advantage the 4680 has built, while also achieving faster charging speeds across its entire lineup. For now, these new faster charging speeds are restricted to the Cybertruck, but with refreshes for the Model S and Model X on the horizon, we expect that Tesla’s updated flagship vehicles will make the best use of this tech until it is ready for the rest of the lineup.
![Tesla’s Hollywood Diner: In-Car Controls & Theater Screens Turned On [VIDEO]](https://www.notateslaapp.com/img/containers/article_images/2025/tesla-diner.webp/3aaa2ea0edf2eaa0fabe1217530f3476/tesla-diner.jpg)
_300w.png)
