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Tesla publishes guide to retrieving crash event data from a vehicle’s black box recorder

Tesla Model X saves family after a horrific head-on crash [Photo: Jonathan Braman]

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Tesla is now allowing owners of its vehicles to access their cars’ Event Data Recorder (EDR), commonly known as the ‘black box’ of autos, through a set of licensed tools and software.

As noted by Tesla on its official help page for its EDR user guide, all of the company’s vehicles save for the original Roadster are equipped with an Event Data Recorder. The recording devices are only activated once the vehicle senses a non-trivial physical occurrence in the vehicle. Thus, during normal driving conditions, the EDR is deactivated.

In the event that data logs from the EDR need to be accessed, however, Tesla’s new set of proprietary tools and software can retrieve data from the vehicle’s black box. The following hardware is required to gain access to the data to the Model S, X, and 3’s EDR.

  • A Windows computer (Mac OSX and Linux are not supported)
  • A PCAN-USB, which is a USB-to-CAN adapter manufactured by Peak System
  • The appropriate Tesla Model S, X, or 3 cable from the EDR Retrieval Hardware Kit

On the software front, Tesla owners are required to have the necessary device drivers for the PCAN-USB adapters and Tesla’s EDR Retrieval Program, which could be downloaded here for free. Using Tesla’s software, owners can generate a PDF report outlining the findings from their electric cars’ data recorder.

As noted by the NHTSA, data from EDRs usually include readings on the vehicle’s speed, as well as inputs from its accelerator, brakes, and steering. The status of the car’s ABS activity, stability control, and whether the driver was wearing a seatbelt are usually part of EDR readings as well.

While the software needed to access the data is free, Tesla does require Model S, X, and 3 owners to purchase the EDR Hardware Retrieval Kit from Crash Data Group to gain access to their EDR’s contents. The hardware kit is priced at $995, though pre-orders for the equipment are available for $795. The EDR kit is compatible with in-vehicle retrievals and direct-to-module retrievals.

One thing of note is that the EDR data that Tesla is allowing its customers to access through its hardware kit and software is not the same data that the company uses when citing Autopilot logs in the past. As noted by artificial intelligence developer Dr. Lance B. Eliot in an AI Trends report, the data that Tesla cited during the investigation of the fatal Model S crash back in 2016 actually came from the electric car’s Electronic Control Unit (ECU), not its EDR. As the NTSB found out during its investigation, Tesla is quite protective of its ECU data, with the information being recorded in a proprietary format that can only be accessed and read by the California-based firm.

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As we noted in a previous report, Tesla is continually improving the safety features of its vehicles. Just recently, a major crash involving a Model 3 prompted a quick response from Tesla CEO Elon Musk, who announced improvements for the mass market electric car’s glove box and center touchscreen.

Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla Semi catches fire in California: what we know

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Credit: KTVU

A Tesla Semi caught fire in Hayward, California, which caused both directions of traffic to shut down for hours before being completely reopened early on Wednesday, the California Highway Patrol said.

The fire occurred just after 5:30 local time in Hayward on Tuesday, as the Semi caught fire in the southbound lanes of I-880 before CHP officials made the decision to shut down both lanes of traffic due to potential risks from hazardous chemical smoke.

There were no injuries reported.

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The cause of the fire is currently unknown, as neither Tesla nor the CHP have not determined a cause.

However, some images taken before the Semi was completely destroyed by the fire seem to indicate this might have been an older unit, as it appears to be one of the designs that Tesla shipped as part of its pilot program, before revising it and starting mass production just a month ago.

At the time of publication, CHP had not returned our request for a comment for additional details, including the Semi involved and any potential collaboration on an investigation between the CHP and Tesla. We will update this story when we hear back from them.

The southbound lanes were reopened at 3:30 a.m. on Wednesday, with the northbound lanes opening last night a few hours after the fire began. The CHP did state that the lithium batteries were “incredibly difficult to extinguish,” according to NBC Bay Area.

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The truck’s driver said that the Semi caught fire, but he did not have an explanation.

An estimated 5,000 to 7,000 semi-truck and large commercial vehicle fires occur on U.S. roadways every year.

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Tesla’s ‘Emergency Drive Away’ function gets its first use in the real world

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Credit: Tesla

Tesla’s launch of the “Emergency Drive Away” function a few months back offered owners a safe option to evacuate an area if they were in reasonable danger. The function finally got its first use in the real world, but it appears it was by mistake.

A video shared by u/Joshalander in the r/TeslaLounge subreddit recorded the instance from his vehicle and said the incident took place in Austin this past weekend during the city’s F1 Race.

“Was charging around 6 AM this past Sunday in Austin before heading to the F1 race and heard a pop. Looked over and saw the new emergency drive-away feature in action. Genuinely felt bad for the dude when he got out and realized what happened, since he looked exhausted and only seemed to half-read the prompts.”

Emergency Drive Away unlatches the Supercharger connector from the vehicle, but still causes damage to both the car and the Supercharger. Tesla has said that it will cost up to $25,000 in repairs to have everything fixed back to normal.

Additionally, the company said that if it were not used in an emergency situation, the driver of the vehicle who activated the Emergency Drive Away feature would be responsible for all repair costs.

Tesla constitutes the following situations as reasonable justifications for activating the feature:

  • You face an immediate threat to your life or personal safety.
  • You must leave the area immediately.
  • Exiting the vehicle is unsafe.
  • Unplugging the charge connector would unreasonably delay your departure or expose you to a risk to your personal safety.

After using the feature, Tesla requires the driver to schedule Service so the car can be inspected.

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Tesla’s Cybercab battery design could make robotaxis even cheaper

Tesla built the Cybercab’s battery pack with spare room for a future switch to LFP.

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Tesla built the Cybercab’s battery pack with empty space inside it on purpose, and the reason points to a cheaper robotaxi down the road.

Robert Sumpf, Tesla’s director of mechanical design engineering for battery modules and packs, said the extra room beside and beneath the Cybercab’s modules was left there so the company can move to lithium iron phosphate cells later. “So, we protected this pack to go to an even lower energy dense chemistry as we scale and need to bring LFP into the platform,” Sumpf said in a Cybercab deep dive with Munro Live.

The Cybercab runs on Tesla’s own 4680 cells with a nickel chemistry today. LFP cells store less energy for their size, so a straight swap would cut range. The reserved space lets Tesla add more LFP cells to make up the difference. In return, Tesla would get cells that cost less, run cooler and survive more charge cycles. LFP became the most used EV battery chemistry in the world last year.

Not all of that room was planned for a chemistry change. Lars Moravy, Tesla’s Vice President of Vehicle Engineering, said part of it exists because “we didn’t need as many batteries as we thought we did.” Tesla told Sandy Munro in early 2025 that it was targeting a Cybercab pack under 50 kWh with close to 300 miles of range.

The pack also breaks from the structural design Tesla used in some Model Y and Cybertruck builds. Instead of potting hundreds of cells into one block, the Cybercab uses four separate, individually sealed modules, so a bad module can be replaced without scrapping the whole pack. Sumpf was blunt about the older approach, giving the Model Y structural battery “a grade D” because it was hard to build and nearly impossible to repair. He estimated a fully structural pack gains about 10% more cell volume, but said “the issue is the service cost.”

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That cost matters more for a car that rarely sits parked. Cybercab chief engineer Eric Earley said replacing an entire pack “before half a million miles is a killer on cost,” which is why remanufacturing and serviceability were built into the design from the start.

The same Munro Live tour produced Moravy’s admission that the Cybercab line at Giga Texas is now outpacing Robotaxi deployments, along with a look at the robotaxi’s unorthodox paint process. Tesla is aiming to deliver the first Cybercabs to outside customers by the end of 2026, though Elon Musk has said the vast majority will stay owned by Tesla and run as a transport service.

Sumpf did not give a date for an LFP version, name a cell supplier or say how a chemistry change would affect range. For now, the 4680 cars keep piling up: Texas DMV records from Tuesday list 544 Cybercabs authorized for Tesla’s Robotaxi fleet, more than the 507 Model Ys on the same roster for the first time.

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