Fisker's Open Source Bet: A Case Study in Automotive Hail Marys

Fisker’s “Open Source” Bet: A Hail Mary for the Automakers Who Can’t Pay the Piper

When a company faces the precipice of bankruptcy, its strategic decisions often morph from calculated risks into desperate gambits. Fisker Inc.’s June 2024 Chapter 11 filing, which effectively halted OTA updates and support for its ~11,000 Ocean owners, thrust the brand into a state of accelerated decay. What followed was not a corporate decree to embrace open source, but a groundswell of owner-led reverse engineering. This wasn’t a strategic move to foster community or innovate; it was an act of survival by the end-users, a stark illustration of what happens when a company outsources its product’s long-term viability without a plan for its foundational software.

The notion of Fisker voluntarily opening its source code is a fiction. The reality is that Fisker Ocean owners, finding their vehicles slowly bricked by defunct cloud services and a lack of official support, took matters into their own hands. The formation of the Fisker Owners Association (FOA), a non-profit funded by owner dues, became the de facto engineering department. This grassroots movement has systematically reverse-engineered proprietary software, delved into the intricacies of the vehicle’s CAN bus networks, and even secured access to a proprietary diagnostic tool, the “Fisker After Service Tool” (FAST). This is less an open-source strategy and more a collective bargaining agreement for vehicle maintainability, born out of necessity.

The Illusion of Openness: Software vs. Hardware Commons

The allure of “open source” in the automotive space is undeniable, promising rapid innovation and community-driven improvements. However, the Fisker situation highlights a critical misunderstanding: open-sourcing software for a consumer gadget is fundamentally different from open-sourcing the complex, safety-critical firmware of a modern automobile.

Fisker’s vehicles are built on a foundation of proprietary code, likely incorporating third-party embedded systems for which Fisker itself may not hold the ultimate rights. Reddit discussions reveal the inherent licensing headaches: if a GSM module’s firmware, or a specific sensor’s communication protocol, is closed-source, how can the encompassing vehicle software truly be “open”? This isn’t merely an academic concern; it’s a regulatory minefield. Automotive safety certifications, like the FMVSS standards, rely on a controlled, auditable software stack. Releasing core vehicle control code without manufacturer backing or validation could, and likely would, invalidate these certifications, rendering the vehicles illegal to operate on public roads. This contrasts sharply with consumer electronics, where the consequences of open API access are typically financial or competitive, not safety-related.

The FOA’s efforts to piece together functional integrations, such as the Apache 2.0 licensed Home Assistant integration for cloud API access, are commendable achievements. This project, with over 135 commits, exposes Fisker’s cloud API values as sensors and controls, offering a glimpse into the communication channels. A command like curl -X GET "https://api.fiskerinc.com/v1/vehicles/{vehicle_id}/battery" would be the kind of interaction this reverse-engineered API aims to replicate. Yet, this API access is a façade built on top of proprietary cloud services. The underlying vehicle firmware remains a black box.

Under the Hood: CAN Bus as the Lingua Franca of Desperation

The true hacking frontier for Fisker owners lies within the vehicle’s CAN (Controller Area Network) bus. Fisker Ocean vehicles employ multiple CAN bus networks, including CCAN, PTCAN, Inverter CAN, and BCAN, typically operating at 500kbps. These networks are the nervous system of the car, where ECUs (Electronic Control Units) exchange data about everything from battery temperature to door lock status.

To reverse-engineer this, owners are meticulously mapping DBC (Database CAN) files. These files act as dictionaries, translating the raw hexadecimal messages transmitted over the CAN bus into human-readable signals. For example, a raw message like 0x1A2B3C4D 0x01 0xFF 0x00 might be decoded via a DBC file to mean “Battery Temperature: 25.5°C, Charging State: Active.” The FOA’s efforts in systematically mapping these DBC files are crucial for enabling any kind of third-party diagnostic or control software.

Under-the-Hood Explanation: The CAN bus operates on a broadcast mechanism. When an ECU sends a message, all other ECUs on the same bus “listen.” Messages are prioritized based on their ID; lower IDs have higher priority. This arbitration process ensures that critical messages (like brake commands) are not delayed by less important ones (like infotainment status). Reverse-engineering involves sniffing these messages, correlating specific message IDs with observable vehicle behavior, and then inferring the meaning of the data payload. This is a painstaking process, akin to deciphering a foreign language by observing physical actions.

A Fragile Ecosystem Built on Third-Party Access

The FOA’s self-funded model, with approximately $3M annually generated from ~4,000 members paying $550 dues, is a testament to the dedication of Fisker owners. This funding has supported the development of tools like “OceanLink Pro” and “OceanLink Pulse” by UnderCurrent Automotive, a company spun out of the FOA. These third-party solutions provide basic EV features, attempting to fill the void left by Fisker.

However, this community-driven support structure is inherently fragile. The breakdown of the partnership with American Lease, a commercial rental firm that purchased Fisker’s inventory and secured a $2.5 million software licensing deal, vividly illustrates this precarity. American Lease initially extended cloud access to private owners via a handshake with the FOA, but this arrangement was abruptly terminated. This highlights the critical dependency on external, non-community-controlled entities for core functionalities, particularly cloud services that Fisker vehicles were architecturally designed to rely upon. Without access to the original manufacturer’s cloud infrastructure, basic functions like remote battery monitoring or climate control, even with third-party apps, can cease to function at a moment’s notice.

This mirrors the vulnerability seen when companies arbitrarily restrict API access, as we discussed in OpenAI’s Hypocrisy: Why API Restrictions Choke Developer Innovation. While Fisker’s situation is driven by bankruptcy rather than corporate policy, the impact on end-users who have built integrations and dependencies is similarly severe.

Bonus Perspective: The Unintended Consequence of “Embracing” Open Source Post-Mortem

Fisker’s situation offers a cautionary tale for any automotive manufacturer contemplating an open-source path. When “open source” is an afterthought, a desperate measure to offload costs after a business model collapses, it carries significant risks:

1. Legal and Regulatory Entanglement: As mentioned, open-sourcing critical vehicle code without proper licensing, validation, and regulatory sign-off can lead to immediate compliance issues. This isn’t about licensing software like an app; it’s about certifying a multi-ton vehicle for public roads.
2. Fragmented Development and Safety Concerns: Without a central maintainer (which Fisker can no longer provide), community-driven development can become fragmented. Different groups might pursue different solutions for the same problem, leading to inconsistent patches and potential safety regressions. The previous Fisker software update (version 2.2) bricking 10% of cars serves as a stark reminder of the fragility of software deployment in this context, even from the manufacturer.
3. Limited Scope of “Openness”: True open source implies access to build tools, cryptographic keys for signing updates, and the core bootloader. Reverse engineering APIs and CAN bus messages provides a limited view. It allows owners to observe and influence, but not fundamentally rebuild or certify the core systems. This leaves owners with a vehicle that can be patched, but not truly owned in the software sense.

The Fisker owners’ plight underscores that open source is most effective when it’s a proactive, strategic choice—a commitment to transparency and community collaboration from the outset, as explored in our piece on The Value of Free and Open-Source Software. When it’s a reactive measure born from corporate failure, it becomes a testament to the resilience of users, not the foresight of a business.

Opinionated Verdict

Fisker’s “open source” narrative is not a story of corporate innovation, but a painful post-mortem conducted by its owners. The community’s heroic efforts to keep their vehicles functional are a powerful argument for user rights and the potential of decentralized problem-solving. However, the fundamental architectural dependencies on proprietary cloud services and the insurmountable regulatory hurdles mean that these efforts will likely result in a fleet of cleverly maintained, but ultimately un-updatable and potentially non-compliant, machines. For manufacturers considering the open-source path, Fisker serves as a brutal lesson: true open source is a strategic investment, not a bankruptcy liquidation sale.