Over-the-Air Updates: Convenience or Nightmare?

For decades, buying a car meant the vehicle you drove off the lot was the same vehicle you would own five years later. The features, horsepower, and quirks were permanent. Today, modern vehicles from manufacturers like Tesla, Ford, and Rivian function more like smartphones on wheels. They receive Over-the-Air (OTA) updates that can add range, improve braking, or change the user interface overnight.

While the convenience of fixing a recall from your driveway is undeniable, there is a darker side to this technology. A growing number of owners have woken up to find their vehicles “bricked” or stripped of features they used daily. This article examines the reality of software-defined vehicles and specific incidents where updates went wrong.

When an Update Becomes a Brick

The term “bricked” comes from the tech world. It refers to an electronic device that has suffered a software corruption so severe it becomes as useful as a brick. In the automotive world, a bricked car is a nightmare scenario where the vehicle will not start, open, or drive.

The Rivian “Fat Finger” Incident

One of the most high-profile examples occurred in November 2023 with Rivian. The electric truck manufacturer pushed out an OTA update (version 2023.42.0) to its R1T and R1S models. Unfortunately, the update contained the wrong security certificate.

This error caused the infotainment systems in thousands of vehicles to go black. While the trucks could still drive, owners lost access to climate controls, navigation, and critical vehicle settings. For some, the vehicle was effectively unusable in cold weather because they could not turn on the defrost or heat. Rivian had to scramble to provide a fix, and while some were resolved remotely, other owners faced the hassle of physical service visits.

The Ford Mustang Mach-E “Deep Sleep”

In the early days of the Mustang Mach-E, Ford encountered significant growing pains with OTA updates. During 2021 and early 2022, several owners reported that their vehicles entered a “deep sleep” mode during an update and never woke up.

The issue was often linked to the 12-volt battery. The high-voltage battery moves the car, but the smaller 12-volt battery runs the computer systems. If the update took too long or the power management logic failed, the 12-volt battery would drain completely. Once that battery died, the computer could not instruct the main battery to charge it. The result was a brand-new electric SUV that had to be towed to a dealership to be revived.

Lucid Motors and the “Red Screen of Death”

Lucid Motors, known for the luxury Air sedan, has also faced teething issues. Owners on the Lucid Forum have documented instances where an update stalled mid-process. Instead of reverting to the previous version, the car displayed warning errors—sometimes referred to by owners as the “red screen of death”—and refused to shift into gear. These incidents highlight a critical vulnerability: if the internet connection drops or a file is corrupted, the car lacks a robust backup partition to reboot safely.

Feature Removal: The Digital Bait and Switch

Perhaps more frustrating than a temporary glitch is the intentional removal of features. Because the manufacturer retains control over the software, they can disable hardware functionality remotely. This has raised questions about ownership rights. Do you own the features in your car, or are you just licensing them?

Tesla and the Removal of Radar

Tesla is the pioneer of OTA updates, but they are also the most aggressive with feature changes. In the shift toward “Tesla Vision” (a camera-only approach to autonomous driving), Tesla disabled the radar sensors in many existing vehicles via software updates.

Furthermore, they removed functionality for ultrasonic sensors (USS) in newer models and disabled related software features. This meant that owners who previously had accurate parking assist chimes and distance measurements suddenly found themselves with a degraded experience. Features like “Smart Summon” and “Autopark” were temporarily disabled or functioned poorly compared to the previous version. Owners watched as their car’s capabilities regressed overnight.

The Boombox Recall

Sometimes, feature removal is mandated by the government. Tesla introduced a “Boombox” feature that allowed owners to play custom sounds outside the vehicle through the external speaker. It was a fun party trick.

However, the National Highway Traffic Safety Administration (NHTSA) ruled that this violated pedestrian safety standards because it could obscure the mandatory pedestrian warning hum that EVs must emit. Consequently, Tesla had to issue an OTA recall that disabled the Boombox feature while the vehicle was in Drive, Neutral, or Reverse. While done for safety, it was a stark reminder that features can be revoked at any time by regulatory pressure.

The Subscription Trap

OTA technology has also enabled a new revenue model for automakers: the subscription service. This is where the nightmare shifts from technical failure to financial frustration.

BMW’s Heated Seats Controversy

In 2022, BMW faced a massive public backlash when it began experimenting with subscription-based heated seats in certain markets, such as South Korea. The hardware (heating coils) was already installed in the car at the factory. However, the software block prevented the owner from using them unless they paid a monthly or yearly fee.

While BMW eventually walked back some of these plans due to consumer outrage, the infrastructure for “Features on Demand” remains. OTA updates allow manufacturers to audit your vehicle remotely and ensure you haven’t accessed features you haven’t paid for continuously.

Mercedes-Benz Acceleration Increase

Mercedes-Benz offers an “Acceleration Increase” subscription for its EQE and EQS electric models. For a yearly fee (often around $1,200), the car unlocks additional horsepower and torque, shaving seconds off the 0-60 mph time.

The electric motors are physically capable of this speed from day one. The software update simply removes an artificial limiter. This implies that owners are buying a car that is intentionally held back by software, only to be “upgraded” later for a fee.

Best Practices for OTA Updates

Despite the horror stories, OTA updates are here to stay. They save automakers billions in warranty costs and save owners trips to the dealer. If you own a modern connected vehicle, here is how you can minimize the risk of a bad update.

• Don’t Be a Beta Tester: Unless you are tech-savvy and willing to deal with bugs, turn off “Automatic Updates.” Wait a few days or weeks after a new version is released. Check owner forums (like Reddit or specific brand forums) to see if others are reporting issues.
• Park Safely Before Updating: Never start an update if the car is parked in a location where a tow truck cannot reach it. If the car bricks in a tight parking garage or on the street, recovery becomes difficult and expensive.
• Ensure Strong Wi-Fi: Many corrupted updates happen due to packet loss during the download. Ensure your garage or driveway has a strong Wi-Fi signal. If necessary, install a Wi-Fi extender near where you park the car.
• Keep the 12V Battery Healthy: A weak 12-volt battery is the leading cause of update failures in EVs. If your car is older, have the small battery tested regularly.

Frequently Asked Questions

Can I refuse an OTA update permanently? It depends on the manufacturer. Some updates are optional and relate to infotainment features. However, updates related to safety recalls or critical powertrain logic are often mandatory. If you refuse them, you might void your warranty or face liability issues if a safety defect causes an accident.

What happens if my car bricks out of warranty? This is a gray area. Generally, if a manufacturer pushes an update that breaks your car, they cover the repair even if the warranty has expired, as the damage was caused by their action. However, you may have to fight for this coverage. Always document the time of the update and the subsequent failure.

Do OTA updates use my cellular data? Most large updates require a Wi-Fi connection. Some manufacturers include a premium connectivity package that allows updates over the car’s built-in cellular network, but major system overhauls usually require Wi-Fi to save data costs and ensure stability.

Can an OTA update improve my car’s resale value? Yes. Updates can add tangible value. For example, Polestar and Tesla have both released updates that increased the range of their vehicles by optimizing battery management. A car with better range and a faster interface is worth more on the used market than one running outdated software.