Like smartphones, cars can now receive software updates through Car OTA Updates (over-the-air updates). However, these updates aren’t just about refreshing the infotainment screen.
In compatible vehicles, OTA technology can fix software bugs, update navigation, improve cybersecurity and, in some cases, even revise the software responsible for driving-related systems.
Join Our Youtube Channel to stay updated with daily car & bike news instantly!
With the increasing use of connected cars and electric vehicles, OTA updates are becoming an important part of the automotive industry. But an important question remains: Can software updates also improve your car’s mileage, performance, or safety features? The answer is yes, in some situations, but not for every car or every update.
Also Read: 60kWh EV vs 1.5 Turbo Petrol: 5-Year Running Cost Explained
What Are Car OTA Updates and How Do They Work?
OTA stands for Over-the-Air. In this technology, the automaker sends software or firmware updates to compatible vehicles via a wireless network. The connection can be via a built-in cellular network, such as 4G, or Wi-Fi. Its basic concept is similar to a smartphone update, but safety and compatibility checks are crucial for vehicle software.
The process begins with the automaker’s software development team. After the update is prepared and validated, it is released to eligible vehicles. The car downloads the update, and installation can begin automatically or with driver permission, depending on the system. Some updates may download in the background, while the vehicle may need to be parked during installation.
Not every car supports OTA updates. The vehicle must have compatible electronic architecture, communication hardware, and a manufacturer-supported software system. Some vehicles may only receive infotainment or navigation updates, while select newer models may also receive wireless updates to their control units.
What Can Your Car Actually Update?
1. Infotainment, Navigation, and Connected Features
This is the most familiar use of Car OTA Updates. Infotainment software, navigation data, interface-related functions, and connected services can be updated in compatible cars. This can fix software bugs, improve system stability, and make changes to supported features.
But one limitation is important to understand. Software updates do not automatically add missing hardware to the car. If the vehicle does not have the required camera, sensor, or compatible processing hardware, it will generally not be possible to activate the feature simply by installing the update.
2. Powertrain, EV Battery, and Charging Systems
Car OTA Updates in advanced vehicle architectures can affect engine or electric motor-related control software, battery management, and charging functions. Depending on the scope of the manufacturer’s update, changes may occur in software calibration or system behavior.
This is particularly relevant for EV owners, as the battery management system plays a critical role in charging, battery monitoring, and related operations. But this doesn’t mean that every update will increase driving range or improve charging speed. This can only happen when the manufacturer specifically releases the relevant improvements and the vehicle is eligible for those updates.
Also Read: Best Bikes for College Students Under Rs. 1.5 Lakh: Top Picks by Auto India Daily
3. ADAS and Driver-Assistance Systems
Advanced Driver Assistance Systems (ADAS) can include adaptive cruise control, lane-related assistance, and other driver-support functions. In supported vehicles, OTA updates can improve the software or operating behavior of these systems.
However, it would be incorrect to consider an ADAS update a physical hardware upgrade. Software updates do not automatically remove camera or radar limitations. And even after a software update, drivers must remain alert on the road and follow the instructions in the vehicle manual.
4. Cybersecurity and Software Bug Fixes
Software security is also important in connected cars. Manufacturers can provide security patches, bug fixes, and some software-related service remedies to eligible vehicles through OTA updates. This can reduce the need for dealership visits for each issue.
Ford also explains that software-based recall remedies can be delivered via OTA for some eligible vehicles. However, if the recall requires physical component replacement, inspection, or mechanical repair, a workshop visit may still be required.
SOTA vs. FOTA: What’s the Difference?
Software Over-the-Air (SOTA) generally focuses on areas such as application-level software, infotainment interfaces, navigation, and connected features. Firmware Over-the-Air (FOTA) is used to update relatively low-level software or firmware for electronic control units.
In simple terms, SOTA can be understood as connecting to the car’s digital features, and FOTA to the underlying control software for supported electronic systems. The actual terminology and update capability depend on the manufacturer’s architecture.
What Should You Do Before Installing an OTA Update?
Car OTA Updates are convenient, but they should not be installed without reading the instructions. Check the steps on the vehicle screen and the owner’s manual before starting the update.
- Safe parking: If the vehicle cannot be driven during installation, start the update only when you don’t need the car for a while.
- Battery level: Follow the manufacturer’s recommended battery or charge requirement. Conditions may differ for EVs and some conventional vehicles.
Stable connectivity: Ensure the required network availability for the download
- Installation instructions: Follow any specific instructions regarding ignition, doors, lights, and vehicle controls.
- Update details: Read the release notes and understand what changes the update makes. If installation fails or a warning appears, seek guidance from the manufacturer or authorized service center.
The same downtime should not be assumed for every OTA update. Some updates may be relatively quick, while others may take longer. The exact duration will depend on the vehicle and update package.
Auto India Daily Verdict
Car OTA Updates offer a useful way to improve vehicles through software throughout ownership. From infotainment fixes to updates for selected powertrain systems, EV charging and ADAS control software, their capabilities are expanding with modern vehicle architecture.
But buyers shouldn’t expect unlimited upgrades simply because they say “OTA updates supported.” When purchasing a car, check exactly which systems the updates are available for, how long they’ll last, the terms of connectivity or subscriptions, and the process for safety-related updates.
Beyond the Headlines: A future-ready car isn’t just one that receives wireless updates, but one whose manufacturer clearly states what improvements the updates make, how long support will last, and which issues still require physical service.
Also Read: 5 Things You Must Check Before Buying an Electric Scooter
Raj Prajapati is a Senior Automotive Content Writer at AutoIndiaDaily. A B.Tech graduate in Computer Science and Engineering, he leverages over four years of experience covering Indian car and bike launches, EV tech, and market dynamics to break down complex automotive regulations into simple consumer guides. Specialising in Indian motor vehicle laws, IRDAI updates, and ownership costs, Raj translates technical auto policies into actionable advice for everyday drivers.