Have you been wondering about getting your Tesla ready for the next level of autonomous driving? The leap from Hardware 3 (HW3) to Hardware 4 (HW4) is a significant one, promising enhanced capabilities and a smoother FSD experience. While a direct, easy swap isn't always the case, Tesla has made commitments to those who've invested in Full Self-Driving (FSD). Let's dive into the details of what this upgrade entails and how you can navigate the process.
The Evolution of Tesla Hardware: HW3 vs. HW4
Before we get into the upgrade process, it's crucial to understand what exactly changed between HW3 and HW4. This isn't just a minor tweak; it's a fundamental improvement in the vehicle's "brain" and its "eyes."
Key Enhancements in HW4:
Camera Technology: HW4 boasts a substantial upgrade to 5-megapixel cameras, a significant leap from HW3's 1.2-megapixel units. This translates to sharper, more detailed imagery, crucial for object detection and navigation. Additionally, HW4 cameras feature red-tinted lenses for improved low-light performance and a wider field of view with a streamlined two-camera setup.
Computing Power: The FSD computer in HW4 is 3-5 times faster than its HW3 predecessor, enabling more complex and rapid autonomous driving computations. This upgrade is powered by AMD Ryzen APUs, making HW4 a true powerhouse.
Electrical System: HW4 requires higher power consumption (about twice as much at idle) and operates at a 16V system, up from HW3's 12V. These changes are vital for handling the increased processing demands.
The HW3 to HW4 Upgrade Journey: A Step-by-Step Guide
While Tesla aims to make this transition as smooth as possible for eligible owners, it's important to understand the nuances.
Step 1: Confirm Your Eligibility and Current Hardware
The first, and arguably most important, step is to determine if your Tesla is eligible for the HW4 upgrade.
FSD Package Ownership: Elon Musk has confirmed that Tesla will upgrade HW3 computers for customers who have purchased the Full Self-Driving (FSD) package. If you are a monthly FSD subscriber, you will likely not be eligible for a complimentary upgrade and may need to pay a fee.
Check Your Hardware Version: You can easily check your current Autopilot computer type directly from your vehicle's touchscreen. Navigate to 'Controls' > 'Software' > 'Additional Vehicle Information'. This will display your Autopilot computer version (e.g., Hardware 3.0).
Step 2: Understand the Upgrade Nature – It's Not a Simple Swap
It's crucial to manage your expectations regarding the upgrade. The HW4 hardware, as found in newer Tesla vehicles, has different physical dimensions, power, cooling, and connector configurations. This means it's not a direct, plug-and-play retrofit.
Tesla's Custom Solution: Tesla will likely have to develop a custom-designed retrofit FSD computer specifically for HW3 replacements. This new computer must fit within the existing physical space and operate within the power and cooling constraints of older vehicles. This means it might not be identical to the HW4 found in newly manufactured vehicles.
Potential for Camera Changes: While the primary upgrade is the FSD computer, some sources suggest that camera replacements might also be part of the upgrade for certain early production vehicles to fully leverage HW4's capabilities.
Step 3: Anticipate the Timeline and Availability
While Tesla has committed to the upgrade, the exact timeline can be fluid.
No Firm Dates (Yet): As of now, there isn't a universally firm timeline for when all eligible HW3 vehicles will receive the HW4 upgrade. It's a complex undertaking for Tesla.
Monitor Tesla Communications: Stay informed by regularly checking your Tesla app and vehicle software updates. Tesla will typically notify eligible owners when the upgrade becomes available for their specific vehicle.
Service Center Scheduling: Once eligible, you will likely schedule the installation through the Tesla app by going to 'Schedule Service' > 'Accessories' > 'Upgrades & Accessories' > 'Full Self-Driving computer'.
Step 4: Consider the Cost (If Applicable)
For those who purchased the FSD package outright, the HW3 to HW4 upgrade is expected to be complimentary. However, if you are not an FSD package owner or fall into certain edge cases (e.g., subscribing to FSD), there might be a cost involved.
Current Reported Costs: Some owners have reported seeing upgrade options in their Tesla app for around $1,500 (including installation) for HW3 vehicles, with an additional $500 if they have an older Autopilot Computer 2.0 or 2.5.
Clarify with Tesla Service: To confirm the exact cost (or lack thereof) for your specific vehicle and FSD ownership status, it's always best to contact Tesla Service directly.
Step 5: Post-Upgrade Expectations and Performance
Once the upgrade is complete, you should expect an improved FSD experience.
Smoother Driving: Owners with HW4 vehicles generally report a smoother and more human-like driving behavior compared to HW3.
Enhanced Features: While FSD software updates are rolled out to both HW3 and HW4, the HW4 hardware is designed to better handle the increasingly complex and data-intensive nature of the latest FSD releases. You might notice improvements in object detection, lane keeping, and overall responsiveness.
Software Updates: Your vehicle will continue to receive software updates, and with HW4, it will be better equipped to handle future FSD advancements.
Frequently Asked Questions (FAQs)
How to check if my Tesla has HW3 or HW4?
You can check your hardware version by going to 'Controls' > 'Software' > 'Additional Vehicle Information' on your Tesla's touchscreen.
How to know if I am eligible for a free HW4 upgrade?
Generally, if you purchased the Full Self-Driving (FSD) package with your vehicle, you are eligible for a complimentary HW4 upgrade. FSD subscribers typically are not.
How to schedule a HW4 upgrade appointment?
If eligible, you can schedule an appointment through the Tesla app by navigating to 'Schedule Service' > 'Accessories' > 'Upgrades & Accessories' > 'Full Self-Driving computer'.
How to understand the cost of the HW4 upgrade?
For FSD package owners, the upgrade is expected to be free. For others, reports suggest a cost of around $1,500, potentially more for older hardware versions (HW2.0/2.5).
How to compare HW3 and HW4 camera quality?
HW4 features significantly higher resolution (5-megapixel vs. 1.2-megapixel), improved low-light performance, and a wider field of view.
How to identify performance differences between HW3 and HW4 FSD?
HW4 offers a faster computing platform, leading to smoother and more responsive FSD performance, especially with the latest software iterations.
How to know when my HW4 upgrade will be available?
There isn't a fixed global timeline, but Tesla will notify eligible owners through the Tesla app when the upgrade is ready for their vehicle.
How to prepare my Tesla for the HW4 upgrade service appointment?
Ensure your vehicle's software is up to date and remove any personal belongings from the areas where the service technicians will be working (e.g., trunk, frunk, passenger footwell).
How to tell if a used Tesla has HW4?
Check the vehicle's software information on the touchscreen or inquire with the seller for the specific hardware version. Newer models (generally built from early 2023 onwards) typically come with HW4.
How to get the most out of HW4 once upgraded?
Ensure your software is always up to date, calibrate your cameras as instructed by the vehicle if needed, and practice using the FSD features to familiarize yourself with the improved capabilities.
For more insights into Tesla's hardware and its impact on FSD, check out this video:
