How to Mercedes-Benz Upgrade: Step-by-Step Guide

Upgrading your Mercedes-Benz EV is mostly a software process. Over-the-air (OTA) updates unlock features like increased power, rear-axle steering, or enhanced navigation. This guide covers the exact steps, compatibility checks, common failures, and recovery actions.

Quick answer: Open the Mercedes me app, verify your VIN, browse the Store, purchase, and let the car download and install while parked. Most upgrades take 5–30 minutes. If nothing appears, update your MBUX firmware first. Performance upgrades may reduce range slightly; plan accordingly.

Before You Start: What You Need

• Mercedes me account – active and linked to your vehicle. If you just bought the car, allow 24–48 hours for the account sync.
• Stable internet connection – Wi-Fi is strongly recommended. Large upgrades (e.g., a firmware bundle) can exceed 2 GB. Cellular data may be slow or capped.
• Battery SOC above 30% – Mercedes recommends this minimum. A low battery can interrupt the update, potentially corrupting the software.
• Valid subscription or purchase method – some upgrades are one-time purchases; others are monthly or yearly subscriptions. Read the terms before buying.
• VIN number – needed to check eligibility in the app. You’ll find it on the dashboard, driver’s door jamb, or in the car’s settings.

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Step 1 – Verify Vehicle Eligibility

Not every Mercedes EV supports every upgrade. The table below shows typical scenarios:

Model (Example)	Common OTA Upgrades Available	Notes
EQE 350 (2023)	Performance boost (~30 hp)	Requires specific hardware version; check VIN in app
EQS 450+ (2022)	Rear-axle steering, active lane change	Regional restrictions apply (EU vs. US)
EQB 300 (2023)	Navigation features only	No performance OTA currently offered
EQS SUV (2024)	Ambient lighting styles, AMG sound	Some features need a subscription

Action: Open the Mercedes me app → Vehicle → “Available Upgrades.” If nothing appears, go to Settings → System update in the car. Install any pending MBUX firmware updates first. After that, re-check the Store.

Still empty? Your VIN may be in a region where the upgrade is not yet released, or the car lacks the required sensor or module (e.g., a physical steering motor). Contact Mercedes-Benz support with your VIN.

Evidence: According to Mercedes-Benz owner forums, many 2023 EQE 350 owners in the US have reported the performance upgrade appearing only after updating MBUX to version 2023.25 or later.

Step 2 – Connect to the Mercedes me Store

Two ways to browse and purchase:

Method	Location	Best For
Infotainment screen	Apps → Mercedes me Store	In-car browsing while parked; direct view of vehicle status
Mobile app	Store icon	Quick purchase, monitoring, and comparing multiple upgrades

• Use the app to see all upgrades listed for your VIN at once.
• Do not initiate purchase while driving – the car must be in Park.

Step 3 – Choose Your Upgrade

Common upgrade categories for Mercedes EVs:

• Performance – increases power output. Example: EQE 350 from ~288 hp to ~402 hp. Trade-off: range may drop 3–5% under normal driving.
• Comfort – active lane change, ambient lighting styles, seat massage patterns. These do not affect range.
• Navigation – real-time traffic, 3D maps, EV route planner with charge stops. Essential for road trips.
• Sound – AMG Performance Sound (external simulated engine noise). Purely cosmetic.
• Battery – preconditioning schedules, extended degradation reporting. Helps preserve battery health.

Decision rule: If range predictability is your top priority, invest in navigation and battery features first. If you want a sportier feel, look at performance packages – but accept a small range penalty. Test any trial versions if available.

Step 4 – Purchase and Download

1. Select upgrade → tap “Buy” or “Subscribe.”

2. Complete payment (credit card or Mercedes me credits).

3. Vehicle starts downloading over LTE or Wi-Fi.

• Small features (e.g., ambient lighting styles): 5–10 minutes.
• Large firmware bundles (e.g., navigation map update): 30–60 minutes.

4. Installation begins automatically after download – do not turn off the car or open doors mid-install. The system may use the 12V battery; staying in the driver’s seat prevents a sleep cycle.

5. Confirmation appears on screen and in the app.

Failure mode: If download fails partway, check your internet connection. Try restarting the infotainment system (hold the volume knob for 10 seconds). If the purchase still shows “Pending” after 30 minutes, wait 24 hours – server sync may be delayed. After 24 hours, contact Mercedes support.

Common mistake: Walking away while installation is active. If the 12V battery drops or the car goes to sleep, the update can corrupt, requiring a dealer visit. Stay inside until the process ends.

Step 5 – Verify the Upgrade

• Test the feature: e.g., for rear-axle steering, drive slowly in a tight circle – turning radius should shrink noticeably. For performance, a gentle acceleration test shows a new power band (obey speed limits).
• In the app, go to “My Upgrades” – status should read “Installed.”
• If the feature is missing after 24 hours, try a forced reinstall: go to Store in the car → “Library” → tap the upgrade’s “Install” button again. If that fails, a dealer visit may be required.

Verification checklist:

• The feature appears in the car’s settings menu (e.g., under Driving → Steering for rear-axle steering).
• The app shows “Installed” with a timestamp.
• No warning lights or error messages on the dashboard.

Common Mistakes to Avoid

• Assuming all upgrades are one-time purchases. Some are subscriptions; read the terms carefully. The Mercedes me Store clearly labels “Subscription” vs. “Purchase.”
• Installing over cellular. Large updates can eat your data cap. Use Wi-Fi – many Mercedes vehicles support Wi-Fi hotspot or home Wi-Fi connection.
• Skipping MBUX updates. Older software can block Store access. Check for system updates every 3–4 months.
• Forgetting to re-link your account after a factory reset. Re-authorize in the app under Settings → Accounts.
• Ignoring regional restrictions. Performance upgrades may not be legal in some countries. Verify locally before purchasing.
• Assuming all upgrades are reversible. Once installed, digital upgrades are typically non-refundable. Trial versions are your best test.

Frequently Asked Questions

Q: Can I upgrade my Mercedes EV’s battery capacity after purchase?

A: No. Battery capacity is fixed by hardware. Software can only improve efficiency, preconditioning schedules, or degradation reporting.

Q: Do performance upgrades void the warranty?

A: Official Mercedes me store upgrades are factory-backed. Third-party tuning (e.g., chip tuning) will void powertrain coverage.

Q: How do I know if an upgrade is available in my region?

A: Open the Mercedes me app and filter by your vehicle. Regional restrictions are enforced by VIN and local regulations. If the upgrade appears in the app but fails to install, contact support.

Q: Can I refund an upgrade if it doesn’t work?

A: Terms vary by market – most digital upgrades are non-refundable once installed. Trial versions (if offered) let you test first. Check the refund policy in the Store before purchasing.

Q: Does upgrading change my insurance premium?

A: Possibly – performance upgrades that increase horsepower may raise your rate. Check with your insurance provider and local regulations before installing.