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This guide is for general information only. EVcourse is not affiliated with Mercedes-Benz or Fastned. Charging speeds and compatibility vary by station, vehicle variant, and conditions. When in doubt, contact Mercedes-Benz or Fastned support.

Troubleshooting

Mercedes-Benz EQB Charging at Fastned

Updated March 2026

The Mercedes-Benz EQB is compatible with Fastned chargers. Here is what you need to know about charging speed, connector fit, and how to handle common problems.

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Compatibility Overview

Approximate values. Actual speeds depend on temperature, battery state, and station load.

Connector match
Compatible
Car connector
CCS2
Network connectors
CCS2, CHAdeMO
Max charging speed
102 kW
10-80% estimate
35 min
Payment
app, contactless, Plug & Charge

Why Your Charging Speed May Differ

The Mercedes-Benz EQB supports up to 102 kW DC charging. Fastned chargers deliver up to 400 kW. Your car's maximum intake is the limiting factor here, capping speed at 102 kW even on a faster charger.

  • Charging slows down above 80% state of charge on most EVs, including the Mercedes-Benz EQB.
  • Cold weather reduces charging speed. The Mercedes-Benz EQB supports battery preconditioning, which helps.
  • If multiple cars share the same Fastned station, power may be split between stalls.

Mercedes-Benz EQB Charging Problems

Mercedes-Benz EQB Charger Won't Start: Quick Fixes

You have connected your Mercedes-Benz EQB to a public charger, but the session will not start. MBUX shows nothing, the charger sits idle, and you are wondering what is wrong. This is one of the most common complaints at public chargers, and it is usually fixable on the spot.

Symptoms

  • The charger screen stays on 'waiting' or 'connect vehicle' after plugging in
  • MBUX does not show any charging activity
  • The EQB's charge port LED does not illuminate
  • The charger returns an error code after you connect
  • The CCS2 connector does not click into place

What to Do

  1. 1

    Unlock the EQB and open the charge port

    Ensure the car is unlocked. Press the charge port flap to open it. On some EQB models, you can also open it through the Mercedes me app.

  2. 2

    Insert the connector firmly

    Push the CCS2 or Type 2 connector straight into the port until it clicks. The charge port is on the right side of the EQB. A locked connector triggers the charging protocol.

  3. 3

    Authenticate at the charger

    Tap your RFID card on the charger reader, start the session in the network app, or tap your bank card on the contactless terminal. The charger needs authorization before sending power.

  4. 4

    Disable scheduled charging in MBUX

    In MBUX, navigate to EV settings, then charging. If a schedule is set, switch to immediate charging so the EQB does not wait for a timer.

  5. 5

    Disconnect and retry

    Unplug the cable, wait 15 seconds, and reconnect. This forces a fresh handshake between the EQB and the charger.

  6. 6

    Try another charger

    If the charger remains unresponsive, it is likely out of service. Move to a different stall or station and report the faulty unit through the network's app.

Mercedes-Benz EQB Charging Payment Failed: Fix Now

You have connected your Mercedes-Benz EQB to a charger, but the payment will not go through. RFID not recognized, app error, or bank card declined. This is a charger-side issue, not an EQB problem, but it still blocks your session. Here is how to get charging.

Symptoms

  • The charger displays 'authentication failed' or 'payment declined'
  • Your RFID card tap produces no response
  • The charging app returns an error when starting a session
  • Contactless bank card payment is declined
  • The charger asks for payment but no method works

What to Do

  1. 1

    Try an alternative payment method

    Switch from RFID to the charging app, or from the app to a contactless bank card. Having multiple options ensures one failure does not strand you.

  2. 2

    Check your account status

    Open the charging app and verify your payment method, balance, and subscription status. Fix any issues before retrying.

  3. 3

    Verify the charger supports your network

    Look for provider logos on the charger. If yours is not there, you need ad-hoc payment via QR code or a different provider.

  4. 4

    Scan the QR code for ad-hoc payment

    Most European chargers have a QR code that opens a browser-based payment page. Pay with any bank card, no app needed.

  5. 5

    Cancel and restart the session

    If payment seemed to go through but charging did not start, cancel in the app and try again with a fresh authorization.

  6. 6

    Contact the network's support

    The charger should display a phone number. The operator can sometimes authorize sessions remotely or troubleshoot payment issues.

Mercedes-Benz EQB 350+ Charging Slow: How to Fix It

Your Mercedes-Benz EQB 350+ supports up to 102kW DC fast charging, which is moderate for its class. If the MBUX display is showing far less than that, every charging stop takes longer than it should. Here is what affects the EQB's charging speed and how to improve it.

Symptoms

  • DC charging power shown on MBUX is well below 102kW
  • Charging the 70.5kWh battery takes significantly longer than expected
  • Speed drops noticeably above 70% state of charge
  • AC charging is stuck below 11kW at a faster station
  • MBUX displays a battery temperature warning or conditioning indicator

What to Do

  1. 1

    Check charging power in MBUX

    Open the charging status screen on MBUX. It displays current kW, battery temperature, and estimated completion time. This tells you whether the car or charger is limiting speed.

  2. 2

    Precondition the battery before arriving

    Enter the charging station as a destination in MBUX navigation. The EQB will precondition the battery to optimal temperature while you drive. This is the single most effective step in cold weather.

  3. 3

    Find a charger rated at 100kW or more

    Use the Mercedes me app or a charger map to locate high-power stations. Ionity, Fastned, and some Shell Recharge stations offer 100kW+ chargers.

  4. 4

    Avoid power-sharing stalls

    Choose a charger pair where the adjacent stall is empty. This gives the EQB the full output of the charger.

  5. 5

    Charge between 10% and 80%

    Plan stops to arrive between 10% and 15% and leave at 80%. This keeps you in the EQB's fastest charging window.

  6. 6

    Check for software updates

    Mercedes releases over-the-air updates that can improve charging behavior. Check MBUX under Settings for available updates.

Common Fastned Issues

Autocharge not recognizing your vehicle

You have Autocharge set up in the Fastned app, but when you plug in, the charger asks for payment instead of starting automatically.

Symptoms

  • Charger screen prompts for app or card payment after plugging in
  • Screen shows 'Vehicle not recognized' or goes straight to the payment screen
  • Autocharge worked at other Fastned stations but not this one
  • You recently changed your vehicle or payment method in the Fastned app

How to Fix It

  1. 1

    Check Autocharge status in the Fastned app

    Open the Fastned app, go to your account or Autocharge settings, and verify that Autocharge is toggled on and linked to your current vehicle. If you switched vehicles recently, you may need to re-register the new one.

  2. 2

    Unplug, wait 15 seconds, and plug in again

    The Autocharge handshake happens in the first few seconds. If the timing was off or the connector was not fully seated, the charger defaults to manual payment. Try again with a firm, steady plug-in.

  3. 3

    Make sure your payment method is valid

    Autocharge bills your saved payment method automatically. If the card on file has expired or been blocked, Autocharge will fail even though your vehicle is recognized. Update your payment details in the Fastned app.

  4. 4

    Verify your vehicle supports Autocharge

    Autocharge requires the vehicle to transmit a unique identifier through the charging cable (MAC address). Most newer EVs support this, but some older models or specific firmware versions do not. Check Fastned's website for a compatibility list.

  5. 5

    Start the session via the app as a workaround

    If Autocharge is not cooperating, open the Fastned app, select the station and charger, and start the session manually. You will still get your Gold Member or regular pricing.

Contactless card reader not responding

You tap your debit or credit card on the contactless reader, but nothing happens. No beep, no screen change, no error.

Symptoms

  • No response from the reader when tapping a card
  • Reader beeps but the screen shows 'Transaction failed'
  • Card works at shops and other chargers but not at this Fastned station
  • Apple Pay or Google Pay does not trigger the reader

How to Fix It

  1. 1

    Locate the correct reader

    Fastned chargers have the contactless reader built into the charger unit. It is usually a small pad with the contactless symbol near the screen. Make sure you are tapping on the reader, not on the screen itself.

  2. 2

    Hold your card still for 3 to 5 seconds

    Do not tap and remove quickly. Hold the card flat against the reader and wait. Some readers are slower than retail terminals.

  3. 3

    Remove your card from its wallet or phone case

    Other cards, RFID badges, or phone cases with magnets can interfere with the contactless signal. Try the card on its own, directly on the reader.

  4. 4

    Try a different card

    Some card issuers block pre-authorization transactions above a certain threshold. Fastned may pre-authorize 100 EUR or more. If your card's contactless limit is lower, the transaction fails.

  5. 5

    Use the Fastned app instead

    If the contactless reader is faulty, start the session through the Fastned app. You can also use a roaming RFID card from providers like Shell Recharge or Chargemap.

Charger cable too short for your vehicle

The charging cable attached to the Fastned station does not reach your vehicle's charge port. This depends on your vehicle's port position and how you park.

Symptoms

  • Cable reaches the port but is stretched tight with no slack
  • Cable does not reach at all when parked normally
  • You need to reverse in or park at an awkward angle
  • Cable reaches but the connector presses against the car body at a sharp angle

How to Fix It

  1. 1

    Reposition your vehicle

    Try parking closer to the charger or at a different angle. If your charge port is on the front left, back in so the port is closest to the cable. Many Fastned stations are designed for pull-through parking.

  2. 2

    Try the other cable

    Fastned chargers typically have two cables (CCS2 and CHAdeMO, or two CCS2 cables from different sides). The cable on the other side of the charger may reach more easily.

  3. 3

    Try a different charger at the same station

    If the station has multiple charger units, another one may give you a better angle. Charger positions vary slightly across units.

  4. 4

    Do not force a stretched cable

    A cable under tension can damage the connector, your charge port, or the cable itself. If it does not reach comfortably, reposition the car. A damaged connector can shut down the charger for everyone.

Speed throttling when multiple vehicles are charging

Your charging speed drops when other vehicles start charging at the same Fastned station. This is power sharing in action.

Symptoms

  • Charging started at 150 kW and dropped to 80 kW when another car plugged in
  • Speed is lower at a busy station than at the same station when it was empty
  • Dashboard shows the charger is limiting power, not the battery
  • Speed fluctuates as other vehicles arrive and leave

How to Fix It

  1. 1

    Understand how Fastned power sharing works

    Most Fastned stations have a total power budget shared across all active chargers. When more vehicles charge simultaneously, each one gets a smaller share. This is a station design limitation, not a fault.

  2. 2

    Charge during off-peak hours if possible

    Fastned stations along highways are busiest during weekend travel peaks and holiday periods. Early morning or late evening sessions often mean you have the station to yourself and get full speed.

  3. 3

    Choose a station with more capacity

    Newer Fastned stations and recently upgraded locations tend to have larger power budgets. The Fastned app shows the maximum kW per station. Stations rated at 400 kW per charger usually have more headroom than 150 kW stations.

  4. 4

    Do not wait for full speed. Charge what you need and go.

    Even at reduced speed, DC fast charging is much faster than AC. If you are getting 80 kW instead of 150 kW, it takes a few extra minutes, not hours. Charge to 80% and continue your trip.

Busy station with no queue management

You arrive at a Fastned station and all chargers are occupied. There is no official way to join a queue or reserve a spot.

Symptoms

  • All chargers are in use and multiple cars are waiting
  • No clear queue order. Confusion about who arrived first.
  • App does not show how many vehicles are waiting
  • You are not sure if you should wait or drive to another station

How to Fix It

  1. 1

    Check the Fastned app for nearby alternatives

    Before committing to a wait, check if there is another Fastned station or competitor fast charger within 10 to 15 minutes. Waiting 20 minutes for a spot is often slower than driving to a nearby empty station.

  2. 2

    Communicate with other waiting drivers

    Fastned does not have a formal queue system. If you decide to wait, make yourself visible by parking near the charger area and, if comfortable, let other waiting drivers know you are in line. Brief eye contact and a nod go a long way.

  3. 3

    Watch for vehicles at high state of charge

    If a vehicle on the charger is already above 80%, it will likely leave soon. Drivers charging from 80 to 100% at a DC fast charger are rare. Most will unplug and leave within minutes.

  4. 4

    Plan stops to avoid peak times

    Holiday weekends, Friday afternoons, and Sunday evenings are the busiest. If your schedule is flexible, adjusting departure time by an hour or two can make a significant difference in charger availability.

  5. 5

    Send feedback to Fastned

    Fastned expands stations based on utilization data. If a station is consistently full, reporting it through the app helps Fastned prioritize adding more chargers at that location.

Fastned App Tips

  • Set up Autocharge in the Fastned app before your first visit. When it works, you just plug in and walk away. No tapping, no scanning.
  • The Fastned app shows real-time availability per station. Green dots mean available, red means occupied. Check before you drive there.
  • If you are a Fastned Gold Member, make sure you are logged in when starting a session through the app. Otherwise you will be charged the standard rate.
  • Fastned stations show live pricing in the app. Gold Member pricing and standard pricing are displayed separately so you know exactly what you will pay.
  • Use the Fastned app to track your charging history. Every session shows energy delivered, peak speed, session duration, and total cost.
  • The app lets you report charger issues directly. If a cable is damaged or a charger is not working, reporting it helps Fastned send maintenance faster.

Payment Tips

  • Fastned offers a Gold Member subscription that gives you a lower per-kWh rate at every Fastned station. Check the Fastned app for current pricing in your country. If you charge at Fastned more than two or three times a month, it usually pays for itself.
  • Contactless payment is available at all Fastned stations. Pre-authorization holds are typically around 100 EUR and release within a few business days.
  • You can also charge at Fastned using a roaming RFID card (Shell Recharge, Chargemap, NewMotion, and others). But roaming rates are usually higher than Fastned's direct pricing.
  • Fastned Gold Member pricing applies to Autocharge and app-initiated sessions. If you pay with a contactless card at the charger, you get the standard (non-member) rate.
  • Fastned may charge idle or overstay fees at some locations. Check the Fastned app or tariff page for current policies. Unplugging promptly when your session is complete is both courteous and avoids potential extra charges.

Frequently Asked Questions

Can the Mercedes-Benz EQB charge at Fastned?
Yes. The Mercedes-Benz EQB uses a CCS2 connector, which is supported by Fastned chargers. Maximum charging speed will be up to 102 kW.
How long does it take to charge a Mercedes-Benz EQB at Fastned?
Charging a Mercedes-Benz EQB from 10% to 80% at Fastned takes approximately 35 minutes at up to 102 kW. Actual times vary depending on temperature, battery condition, and station load.
How do you pay at Fastned?
Fastned accepts app, contactless, Plug & Charge. Check the Fastned app or website for current pricing and subscription options.

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