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

Troubleshooting

Mercedes-Benz EQS Charging at Iberdrola

Updated March 2026

The Mercedes-Benz EQS is compatible with Iberdrola 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
Max charging speed
200 kW
10-80% estimate
33 min
Payment
app, contactless

Why Your Charging Speed May Differ

The Mercedes-Benz EQS supports up to 200 kW DC charging. Iberdrola chargers deliver up to 350 kW. Your car's maximum intake is the limiting factor here, capping speed at 200 kW even on a faster charger.

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

Mercedes-Benz EQS Charging Problems

Mercedes-Benz EQS Charger Won't Start a Session

You connected the CCS2 cable to your EQS's right rear charge port, but the Hyperscreen shows no charging activity. No power flowing, no progress. This is frustrating, especially in a flagship sedan where everything should just work. The cause is usually authentication, cable seating, or the charger itself, not the EQS.

Symptoms

  • CCS2 connector plugged in but the Hyperscreen shows no charging activity
  • Charger screen displays an error or stays idle after authentication attempt
  • Plug & Charge does not authenticate automatically at a supported station
  • Charge port LED does not illuminate or blinks an error pattern
  • Mercedes me app shows the EQS as connected but not charging

What to Do

  1. 1

    Remove and firmly reseat the CCS2 connector

    Pull the connector out of the right rear charge port. Check for debris or moisture. Push it back in straight and firm until you hear a click and see the charge port LED respond. The CCS2 connector is heavy, so support it with both hands to ensure proper alignment.

  2. 2

    Authenticate manually if Plug & Charge failed

    Open the charging network's app and start the session by scanning the QR code or selecting the charger. If you have an RFID card for this network, tap it on the reader. Do not wait for Plug & Charge if it did not work within 30 seconds.

  3. 3

    Disable scheduled charging in MBUX

    On the Hyperscreen, open Settings, then Charging. Turn off any departure time or scheduled charging window. At a public charger, you want charging to start immediately. Re-enable scheduled charging when you are back at your home wallbox.

  4. 4

    Lock and unlock the EQS to reset the charge controller

    Use the key or Mercedes me app to lock the car. Wait 15 seconds, then unlock. This resets the charge port locking mechanism and the onboard charging communication module. Reconnect the cable after unlocking.

  5. 5

    Try a different connector or charger at the station

    If the station has multiple CCS2 connectors, try a different one. If the entire station seems unresponsive, use MBUX navigation to find another nearby charger. Report the faulty charger through the network's app.

Mercedes-Benz EQS Payment Failed at Charging Station

You are standing next to your EQS at a public charger and payment will not go through. Plug & Charge did not activate, the app shows an error, or your card was declined. Payment failures are one of the most common reasons charging sessions do not start. With the EQS, you have multiple authentication options to try before giving up.

Symptoms

  • Plug & Charge does not authenticate when the CCS2 cable is connected
  • Contactless card declined at the charger's payment terminal
  • Mercedes me Charge or the network's app shows a payment error
  • RFID card not recognized by the charger reader
  • Session starts but stops immediately with a billing-related error

What to Do

  1. 1

    Try Plug & Charge by connecting the cable

    Plug the CCS2 connector into the EQS's right rear charge port. Wait up to 30 seconds for Plug & Charge to authenticate. Check the Hyperscreen for a charging confirmation. If nothing happens after 30 seconds, Plug & Charge is not working at this station.

  2. 2

    Use the charging network's app to start the session

    Open the app for the charging network shown on the charger. Scan the QR code or enter the charger ID. Start the session through the app. Verify your payment method in the app is valid and not expired.

  3. 3

    Try contactless payment at the charger terminal

    If the charger has a contactless payment terminal, tap your bank card, Apple Pay, or Google Pay. If the first card is declined, try a different one. Some terminals accept only certain card brands.

  4. 4

    Verify your Mercedes me Charge account

    Open the Mercedes me app. Go to Charge settings and check that Plug & Charge is enabled and your payment method is current. If you recently changed your payment method, it may need time to sync. Try restarting the Mercedes me app.

  5. 5

    Try a different RFID card or roaming provider

    If you carry multiple RFID cards, try another network. Roaming providers with broad European coverage (Chargemap, Maingau, Shell Recharge) can fill gaps where Mercedes me Charge does not reach.

  6. 6

    Find an alternative charger nearby

    If payment fails on this charger entirely, use the Hyperscreen to find another station nearby. A different charging network may accept your payment method. Filter by the networks you know work with your cards.

Mercedes-Benz EQS Charging Slower Than Expected

You plugged in your EQS at a 300 kW charger expecting close to 200 kW, but the Hyperscreen shows 50 kW. Or your home wallbox is stuck at 3.6 kW instead of 11 kW (or 22 kW if you have the optional upgrade). The EQS has a huge 118 kWh battery that can take a while to warm up. Slow charging is almost always temperature, state of charge, or the charger, not a defect.

Symptoms

  • DC fast charging speed well below the 200 kW maximum shown on the Hyperscreen
  • AC charging stuck at 3-4 kW instead of 11 kW or 22 kW
  • Charging speed drops sharply after reaching 50-60% state of charge
  • Charging session starts at reasonable speed but slows within minutes
  • The 118 kWh battery takes significantly longer to charge than expected

What to Do

  1. 1

    Route to the charger using MBUX navigation

    Enter the charging station as your destination on the Hyperscreen or MBUX. This activates automatic battery preconditioning for the 118 kWh pack. The EQS will display a preconditioning notification. Given the large battery, start routing at least 20-30 minutes before arrival for maximum benefit in cold weather.

  2. 2

    Check your state of charge before expecting peak speed

    The EQS reaches 200 kW only at lower state of charge levels. For the fastest DC charging, arrive between 10-20%. If you are above 60%, the speed reduction is normal. With 580 km of range, you often do not need to charge above 80% on road trips.

  3. 3

    Verify the charger can deliver the speed you expect

    Check the charger's rated output on the unit itself or in the charging app. A 50 kW charger will never give your EQS more than 50 kW. Look for chargers rated 150 kW or higher to take advantage of the EQS's capabilities. Avoid stalls paired with another vehicle.

  4. 4

    Check AC charging settings and wallbox compatibility

    Open the charging settings in MBUX. Confirm the charge current is set to maximum. If you have the optional 22 kW onboard charger, verify your wallbox is 3-phase 32A. For the standard 11 kW charger, you need at least 3-phase 16A.

  5. 5

    Check if Plug & Charge negotiated the correct power

    The EQS supports Plug & Charge. Occasionally, authentication issues cause the charger to default to a lower power tier. Unplug from the right rear charge port, wait 30 seconds, and reconnect. Check MBUX for any authentication errors.

  6. 6

    Try a different charger

    If the speed is still low after checking all settings, try a different charger. Some chargers degrade over time. Use MBUX navigation or the Mercedes me app to find a high-power charger (150 kW+) nearby.

Common Iberdrola Issues

App defaults to Spanish

The Iberdrola app opens in Spanish regardless of your phone's language setting. Finding the language switch can be confusing if you do not read Spanish.

Symptoms

  • All app text is in Spanish after installation
  • Language setting is not obvious in the menus
  • Error messages and charger instructions appear only in Spanish
  • Switching your phone's language does not change the app

How to Fix It

  1. 1

    Open the app settings and look for 'Idioma'

    'Idioma' means 'Language' in Spanish. It is usually under the profile or settings menu (gear icon). Tap it and select English or your preferred language.

  2. 2

    Check the profile or account section

    Some versions of the Iberdrola app place the language selector inside the user profile rather than in general settings. Look for your name or account icon at the top of the screen.

  3. 3

    Update the app to the latest version

    Iberdrola has been improving multi-language support. Older versions may not have your language available. Update from the App Store or Google Play.

  4. 4

    Use a roaming app as a backup

    If the language barrier is too frustrating, roaming apps like Chargemap, Shell Recharge, or Electropass work at many Iberdrola stations and offer broader language support.

Contactless payment session timeout

After tapping your card on an Iberdrola charger, there is a short window to plug in the cable and start charging. If you take too long, the session times out and you need to tap again.

Symptoms

  • You tapped your card but by the time you connected the cable, nothing happened
  • Charger screen shows 'Session expired' or returns to the start screen
  • You were charged a pre-authorization but no energy was delivered
  • The charger seemed ready but then went back to idle

How to Fix It

  1. 1

    Plug in the cable first, then tap your card

    At Iberdrola stations, connect the cable to your vehicle before tapping your contactless card. This gives the charger the best chance to start immediately after authentication.

  2. 2

    Tap your card again and act quickly

    After the tap, you typically have 60 to 90 seconds to complete the connection. If you missed the window, tap again. The pre-authorization from the first attempt will be released.

  3. 3

    Use the Iberdrola app instead

    The app does not have the same time pressure. You can connect the cable, open the app, select the charger, and start at your own pace.

  4. 4

    Check your bank statement for ghost charges

    Failed contactless attempts may show a pre-authorization hold. These are not actual charges and typically release within 3 to 7 business days. Contact your bank if they persist.

Confusing signage at gas station locations

Some Iberdrola chargers are located at gas stations (Repsol, Cepsa, or others). The EV charging area may not be clearly separated from the fuel pumps, and signage can be confusing.

Symptoms

  • You cannot find the EV chargers at the gas station
  • GPS directs you to the fuel pumps instead of the charging area
  • Signage points to 'carga' or 'recarga' but the direction is unclear
  • The charging spots are behind the gas station building or in an overflow lot

How to Fix It

  1. 1

    Look for the charging area separate from the fuel pumps

    EV chargers at gas stations are almost always in a dedicated area away from the fuel pumps. Look for tall charger cabinets (about 2 meters high) rather than fuel dispensers.

  2. 2

    Drive past the fuel pump area

    The charging area is often behind the main building, in a side lot, or at the far end of the property. Drive through the station slowly and look for the Iberdrola or charging network signage.

  3. 3

    Ask the gas station attendant

    If the station has staff, ask where the electric charging points are. In Spanish, 'Donde estan los cargadores electricos?' gets the point across.

  4. 4

    Check the Iberdrola app for station photos

    The station detail page in the Iberdrola app sometimes includes photos or access instructions that help you find the chargers within a larger gas station complex.

Mix of slow and fast chargers at the same station

Some Iberdrola stations have both AC chargers (7 to 22 kW) and DC fast chargers (50 to 350 kW) next to each other. It is easy to plug into a slow charger by mistake if you are not paying attention.

Symptoms

  • You expected fast charging but your dashboard shows only 7 or 22 kW
  • The charger you plugged into looks smaller than the others at the station
  • You used a Type 2 cable instead of a CCS2 connector
  • The charging session is going to take hours instead of minutes

How to Fix It

  1. 1

    Check the charger label for power output

    Iberdrola chargers display their rated power (e.g., 50 kW, 150 kW, 350 kW) on the unit. Look for this label before plugging in. AC chargers (7 to 22 kW) are typically smaller and have Type 2 sockets.

  2. 2

    Use the CCS2 connector for fast charging

    The CCS2 connector is the large combined plug for DC fast charging. If you used the smaller Type 2 plug (round with pins), you are on AC and will charge slowly.

  3. 3

    Check the Iberdrola app for charger details

    The app shows each charger unit's power level at a station. Before plugging in, confirm which unit is the high-power DC charger.

  4. 4

    Unplug and move to the fast charger

    If you accidentally started an AC session, stop the session in the app, unplug, and move to the DC fast charger. You will not be charged a penalty for a short session.

Power delivery varies by time of day

Some Iberdrola stations deliver noticeably less power during peak grid hours (typically early evening). This is due to grid constraints, not a charger fault.

Symptoms

  • Charging speed is significantly lower in the evening than the same station delivered in the morning
  • Speed starts high but drops during peak hours even at low battery levels
  • Other vehicles at the station also show reduced speeds at the same time
  • The charger does not reach its rated power despite your vehicle supporting it

How to Fix It

  1. 1

    Check your battery level first

    The most common reason for reduced charging speed is a battery above 60 to 80% state of charge. Your vehicle limits the charging rate at higher battery levels regardless of the charger's capability.

  2. 2

    Try charging during off-peak hours

    If your schedule allows, charge during late evening (after 10 PM) or early morning. Grid demand is lower and the station can deliver its full rated power.

  3. 3

    Check for power sharing between chargers

    If multiple chargers are in use at the same station, they may share a grid connection. Charging when fewer vehicles are plugged in can improve your speed.

  4. 4

    Try a different station nearby

    Not all Iberdrola stations have the same grid connection. A station a few kilometers away may have a better power supply and deliver higher speeds during peak hours.

  5. 5

    Accept the reduced speed if you are above 60%

    If your battery is above 60%, the speed reduction is mostly from your vehicle's battery management, not the grid. This is normal and protects your battery's long-term health.

Iberdrola App Tips

  • Download the Iberdrola app before traveling to Spain or Portugal. Change the language to English in the app settings (look for 'Idioma' under profile or settings).
  • Use the Iberdrola app's map to distinguish between AC (slow) and DC (fast) chargers at each station. The app labels each unit's power level.
  • Enable session notifications so you know immediately when charging finishes or stops. This is especially useful at gas station locations where you might be inside the shop.
  • Check the Iberdrola app for real-time availability before driving to a station. Stations at popular highway rest stops can fill up during holiday travel periods.

Payment Tips

  • Contactless card payment works at most Iberdrola fast chargers. Plug in the cable first, then tap your card. You have about 60 to 90 seconds to complete the connection after tapping.
  • The Iberdrola app has no time pressure for starting a session. If contactless payment keeps timing out, use the app instead.
  • Pre-authorization holds for contactless payment can be up to 80 EUR. The actual charge appears later and the hold is released within a few days.
  • Check per-kWh pricing in the Iberdrola app before starting. Rates vary by charger power level and location.

Frequently Asked Questions

Can the Mercedes-Benz EQS charge at Iberdrola?
Yes. The Mercedes-Benz EQS uses a CCS2 connector, which is supported by Iberdrola chargers. Maximum charging speed will be up to 200 kW.
How long does it take to charge a Mercedes-Benz EQS at Iberdrola?
Charging a Mercedes-Benz EQS from 10% to 80% at Iberdrola takes approximately 33 minutes at up to 200 kW. Actual times vary depending on temperature, battery condition, and station load.
How do you pay at Iberdrola?
Iberdrola accepts app, contactless. Check the Iberdrola app or website for current pricing and subscription options.

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