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

Troubleshooting

Volvo EX30 Charging at Mer

Updated March 2026

The Volvo EX30 is compatible with Mer 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
158 kW
10-80% estimate
28 min
Payment
app, RFID, contactless

Why Your Charging Speed May Differ

The Volvo EX30 supports up to 158 kW DC charging. Mer chargers deliver up to 300 kW. Your car's maximum intake is the limiting factor here, capping speed at 158 kW even on a faster charger.

  • Charging slows down above 80% state of charge on most EVs, including the Volvo EX30.
  • Cold weather reduces charging speed. The Volvo EX30 supports battery preconditioning, which helps.
  • If multiple cars share the same Mer station, power may be split between stalls.

Volvo EX30 Charging Problems

Volvo EX30 Charger Won't Start a Charging Session

You connected the cable to your EX30's left rear charge port, but nothing happens. The center screen does not show any charging activity. This is common at public chargers and almost always comes down to authentication, cable connection, or the charger itself. The EX30 is rarely the problem.

Symptoms

  • CCS2 connector plugged in but the center screen shows no charging activity
  • Charger screen shows an error code or stays on the welcome screen
  • Plug & Charge does not authenticate automatically
  • Charge port LED does not turn on or flashes an error color
  • Volvo Cars app shows the car as connected but not charging

What to Do

  1. 1

    Remove and reseat the CCS2 connector

    Pull the connector out of the left rear charge port. Inspect it and the port for debris or damage. Push the connector back in firmly and straight until you hear a click. The charge port LED should respond when the cable locks in place.

  2. 2

    Authenticate manually if Plug & Charge did not work

    Open the charging network's app on your phone and start the session from there. Or tap your RFID card on the charger's reader. The EX30 supports Plug & Charge at compatible stations, but many networks still require app or card authentication.

  3. 3

    Disable scheduled charging

    Check the charging settings on the center screen (Android Automotive OS). If a charging schedule is active, turn it off. At public chargers, you want charging to begin immediately. The Volvo Cars app also lets you manage schedules remotely.

  4. 4

    Lock and unlock the EX30 to reset

    Use the Volvo Cars app or your key to lock the car. Wait 10-15 seconds, then unlock. This resets the charge port locking mechanism and the onboard charging controller. Reconnect the cable after unlocking.

  5. 5

    Try a different connector or charger

    If the station has multiple CCS2 connectors, try another one. If the entire station is unresponsive, move to a different charger. Use Google Maps on the center screen to find the nearest alternative. Report the faulty charger through the network's app.

Volvo EX30 Payment Failed at a Charging Station

You are at a public charger with your EX30 and payment will not go through. Your card was declined, the app shows an error, or Plug & Charge is not working. Payment problems are among the most common reasons a charging session fails to start. You have several options to try before moving to a different station.

Symptoms

  • Plug & Charge does not authenticate when the cable is connected
  • Contactless bank card declined at the charger's payment terminal
  • Charging network app shows a payment error or balance issue
  • RFID card not recognized by the charger
  • Session starts but stops immediately with a billing error message

What to Do

  1. 1

    Try Plug & Charge first

    Connect the CCS2 cable to the EX30's left rear charge port. Wait up to 30 seconds for Plug & Charge to authenticate. Check the center screen for confirmation. If nothing happens, Plug & Charge is either not active on your account or not supported at this station.

  2. 2

    Start the session through the network's app

    Open the charging network's app on your phone. Scan the QR code on the charger or search for the station ID. Start the session through the app. Make sure the payment method saved in the app is valid and not expired.

  3. 3

    Try contactless payment at the terminal

    If the charger has a contactless payment terminal, tap your bank card, Apple Pay, or Google Pay. If your first card is declined, try a different one. Not all terminals accept all card brands, so a backup card can help.

  4. 4

    Check Plug & Charge settings in the Volvo Cars app

    Open the Volvo Cars app and verify that Plug & Charge is enabled with a current payment method. If you recently changed your payment details, the update may take time to reach the car. Try restarting the app and checking again.

  5. 5

    Try a different RFID card

    If you carry multiple RFID cards from different networks, try another one. Broad roaming providers like Chargemap, Shell Recharge, or Plugsurfing cover many networks across Europe. Having two cards from different providers is a reliable backup strategy.

  6. 6

    Find another charger on a different network

    If nothing works at this station, use Google Maps on the EX30's center screen to find a charger on a different network nearby. A different operator may accept your payment method. Filter by connector type (CCS2) to make sure it is compatible.

Volvo EX30 Charging Slower Than Expected at DC or AC

You plugged in your EX30 at a fast charger expecting close to 153 kW, but the center screen shows 40 kW. Or home charging is stuck at 3.6 kW instead of 11 kW. The EX30 has a solid charging curve for its size, but slow speeds are almost always caused by battery temperature, state of charge, or the charger itself. Not a defect.

Symptoms

  • DC fast charging speed well below the 153 kW maximum shown on the center screen
  • AC home charging stuck at 3-4 kW instead of the full 11 kW
  • Charging speed drops sharply after reaching 60-70% state of charge
  • Session starts at decent speed but slows down within minutes
  • Center screen shows significantly lower power than the charger's rated output

What to Do

  1. 1

    Route to the charger using Google Maps on the center screen

    Use the built-in Google Maps to navigate to the charging station. This activates battery preconditioning, which heats or cools the 65 kWh battery before arrival. You will see a notification confirming preconditioning is active. Start routing at least 15-20 minutes before arrival for best results.

  2. 2

    Check your state of charge

    Look at the battery percentage on the EX30's center screen. If you are above 70%, the slower speed is expected. For peak DC speed, arrive between 10-20%. With 365 km real-world range, you can plan stops that keep you in the fast-charging zone.

  3. 3

    Verify the charger is not sharing power

    Check if another car is charging on the paired stall. Many dual-connector chargers split their rated power between both stalls. If possible, choose an unoccupied charger or a single-connector unit.

  4. 4

    Check AC charging settings in the Volvo Cars app

    Open the Volvo Cars app and check the charging settings. Make sure no charge current limit is set and that any scheduled charging is disabled at public chargers. A reduced amperage setting is a common cause of slow home AC charging.

  5. 5

    Wait for the battery to warm up if it is cold

    If you drove a short distance to the charger without using navigation, the battery may be cold. Stay plugged in. The EX30 will gradually warm the battery and speed will increase over the first 10-15 minutes. Next time, route through Google Maps to precondition.

  6. 6

    Try a different charger

    If the speed is still low after checking everything, try a different charger. Some units degrade over time and cannot deliver their rated power. Use Google Maps on the center screen or the Volvo Cars app to find a high-power CCS2 charger nearby.

Common Mer Issues

Station occupancy not updating in the app

The Mer app shows a station as available, but when you arrive, all connectors are occupied or out of service. The real-time status in the app can lag behind by several minutes.

Symptoms

  • App shows "Available" but all connectors are in use when you arrive
  • App shows a station as occupied but the chargers are visibly free
  • Connector status flickers between available and occupied in the app
  • Recently freed connectors still show as "In use" in the app for several minutes

How to Fix It

  1. 1

    Pull to refresh the station detail in the Mer app

    On the station page, pull down to force a status refresh. The app does not always update automatically, and a manual refresh often shows the correct status.

  2. 2

    Close and reopen the app

    Force-close the Mer app and reopen it. This clears any cached station data and pulls a fresh status from the server.

  3. 3

    Check a third-party app for a second opinion

    Apps like Plugsurfing, A Better Route Planner, or Google Maps sometimes pull fresher data from Mer's backend. Use one of these to verify availability if the Mer app seems wrong.

  4. 4

    Drive to the station if it is nearby

    If the station is less than five minutes away, it is often faster to just go and check. Occupancy can change in the time it takes to troubleshoot the app.

Third-party RFID card rejected

You are trying to authenticate with an RFID card from a roaming provider like Plugsurfing, NewMotion, or Virta, but the Mer charger rejects it. Not all third-party RFID cards are accepted at every Mer station.

Symptoms

  • Charger screen shows "Card not recognized" after tapping
  • The charger beeps once but nothing happens
  • Your RFID card works at other networks but fails at Mer
  • The charger prompts you to try again but repeated taps do not help

How to Fix It

  1. 1

    Hold the card flat against the reader for three full seconds

    Do not tap and remove quickly. Some Mer readers need a longer hold to register the card. Keep it pressed flat against the RFID symbol.

  2. 2

    Check if your roaming provider covers Mer stations

    Open your roaming provider's app and search for this specific Mer station. Some providers have roaming agreements with Mer but not for every station type or region.

  3. 3

    Use the Mer app instead

    Download the Mer app if you do not have it. Create an account and add a payment method. You can start the session through the app even if your RFID card does not work.

  4. 4

    Try contactless bank card payment

    Newer Mer stations have a contactless payment terminal. Look for a card reader with the contactless payment symbol. Tap your bank card or phone to start.

  5. 5

    Try a Mer-issued RFID card for future visits

    You can order an RFID card directly from Mer through their app or website. Mer's own cards are accepted at all Mer stations without roaming issues.

Charger screen showing error but no error code

The charger screen displays a generic error message like "Error" or "Fault" without any specific code or explanation. This makes it hard to know if the problem is temporary or if the unit is broken.

Symptoms

  • Charger screen shows "Error" or a red warning icon with no further detail
  • The error appears before you even try to authenticate
  • The error appears after plugging in but before power delivery starts
  • Screen alternates between the normal start screen and the error message

How to Fix It

  1. 1

    Unplug the connector and wait 30 seconds

    Some Mer chargers show transient errors after a previous session ended abnormally. Unplugging and waiting gives the charger time to reset its internal state.

  2. 2

    Try the other connector on the same unit

    If the station has a second CCS2 connector, try that one. A hardware fault on one connector does not always affect the other.

  3. 3

    Check if other cars are successfully charging at the station

    If nobody at the station is charging, the entire station may be down. If others are charging fine, the issue is limited to your connector.

  4. 4

    Report the faulty unit in the Mer app

    Open the Mer app, find the station, and report the issue. Include which connector number has the error. This helps Mer send a technician and warns other drivers.

  5. 5

    Move to a different station

    A charger with a persistent generic error is unlikely to start working on its own. Use the Mer app to find the nearest alternative station.

Cable locked and will not release in cold weather

You finished charging but the CCS2 cable will not unlock from your car. In Nordic winters, ice can form around the connector locking mechanism, making it physically difficult to release.

Symptoms

  • Pressing the connector release button does not unlock the cable
  • The connector feels frozen in place
  • Your car shows "Charging complete" but the cable is stuck
  • The locking pin on the connector is visibly iced over

How to Fix It

  1. 1

    Make sure the charging session has fully ended

    The cable stays locked while a session is active. Stop the session in the Mer app or on the charger screen, then try releasing the connector again. Wait 10 seconds after the session ends.

  2. 2

    Try unlocking from your car

    Most EVs have a cable release option in the infotainment system or a button near the charge port. Use your car's unlock function rather than the connector button.

  3. 3

    Warm the connector gently

    If ice is the problem, pour lukewarm water (not boiling) over the connector and charge port area. You can also cup your hands around the connector to warm it with body heat. Do not use force or tools to pry it free.

  4. 4

    Run the car's cabin heater for a few minutes

    Turning on the car's climate system can gradually warm the charge port area from the inside. This works slowly but can free a mildly frozen connector after 5-10 minutes.

  5. 5

    Call Mer support if the cable is truly stuck

    If nothing works after 15 minutes, call the support number on the charger. Mer can remotely release the cable lock on their end. Do not pull with excessive force as this can damage both the connector and your car's charge port.

App requires location services for remote start

The Mer app asks you to enable location services before you can start a charging session, even when you are standing right next to the charger and selected it manually from the map.

Symptoms

  • App shows "Enable location services to start charging" popup
  • Start button is grayed out until location permission is granted
  • The app worked fine before but now demands location after an update
  • You can browse the map but cannot start a session without GPS enabled

How to Fix It

  1. 1

    Enable location services temporarily

    Go to your phone's settings, find the Mer app, and set location access to "While Using the App." You can change it back after your session.

  2. 2

    Make sure GPS has a fix

    In underground parking garages or areas with poor GPS reception, the app may not be able to confirm your location. Step outside or move closer to an open area until the app detects your position.

  3. 3

    Use RFID or contactless payment instead

    If you do not want to share your location, use your RFID card or a contactless bank card to start the session. These methods do not require the app at all.

  4. 4

    Scan the QR code on the charger

    Some Mer chargers have a QR code that opens the start process in a browser, bypassing the app's location requirement.

Former Grønn Kontakt station not found in Mer app

Mer acquired Grønn Kontakt in Norway, but some older stations may not appear correctly in the Mer app, especially during the transition period.

Symptoms

  • Station visible on the street but not on the Mer app map
  • Searching by the old Grønn Kontakt name returns no results
  • QR code on the charger links to a Grønn Kontakt page that no longer works
  • RFID card from Grønn Kontakt account rejected

How to Fix It

  1. 1

    Update the Mer app to the latest version

    Older versions of the app may not include recently migrated Grønn Kontakt stations. Update from the App Store or Google Play.

  2. 2

    Search by the station's physical address

    Instead of searching by station name, try the street address or zoom into the location on the app map. The station may appear under a new Mer name.

  3. 3

    Enter the charger ID manually

    Look for a station or connector ID printed on the charger hardware. Enter this ID in the Mer app's manual start option.

  4. 4

    Use contactless payment to bypass the app

    If the station has a payment terminal, tap your bank card to start. This works independently of whether the app has the station listed.

Mer App Tips

  • Add a payment method to the Mer app before your first charging session. The app will not let you start a session without a valid payment card on file.
  • Use the filter options in the Mer app to show only stations with available CCS2 connectors. This saves time when you need a fast charger specifically.
  • If the Mer app crashes during a session, your charging will continue. The session runs on the charger, not on your phone. Reopen the app to monitor progress or stop the session.
  • Check the Mer app for pricing before you plug in. Prices vary between stations and can include per-kWh rates, time-based fees, or both. The station detail page shows the current pricing.

Payment Tips

  • Contactless bank card payment is available at newer Mer stations but not all locations. The Mer app shows which payment methods each station supports on the station detail page.
  • Mer accepts Visa and Mastercard through the app. Some prepaid cards and virtual cards may be declined. Use a standard debit or credit card for the most reliable experience.
  • If you charge through a roaming provider like Plugsurfing, check that provider's pricing for Mer stations. Roaming fees can add a significant markup over Mer's direct prices.
  • Mer's app shows your full charging history with costs. If a session was billed incorrectly, you can dispute it through the app's history section.

Frequently Asked Questions

Can the Volvo EX30 charge at Mer?
Yes. The Volvo EX30 uses a CCS2 connector, which is supported by Mer chargers. Maximum charging speed will be up to 158 kW.
How long does it take to charge a Volvo EX30 at Mer?
Charging a Volvo EX30 from 10% to 80% at Mer takes approximately 28 minutes at up to 158 kW. Actual times vary depending on temperature, battery condition, and station load.
How do you pay at Mer?
Mer accepts app, RFID, contactless. Check the Mer app or website for current pricing and subscription options.

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