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

Troubleshooting

Porsche Taycan Charging at Mer

Updated March 2026

The Porsche Taycan 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
300 kW
10-80% estimate
17 min
Payment
app, RFID, contactless

Why Your Charging Speed May Differ

The Porsche Taycan supports up to 322 kW DC charging. Mer chargers deliver up to 300 kW. The network's maximum power is lower than what the car can accept, so your effective speed tops out at 300 kW.

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

Porsche Taycan Charging Problems

Porsche Taycan Charger Will Not Start a Session

You are at the charger, the CCS2 connector is in, but nothing happens. The charger screen stays on the start page, or shows an error and resets. Charger startup problems on the Taycan are almost always about the connector fit, the charge port location, or authentication. Here is how to get the session going.

Symptoms

  • Charger screen stays on the welcome page after plugging in
  • Charger displays an error code and resets to the start screen
  • Charge port light on the Taycan does not turn on or blinks red
  • CCS2 connector clicks in but the car does not acknowledge it
  • Charger says 'Vehicle not detected' or 'Communication error'

What to Do

  1. 1

    Reinsert the CCS2 connector firmly

    Remove the connector completely, check for debris or ice in the Taycan's charge port, and reinsert it straight and firm until you hear and feel a click. The charge port light should turn on.

  2. 2

    Check the charge port flap

    Make sure the charge port door on the right rear is fully open. If it is stuck, gently push it. In freezing conditions, use warm water (never force it) to free any ice. The flap must be clear of the connector path.

  3. 3

    Confirm the car is in Park

    Check the PCM display to make sure the Taycan is in Park. Also check that no charging timer or schedule is blocking immediate charging. Go to Settings, then Charging, and verify that direct charging is enabled.

  4. 4

    Authenticate with the charger

    Tap your RFID card, start the session in the charger operator's app, or use Porsche Charging Service through the My Porsche app. Make sure you select the correct stall number if using an app. Wait for the charger to confirm authorization before expecting the session to begin.

  5. 5

    Try a different stall or station

    If the charger still will not start after reinserting the connector and authenticating, the charger may be faulty. Try a different stall at the same location. If all stalls fail, move to the nearest alternative station.

  6. 6

    Restart the Taycan's infotainment system

    In rare cases, restarting the PCM can resolve communication issues. Hold down the center display button for about 10 seconds until the screen goes dark, then release. Wait for it to restart and try plugging in again.

Porsche Taycan Charging Payment Failed at Station

You are at the charger, your Taycan is plugged in, but the payment will not go through. The charger says 'Authorization failed' or the Porsche Charging Service app is not connecting. Payment issues are one of the top reasons a charging session never starts. Most of the time, the fix takes less than two minutes.

Symptoms

  • Charger screen shows 'Authorization failed' or 'Payment declined'
  • Porsche Charging Service does not start the session automatically
  • RFID card tap produces an error or no response from the charger
  • Contactless bank card is declined at the charger's payment terminal
  • Charger accepts payment but the session ends immediately with zero kWh

What to Do

  1. 1

    Check Porsche Charging Service status

    Open the My Porsche app and check your Charging Service contract. Make sure it is active and your payment method on file is valid. If it has expired, renew it or switch to a different payment method at the charger.

  2. 2

    Try the charger operator's app

    Look for the network name on the charger (Ionity, Shell Recharge, Allego, EnBW, etc.). Open their app, add a payment method if you have not already, and start the session. Make sure the stall number in the app matches the number on the charger you are using.

  3. 3

    Try a different payment method

    If your primary method fails, switch to a backup. Try a different RFID card, a different bank card for contactless, or a different charging app. Having at least two options covers most situations.

  4. 4

    Check your card balance

    Open your banking app and verify you have enough available balance for the pre-authorization hold. Previous charging sessions may have pending holds that reduce your available balance temporarily.

  5. 5

    Reset the charger and try again

    Press the stop or reset button on the charger. Wait for it to return to the welcome screen. Unplug the connector from your Taycan, wait 30 seconds, plug back in, and authenticate again.

  6. 6

    Move to a different stall or station

    If nothing works, try a different stall at the same station. Payment terminals can fail independently. If the entire station is not processing payments, use your Taycan's PCM navigation or Google Maps to find the nearest alternative.

Porsche Taycan Charging Slower Than Expected

You plugged in your Porsche Taycan expecting 270 kW and the Porsche Communication Management screen shows 80 kW. Or your wallbox is stuck at 3 kW instead of 11 kW. The Taycan has one of the fastest charging architectures on the market, but real-world speeds depend on battery temperature, charger capability, and a few settings you can check yourself.

Symptoms

  • DC fast charging speed well below the 270 kW maximum
  • AC home charging stuck at 3-4 kW instead of 11 kW or 22 kW
  • Charging speed drops sharply after reaching 50-60%
  • PCM shows lower power than the charger's rated output
  • Charging session starts fast but slows down within minutes

What to Do

  1. 1

    Use Porsche navigation for preconditioning

    Enter your charging stop as a destination in the Porsche Communication Management system. The Taycan will automatically precondition the battery to the ideal temperature during the drive. This is the single most effective way to reach peak charging speeds.

  2. 2

    Check if the charger supports 800V

    Look at the charger's specifications, usually printed on the unit or shown in the operator's app. Chargers rated at 350 kW (like Ionity HPC) typically support 800V. If the charger is 50 kW or 150 kW, expect lower speeds regardless of your Taycan's capability.

  3. 3

    Check your state of charge

    If you are above 80%, the slower speed is by design. For the fastest charging, arrive between 5-20% and charge to 80%. The Taycan's charging curve is steepest in this range.

  4. 4

    Verify your AC charging setup

    For home charging, check whether your wallbox is wired for 3-phase power. In the Taycan's charging settings on PCM, confirm the AC charge current is set to maximum. If you have the 22 kW AC option, your wallbox must also support 22 kW.

  5. 5

    Try a different charger or stall

    If speeds remain low at a DC charger, move to an unoccupied stall or a different station. Some chargers degrade over time and deliver less than their rated power. The My Porsche app or Porsche Charging Service can help find 800V-capable chargers 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 Porsche Taycan charge at Mer?
Yes. The Porsche Taycan uses a CCS2 connector, which is supported by Mer chargers. Maximum charging speed will be up to 300 kW.
How long does it take to charge a Porsche Taycan at Mer?
Charging a Porsche Taycan from 10% to 80% at Mer takes approximately 17 minutes at up to 300 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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