BYD ATTO 3 Charging at Mer

BYD ATTO 3 Charger Won't Start? Fix It Step by Step

Your BYD ATTO 3 is plugged in but charging has not started. The charger might be blinking, showing an error, or completely unresponsive. This happens to every EV driver eventually. Walk through these steps to figure out whether the problem is the charger, the car, or something in between.

Symptoms

• Charger display shows an error code after plugging in
• CCS2 connector is inserted but the ATTO 3 does not respond
• Charging port indicator light stays off or flashes a warning color
• Charger screen says 'waiting for vehicle' indefinitely
• Type 2 AC cable locks in but no power flows to the car

What to Do

1. 1

   Check the charger screen for instructions

   Read any error messages or prompts on the charger display. It will tell you if authentication is needed, if there is a fault, or if it is waiting for the vehicle to respond.

2. 2

   Remove and reinsert the connector

   Pull the CCS2 or Type 2 connector out completely, wait 10-15 seconds, and push it back in firmly until you hear the locking click.

3. 3

   Authenticate with the charger

   Tap your RFID card, open the network's app to start the session, or try contactless payment. If one method fails, try another.

4. 4

   Check the charge port for obstructions

   Look inside the ATTO 3's charge port for debris, dirt, water, or ice. Clean it gently if needed. Make sure the flap is fully open and not interfering with the connector.

5. 5

   Lock and unlock the car

   Use the BYD app or key to lock and then unlock the ATTO 3. This can reset the charge port locking mechanism and communication system.

6. 6

   Try a different charger

   If nothing works, try another stall or station. If another car can charge at the same stall, the issue may be specific to your ATTO 3 and worth a service visit.

BYD ATTO 3 Charging Payment Failed? Quick Fixes

You have your BYD ATTO 3 plugged in and ready, but the payment will not go through. Card rejected, app error, or you simply cannot figure out how to pay at this charger. Payment problems prevent more charging sessions than most people realize. Here is how to solve it.

Symptoms

• RFID card tap gets no response from the charger
• Charging app shows payment declined or error
• Contactless bank card rejected at the charger terminal
• Charger prompts for payment but nothing you try works
• Session starts then terminates within seconds due to billing failure

What to Do

1. 1

   Check accepted payment methods on the charger

   Look for payment logos, QR codes, and instructions on the charger unit. This tells you which RFID cards, apps, or bank card types work here.

2. 2

   Download and use the network's app

   Scan the QR code or search for the network's app. Create an account, add your card, and start the session through the app. This often works when RFID fails.

3. 3

   Try a different payment method

   Switch between RFID card, app payment, and contactless bank card. If you have a roaming provider, try that. Having multiple options greatly increases your chances.

4. 4

   Check for bank holds or declines

   Open your banking app to see if a pre-authorization was attempted and declined. Contact your bank if needed, or try a different card with sufficient available balance.

5. 5

   Try another stall at the station

   If the card reader is broken on one stall, the next one might work fine. Try the adjacent stall before leaving.

6. 6

   Find a nearby alternative station

   Use your charging app to find another station nearby where your payment methods are known to work. Filter by network if possible.

BYD ATTO 3 Charging Slowly? LFP Cold Tips Inside

Your BYD ATTO 3 is charging much slower than the 89kW you expected. The ATTO 3 uses an LFP battery, which is great for longevity and safe to charge to 100% daily, but LFP is significantly more sensitive to cold temperatures than NMC chemistry. Without preconditioning, cold weather hits especially hard. Here is what is going on and what you can do.

Symptoms

• DC charging power well below 89kW on the charger display
• Extremely slow charging in cold weather, sometimes under 20kW
• AC charging not reaching 11kW
• Charging speed drops sharply above 60-70% SOC
• First charge of the day in winter is dramatically slower than summer

What to Do

1. 1

   Check the outside temperature

   If it is below 10C, your LFP battery is likely too cold for fast charging. Below 0C, expect significantly reduced speeds. This is the most common cause of slow charging on the ATTO 3.

2. 2

   Drive longer before charging in cold weather

   Since the ATTO 3 has no preconditioning, drive for at least 30-45 minutes, ideally on a highway, before stopping at a DC charger. This warms the LFP battery through use.

3. 3

   Check the charger's rated power

   Verify the charger can deliver at least 89kW. A 50kW charger limits your speed regardless of battery temperature. Look for chargers rated 100kW or above.

4. 4

   Arrive at a lower SOC

   The ATTO 3 charges fastest between 10-50% SOC. On road trips, plan to arrive at each charger between 10-20% for the best speed.

5. 5

   Choose a stall without power sharing

   Pick a stall where the adjacent one is empty to avoid power sharing. Some stations label which stalls share power output.

6. 6

   For AC, use a 3-phase Type 2 connection

   The ATTO 3 supports 11kW AC charging. Ensure your cable and charger are both 3-phase capable. A single-phase connection limits you to about 3.6kW.

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.