Our official Whatsapp SIM has been stolen. Any message sent from +85284032954 is NOT from a member of My Supercar Expert team. Click for more info

Mercedes-Benz EQA (H243) EQB (X243) EQC (N293) 2019-2025 Battery Gateway EB300 BGW A2939008100 Used

Description

The module is commonly faulty. If this module is faulty, none of the BMCs can communicate with the diagnostic, leading to erronenously trying to fix file or replacing hardware for no reason.

Common faults related to software issues (can resolve via file):
Low charge (and battery won't charge);
Frequency counter "Switching cycles of contactors" has reached its final value
Crash fault

Common faults related to hardware issues (requires to replace the BMC):
No communication (on one module rather than both)
Internal error
Battery cell values unreadable via live data
Battery temperature sensor data unreadable via live data

If no diagnosis is even possible on any BMC installed on the car, it's worth switching out the gateway to see if it is the problem.

Compatible part numbers: A2939008100

Brand Model Type Year Part no.
Mercedes
 EQA (H243)
 2019-2025 A2939008100
Mercedes EQB (X243) 2019-2025 A2939008100
Mercedes EQC (N293) 2019-2025 A2939008100
Product form

Next day shipping

$300.00

Import fees may apply. Ask our team for more info!

  • Shipped today? Order within: May 08, 2026 14:00:00 +0800

    • Guaranteed secure & safe checkout.

      paypal
      Before you order...

    Check on the "Conditions" paragraph right above if any device is needed for coding or programming this product.

    On your purchase, you will receive detailed instructions on how to install your new part.

    Remember you can always contact us in advance for any info!

      100% Tested

    The product has been tested before shipping.

    ShippingShipping

    We ship by DHL, FEDEX and UPS worldwide: for these couriers, delivery times are usually as it follows:
    Europe -> 5-7 days
    ASEAN and East Asia -> 1-3 days
    GCC and Oceania -> 3-6 days
    Rest of Asia -> 4-7 days
    Rest of the world -> 7-10 days

    For USA market please check here.

    Description

    The module is commonly faulty. If this module is faulty, none of the BMCs can communicate with the diagnostic, leading to erronenously trying to fix file or replacing hardware for no reason.

    Common faults related to software issues (can resolve via file):
    Low charge (and battery won't charge);
    Frequency counter "Switching cycles of contactors" has reached its final value
    Crash fault

    Common faults related to hardware issues (requires to replace the BMC):
    No communication (on one module rather than both)
    Internal error
    Battery cell values unreadable via live data
    Battery temperature sensor data unreadable via live data

    If no diagnosis is even possible on any BMC installed on the car, it's worth switching out the gateway to see if it is the problem.

    Compatible part numbers: A2939008100

    Brand Model Type Year Part no.
    Mercedes
    		 EQA (H243)
    		 2019-2025 A2939008100
    Mercedes EQB (X243) 2019-2025 A2939008100
    Mercedes EQC (N293) 2019-2025 A2939008100

    Our best sellers

    See more

    See more

    Customers are saying

    4.75 ★ (139)
    Verified

    Recently viewed products

      Sign up for our newsletter

      Stay ahead in supercar and premium vehicle electronics

      Get first access to new repair kits, exclusive upgrade insights, expert tech tips, step-by-step repair videos, and curated updates on diverse repair solutions - all delivered straight to your inbox.

      <h2><strong>Stay ahead in supercar and premium vehicle electronics</strong></h2>

      Login

      Forgot your password?

      Don't have an account yet?
      Create account