Battery BMS File Reset and Repair Online Service for Tuners and Owners

 Download a BMS reset file or send us your battery for repair.

Bring your battery back to life with ARMHEX’s trusted BMS Reset Service!

Has your car been involved in an accident?

Is the BMS crash error preventing the car from starting or charging?

Was the car parked for a long time, and now the battery is not working?

Still seeing BMS errors, charging issues, or safe mode even after repairs?

Under-voltage or crash alerts won’t clear?

Download BMS reset files and restore your battery in minutes, or send us your battery if you’re the owner.

Keep reading to see how our service works and how we can help.

1. What is the BMS? 
2. What is the meaning of BMS Reset?
3. Why do we reset the Battery Management System (BMS) after an accident or discharge?
4. How to use ARMHEX BMS Reset Online Service ( for tuners & owners)?
5. How long does it take?
6. How much does it cost?
7. Guarantee and technical support

1. What is the BMS?

The Battery Management System (BMS) or Battery Pack Control Module (BPCM) is an essential ECU in modern vehicles, especially electric vehicles (EVs) and hybrids, that manages and monitors the performance of the battery.

You can find many types of these batteries in Tesla, Volvo, Mercedes, Porsche, Audi, Toyota, Honda, ...cars.

It manages essential battery functions, such as monitoring voltage, temperature, current, state of charge (SoC), and cell balancing, in lithium-ion (Li-ion) LiFePO4 batteries. The voltage of these batteries can be different, like 48V, 16V, and 12V.

These batteries are used in many automotive brands, including Volvo, BMW, Mercedes, Tesla, Toyota, BYD, Porsche, Audi, and others.

Its primary responsibilities include:

• Voltage, current, and temperature monitoring to ensure the battery operates within safe limits
• State of charge (SoC) management to accurately track the battery's remaining power
• Cell balancing to ensure each battery cell is evenly charged, optimizing performance and lifespan
• Protection against overcharging, overheating, or under-voltage events that could damage the battery or vehicle

The BMS also controls critical safety features, including shutting down or limiting power if it detects a fault or crash, sometimes preventing the vehicle from starting or charging. 

2. What is the Meaning of BMS Reset?

The BMS can trigger safety measures, like limiting charging or preventing the vehicle from starting, if it detects anomalies such as under-voltage, over-voltage, temperature issues, or crash impacts.

The BMS (Battery Management System) reset refers to restoring the BMS to its default or normal operating state after it has detected an issue, such as a fault, crash, impact, or battery-related error.

This process is done by programming the proper file, calibration, or software (dump) into the BMS memory, EEPROM, or MCU.

3. Why Do We Reset the BMS or the Battery Management System?

When the BMS/BPCM detects a battery issue, like low cell voltage, it triggers a safety mode that prevents the car from starting or charging, even if the battery is replaced.

Unfortunately, the unit continues to register the fault, often leading to costly replacements from the manufacturer. The errors can not be cleared by regular scan tools or diagnostic tools and need special programming and tools.

Resetting the BMS is necessary when:

1. Crash events trigger a crash-related error that stops the car from starting or charging
2. The car has been parked for a long time, and the battery is discharged.
3. Battery replacements are made, but the BMS still shows errors or does not recognize the new battery
4. Error codes related to the battery remain after fixing the underlying issue (Like under-voltage warnings)
    

Usually, these DTCs also mean that the battery BMS needs to be reset:

P0A80, P0A7F, P0A90, P0AC0, P0AFA, P0AA6, P0AE0, P0AA100, P0AA400, P0DE6FB, P0DE6FA, P0A0E00, P1D2800, P0AA400, P1C8000, P18051C, P1D2800, P1D2700, P1D2777, P1D2785, P1D2771, P1D2885, P1D2877, P1A10, P1A77, P180D1D, P1D799A, P1614FA, P180D64, P14F300, P180D64, P1CB400, P1D7800, B183349, B183384, B183371, B1193, B1418, B0001, U3000, U01A200, U01A100, U01A000, and so on.

ARMHEX BMS Reset Online Service can clear these faults, restore normal operation, and allow the vehicle to function as intended without replacing the BMS unit.

4. How to Reset BMS after an accident or Discharge Using ARMHEX Online Service? (For Tuners)

Using the ARMHEX battery BMS Reset online service is straightforward and works similarly to the BMS Reset Software and tool.

1. Choose or search your car brand and battery ECU number
2. Select your desired services
3. Upload battery ECU dump, D-Flash, or EEPROM
    
4. Download your repaired file right after payment if an automatic solution is available.
    
5. If a manual solution is required for your selected ECU, our expert team will modify your file after payment and submission. The repaired BMS file will be delivered via email or your preferred platform (e.g., WhatsApp) within minutes during working hours.
    
6. After processing, we’ll send you the modified file. Simply reflash it to your BMS memory chip to complete the reset.

5. How Long Does It Take?

Tuners:

1. Download your repaired file right after payment if an automatic solution is available. No waiting time!
    
2. If a manual solution is required for your selected ECU, our expert team will modify your file after payment and submission. The repaired BMS file will be delivered via email or your preferred platform (e.g., WhatsApp) within minutes during working hours. (Less than an hour)

Owners: 

Turnaround time depends on the model of the BMS or the car. You can contact us to get detailed information. Usually, all orders are processed within 1-2 business days.

6. Pricing Information: How Much Does the BMS Reset Cost?

For Tuners: 

You can view approximate service prices on our Pricing page. For the exact cost, simply select your vehicle, BMS ECU part number, and the desired service, and the system will then display the final price.

The total price may vary based on several factors. New users receive a discount code, and the largest savings are reserved for VIP members.

Our VIP Plan includes:

• Priority file processing
• Exclusive discounts on future orders
• Access to special offers and promotions

Interested in becoming a VIP? Visit the pricing and plans page or contact us to learn more and unlock these benefits.

For Owners:

To get the exact price, please contact us. 

7. Guarantee and Technical Support

At ARMHEX Center, we are committed to delivering exceptional online services to tuners, owners, DIY, and automotive repair technicians and providing the fastest, highest-quality technical support. 

If you encounter any issues with your modified file or repaired ECU, we are dedicated to resolving them swiftly and effectively. Our support team can always address your concerns and offer assistance whenever needed.

We also offer a 100% Money-Back Guarantee if you are not satisfied with our service or the service, tuned, and repaired BMS ECU file (or BMS) does not meet the specified requirements, and our technical team cannot resolve the issue.

For any questions or concerns, please contact us via email or WhatsApp.

WhatsApp: +1 657 229 1838
Email: tuning.armhex@gmail.com

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