G30/31 (2016-2023) 989xxx0 9135Wh Module change Battery repair operation manual 24042025812391

This repair manual price is: 800€ + Tax BUY REPAIR MANUAL HERE SOON
This operation manual is a proprietary business secret that outlines the successful refurbishment process for BMS system without destroying complete unit or battery pack. By following the provided instruction steps, which include text, images, and videos, you will be fully equipped to repair the HVB effectively and efficiently. In teasing part of article you can alligne if this article fits your needs. Article is non-refundable
You can charge this service: 4000-10,000€. New battery pack is aprox. 12,000€
You need 32 labor hours to deploy this repair
Common causes:
  • CAR CRASH FLAG
  • Cell imbalance
  • Battery deeply discharged due to prolonged inactivity
  • Normal tear and wear at 100,000km needs change of all modules
Errors:
  • 21F1F6 ,
  • 21F126 ,
  • 21F137 ,
  • 21F234 ,
  • Limited SOC - 30%-60%
Part numbers:
  • 61259897230,
Tools needed (prepare it) :
  • Torx T20, T25,
  • Allen key 5,6,7,8,9.10
  • 10mm ratchet
  • Fluke Voltmeter
  • LAB Powersupply 400V
  • Lab discharge
  • Soldering iron and hot air gun
  • Spare part (16S modules)
  • Movable hydraulic liftbench
  • OBD Diagnostic
Repair operation steps
 Step 1:
Before performing any work on the BMW high-voltage battery system, it is mandatory to prepare a controlled and safe working environment in accordance with high-voltage safety protocols. Lvl 3 HV Access license needed.

Read error codes with diagnostic tool and confirm you have same error codes and faults.

Secure the work area – The workspace must be clean, dry, clearly marked as an HV zone, and equipped with proper safety gear (HV gloves, face shield, insulating mat).

Disconnect the 12V system 

Perform safe high-voltage system shutdown – Using approved tools and following OEM procedures, disconnect the HV connectors and wait the required cool-down period for capacitor discharge.

Verify absence of voltage (Zero Voltage Verification) – Use an appropriate HV tester to ensure that no voltage is present in the system before proceeding.

Remove the battery pack – Once confirmed safe, proceed with mechanical removal of the battery pack using factory mounting points and proper...
You have reached a restricted content! You must buy this online training operation manual to get access.