BMW Drivetrain Warning Message
Are you experiencing a BMW drivetrain warning message?
Don’t ignore it – book a diagnostic today and get expert help.
The following fault code(s) may be present
21F1F6 High-voltage battery, switch contactors: switch-off after a fault
21F136 High-voltage, cell supervision circuit 4: undervoltage (at least one cell)
21E6E9 Charging electronics: charging module
0316D6 High-voltage battery unit: category 6 fault, command based opening of switch contactors
0316D1 High-voltage battery unit: category 1 fault
Affected Vehicles
BMW 530e
- Plug-in Hybrid models
Common Failure Symptoms
- Drivetrain warning message appears on the dash, often with accompanying hybrid or high-voltage system warnings
- Noticeable reduction in electric/hybrid drive performance: loss of EV-only range or earlier than expected transition to combustion engine
- Logging of fault codes related to high-voltage battery modules, cell supervision circuits or contactors
- Voltage delta in battery cell modules increases significantly under load (from ~70 mV under no load to over ~750 mV under load in this case)
Are you experiencing a BMW drivetrain warning message?
Don’t ignore it – book a diagnostic today and get expert help.
BMW 530e Diagnostic Report
BMW 530e Repairs
Resolution
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Is the vehicle owned by you or your business?
Have you been advised the battery or component needs replacing on your vehicle?
Before committing to a costly full replacement, talk to us. At LKQ Electriq, we specialise in inspecting, diagnosing and repairing complex battery and component faults (issues that many main dealers won’t touch).
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High Voltage System Repairs
Repairs involving high voltage systems typically include a 12-month, unlimited mileage warranty, offering you complete peace of mind.*
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All work carried out at Cedar Garage is backed by our lifetime workmanship guarantee.
*Terms and conditions apply. Please consult a Service Advisor to confirm the specific warranty details for your vehicle prior to booking.


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