bms_a064
Moderate
Tesla · Sedans
Maximum battery charge level reduced
Quick Answer
Error code BMS_a064 on your Tesla Sedans means: Maximum battery charge level reduced. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Perform full battery discharge-recharge cycle to recalibrate BMS
2
Reduce DC fast charging frequency and use Level 2 AC charging instead
3
Check battery temperature sensors via diagnostic interface
4
Review charging history for excessive supercharging patterns
5
If persists, contact Tesla service for BMS software update or battery replacement evaluation
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Level 2 charger for slow recharge
BMS calibration software
Battery temperature sensor replacement kit
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