TESLA Fault

BMS-F040

BMS_f040_SW_BMS_PCB_OT

Also written as BMS_F040 / BMS F040 / BMS_f040_SW_BMS_PCB_OT / bms_f040_sw_bms_pcb_ot

System
BMS
Battery Management System
Type
Fault
Category
Battery
Severity
Fault (Critical)

Why does the exact Tesla alert ID matter?

Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.

What does BMS-F040 mean?

Tesla fault code in the Battery Management System (BMS) module. The battery pack is over heating.

Original Description

The battery pack is over heating.

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

  • Battery temperature warning on touchscreen
  • Reduced charging speed or charging stops
  • Vehicle limits performance in hot conditions

How to Diagnose and Resolve

  1. 1 Stop driving and park in a cool, ventilated area
  2. 2 Turn off the vehicle and allow battery to cool — use Tesla app to run A/C
  3. 3 Do not charge while the alert is active
  4. 4 After 30–60 minutes of cooling, check if alert clears
  5. 5 If overheating recurs frequently, schedule Tesla Service to inspect the thermal management system

Severity Notes

BMS-F040 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.

Other BMS Codes

BMS_a001 BMS_a002 Tesla alert code in the Battery Management System (BMS) modu... BMS_a003 Tesla alert code in the Battery Management System (BMS) modu... BMS_a004 Tesla alert code in the Battery Management System (BMS) modu... BMS_a007 Tesla alert code in the Battery Management System (BMS) modu... BMS_a016 Tesla alert code in the Battery Management System (BMS) modu... BMS_a017 BMS_a018
View all BMS codes →