BMS-F042
BMS_f042_SW_Humidity
Also written as BMS_F042 / BMS F042 / BMS_f042_SW_Humidity / bms_f042_sw_humidity
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-F042 mean?
Tesla fault code in the Battery Management System (BMS) module. The humidity is over the safe threshold in pack. This could indicate a problem with the sealing of the battery pack.
Original Description
The humidity is over the safe threshold in pack. This could indicate a problem with the sealing of the battery pack.
Affected Tesla Models
What You May Notice
- Battery pack warning related to moisture
- Possible charging limitations
- No immediate performance symptoms in most cases
How to Diagnose and Resolve
- 1 Avoid parking outdoors in heavy rain for extended periods
- 2 Do not charge immediately — allow humidity levels to stabilize
- 3 Reboot the vehicle and check if alert clears
- 4 If alert persists or if you notice any unusual smells, contact Tesla Service promptly
- 5 Technician will inspect battery pack seals and humidity sensor readings
Severity Notes
BMS-F042 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.