BMS_w179 — Replace Smart Fuse Limp

Full alert identifier: BMS_w179_ReplaceSmartFuseLimp

Message shown in the car

Vehicle may not restart Service is required

Alert description

The Battery Management System (BMS) has detected the High Voltage (HV) battery pyro fuse is close to expiration. The fuse must be replaced with a new self-powered hybrid pyro fuse.

Potential impact

Vehicle drive power will be reduced.

Set condition

BMS detects that the HV battery pyro fuse is 3 months past its recommended end of life.

Clear condition

Pyro fuse is replaced with a self-powered hybrid pyro fuse.

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal	Unit
Fuse Age `BMS_a179_fuseAge`	Years

Signal	Unit
Fuse Born Month `BMS_a179_fuseBornMonth`	—
Fuse Born Year `BMS_a179_fuseBornYear` 0 UNPROGRAMMED YEAR 255 SNA	—
Fuse Type `BMS_a179_fuseType` 0 UNKNOWN FUSE TYPE 1 BATTERYPOWERED HYBRIDPYRO 2 SELFPOWERED HYBRIDPYRO 3 BATTERYPOWERED HYBRIDPYRO 2 4 SAND FUSE 15 SNA	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_w179.