Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2018 Tesla Model S 100DFACTORY OEM SERVICE PROCEDURE

Alert Codes -- Model S

Select a section or procedure below to view factory instructions:

Alert Code General Information Alert Code: APP_w009_aebFault Alert Code: APP_w225_lcDegradedVisSpeedLmt Alert Code: BMS_f001_HW_Over_Current Alert Code: BMS_f002_HW_Over_Voltage Alert Code: BMS_f003_HW_Module_Alarm Alert Code: BMS_f009_SW_Pos_Contactor_Drive Alert Code: BMS_f010_SW_Neg_Contactor_Drive Alert Code: BMS_f011_HW_Illegal_Ctr_Req Alert Code: BMS_f016_SW_Thermal_Gradient Alert Code: BMS_f017_SW_Brick_OV Alert Code: BMS_f018_SW_Brick_UV Alert Code: BMS_f020_SW_BMB_PCB_OT Alert Code: BMS_f022_SW_Over_Current Alert Code: BMS_f024_SW_Ctrs_Open_Under_Load Alert Code: BMS_f029_SW_Current_Sensor_Reset Alert Code: BMS_f030_SW_Chg_Port_Door_Open Alert Code: BMS_f031_SW_Precharge_Res_Hot Alert Code: BMS_f036_SW_HVIL Alert Code: BMS_f037_SW_Pos_Contactor Alert Code: BMS_f038_SW_Neg_Contactor Alert Code: BMS_f039_SW_DC_Link_Over_Voltage Alert Code: BMS_f052_SW_Charger_MIA Alert Code: BMS_f055_SW_Pump Alert Code: BMS_f056_SW_Module_Temp_Outlier Alert Code: BMS_f057_SW_Chiller Alert Code: BMS_f058_SW_Heater_Performance Alert Code: BMS_f060_SW_BMB_Power_Supply Alert Code: BMS_f062_SW_Ctr_Pwr_Supply Alert Code: BMS_f063_SW_Precharge_Failure Alert Code: BMS_f064_SW_BrickV_Imbalance Alert Code: BMS_f066_SW_High_Brick_Imp Alert Code: BMS_f067_SW_Low_Coolnt_Flow_Rate Alert Code: BMS_f068_SW_Low_SOC Alert Code: BMS_f069_SW_Low_Power Alert Code: BMS_f071_SW_SM_TransCon_Not_Met Alert Code: BMS_f077_SW_Charger_Regulation Alert Code: BMS_f079_SW_Ctr_Pwr_Interrupted Alert Code: BMS_f084_SW_Pack_Imbalance Alert Code: BMS_f085_SW_Prechg_Too_Slow Alert Code: BMS_f086_SW_Not_Ok_To_Precharge Alert Code: BMS_f087_SW_Prechg_Too_Fast Alert Code: BMS_f088_SW_DTC Alert Code: BMS_f089_SW_THC_MIA Alert Code: BMS_f093_SW_FastChg_Problem Alert Code: BMS_f095_SW_FastChg_Regulation Alert Code: BMS_f096_SW_Fast_Charger_MIA Alert Code: BMS_f097_HW_BMB_Under_Voltage Alert Code: BMS_f098_HW_BMB_Over_Voltage Alert Code: BMS_f099_SW_BMB_Communication Alert Code: BMS_f104_HW_BMB_Enumeration Alert Code: BMS_f105_SW_One_Module_Tsense Alert Code: BMS_f109_SW_Bleed_Resistor Alert Code: BMS_f111_SW_BMB_ADC_Alert Code: BMS_f114_SW_FC_Contactors Alert Code: BMS_f124_SW_BMB_Comm_Integrity Alert Code: BMS_f125_SW_BMS_Ctr_Curr_Sensor Alert Code: BMS_f127_SW_CPLD_CRC Alert Code: BMS_f129_SW_BMB_VSH_Connector Alert Code: BMS_f130_SW_Module_Alrm_Redund Alert Code: BMS_f134_SW_Delayed_Ctr_Off Alert Code: BMS_f136_SW_Module_OT_Warning Alert Code: BMS_f137_SW_Brick_UV_Warning Alert Code: BMS_f138_SW_Brick_OV_Warning Alert Code: BMS_f139_SW_DC_Link_V_Irrational Alert Code: BMS_f140_SW_OverCurrent_Sense Alert Code: BMS_f142_SW_Isolation_Degradatio Alert Code: BMS_f143_SW_BMB_OTP_Reg_Wrong Alert Code: BMS_f144_SW_CPLD_Version_Wrong Alert Code: BMS_f145_SW_socChange Alert Code: BMS_f149_SW_precharge_too_short Alert Code: BMS_f150_SW_precharge_too_long Alert Code: BMS_f152_SW_pos_contactor_welded Alert Code: BMS_f153_SW_neg_contactor_welded Alert Code: BMS_f162_SW_FC_Prechg_Too_Slow Alert Code: BMS_f164_SW_Brick_SOC_Imbalance Alert Code: BMS_f165_SW_Module_SOC_Imbalance Alert Code: BMS_f166_SW_AhToBeCharged_Imbal Alert Code: BMS_u001_DisChg_While_Charging Alert Code: BMS_u002_Ramp_Down_Active Alert Code: BMS_u003_Insufficient_drive_pwr Alert Code: BMS_u004_Charge_Cable_Connected Alert Code: BMS_u005_Low_Power_Until_Charge Alert Code: BMS_u006_End_of_Drive_Ramp_Down Alert Code: BMS_u008_limpMode Alert Code: BMS_u011_Fast_Charger_Problem Alert Code: BMS_u012_Fast_Charger_Incompat Alert Code: BMS_u013_Not_Supercharge_Capable Alert Code: BMS_u014_Not_Enough_Pwr_To_Heat Alert Code: BMS_u015_Not_Fast_Charge_Capable Alert Code: BMS_u016_FEIM_Delayed_Ctr_Close Alert Code: BMS_u017_Charge_Already_Complete Alert Code: BMS_u018_Max_Charge_Limited Alert Code: BMS_u019_Acceleration_Reduced Alert Code: BMS_u020_Cannot_Precharge_FC Alert Code: BMS_w007_SW_Module_Alarm_Broken Alert Code: BMS_w008_HW_HVIL Alert Code: BMS_w019_SW_BMB_Module_OT Alert Code: BMS_w023_SW_Contactors_Open_HWOC Alert Code: BMS_w026_SW_Ctrs_Disabled Alert Code: BMS_w034_SW_Isolation_Sensor Alert Code: BMS_w035_SW_Isolation Alert Code: BMS_w050_SW_BMB_MIA Alert Code: BMS_w051_SW_Current_Sensor_MIA Alert Code: BMS_w054_SW_Current_Sensor Alert Code: BMS_w059_SW_Pack_Voltage_Sensing Alert Code: BMS_w061_SW_BMS_Power_Supply Alert Code: BMS_w074_SW_Charging Alert Code: BMS_w080_SW_Int_HV_Disconnect Alert Code: BMS_w094_SW_Drive_Inverter_MIA Alert Code: BMS_w100_HW_BMB_Reset Alert Code: BMS_w101_HW_BMB_Over_Temperature Alert Code: BMS_w102_HW_BMB_Thermal_Shutdown Alert Code: BMS_w106_SW_All_Module_Tsense Alert Code: BMS_w107_SW_Cell_Voltage_Sensor Alert Code: BMS_w108_HW_BMB_Alarm_Self_Test Alert Code: BMS_w110_SW_Module_Vsense Alert Code: BMS_w117_SW_Wrong_Battery_Pack Alert Code: BMS_w123_SW_Internal_Isolation Alert Code: BMS_w132_HW_BMB_OTP_Uncorrctbl Alert Code: BMS_w141_SW_12V_Pwr_Supply_Low Alert Code: BMS_w146_SW_Brick_Overdischarged Alert Code: BMS_w151_SW_external_isolation Alert Code: BMS_w156_SW_BMB_Vref_bad Alert Code: CHG_f011_hwVInOV Alert Code: CHG_f012_hwFastChargeDriver Alert Code: CHG_f016_hwVOutOV Alert Code: CHG_f017_hwIntermediateBus Alert Code: CHG_f018_hwLineOC Alert Code: CHG_f019_hwIBatOC Alert Code: CHG_f020_hwHVIL Alert Code: CHG_f022_hw12VUV Alert Code: CHG_f024_VLineOVPk Alert Code: CHG_f025_VLineUV Alert Code: CHG_f026_VOutOV Alert Code: CHG_f027_VOutUV Alert Code: CHG_f028_igbtOT Alert Code: CHG_f030_VLineFreqOF Alert Code: CHG_f031_VLineFreqUF Alert Code: CHG_f034_swHVIL Alert Code: CHG_f035_pilotRationality Alert Code: CHG_f055_VLineDischarge Alert Code: CHG_f057_VLineOV Alert Code: CHG_f065_FCCntrRationalitycheck Alert Code: CHG_f076_iLineOCPk Alert Code: CHG_f077_iLineOCRMS Alert Code: CHG_f078_boostPrechargeFail Alert Code: CHG_f079_GFCI Alert Code: CHG_f080_vIntOutofRange Alert Code: CHG_f081_iacRegulation Alert Code: CHG_f091_proximityRationality Alert Code: CHG_f099_noFlowDetected Alert Code: CHG_f108_cpCoverOpen Alert Code: CHG_u001_LineImpedanceHigh Alert Code: CHG_u002_LineImpedanceTooHigh Alert Code: CHG_u003_chargeThermalLimit Alert Code: CHG_u004_wallPowerRemoval Alert Code: CHG_u005_proxLatchedNoPilot Alert Code: CHG_u006_latchDownProxLatched Alert Code: CHG_u007_chargeCableFault Alert Code: CHG_u010_BadChargeCable Alert Code: CHG_u012_PilotCurrentReduced Alert Code: CHG_u013_chargeStoppedNoPilot Alert Code: CHG_u014_connectorFault Alert Code: CHG_u015_FCdisabled Alert Code: CHG_w009_hwFCWeld Alert Code: CHG_w036_HVJB_disconnected Alert Code: CHG_w047_HVJB_groundLoss Alert Code: CHG_w062_FCPosCntrWelded Alert Code: CHG_w063_FCNegCntrWelded Alert Code: CHG_w117_HVJBOTFault Alert Code: CHG_w120_HVJB_powerFault Alert Code: CHG_w124_ph3VersionMismatch Alert Code: CHGS_w124_ph3VersionMismatch Alert Code: CP_w035_latchMovement_1 Alert Code: CP_w041_doorSensorUnplugged Alert Code: CP_w042_doorAssemblyBroken Alert Code: CP_w043_doorPotIrrational Alert Code: DAS_w009_aebFault Alert Code: DAS_w048_DAS_Features_Disabled Alert Code: DCDC_w002_overTemperature Alert Code: DCDC_w005_inputNotOk Alert Code: DI_f012_accel5VSupply Alert Code: DI_f017_hwPedalMonitor Alert Code: DI_f019_hwAccelPedalPower Alert Code: DI_f024_selfTest Alert Code: DI_f046_statorOT Alert Code: DI_f051_batteryOvercurrent Alert Code: DI_f059_heatsinkOT Alert Code: DI_f160_busVoltageAnomaly Alert Code: DI_u001_brakeShiftReq Alert Code: DI_u002_shiftDenied Alert Code: DI_u004_brakeOverride Alert Code: DI_u007_keyNotAuthenticated Alert Code: DI_u008_proximityDriveDenial Alert Code: DI_u011_driveRailNotRequested Alert Code: DI_u012_accelPressedInNP Alert Code: DI_u013_bothPedalsPressed Alert Code: DI_u014_notOkToStartDrive Alert Code: DI_u015_crsNotAvailable Alert Code: DI_u018_crsFrontCameraBlind Alert Code: DI_u019_crsFrontRadarBlind Alert Code: DI_u020_crsSeatbeltUnbuckled Alert Code: DI_u023_holdReleaseRqrd Alert Code: DI_u024_autoparkCanceled Alert Code: DI_u025_autoparkAborted Alert Code: DI_u026_brakeStand Alert Code: DI_u028_crsPathNotClear Alert Code: DI_u030_crsCamsNotCalibrated Alert Code: DI_w039_regenLimited Alert Code: DI_w040_disMIA Alert Code: DI_w062_systemLimpMode Alert Code: DI_w063_systemGracefulPowerOff Alert Code: DI_w124_cruiseFault Alert Code: DI_w126_limpMode Alert Code: DI_w127_gracefulPowerOff Alert Code: DI_w129_epbNotApplied Alert Code: DI_w137_noCapableDriveUnits Alert Code: DI_w138_frontUnitDisabled Alert Code: DI_w139_rearUnitDisabled Alert Code: DIS_w126_limpMode Alert Code: DIS_w127_gracefulPowerOff Alert Code: DIS_w147_highTorqueWearLimit Alert Code: EAS_w005_EAS_reqReduceSpeedDisp Alert Code: EAS_w007_EAS_LevelingNotPossible Alert Code: EPAS_w001_steeringFault Alert Code: EPAS_w002_steeringReduced Alert Code: EPB_u010_serviceModeEnabled Alert Code: EPB_w025_motorShortedApplyL Alert Code: EPB_w050_resetRequired Alert Code: EPB_w051_epbNotApplied Alert Code: EPB_w053_epbNotReleased Alert Code: EPB_w095_invalidConfig Alert Code: ESP_w001_absFaultLamp Alert Code: ESP_w002_espFaultLamp Alert Code: ESP_w003_tcDisabledByFault Alert Code: ESP_w004_messageEBDFailure Alert Code: ESP_w005_messagePumpFailure Alert Code: ESP_w006_messagePumpService Alert Code: GTW_f051_thcPlatformMismatch Alert Code: GTW_f052_bmsPlatformMismatch Alert Code: GTW_f053_gtwPlatformMismatch Alert Code: GTW_f054_diPlatformMismatch Alert Code: GTW_f055_cpPlatformMismatch Alert Code: GTW_f056_chgPlatformMismatch Alert Code: GTW_f057_chgsPlatformMismatch Alert Code: GTW_f082_disPlatformMismatch Alert Code: GTW_f085_pmPlatformMismatch Alert Code: GTW_f094_bmsCpldVersionMismatch Alert Code: GTW_f095_chgCpldVersionMismatch Alert Code: GTW_f096_diCpldVersionMismatch Alert Code: GTW_f097_chgsCpldVersionMismatch Alert Code: GTW_f098_disCpldVersionMismatch Alert Code: GTW_f101_epbPlatformMismatch Alert Code: GTW_f103_epbmPlatformMismatch Alert Code: GTW_f187_chgph1PlatformMismatch Alert Code: GTW_f188_chgph2PlatformMismatch Alert Code: GTW_f189_chgph3PlatformMismatch Alert Code: GTW_f190_chgsph1PlatformMismatch Alert Code: GTW_f191_chgsph2PlatformMismatch Alert Code: GTW_f192_chgsph3PlatformMismatch Alert Code: GTW_f196_chgph1CpldVersMismatch Alert Code: GTW_f197_chgph2CpldVersMismatch Alert Code: GTW_f198_chgph3CpldVersMismatch Alert Code: GTW_f202_chgsph1CpldVersMismatch Alert Code: GTW_f203_chgsph2CpldVersMismatch Alert Code: GTW_f204_chgsph3CpldVersMismatch Alert Code: GTW_f208_noDriveAllowed Alert Code: GTW_f209_noChargeAllowed Alert Code: GTW_f210_noSupportAllowed Alert Code: GTW_f227_icPlatformMismatch Alert Code: GTW_f228_icFpgaVersionMismatch Alert Code: GTW_f232_pmsPlatformMismatch Alert Code: GTW_f243_espConfigMismatch Alert Code: GTW_f244_bcConfigMismatch Alert Code: GTW_f253_radcVersionMismatch Alert Code: GTW_f259_radcPlatformMismatch Alert Code: GTW_f293_espHwCfgMismatch Alert Code: GTW_f294_ibstHwCfgMismatch Alert Code: GTW_u001_chgCableConnected Alert Code: GTW_u002_keyNotInside Alert Code: GTW_u003_bmsPower Alert Code: GTW_u005_dead12vBattery Alert Code: GTW_u006_cabinSocTooLow Alert Code: GTW_u007_cabinOpen Alert Code: GTW_u008_packSocTooLow Alert Code: GTW_u009_notEnough12VForDrive Alert Code: GTW_u010_low12VPower Alert Code: GTW_u013_keyMissingInDrive Alert Code: GTW_u014_carInNeutral Alert Code: GTW_u015_displaysNotReady Alert Code: GTW_u016_driveDisabled Alert Code: GTW_u017_carInShowroomMode Alert Code: GTW_u019_overheatSocTooLow Alert Code: GTW_w011_thcVersionMismatch Alert Code: GTW_w012_bmsVersionMismatch Alert Code: GTW_w013_gtwVersionMismatch Alert Code: GTW_w014_diVersionMismatch Alert Code: GTW_w015_cpVersionMismatch Alert Code: GTW_w016_chgVersionMismatch Alert Code: GTW_w017_accLoadShed Alert Code: GTW_w018_hvacLoadShed Alert Code: GTW_w019_bmsMia Alert Code: GTW_w021_thcMia Alert Code: GTW_w022_dcdcMia Alert Code: GTW_w023_chgMia Alert Code: GTW_w024_chgsMia Alert Code: GTW_w025_easMia Alert Code: GTW_w026_ibsMia Alert Code: GTW_w027_epbMia Alert Code: GTW_w028_chgsVersionMismatch Alert Code: GTW_w036_epasMia Alert Code: GTW_w037_espMia Alert Code: GTW_w041_ptcMia Alert Code: GTW_w042_cpMia Alert Code: GTW_w081_disVersionMismatch Alert Code: GTW_w083_disMia Alert Code: GTW_w084_pmVersionMismatch Alert Code: GTW_w099_epbmMia Alert Code: GTW_w100_epbVersionMismatch Alert Code: GTW_w102_epbmVersionMismatch Alert Code: GTW_w104_ocsMia Alert Code: GTW_w106_espVersionMismatch Alert Code: GTW_w125_dcdcVersionMismatch Alert Code: GTW_w126_icVersionMismatch Alert Code: GTW_w127_epasVersionMismatch Alert Code: GTW_w129_ptcVersionMismatch Alert Code: GTW_w130_rccmVersionMismatch Alert Code: GTW_w131_tunerVersionMismatch Alert Code: GTW_w132_tunerDspVersionMismatch Alert Code: GTW_w133_tunerCalVersionMismatch Alert Code: GTW_w134_secVersionMismatch Alert Code: GTW_w135_bcVersionMismatch Alert Code: GTW_w136_sunVersionMismatch Alert Code: GTW_w137_lftVersionMismatch Alert Code: GTW_w138_ddmVersionMismatch Alert Code: GTW_w139_pdmVersionMismatch Alert Code: GTW_w140_hndfdVersionMismatch Alert Code: GTW_w141_hndrdVersionMismatch Alert Code: GTW_w142_hndfpVersionMismatch Alert Code: GTW_w143_hndrpVersionMismatch Alert Code: GTW_w161_chgPh1Mia Alert Code: GTW_w162_chgPh2Mia Alert Code: GTW_w163_chgPh3Mia Alert Code: GTW_w164_chgsPh1Mia Alert Code: GTW_w165_chgsPh2Mia Alert Code: GTW_w166_chgsPh3Mia Alert Code: GTW_w170_parkAssistMia Alert Code: GTW_w174_Replace12VBattery Alert Code: GTW_w175_low12VPower Alert Code: GTW_w176_notEnough12VForDrive Alert Code: GTW_w177_dead12VBattery Alert Code: GTW_w181_parkAssistSystemDTC Alert Code: GTW_w182_parkAssistFailure Alert Code: GTW_w193_chgph1VersionMismatch Alert Code: GTW_w194_chgph2VersionMismatch Alert Code: GTW_w195_chgph3VersionMismatch Alert Code: GTW_w199_chgsph1VersionMismatch Alert Code: GTW_w200_chgsph2VersionMismatch Alert Code: GTW_w201_chgsph3VersionMismatch Alert Code: GTW_w206_parkAssistVersMismatch Alert Code: GTW_w223_tunerDabVersionMismatch Alert Code: GTW_w226_airSuspVersionMismatch Alert Code: GTW_w229_cmpVersionMismatch Alert Code: GTW_w231_pmsVersionMismatch Alert Code: GTW_w241_dasVersionMismatch Alert Code: GTW_w242_dasMia Alert Code: GTW_w246_espCalVersionMismatch Alert Code: GTW_w266_ibstVersionMismatch Alert Code: GTW_w267_ibstCalMismatch Alert Code: GTW_w268_ibstFailure Alert Code: GTW_w272_chgrlyPlatformMismatch Alert Code: GTW_w273_chgrlyVersionMismatch Alert Code: GTW_w277_iBoosterReduced Alert Code: GTW_w290_parkAssistTempFailure Alert Code: GTW_w291_tunerHdVersionMismatch Alert Code: GTW_w299_thBusConfigMismatch Alert Code: GTW_w320_airSuspPlatformMismatch Alert Code: GTW_w321_airSuspVersionMismatch Alert Code: GTW_w343_frunkLatchFailure Alert Code: GTW_w358_unlockRequiredForStart Alert Code: IC_w013_OVERTEMP_OFF Alert Code: MCU_u001_rearSeatbeltUnbuckled Alert Code: MCU_u002_washerFluidLow Alert Code: MCU_u004_EASInJackMode Alert Code: MCU_u005_FrunkOpen Alert Code: MCU_u006_DriverDoorOpen Alert Code: MCU_u007_DoorOpen Alert Code: MCU_u008_DSTEntryLockDisabled Alert Code: MCU_u014_TrunkOpen Alert Code: MCU_u015_notOnPrivateProperty Alert Code: MCU_u017_RegenChanged Alert Code: MCU_w004_TouchScreenError Alert Code: MCU_w005_BrakeFluidLow Alert Code: MCU_w006_displayFirmwareMismatch Alert Code: MCU_w007_MapsMissing Alert Code: MCU_w008_TPMS_globalHardWarn Alert Code: MCU_w009_TPMS_globalOverPresWarn Alert Code: MCU_w010_TPMS_globalSoftWarn Alert Code: MCU_w012_TPMS_systemFault Alert Code: MCU_w013_IncorrectMap Alert Code: MCU_w018_sunroofSpeedWarning Alert Code: MCU_w027_dtcActive Alert Code: SEC_w001_key1BatteryLow Alert Code: SEC_w002_key2BatteryLow Alert Code: SEC_w003_key3BatteryLow Alert Code: TAS_w121_maxDutyFL Alert Code: TAS_w122_maxDutyFR Alert Code: TAS_w123_maxDutyRL Alert Code: TAS_w124_maxDutyRR Alert Code: TAS_w125_maxDutyReservoir Alert Code: TAS_w126_maxDutyExhaust Alert Code: TAS_w127_maxDutyBoost Alert Code: TAS_w128_maxDutyCompressor Alert Code: TAS_w213_yellowWarningLamp Alert Code: TAS_w214_redWarningLamp Alert Code: TAS_w295_targetHeightNotMet Alert Code: THC_u0002_frontDefrostLimited Alert Code: THC_u0003_cabinHVACLimited_HV Alert Code: THC_u0005_cabinHVACLimited_PT Alert Code: THC_w0105_coolantBottleLowLevel

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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