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2018 Sahara JLU heated seat stopped working

deborahbarth

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Deborah
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2018 Sahara JLU
Sorry if this is in the wrong thread.
Driving home last night I had both driver and passenger heated seats on and heated steering wheel. All of a sudden as I'm driving, my driver's heated seat turns off. Passenger seat and steering wheel still running fine. I pushed the button, it stays on for about 2 seconds then flips off. Cannot get it to stay on. Is this a fuse issue? Any help would be much appreciated!! TIA
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Rhinebeck01

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@deborahbarth

Fuse F57 , a yellow 20 amp fuse in the power distribution center is the fuse for the driver's seat heat.

Probably a starting point would be to check / replace fuse F57.

If you look at the underside of the power distribution center's cover, you will see printed there, a diagram showing what fuse # is what in the power distribution center...

By the way, if you want..... as a test...... just switch fuse F57 with F58 (both are 20 amp yellow) which is the fuse for the passenger seat. IF, after doing that, the passenger seat no longer heats but the driver's side now heats, you know that you are dealing with a bad/blown 20 amp fuse.

Chances are it is not a fuse but ya never know. Always start at the simplest when trouble shooting ... so start with the fuse..

JL Fuses:
F01 Spare
F02 Starter 40 Amp Green Cartridge
F03 IBS 5 Amp Tan Micro
F04 Fuel Pump MTR/FPCM 20 Amp Yellow Micro
F05 Security Gateway 5 Amp Tan Micro
F06 Spare
F07 LTR Cool Pump β€” If Equipped 15 Amp Blue Micro
F08 TCM-8HP CYGNUS 15 Amp Blue Micro
F09 Spare
F10 KIN/RF HUB/ESCL 15 Amp Blue Micro
F11 UCI Port (USB & AUX) 10 Amp Red Micro
F12 HIFI Ampliftier 25 Amp Clear Micro
F13 Spare
F14 Spare
F15 IPC/SWITCH BANK-HD ELEC 15 Amp Blue Micro
F16 Spare
F17 Spare
F18 AC CLUTCH 10 Amp Red Micro
F19 Spare
F20 CBC 1-INTERIOR LIGHTS 30 Amp Pink Cartridge
F21 REAR WIPER 20 Amp Yellow Micro
F22 ECM/PCM/MGU WAKE UP/PPU WAKE UP 10 Amp Red Micro
F23 PCM/ECM 10 Amp Red Micro
F24 Spare
F25 MOD_SBW 10 Amp Red Micro
F26 CBC 2-EXTERIOR LIGHTS #1 40 Amp Green Cartridge
F27 Front Wipers 30 Amp Pink Cartridge
F28 CBC 3-POWER LOCKS 40 Amp Green Cartridge
F29 CBC 4-EXTERIOR LIGHTS #2 40 Amp Green Cartridge
F30 Spare
F31 DIAGNOSTIC PORT 10 Amp Red Micro
F32 HVAC CTRL MOD/SCL/OCM/DPDM 10 Amp Red Micro
F33 PTS/IRCM/AIRBAG DISABLE LMPS 10 Amp Red Micro
F34 ESC/EHPS/SBCM WAKE UP 10 Amp Red Micro
F35 BRAKE VAC PMP β€” If Equipped 30 Amp Pink Cartridge
F36 TRLR TOW MOD β€” If Equipped 30 Amp Pink Cartridge
F37 TRLR TOW CONN 7W β€” If Equipped 30 Amp Pink Cartridge
F38 ECM 20 Amp Blue Cartridge
F39 Spare
F40 DTCM/AXLE LOCK FT_RR 15 Amp Blue Micro
F41 IC/SGW WAKE UP 15 Amp Blue Micro
F42 PCR CTRL FEED (ESS)/SPARE (BSG) β€” If Equipped 10 Amp Red Micro
F43 PWR OUTLET (CARGO) BATT 20 Amp Yellow Micro
F44 IRCAM HEATERS 10 Amp Red Micro
F45 PWR OUTLET (CARGO) IGN* 20 Amp Yellow Micro
F46 AUTO HDLP LVL MOD/LVL MTR/HDLP SW 10 Amp Red Micro
F47 Spare
F48 Spare
F49 ORC 10 Amp Red Micro
F50 HD ACC β€” If Equipped 10 Amp Red Micro
F51 DSRC/USB/ISRVM/CSGM 10 Amp Red Micro
F52 CIGAR LTR 20 Amp Yellow Micro
F53 Spare
F54 Spare
F55 Spare
F56 IN-CAR TEMP SENSOR 10 Amp Red Micro
F57 Frt Drvr Htd Seat 20 Amp Yellow Micro
F58 Frt Pass Htd Seat 20 Amp Yellow Micro

F59 Spare
F60 CSWM (HTD STR WHEEL) 15 Amp Blue Micro
F61 LBSS/RBSS 10 Amp Red Micro
F62 Spare
F63 ORC 10 Amp Red Micro
F64 Spare
F65 Spare
F66 HVAC BLOWER MTR FRT 40 Amp Green Cartridge
F67 Spare
F68 Spare
F69 MGU (BSG) β€” If Equipped 5 Amp Tan Micro
F70 INJ/IGN COIL (GAS)/GLO PLUG MOD (DSL) 25 Amp Clear Micro
F71 Spare
F72 HD ELEC ACC PKG β€” If Equipped 10 Amp Red Micro
F73 PWR TOP LT 20 Amp Blue Cartridge
F74 PWR TOP RT 20 Amp Blue Cartridge
F75 PPU-BPCM & APM (BSG) β€” If Equipped 10 Amp Red Micro
F76 ECM (GAS)/PCM (DSL) 20 Amp Yellow Micro
F77 HTD MIRRORS 10 Amp Red Micro
F78 COMP/INTRUSION/SIREN/INTRUSION SNSRS 10 Amp Red Micro
F79 SMART BAR CTRL MOD 20 Amp Yellow Micro
F80 PCM 15 Amp Blue Micro
F81 REAR DEFROSTER (EBL) 30 Amp Pink Cartridge
F82 FUEL HTR β€” If Equipped 30 Amp Pink Cartridge
F83 GLOW PLUG β€” If Equipped 60 Amp Yellow Cartridge
F84 UREA HTR CTRL UNIT β€” If Equipped 30 Amp Pink Cartridge
F85 PM SENSOR β€” If Equipped 10 Amp Red Micro
F86 BRAKE VAC PMP 2 β€” If Equipped 30 Amp Pink Cartridge
F87 SUPPLY/PURGING PMP β€” If Equipped 10 Amp Red Micro
F88 NOx SENSOR #1/ #2 β€” IF Equipped 20 Amp Blue Cartridge
F89 SCCM/CRUISE CTL/DTV 10 Amp Red Micro
F90 TRLR TOW PARK LMP β€” If Equipped 20 Amp Blue Cartridge
F91 HORN 20 Amp Yellow Micro
F92 HD ACCY #2 β€” If Equipped 40 Amp Green Cartridge
F93 HD ACCY #1 β€” If Equipped 40 Amp Green Cartridge
F94 TPM/CORAX 10 Amp Red Micro
F95 Spare
F96 PWR MIRROR SW 10 Amp Red Micro
F97 RADIO/TBM 20 Amp Yellow Micro
F98 SW BANK-HD ELEC/OFF ROAD 10 Amp Red Micro
F99 Spare
F100 ESC-ECU & VALVES 30 Amp Pink Cartridge
F101 DTCM 30 Amp Pink Cartridge
F102 DUAL USB PORT 15 Amp Blue Micro
F103 HD ACCY #3 β€” If Equipped 15 Amp Blue Micro
F104 PPU COOL PUMP β€” If Equipped 15 Amp Blue Micro
F105 ICS/HVAC 10 Amp Red Micro
F106 ESC-PUMP MTR 40 Amp Green Cartridge
F107 TRLR TOW STOP/TURN LT β€” If Equipped 20 Amp Yellow Micro
F108 HD ACCY #4 β€” If Equipped 15 Amp Blue Micro
F109 TRLR TOW STOP/TURN RT β€” If Equipped 20 Amp Yellow Micro
F110 POWER INVERTER 30 Amp Pink Cartridge
F111 TRLR TOW BACKUP β€” If Equipped 20 Amp Blue Cartridge




.
 
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deborahbarth

deborahbarth

New Member
First Name
Deborah
Joined
Aug 30, 2021
Threads
1
Messages
2
Reaction score
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Location
Alabama
Vehicle(s)
2018 Sahara JLU
@deborahbarth

Fuse F57 , a yellow 20 amp fuse in the power distribution center is the fuse for the driver's seat heat.

Probably a starting point would be to check / replace fuse F57.

If you look at the underside of the power distribution center's cover, you will see printed there, a diagram showing what fuse # is what in the power distribution center...

By the way, if you want..... as a test...... just switch fuse F57 with F58 (both are 20 amp yellow) which is the fuse for the passenger seat. IF, after doing that, the passenger seat no longer heats but the driver's side now heats, you know that you are dealing with a bad/blown 20 amp fuse.

Chances are it is not a fuse but ya never know. Always start at the simplest when trouble shooting ... so start with the fuse..

JL Fuses:
F01 Spare
F02 Starter 40 Amp Green Cartridge
F03 IBS 5 Amp Tan Micro
F04 Fuel Pump MTR/FPCM 20 Amp Yellow Micro
F05 Security Gateway 5 Amp Tan Micro
F06 Spare
F07 LTR Cool Pump β€” If Equipped 15 Amp Blue Micro
F08 TCM-8HP CYGNUS 15 Amp Blue Micro
F09 Spare
F10 KIN/RF HUB/ESCL 15 Amp Blue Micro
F11 UCI Port (USB & AUX) 10 Amp Red Micro
F12 HIFI Ampliftier 25 Amp Clear Micro
F13 Spare
F14 Spare
F15 IPC/SWITCH BANK-HD ELEC 15 Amp Blue Micro
F16 Spare
F17 Spare
F18 AC CLUTCH 10 Amp Red Micro
F19 Spare
F20 CBC 1-INTERIOR LIGHTS 30 Amp Pink Cartridge
F21 REAR WIPER 20 Amp Yellow Micro
F22 ECM/PCM/MGU WAKE UP/PPU WAKE UP 10 Amp Red Micro
F23 PCM/ECM 10 Amp Red Micro
F24 Spare
F25 MOD_SBW 10 Amp Red Micro
F26 CBC 2-EXTERIOR LIGHTS #1 40 Amp Green Cartridge
F27 Front Wipers 30 Amp Pink Cartridge
F28 CBC 3-POWER LOCKS 40 Amp Green Cartridge
F29 CBC 4-EXTERIOR LIGHTS #2 40 Amp Green Cartridge
F30 Spare
F31 DIAGNOSTIC PORT 10 Amp Red Micro
F32 HVAC CTRL MOD/SCL/OCM/DPDM 10 Amp Red Micro
F33 PTS/IRCM/AIRBAG DISABLE LMPS 10 Amp Red Micro
F34 ESC/EHPS/SBCM WAKE UP 10 Amp Red Micro
F35 BRAKE VAC PMP β€” If Equipped 30 Amp Pink Cartridge
F36 TRLR TOW MOD β€” If Equipped 30 Amp Pink Cartridge
F37 TRLR TOW CONN 7W β€” If Equipped 30 Amp Pink Cartridge
F38 ECM 20 Amp Blue Cartridge
F39 Spare
F40 DTCM/AXLE LOCK FT_RR 15 Amp Blue Micro
F41 IC/SGW WAKE UP 15 Amp Blue Micro
F42 PCR CTRL FEED (ESS)/SPARE (BSG) β€” If Equipped 10 Amp Red Micro
F43 PWR OUTLET (CARGO) BATT 20 Amp Yellow Micro
F44 IRCAM HEATERS 10 Amp Red Micro
F45 PWR OUTLET (CARGO) IGN* 20 Amp Yellow Micro
F46 AUTO HDLP LVL MOD/LVL MTR/HDLP SW 10 Amp Red Micro
F47 Spare
F48 Spare
F49 ORC 10 Amp Red Micro
F50 HD ACC β€” If Equipped 10 Amp Red Micro
F51 DSRC/USB/ISRVM/CSGM 10 Amp Red Micro
F52 CIGAR LTR 20 Amp Yellow Micro
F53 Spare
F54 Spare
F55 Spare
F56 IN-CAR TEMP SENSOR 10 Amp Red Micro
F57 Frt Drvr Htd Seat 20 Amp Yellow Micro
F58 Frt Pass Htd Seat 20 Amp Yellow Micro

F59 Spare
F60 CSWM (HTD STR WHEEL) 15 Amp Blue Micro
F61 LBSS/RBSS 10 Amp Red Micro
F62 Spare
F63 ORC 10 Amp Red Micro
F64 Spare
F65 Spare
F66 HVAC BLOWER MTR FRT 40 Amp Green Cartridge
F67 Spare
F68 Spare
F69 MGU (BSG) β€” If Equipped 5 Amp Tan Micro
F70 INJ/IGN COIL (GAS)/GLO PLUG MOD (DSL) 25 Amp Clear Micro
F71 Spare
F72 HD ELEC ACC PKG β€” If Equipped 10 Amp Red Micro
F73 PWR TOP LT 20 Amp Blue Cartridge
F74 PWR TOP RT 20 Amp Blue Cartridge
F75 PPU-BPCM & APM (BSG) β€” If Equipped 10 Amp Red Micro
F76 ECM (GAS)/PCM (DSL) 20 Amp Yellow Micro
F77 HTD MIRRORS 10 Amp Red Micro
F78 COMP/INTRUSION/SIREN/INTRUSION SNSRS 10 Amp Red Micro
F79 SMART BAR CTRL MOD 20 Amp Yellow Micro
F80 PCM 15 Amp Blue Micro
F81 REAR DEFROSTER (EBL) 30 Amp Pink Cartridge
F82 FUEL HTR β€” If Equipped 30 Amp Pink Cartridge
F83 GLOW PLUG β€” If Equipped 60 Amp Yellow Cartridge
F84 UREA HTR CTRL UNIT β€” If Equipped 30 Amp Pink Cartridge
F85 PM SENSOR β€” If Equipped 10 Amp Red Micro
F86 BRAKE VAC PMP 2 β€” If Equipped 30 Amp Pink Cartridge
F87 SUPPLY/PURGING PMP β€” If Equipped 10 Amp Red Micro
F88 NOx SENSOR #1/ #2 β€” IF Equipped 20 Amp Blue Cartridge
F89 SCCM/CRUISE CTL/DTV 10 Amp Red Micro
F90 TRLR TOW PARK LMP β€” If Equipped 20 Amp Blue Cartridge
F91 HORN 20 Amp Yellow Micro
F92 HD ACCY #2 β€” If Equipped 40 Amp Green Cartridge
F93 HD ACCY #1 β€” If Equipped 40 Amp Green Cartridge
F94 TPM/CORAX 10 Amp Red Micro
F95 Spare
F96 PWR MIRROR SW 10 Amp Red Micro
F97 RADIO/TBM 20 Amp Yellow Micro
F98 SW BANK-HD ELEC/OFF ROAD 10 Amp Red Micro
F99 Spare
F100 ESC-ECU & VALVES 30 Amp Pink Cartridge
F101 DTCM 30 Amp Pink Cartridge
F102 DUAL USB PORT 15 Amp Blue Micro
F103 HD ACCY #3 β€” If Equipped 15 Amp Blue Micro
F104 PPU COOL PUMP β€” If Equipped 15 Amp Blue Micro
F105 ICS/HVAC 10 Amp Red Micro
F106 ESC-PUMP MTR 40 Amp Green Cartridge
F107 TRLR TOW STOP/TURN LT β€” If Equipped 20 Amp Yellow Micro
F108 HD ACCY #4 β€” If Equipped 15 Amp Blue Micro
F109 TRLR TOW STOP/TURN RT β€” If Equipped 20 Amp Yellow Micro
F110 POWER INVERTER 30 Amp Pink Cartridge
F111 TRLR TOW BACKUP β€” If Equipped 20 Amp Blue Cartridge




.
Thank you so much! Got in it today and turned it on and it stayed on. Smh I'll definitely keep this info for when it does it again, cause you know it will. Appreciate all the details!!!
 

Rhinebeck01

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Joined
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'18 JL Rubi, '22 Prevost M H3-45,'01 Harley FatBoy
@deborahbarth

Do, go to the power distribution center and push firmly down on all fuses in there.

Possibilly your F57 fuse is not pushed down enough... Just take the cover off of the power distribution center and press firmly down on everything there..
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