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Service bulletins for the 2019 Jeep Wrangler

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

836 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
18-022-202020-05-18. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:P06EF - Engine Restart Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0128 - Thermostat Rationality. P0507 - Idle Speed Performance Higher Than Expected. Customers may also describe the following condition:Excessive radiator fan noise when the A/C is on MAX output. In addition, the following software enhancements are available:Electric Vacuum Pump (EVP) update. Fan noise reduction.
S20250000022020-05-18. Service bulletin. ELECTRICAL SYSTEM. Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
S20080000162020-05-18. Service bulletin. ELECTRICAL SYSTEM. 4WD Lamp On, Service 4WD System, DTC C147B-14 Front Axle Disconnect Sensor-Circuit Short To Ground Or Open
18-021-202020-04-27. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:P06EF - Engine Restart Performance. P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).
18-022-202020-04-27. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:P06EF - Engine Restart Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0128 - Thermostat Rationality. P0507 - Idle Speed Performance Higher Than Expected. Customers may also describe the following condition:Excessive radiator fan noise when the A/C is on MAX output. In addition, the following software enhancements are available:Electric Vacuum Pump (EVP) update. Fan noise reduction.
S20250000022020-04-27. Service bulletin. ELECTRICAL SYSTEM; AIR BAGS. Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
S20080000162020-04-27. Service bulletin. ELECTRICAL SYSTEM. 4WD Lamp On, Service 4WD System, DTC C147B-14 Front Axle Disconnect Sensor-Circuit Short To Ground Or Open
08-013-202020-04-06. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER; ELECTRICAL SYSTEM. Body Control Module (BCM) Reconfigure for Enabling the Auto-On Comfort Settings This bulletin involves reconfiguring the BCM and possibly a radio reset, to enable the auto-on comfort settings. Customers may comment on one or more of the following:If below 4 °C (40 °F), the heated seats or heated steering wheel turn on by themselves. If above 26 °C (80 °F), the vented seats turn on by themselves. Cannot turn off the auto-on comfort feature. With the symptom/condition listed above, there?s no setting in the radio to turn the auto-on comfort feature off.
S20080000132020-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Key Programming, Security Pin Request, Pin Invalid
S20080000122020-04-06. Service bulletin. LANE DEPARTURE; BACK OVER PREVENTION; ELECTRICAL SYSTEM. Rear Park Assist Warning Chime, Rear Park Sense Unavailable Wipe Sensor Message While Backing Up No Object Present
S18050000062020-04-06. Service bulletin. ELECTRICAL SYSTEM. ESC Light Illuminated. DTC C1252-92 VACUUM PUMP CONTROL CIRCUIT And Or P258B ELECTRONIC VACUUM PUMP PERFORMANCE
18-012-19 REV. E2020-01-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set: P04FC - Crankcase Ventilation System Performance. P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).
21-026-19 REV. A2020-01-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following (DTC) has been set:P1614-00 - ECU Reset-Recovery Occurred. Customers may also experience excessive gear shifting above 120 kph (75 mph) at highway speeds.
08-118-19 REV. A2019-12-16. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; LANE DEPARTURE. Flash: Driver Assistance System Module (DASM) Enhancements This bulletin involves reprogramming the DASM with the latest software available. The customer may describe one or more of the following:Brakes may intermittently apply unexpectedly together with Instrument Panel Cluster (IPC) warnings. IPC warnings for the Forward Collision Warning (FCW) informing the driver to apply the brakes.
08-118-192019-12-16. Service bulletin. LANE DEPARTURE; ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE. Flash: Driver Assistance System Module (DASM) Enhancements This bulletin involves reprogramming the DASM with the latest software available. The customer may describe one or more of the following:Brakes may intermittently apply unexpectedly together with Instrument Panel Cluster (IPC) warnings. IPC warnings for the Forward Collision Warning (FCW) informing the driver to apply the brakes.
25-001-192019-12-16. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM. Instrument Panel Cluster (IPC) Message about Diesel Particulate Filter (DPF) Regeneration
90040662019-12-16. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM. WIRING KIT, Enclosure (Mopar JL hard top conversion accessory kit) The HVAC control panel requires replacement when GTP sales code is present to restore rear defrost function. The switch is not provided in this kit and a service replacement part must be ordered. See service information procedure for switch replacement and below chart for replacement part numbers. vehicle has GTP+BNH+HAA replace HVAC control with pn 6BE36TRMAC vehicle has GTP+BNH-HAA replace HVAC control with pn 6BE37TRMAC vehicle has GTP+HAA-BNH replace HVAC control with pn 6BE40TRMAC vehicle has GTP-HAA-BNH replace HVAC control with pn 6BE41TRMAC Please ensure that the proper color code is used in place of the part TRM designation. For any questions call John Altsman at (248) 512-9361.
18-012-19 REV. D2019-12-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set: P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak. P0128 - Thermostat Rationality. The following software enhancement is included: Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following:Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).
08-003-19 REV.C2019-10-28. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM; EQUIPMENT. Radio and Back-up Camera Enhancements This bulletin involves updating the radio software level to 1848.24. Customers may experience one or more of the following: Green horizontal lines on back up display, in reverse (If this is the customer concern use camera LOP 18-60-02-W2, on DT and JL vehicles only). Ghost Touch, features, modes and App?s changing without drivers input. Speaker pop noise when using Bluetooth device. When vehicle is first start the radio will reset and the time display shows 12:00. Audio distortion and volume fluctuation. Blank rear camera image in reverse (If this is the customer concern use camera LOP 18-60-02-W2, on DT and JL vehicles only). Audio distortion (KL vehicles). Audio cutting in and out during memory recall. Ring tone too loud. AM/FM volume fluctuates. While in CarPlay® or Android Auto Google® maps showing wrong location. Phone disconnected after first call. Black screen or White screen with vertical lines. Personal Identification Number (PIN) clears and volume locked while KeySense is used. Audio static while in SXM/SAT modes. Echo heard during Bluetooth phone calls. The radio is locked up. The radio remains on after ignition has been turned off. The radio resets. The radio screen turns black. Intermittently requires an anti-theft code to be entered. Software update also includes software enhancement. SXM sound and behavior improvements.
08-003-19 REV. B2019-10-28. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. Radio and Back-up Camera Enhancements This bulletin involves updating the radio software level to 1848.24. Customers may experience one or more of the following:Green horizontal lines on back up display, in reverse (If this is the customer concern use camera LOP 18-60-02-W2, on DT and JL vehicles only). Ghost Touch, features, modes and App?s changing without drivers input. Speaker pop noise when using Bluetooth device. When vehicle is first start the radio will reset and the time display shows 12:00. Audio distortion and volume fluctuation. Blank rear camera image in reverse (If this is the customer concern use camera LOP 18-60-02-W2, on DT and JL vehicles only). Audio distortion (KL vehicles). Audio cutting in and out during memory recall. Ring tone too loud. AM/FM volume fluctuates. While in CarPlay® or Android Auto Google® maps showing wrong location. Phone disconnected after first call. Black screen or White screen with vertical lines. Personal Identification Number (PIN) clears and volume locked while KeySense is used. Audio static while in SXM/SAT modes. Echo heard during Bluetooth phone calls. The radio is locked up. The radio remains on after ignition has been turned off. The radio resets. The radio screen turns black. Intermittently requires an anti-theft code to be entered. Software update also includes software enhancement.SXM sound and behavior improvements.
18-012-19 REV. C2019-10-28. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak. P0128 - Thermostat Rationality. The following software enhancement is included:Enable Soot Retention for vehicles equipped with Gasoline Particulate Filter (GPF). Customer or technician may also experience the following: Unable to read data information from the OBD II connector when using a generic scan tool(APAC Only).
18-037-19 REV. A2019-10-28. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs: P050B - Cold Start Ignition Timing Performance. P0456 - EVAP System Small Leak. P0128 - Thermostat Rationality. P0507 - Idle Speed Performance Higher Than Expected. Customers may also describe the following condition: Excessive radiator fan noise when the A/C is on MAX output. In addition, the following software enhancements are available:Electric Vacuum Pump (EVP) update. Fan noise reduction.
90041122019-10-28. Service bulletin. ELECTRICAL SYSTEM. Idle Related Components For concern of P0507 diagnostic trouble code, please verify the powertrain control module is at the latest software level prior to replacing any components related to P0507 diagnostics.
18-045-192019-07-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC).P249E-00 - Closed Loop Reductant Injection Control At Limit - Flow Too High.
21-026-192019-07-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience excessive gear shifting above 120 kph (75 mph) at highway speeds.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.