2021 Jeep Wrangler Technical Service Bulletins

1,039 technical service bulletins (TSBs) are on record for the 2021 Jeep Wrangler. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10198462May 25, 2021Equipment. UKG Radio Enhancements This bulletin involves updating the radio software level to 2036.07. Customers may experience one or more of the following:Screen flickering. Carplay audio does not always resume. In addition, the following software enhancements are available:Apple certification enhancements. Google certification enhancements.
• 10198388May 25, 2021Equipment. Radio Reboot Continually
• 10230058May 24, 2021Engine cooling. Customer complains of a MIL-on condition. Upon further inspection, there is a Diagnostic Trouble Code (DTC) P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) set in the PCM.
• 10223446May 24, 2021Engine cooling. Customer complains of a MIL-on condition. Upon further inspection, there is a Diagnostic Trouble Code (DTC) P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) set in the PCM.
• 10223286May 24, 2021Engine cooling. Customer complains of a MIL-on condition. Upon further inspection, there is a Diagnostic Trouble Code (DTC) P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) set in the PCM.
• 10198380May 24, 2021Engine cooling. Customer complains of a MIL-on condition. Upon further inspection, there is a Diagnostic Trouble Code (DTC) P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) set in the PCM.
• 10230138May 22, 2021Back-over prevention (rear camera), Equipment. UGA and UGG Radio Enhancements This bulletin involves inspecting and if required updating the radio software to 2036.08. Customers may experience one or more of the following: Screen flickering. Carplay audio does not always resume. Battery Save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule, it does nothing.
• 10230055May 22, 2021Equipment. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit ?A? Is Active
• 10230054May 22, 2021Equipment. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
• 10223443May 22, 2021Electrical system. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit ?A? Is Active
• 10223442May 22, 2021Equipment. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
• 10223366May 22, 2021Electrical system, Equipment. UGA and UGG Radio Enhancements This bulletin involves inspecting and if required updating the radio software to 2036.08. Customers may experience one or more of the following: Screen flickering. Carplay audio does not always resume. Battery Save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule, it does nothing.
• 10223283May 22, 2021Electrical system. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit ?A? Is Active
• 10223282May 22, 2021Electrical system. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
• 10198460May 22, 2021Equipment. UGA and UGG Radio Enhancements This bulletin involves inspecting and if required updating the radio software to 2036.08. Customers may experience one or more of the following: Screen flickering. Carplay audio does not always resume. Battery Save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule, it does nothing.
• 10198377May 22, 2021Electrical system. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit ?A? Is Active
• 10198376May 22, 2021Electrical system. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
• 10230130May 21, 2021Transmission and drivetrain. Radio Enhancements This bulletin involves updating the radio software level to 2036.06. Customers may experience the following:Product plan UUID is not correct in Carplay®. Carplay audio does not always resume. Battery save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule ? it does nothing. In addition, the following…
• 10230129May 21, 2021Electrical system, Back-over prevention (rear camera). Flash: HVAC Diagnostic and System Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may notice one or more of the following:Intermittent change of smell or humidity level in vehicle. An intermittent blast of warm air when A/C is on. Intermittent increase of outside air through the HVAC system.
• 10223497May 21, 2021Electrical system. Flash: HVAC Diagnostic and System Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may notice one or more of the following:Intermittent change of smell or humidity level in vehicle. An intermittent blast of warm air when A/C is on. Intermittent increase of outside air through the HVAC system.
• 10223358May 21, 2021Electrical system, Equipment. Radio Enhancements This bulletin involves updating the radio software level to 2036.06. Customers may experience the following:Product plan UUID is not correct in Carplay®. Carplay audio does not always resume. Battery save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule ? it does nothing. In addition, the following…
• 10223357May 21, 2021Visibility (wipers, defrost, mirrors), Electrical system. Flash: HVAC Diagnostic and System Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may notice one or more of the following:Intermittent change of smell or humidity level in vehicle. An intermittent blast of warm air when A/C is on. Intermittent increase of outside air through the HVAC system.
• 10198452May 21, 2021Equipment, Electrical system. Radio Enhancements This bulletin involves updating the radio software level to 2036.06. Customers may experience the following:Product plan UUID is not correct in Carplay®. Carplay audio does not always resume. Battery save vs. Battery Charge toggles back to Battery Charge after sleep cycle. When ?Charge Now? is selected on key-off outside of the charging schedule ? it does nothing. In addition, the following…
• 10198451May 21, 2021Visibility (wipers, defrost, mirrors), Electrical system. Flash: HVAC Diagnostic and System Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may notice one or more of the following:Intermittent change of smell or humidity level in vehicle. An intermittent blast of warm air when A/C is on. Intermittent increase of outside air through the HVAC system.
• 10230049May 20, 2021Equipment. PHEV Parameters Are Not Showing Up On Mobile App
• 10223437May 20, 2021Equipment. PHEV Parameters Are Not Showing Up On Mobile App
• 10223277May 20, 2021Electrical system. PHEV Parameters Are Not Showing Up On Mobile App
• 10198371May 20, 2021Electrical system. PHEV Parameters Are Not Showing Up On Mobile App
• 10230048May 19, 2021Equipment. Radio Volume Uncontrollable Or Changing On Its Own
• 10223436May 19, 2021Equipment. Radio Volume Uncontrollable Or Changing On Its Own
• 10223276May 19, 2021Equipment. Radio Volume Uncontrollable Or Changing On Its Own
• 10198370May 19, 2021Equipment. Radio Volume Uncontrollable Or Changing On Its Own
• 10230045May 15, 2021Visibility (wipers, defrost, mirrors). Power Mirrors Are Inoperative
• 10223433May 15, 2021Visibility (wipers, defrost, mirrors). Power Mirrors Are Inoperative
• 10223273May 15, 2021Visibility (wipers, defrost, mirrors). Power Mirrors Are Inoperative
• 10198367May 15, 2021Visibility (wipers, defrost, mirrors). Power Mirrors Are Inoperative
• 10230037May 14, 2021Back-over prevention (rear camera). Max Regeneration Does Not Remain On After Vehicle Is Restarted
• 10223425May 14, 2021Electrical system. Max Regeneration Does Not Remain On After Vehicle Is Restarted
• 10223423May 14, 2021Engine cooling. MIL Lamp On DTC P1CEA BOOST SIDE EVAP PURGE SYSTEM PERFORMANCE
• 10223265May 14, 2021Engine. Max Regeneration Does Not Remain On After Vehicle Is Restarted
• 10223263May 14, 2021Electrical system. MIL Lamp On DTC P1CEA BOOST SIDE EVAP PURGE SYSTEM PERFORMANCE
• 10198359May 14, 2021Electrical system. Max Regeneration Does Not Remain On After Vehicle Is Restarted
• 10198357May 14, 2021Engine cooling. MIL Lamp On DTC P1CEA BOOST SIDE EVAP PURGE SYSTEM PERFORMANCE
• 10230034May 12, 2021Equipment, Fuel system. CEL (Check Engine Lamp) On Shortly After Filling Vehicle
• 10230032May 12, 2021Equipment. Radio Screen Freeze, Blank Screen And Reset
• 10223422May 12, 2021Equipment. CEL (Check Engine Lamp) On Shortly After Filling Vehicle
• 10223420May 12, 2021Equipment. Radio Screen Freeze, Blank Screen And Reset
• 10223262May 12, 2021Engine cooling. CEL (Check Engine Lamp) On Shortly After Filling Vehicle
• 10223260May 12, 2021Equipment. Radio Screen Freeze, Blank Screen And Reset
• 10198356May 12, 2021Engine cooling. CEL (Check Engine Lamp) On Shortly After Filling Vehicle

← All problems reported for the 2021 Jeep Wrangler