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Service bulletins for the 2021 Jeep Grand Cherokee

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.

1325 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
0804322-12023-01-09. Service bulletin. ENGINE AND ENGINE COOLING; VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. Flash: Heating Ventilation and Air Conditioning (HVAC) Updates This bulletin involves reprogramming the HVAC module with the latest available software. Customers may experience the following:High pitch whistle coming from the dash when the blower motor is turned on.High pitch whistle originated from the defroster door when the HVAC unit in either Hi-Level (panel and defrost) or Bi-Level (panel and floor) modes. May be worsened when running the front airflow at blower bar 1-2 and rear airflow at blower bar 5-7.
08050222023-01-09. Service bulletin. FUEL SYSTEM, GASOLINE; SEAT BELTS; VEHICLE SPEED CONTROL; STEERING; ELECTRICAL SYSTEM; STRUCTURE; PARKING BRAKE. Flash: Body Control Module (BCM) Updates This bulletin involves reprogramming the BCM with the latest available software. The customer may experience one or more of the following: Fuel Level and Range (distance to empty) (DTE) will both increase after sleep cycle. Fuel Level % would increase when parked on a slope. Fuel gauge remains at full for 107 km (67 miles) vs. 73 km (45 miles). After fueling up with 68 liters (18.1 gallons) of fuel, the fuel gauge only will read around 1/4 tank and the low fuel lamp is still illuminated. After 10 minutes of driving, the gauge only read around 3/4 tank and the fuel lamp is still on. Refuel button is pressed for a short duration of 500ms or less at key off, then the fuel door is not opened. When the phone is charging on the Wireless Charging Pad Module (WCPM) and the fob is near, the customer opens then closes the liftgate, the IPC will pop up "key fob has left the vehicle" message. On vehicles equipped with Electronic Steering Lock (ESL), it requires 3 Start/Stop button presses to transition from key off to key run when the vehicle was in deep sleep.
0804322-22023-01-09. Service bulletin. ENGINE AND ENGINE COOLING; VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. Flash: Heating Ventilation and Air Conditioning (HVAC) Updates This bulletin involves reprogramming the HVAC module with the latest available software. Customers may experience the following:High pitch whistle coming from the dash when the blower motor is turned on.High pitch whistle originated from the defroster door when the HVAC unit in either Hi-Level (panel and defrost) or Bi-Level (panel and floor) modes. May be worsened when running the front airflow at blower bar 1-2 and rear airflow at blower bar 5-7
S21210000142023-01-09. Service bulletin. ELECTRICAL SYSTEM:ADAS:HILL START ASSIST:CLUTCH SOLENOID. Service 4WD Message Illuminated. Diagnostic Trouble Code (DTC) C1472-92 ? Transfer Case Clutch Control ? Performance or Incorrect Operation.
S21080001772023-01-09. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER:SENSOR/SENDING UNIT. The Odometer Is Flashing / Blinking
S2108000177-12023-01-09. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER. The Odometer Is Flashing / Blinking (Document published to dealers has a February 2022 date indicated incorrectly)
S22080000722023-01-09. Service bulletin. ELECTRICAL SYSTEM. RKE Does Not Work Or Has Short Range, TPM Is Not Reading Tire Pressures Or Remote Start Is Inoperative
S22080000112023-01-09. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ACCESSORY; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. Wireless Qi Charger Not Charging
S17080001182023-01-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Drain Concern, Dual USB Port Normal Operational Draw, Extended Illumination Or Extended Operation After Key Off
S22080000682023-01-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. ?Device Not Supported? Message on the radio screen
S22230000172023-01-09. Service bulletin. ELECTRICAL SYSTEM. FSM Folding Stow Module Replacement Information B235A-00 ECU In Plant Mode
S21080000152023-01-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Uconnect Box Requires Service Message
S21080002052023-01-09. Service bulletin. ELECTRICAL SYSTEM; TRAILER HITCHES. Mopar Trailer Tow Module Kit Sales Incorrect Sales Code And/Or CAN IHS Wiring Incorrect Connector Cavities
08074222022-12-19. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Instrument Panel Cluster Updates
08101222022-12-19. Service bulletin. STEERING; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Electric Power Steering (EPS) Updates This bulletin involves reprogramming the EPS with the latest available software. Customers may experience the following after exiting flat tow mode: The vehicle will not have EPS assist. After exiting Flat Tow Mode by switching the transfer case out of neutral, but not perform an ignition cycle, the vehicle will have no power steering assist. Power steering will come back after an ignition cycle.
S22240000052022-12-19. Service bulletin. ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; UNKNOWN OR OTHER. Front HVAC Vents Default To Defrost, Driver Side Only Blows Cold.
S22020000042022-12-19. Service bulletin. ELECTRICAL SYSTEM; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); SUSPENSION. WL Air Suspension Control Module ASCM Service flash is for new part replacements ONLY
90045262022-12-19. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. COMPRESSOR, Air Conditioning HVAC not blowing cold air, or does not work as designed. Please ensure the HVAC control module is at the latest software level prior to replacing the compressor as per Star Online publication S2224000003. Any questions, or concerns please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Software is available for 21MY per TSB 08-043-22 Rev. B and for 22MY per CSN Z33.
90045162022-12-19. Service bulletin. ELECTRICAL SYSTEM:SEAT HEATER:MAT. ELEMENT, Heated Seat, Seat Back (2nd row) Before deciding to replace the heater mat, please check heater mat resistances at the pigtail: - Between pin 1-4: (3.07 to 3.75 Ohms) - Between pin 2-3: (9kOhms - 11 kOhm) Also, check heater mat connection to seat harness. For WL (Grand Cherokee L and Grand Cherokee) equipped with this heater mat that require replacement. DO NOT tear off the heater mat from the foam cushion, instead the whole foam-heater mat assembly must be replaced. Please send back heater mat to Quality team at Stellantis. In case of questions please contact: FCA Redacted Content
90045082022-12-19. Service bulletin. ELECTRICAL SYSTEM:SEAT HEATER:MAT. ELEMENT, Heated Seat, Seat Cushion Before deciding to replace the heater mat, please check heater mat resistances at the pigtail: - Between pin 1-4: (2.03 to 2.49 Ohms) - Between pin 2-3: (9kOhms - 11 kOhm) Also, check heater mat connection to seat harness. For WL (Grand Cherokee L and Grand Cherokee) equipped with this heater mat that require replacement. DO NOT tear off the heater mat from the foam cushion, instead the whole foam-heater mat assembly must be replaced. Please send back heater mat to Quality team at Stellantis. In case of questions please contact: FCA Redacted Content
90044212022-12-19. Service bulletin. ELECTRICAL SYSTEM:SEAT HEATER:MAT. ELEMENT, Heated Seat Before deciding to replace the heater mat, please check heater mat resistances at the pigtail: - Between pin 1-4: (1.63 to 1.99 Ohms) - Between pin 2-3: (9kOhms - 11 kOhm) Also, check heater mat connection to seat harness. For WL (Grand Cherokee L and Grand Cherokee) equipped with this heater mat that require replacement. DO NOT tear off the heater mat from the foam cushion, instead the whole foam-heater mat assembly must be replaced. Please send back heater mat to Quality team at Stellantis. In case of questions please contact: FCA Redacted Content
0805022REVB2022-12-12. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; STEERING. Flash: Body Control Module (BCM) Updates This bulletin involves reprogramming the Body Control Module (BCM) with the latest available software. Customer may describe various LIN related functions (steering wheel, center stack, terrain or 4WD) switches and/or certain interior lamps not working. Upon further inspection the technician may also observe the followingDTCs may have set without a MIL: U1223-00 - Lost Communication with Wireless Charging Pad Module. U121E-00 - Lost Communication With Steering Wheel Cruise Control Switch. U1207-00 - Lost Communication With Terrain Switch Bank Module. U1191-00 - Lost Communication with Switch Bank Module 2. U1153-00 - Lost Communication With Windshield Wiper Smart Module. U114F-00 - Lost Communication with LIN Overhead Console. U114D-87 - Lost Communication with Hands Free Liftgate Module-Missing Message. U113B-00 - Lost Communication With Switch Bank Module. U112D-00 - Lost Communication With EVIC Steering Wheel Switches. U1125-00 - Lost Communication With LIN ECU 5- (Ride Height Switch Module). U1123-00 - Lost Communication With LIN ECU 3- (Switch Bank Module Rear Right). U1122-00 - Lost Communication With LIN ECU 2- (Switch Bank Module Rear Left). U1008-00 - LIN 1 Bus Steering Column Control Module Electrical Diagnostic. U0231-00 - Lost Communication With Rain Sensing Module. In addition, the customer may experience one or more of the following:Fuel Level and Range (distance to empty) (DTE) will both increase after sleep cycle. Fuel Level % would increase when parked on a slope. Fuel gauge remains at full for 107 km (67 miles) vs. 73 km (45 miles). After fueling up with 68 liters (18.1 gallons) of fuel, the fuel gauge only will read around 1/4 tank and the low fuel lamp is still illuminated. After 10 minutes of driving, the gauge only read around 3/4 tank and the fuel lamp is still on. Refuel button is pressed for a short duration of 500ms or less at
08183222022-12-12. Service bulletin. ELECTRICAL SYSTEM. Flash: Telematics Box Module (TBM) Updates This bulletin involves updating the TBM with the latest software. Customers may experience the following: Message displayed on the radio screen, "Uconnect Box requires service. Pleasevisit an authorized dealer.", with no active or stored Diagnostic Trouble Codes (DTCs) set by TBM or Occupant Restraint Controller (ORC).Error MessageUconnect box ?requires service? message can be triggered by different reasons. For an issueon a new vehicle recently switched to customer mode, please follow the New Vehicle Preparation procedure to resolve Uconnect box requireservice message. Always fix TBM / ORC DTC issues first. If the issue could not be fixed, then reflash the TBM software. Mobile app remote start or remote lock/unlock works improperly. Mobile apps in vehicle data missing: fuel level, tire pressure, odometerand oil life. Vehicle Health Report data missing in email. Remote operation inoperative. Wi-Fi unavailable. Issues logging in and enabling Wi-Fi. SOS calls unavailable.
S228A0000282022-12-12. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Remained On After Ignition Is Switched Off, Dead Battery from Excessive Radio Current Draw
91000952022-12-12. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; WHEELS. Alternator Assy Prior to alternator removal: 1. Inspect & check all electrical connections to the alternator a. 2-way connector containing field control circuit & alternator sense voltage circuit. b. Unplug & plug-in the 2-way connector for field & sense circuit. Verify the connection is tight & check for any bent pins in alternator connector or damage to female terminals in connector. c. Check Alternator B+ Stud connection to be sure nut is securing positive cable terminal properly (i.e. nut is clamping terminal & connection is tight). d. Check fuse between the alternator B+ stud & PDC terminal to make sure it is not blown. e. Be sure to follow service manual sections on ALTERNATOR CONTROL CIRCUIT DIAGNOSTIC & ALTERNATOR SENSE CIRCUIT DIAGNOSTIC looking for any opens & shorts (to ground or battery voltage). 2. Check/verify all grounds in the charging circuit a. Check tightness of mounting bolts securing alternator to engine block. Alternator is a case ground component. b. Check main ground from engine to chassis; connection must be tight. c. Check battery ground cable connections are tight. d. Potentially, loosen alternator mounting bolts, without removing alternator, and re-tighten to torque specifications in service manual. e. After all steps above are complete, re-start engine & check charging system operation. 3. Verify that the Smart Charging System is not the reason for alternator low voltage & current output (Amps). a. Alternator charging can be suspended during engine idle operation because of the Smart Charge strategy. b. Refer to service manual section "System Operation - Smart Charging System". c. Refer to Star Case S2008000031 Rev A for low charging voltage & Smart Charge Mode Voltage Range diagram & mode descriptions. d. The alternator has no internal regulator; thus, has no smart circuitry. All alternator control signals come from ECM. 4. If alternator is faulty, remove alternator & mounting bolts. Return alternator with bolts to QEC for analysis.

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