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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

Bulletins, newest first
90043942023-01-17. Service bulletin. ELECTRICAL SYSTEM. Oil Drain Plug If you are replacing the oil drain plug for an oil seep condition, please replace with P/N 06506214AA.
09007212023-01-17. Service bulletin. ENGINE AND ENGINE COOLING. 6.2L Engine Oil Temperature Sensor Leak This bulletin involves re-torquing the oil temperature sensor to specification. Customers may notice a slight oil leak from under the vehicle near the oil temperature sensor location
08090212023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL; BACK OVER PREVENTION:SOFTWARE. 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.
08088212023-01-17. Service bulletin. POWER TRAIN. 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 enhancements are included:Update power supply source from 1 amp to 2.1 amps. GOOGLE® certification enhancements - screen flickers
08074212023-01-17. Service bulletin. WHEELS; SEAT BELTS; STEERING. UGQ, UGV, UJV and UJQ Radio Enhancements This bulletin involves inspecting the software level to see if the radio needs oneor two USB flash drive(s) to update the radio software level to 39.2. Customers may experience one or more of the following: Voice recognition (VR) fails while road names are written in Catalan. After the update to software level MR-28.31, the Amperometer inside Jeepskills shows values too high. The radio may lose some or all programmed presets. Volume blocked/uncontrollable. Heating Steering wheel and seat SK greyed out. Eco Drive trips saved issue. Radio may reset, turn itself off and then back on again. Radio display screen lock up. Park assist chime will continue to chime after the vehicle is turned off. Frequent pop-ups during startup saying device not connected - Uconnect LIVE. Radio will display the incorrect speed limit in kph when approaching a roadspeed camera(2018 WK Only). Uconnect Live Apps restricted to only MyCar, ecoDrive and Jeep Skills(2018 WK Only). Russian language missing in the radio setting menu(2018 WK with UGQ Only). If the radio is set for Russian language, UConnect displays unknown symbolson the ?Off Road Page?(2018 WK with UGQ Only). Could not disable the feature for the heated seat and heated steering wheelturned on automatically at startup(2018 WK with UGQ Only). In addition the following enhancements are included: Navigation improvements. Bluetooth improvements. VR improvements. Russian language enhancements (2018 WK with UGQ Only)
08075212023-01-17. Service bulletin. EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS. Flash: Amplifier (AMP) Diagnostic and System Updates This bulletin involves reprogramming the AMP with the latest available software. The following software enhancement is available: Amplifier update to eliminate static noise from the instrument panel mounted speakers.
S2123000035-12023-01-17. Service bulletin. ENGINE AND ENGINE COOLING. B1F2A-77, B1F29-77, B1F28-77, B1F2B-77 3rd Row Seat Recline Motor DTC ?s
S2108000127-12023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Reboot Continually
S21080001312023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL. One Or More Passive Entry Antenna General Electric Failure DTC?s Found In The RFH
S21080001292023-01-17. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ELECTRICAL SYSTEM. The Ignition State Does Not Change When The Start/Stop Button Is Pressed
S21240000102023-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Blower Motor Noisy When Running System On Max. Blower Changes Speeds Without Customer Input.
S21240000092023-01-17. Service bulletin. BACK OVER PREVENTION. Whistle Noise Heard When Operating AC
S21240000082023-01-17. Service bulletin. BACK OVER PREVENTION. Poor Airflow From 2nd Or 3rd Row Vent Outlets
S21080001282023-01-17. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES. C151D-00 Tire Pressure Sensor Location Undetermined DTC set
S21080001272023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Reboot Continually
S21230000392023-01-17. Service bulletin. STRUCTURE; VEHICLE SPEED CONTROL; BACK OVER PREVENTION. Click Pop Snap Noise From Door Area On Rough Roads Or Body Twist
S21230000382023-01-17. Service bulletin. STRUCTURE. Click Snap Noises Opening Or Closing Door
S21230000372023-01-17. Service bulletin. STRUCTURE; STRUCTURE:BODY:ROOF AND PILLARS. Dual Pane Sunroof Sunshade Noisy When Operating
S21230000362023-01-17. Service bulletin. STRUCTURE; STRUCTURE:BODY:ROOF AND PILLARS. Dual Pane Sunroof Glass False Reversing When Closing
S21080001252023-01-17. Service bulletin. STRUCTURE; EQUIPMENT:ELECTRICAL. Battery Of Uconnect Box Is Temporarily Low Popup Message
S21180000092023-01-17. Service bulletin. ENGINE AND ENGINE 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.
S21080001232023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL. Stored U0080-00 DTC Code Ethernet Bus 1 Fault Set By SGW
S21080001192023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL. Apple CarPlay Malfunctioning, Does Not Launch Or Is Cutting In An Out On Wired And Wireless Connection, Radio Stuck When IPhone Is Connected
S20080000102023-01-17. Service bulletin. EQUIPMENT:ELECTRICAL. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
S21050000032023-01-17. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; SERVICE BRAKES, HYDRAULIC. C1009 Brake Fluid Low DTC Red Brake Light On

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