WenmarOpen by Wenmar Pro

Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Bulletins, newest first
90032932022-08-08. Service bulletin. SERVICE BRAKES. A/C Pressure Transducer A/C inoperative and diagnosis leads to pressure transducer. Call Steve Rice at cell (248) 867-0061 before replacing the pressure transducer. If no response in 15 minutes, please proceed with repair.
90038152022-08-08. Service bulletin. POWER TRAIN. Power Distribution Center For 2018 WK, prior to replacing the Power Distribution Center (PDC), you MUST contact the STAR Center (800) 850-7827 for diagnostic assistance and preauthorization. Failure to do so WILL result in your warranty claim being rejected.
21-047-172022-07-25. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN; ELECTRICAL SYSTEM; EQUIPMENT. Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Customers may experience the following: A ?bump? or ?jerk? during a park to drive or park to reverse garage shift immediately after starting the engine. The above symptom/condition can only be duplicated at startup when vehicle has been shut down for at least 5 minutes. Poor shift quality or ?bump? experienced during or immediatelyafter Engine Stop/Start (ESS) restart.
90032932022-07-25. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A/C Pressure Transducer A/C inoperative and diagnosis leads to pressure transducer. Call Steve Rice at cell (248) 867-0061 before replacing the pressure transducer. If no response in 15 minutes, please proceed with repair.
90038152022-07-25. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Power Distribution Center For 2018 WK, prior to replacing the Power Distribution Center (PDC), you MUST contact the STAR Center (800) 850-7827 for diagnostic assistance and preauthorization. Failure to do so WILL result in your warranty claim being rejected.
08-017-212022-07-18. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. Radio and Back-up Camera Enhancements This bulletin involves updating the radio software level to 1848.34. Customers may experience one or more of the following: Radio display screen flickers. Clock loses 6 seconds per day (JL with 5 inch screen). Green horizontal lines on back up display, in reverse (If this is the customer concern use camera LOP 18-60-02-Y7, on 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 started 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-Y7 on JL vehicles only). Audio cutting in and out during memory recall. Ring tone too loud. AM/FM volume fluctuates. While in CarPlay® or AndroidAuto,® Google® maps showing wrong location. Phone disconnected after first call. Black screen or White screen with vertical lines. PIN clear 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. The radio screen shows messages ?Software Update? or ?Reinsert USB Device? and displays that screen in a continuous loop.
S21090000012022-07-18. Service bulletin. SERVICE BRAKES. Customer may complain of a MIL lamp on. Upon further investigation there could be a fault code in the PCM for P1524 ? Oil Pressure Out of Range ? Camshaft Advance/Retard Disabled.
S1709000010 Rev.2022-07-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary.
S2008000031 Rev.2022-07-18. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Low Charging Voltage Displayed On Cluster
S228A0000042022-06-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Panasonic VP4R Wi-Fi New Enrollment Pause
S19250000082022-06-27. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.
08099212022-05-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. UAQ and UCQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to 39.5 Customers may experience one or more of the following: Intermittent, black radio display screen. Intermittent, radio freezes. Bluetooth® pairing and/or connection issues. Lost radio presets. Radio channels change by itself. SXM icon inoperative. In addition, the following enhancement are included in this update:Enables map updates.
S18090000072022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Customer Complaint May Include Engine Oil Leak Or Consumption
S21090000032022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. Vehicle Cranks But Does Not Start Additional Diagnostics.
05002222022-05-31. Service bulletin. EQUIPMENT; ENGINE; ELECTRICAL SYSTEM. Front Click Noise at Low Speed Turns This bulletin involves installing a friction disc kit on both front hub bearings and rotors. The customer may comment on the following: When making a sharp turn at low speed (parking lot) maneuvers, a click noise is heard. Most of the time the noise can be heard if the windows are open.
S22090000032022-05-31. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. Complete Engine Assembly Replacements Arriving Without Engine Wiring Harness.
S22080000732022-05-31. Service bulletin. ELECTRICAL SYSTEM. No Start, After Flash And Or PCM Replace, DTC P0513 Invalid Skim Key Setting
S1708000118 RevB2022-05-31. Service bulletin. ELECTRICAL SYSTEM. Battery Drain Concern, Dual USB Port Normal Operational Draw, Extended Illumination Or Extended Operation After Key Off
S22090000022022-05-31. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. When performing diagnosis, an internal engine concern may be suspected.
90045002022-05-31. Service bulletin. ELECTRICAL SYSTEM. ENGINE, Complete Due to a shortage of wiring harnesses, this service engine assembly is temporarily being shipped without an engine wiring harness. When installing the replacement engine, you will need to transfer the engine wiring harness from the original engine onto the new assembly. Refer to STAR Online S2209000003 for detailed instructions.
23-035-212021-12-13. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY:ROOF AND PILLARS. Rattle Coming From Sunroof This bulletin involves replacing the sunroof fasteners. Customers may comment on the following:Rattle coming from sunroof.
S1309000030 Rev.2021-12-13. Service bulletin. FUEL SYSTEM, OTHER:FUEL FILTER; UNKNOWN OR OTHER. Engine Oil Filter Interchangeability
S1623000034 Rev.2021-12-13. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS; UNKNOWN OR OTHER. Water Leak From Overhead Console, A Pillar And Or Headliner. Sunroof Drain Tube Inspection.
90038952021-12-13. Service bulletin. STRUCTURE:BODY:DOOR. Front Door Window If the front side door glass has flaws such as delamination, distortion, or cracking, please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the affected area of the glass and email the pictures to FCA Redacted Content
08-094-212021-06-28. Service bulletin. EQUIPMENT; EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS. UKA and UKG Radio Enhancements This bulletin involves updating the radio software level to 1848.35. Customers may experience one or more of the following:Radio display screen flickers. Clock loses 6 seconds per day (2019 JL with UKA). Radio resets with RPM less than 1000 RPM (2020 JL with UKG and 3.0L Diesel - EXJ).

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