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Service bulletin S2121000011

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10198368
Published by NHTSA2021-06-28
Manufacturer's numberS2121000011
Manufacturer's date2021-05-17
NHTSA componentVEHICLE SPEED CONTROL:CRUISE CONTROL

NHTSA's summary

Long Crank With Diagnostic Trouble Code (DTC) U0104 ? Lost Communication With Cruise Control Module, Set.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Throttle and cruise control

Trouble codes named

U0104

Vehicles listed
JEEP GRAND CHEROKEE2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
90044042023-10-02. Service bulletin. GLASS, Front Door 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
91001172023-02-13. Service bulletin. HANDLE, Seat Release (WL75 3R FOLD HANDLE) WL75 3rd row Release Handle - Prior to replacing the handle for headrest not folding. Pull handle and inspect the release cable and handle, cable should be fully installed and with retention finger/tab present to correct this concern. If retention finger/tab is present, use a tool to fully seat ball fitting into side of handle and past the finger/tab avoiding partial installation. Cycle handle several times to ensure fitting did not come loose.
90041482023-02-13. Service bulletin. SPEAKER, 6"x9" Right or Left For a buzz, squeak or rattle (BSR) concern coming from the door speaker area please check that when removing the door trim panel, it doesn't come off with the two-stage push-pin clips (in vehicles that have this type of clip, not the ones with a screw) ONLY with its outer clip. If found to have any clip coming with both inner and outer part, please replace the clips with new ones (as old ones might have already been deformed) and reinstall the door trim. Follow Service Library procedure to properly remove/install the door trim. For this issue send feedback via email to FCA Redacted Content. If no response in 15 minutes, proceed with repair. Contact Us for feedback related ONLY to this GPOP Tech Tip. DO NOT email regarding repair procedures unrelated to this Tech Tip or part order inquires. Please include the Part Number(s) and Tech Tip Part Description of the Tech Tip you are referencing for our tracking systems.
0805022REVA2023-01-17. Service bulletin. Flash: Body Control Module (BCM) Updates This bulletin involves reprogramming the Body Control Module (BCM) with the latestavailable software. Customer may describe various LIN related functions (steering wheel, center stack, terrain or 4wd) switchesand/or certain interior lamps not working. Upon further inspection the technician may also observe the following DTCs may have set withouta 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 aftersleep 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 onlywill 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 andthe 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.
S21080001852023-01-17. Service bulletin. Passenger Rear Door Ajar Warning Lamp Display Illuminated On Cluster
S21230000392023-01-17. Service bulletin. Click Pop Snap Noise From Door Area On Rough Roads Or Body Twist
S21210000112023-01-17. Service bulletin. Long Crank With Diagnostic Trouble Code (DTC) U0104 ? Lost Communication With Cruise Control Module, Set.
S21230000322023-01-17. Service bulletin. Rattle Buzz Noise From Door Area
90041632023-01-17. Service bulletin. MOLDING, Wheel Flare, Quarter Panel (Wide wheel flares) If you have a Jeep Grand Cherokee Summit, SRT, Trackhawk or Limited X with wide flares that are loose appearing or poor fitting, please document the VIN and provide the following information: 1.) Take image of customer concern - Highlighting flare adhesive surface location where the misaligned/loose/delamination condition is found with respect to the door or body. 2.) Email images of concerns to FCA Redacted Content For additional questions, call FCA Redacted Content. If no response in 15 minutes, proceed with repair.
08161222023-01-09. Service bulletin. Flash: Memory Seat Module (MSM) Updates This bulletin involves reprogramming the MSM 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). B1D9B-54 - Seat Horizontal Front Stop Not Learned-Missing Calibration. Customers may experience the following:Memory seat do not save on profiles 1 or 2. Easy entry/exit functionality is inoperative. Drivers massage seats do not recall lumbar and bolster position when profile selected on radio (Recall from door switches and keyfob work as expected).