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Service bulletin 9004548RevB

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 id10221376
Published by NHTSA2022-09-26
Manufacturer's number9004548RevB
Manufacturer's date2022-06-22
NHTSA componentELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC

NHTSA's summary

Module, Anti-lock brake system / Hydraulic Control Unit Some 2018-19 WD/WK vehicles have the brake lights staying on without depressing the brake pedal as an affect of DTC C1093-62 occurring or due to an internal failure in the HCU/ABS Module please contact FCA Redacted Content. If there is no response within 15 minutes of initiating your call, please - Obtain a vehicle scan report with the diagnostic environmental data. - Record the Primary Pressure Sensor value ($2002) and the Primary Pressure Sensor offset ($2007). - then, continue with your normal diagnostic process, if possible please avoid seperating the ECU and HCU.

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

Brakes, Electrical system

Trouble codes named

C1093

Vehicles listed
DODGE DURANGO2018, 2019, 2020, 2021, 2022
JEEP GRAND CHEROKEE2018, 2019, 2020, 2021
JEEP GRAND CHEROKEE 4XE2022 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
25V7410002025-10-30. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
25V5760002025-09-04. ELECTRICAL SYSTEM:PROPULSION SYSTEM
20246772024-11-07. Brakes
24V8380002024-11-07. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
24V7200002024-09-27. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20243282024-06-06. Brakes
24V4150002024-06-06. SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE
20223052022-06-09. Brakes
22V4260002022-06-09. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
20221082022-03-11. Brakes

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
S26080000382026-10-16. Service bulletin. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
S26080000382026-10-16. Service bulletin. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
08-221-26 REV. B2026-09-30. Service bulletin. R1H Radio U41.10 Software Update - Dealer Option Customers may experience one or more of the following: SYMPTOM: ● **Speakers may emit a humming, screeching, buzzing, clicking, or bass noise (not related to the amplifier).** ● FCW OFF light ON with no DTCs and can't turn off. ● Blank screen and then reboot every 2 minutes and 40 seconds. (Rearview Camera Functions Normally). ● Paddle shifters not working/no longer a setting. ● Autolocks not working. ● Auto headlights not working. ● AM station not working (Appears some of the vehicles PROXI defaults to "1" which is absent for AM). ● Album Art flickering issue. ● Blank screen and then reboot every 2 minutes and 40 seconds. ● CarPlay icon disappears from main screen while still active, leaving no navigation path back. ● Light/dark theme mismatch between Radio and temperature screens at key-on Radio experiences lockups, resets, blank screens, and language issues after FOTA. ● Valet mode sends duplicate requests causing HU and vehicle state misalignment. ● Rear seat media page intermittently shows a blank screen. ● Unable to select or drag 'Pitch and Roll' widget on home screen. ● USB playback resumes incorrectly, skipping to next track after reconnect. ● Album art not displayed on HMI despite availability in media. ● Incorrect call timer displayed for conference calls. ● Call status remains 'active' on widget after call ends. ● Second call status not updated on home screen widget. ● Rear entertainment tab intermittently blank when switching apps. ● System crashes for 20 to 30 seconds after voice reply action. ● Media progress bar continues incorrectly after second call acceptance. ● CarPlay device fails to reconnect automatically or manually. ● Rear HVAC lock/unlock text missing while icon is present. ● Visual glitch observed on Front Passenger Display Module (FPDM) display. ● Surround view camera accessible while driving across apps (unexpected behavior). This bulletin involves inspecting and if required, updating the radio software level to U41.10. Depending on the radio's current software level the radio may need a one or two USB update
S238A000038 REV.D2026-09-17. Service bulletin. Auto Emergency Braking (AEB) Unavailable – Service Required Message In Cluster
91009052026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
91009002026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
91009022026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
S2623000001 REV.A2026-09-03. Service bulletin. Rotary Shifter Lights Blinking, Shifter Not Moving, Not Going Into Gear.
1138032026-08-13. Service bulletin. HOSE AND TUBE - HEATER SUPPLY AND RETURN
08-294-262026-07-29. Service bulletin. Telematics Box Module (TBM) Firmware Over The Air Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Codes (DTCs): ● B22A9-00 - ECU Internal Performance. ● B1560-13 - Cellular Antenna 1-Circuit Open. ● B1561-13 - Cellular Antenna 2-Circuit Open. ● B1562-12 - GPS Antenna-Circuit Short To Battery. Customers may also comment on the following: ● "Uconnect Box Requires Service" message in the display screen module.