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Service bulletin S2423000027 REV.A

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 id11007172
Published by NHTSA2024-09-06
Manufacturer's numberS2423000027 REV.A
Manufacturer's date2024-09-06
NHTSA componentELECTRICAL SYSTEM
Manufacturer's systemHorn

NHTSA's summary

Horn Sound Is Weak, Off Tone, Or Inoperative.

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

Electrical system

Vehicles listed
RAM 15002019, 2020, 2021, 2022, 2023, 2024, 2025
RAM 25002019, 2020, 2021, 2022, 2023, 2024
RAM 35002019, 2020, 2021, 2022, 2023, 2024
RAM 45002019, 2020, 2021, 2022, 2023, 2024
RAM 55002019, 2020, 2021, 2022, 2023, 2024

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

Recalls for the same vehicles and component
26V2250002026-04-09. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
20260432026-02-02. Electrical
26V0590002026-02-02. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; EXTERIOR LIGHTING:TURN SIGNAL; EXTERIOR LIGHTING:BRAKE LIGHTS
25V8260002025-12-01. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
25V2980002025-05-08. AIR BAGS; ELECTRICAL SYSTEM:WIRING
25V2310002025-04-10. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
24V9420002024-12-19. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING:HEADLIGHTS
20230262023-02-09. Electrical
23V0600002023-02-09. ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
20216292021-10-14. Electrical

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
08-339-262026-09-30. Service bulletin. Max Tow Right and Left Rear Wheel Speed Sensors Inoperable Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C003A-62 - Right Rear Wheel Speed Sensor - Signal Compare Failure. ● C0037-62 - Left Rear Wheel Speed Sensor - Signal Compare Failure. ● C003A-2F - Right Rear Wheel Speed Sensor - Signal Erratic. ● C0037-2F - Left Rear Wheel Speed Sensor - Signal Erratic. Customers may comment on one or more of the following: ● The check engine light is illuminated. ● The Anti-Lock Brake System (ABS) light is illuminated. ● The Traction Control System (TCS) light is illuminated. ● The Forward Collision Warning (FCW) light is illuminated. ● The "4WD Unavailable" message is displayed in the Instrument Panel Cluster (IPC). ● Vehicle might not shift from Drive to Park or vice versa. NOTE: The vehicle safe hold systems are in place if the vehicle does not shift to Park. ● Vehicle will not shut off. This bulletin involves replacing both rear wheel speed sensors.
91009012026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
S2623000052 REV. A2026-09-10. Service bulletin. Airbag Warning Light On or Intermittent. The Occupant Restraint Controller (ORC) May Have The Following DTCs (Active/Stored)
S2418000012 REV.C2026-09-08. Service bulletin. Mil On/Check Engine Lamp (CEL) On, Engine Runs Rough
9100867 Rev 12026-09-03. Service bulletin. MODULE Air Bag Control CAUTION: If ORC contains active or stored B2207 DTC AND the vehicle contains a Pulse module (or other 3rd party non-approved devices, see below for more details) - DO NOT SUBMIT ORC WARRANTY CLAIM. Please ensure vehicle voltage is within specified limits. Most faults will store after an ignition cycle if the vehicle voltage is within specified limits. Check TERMINAL RETENTION ON CONNECTOR C1 PIN 11, CIRCUT D 282 CAN FD+_2 and repair any loose connection. For Loss OF Communication faults, please follow the diagnostic service routine in Service Library and confirm these steps before ORC replacement. Reference Service Library Section 28 - DTC-Based Diagnostics / MODULE, Body Control (BCM) / Diagnosis and Testing / U0151-00-LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE. The Standard Procedure / COMMUNICATION DIAGNOSTIC PROCEDURE must be performed before replacing any component(s) or module(s). AT A MINIMUM THESE PROCEEDURES MUST BE CHECKED: 1). (Refer to 28 - DTC-Based Diagnostics/MODULE, Body Control (BCM) / Standard Procedure). 2). COMMUNICATIONS DIAGNOSTIC PROCEDURE - LOSS OF COMMUNICATION DIAGNOSTIC PROCEDURE If the vehicle has ORC fault B2207 - Occupant Restraint Controller Internal 1 either active or stored, please check for 3rd party (non-Mopar) installed "Pulse" unit at the CHMSL & Cargo Lamp wires. Please take the Service action to check & remove Pulse unit (or other 3rd party brands) spliced in circuit# L56, L14, L51, and/or ground Z946 for the Center High Mounted Stop Lamp (CHMSL) and Cargo Lamps. Please correct the wiring to original OEM standard and replace the ORC module. Please document the "Pulse" unit (and/or other device names for the same function) in the service repair history. The "Pulse" unit (or other brand names) is a 3rd party, non-MOPAR circuit that when spliced into the CHIMSL circuit, can make the CHIMSL blink 3 times before becoming solid on upon activation of the brake switch. Please do not submit warranty claim when the Internal-1 DTC is confirmed to be caused by the "Pulse" or similar unit.
9100861 Rev 42026-08-26. Service bulletin. PUMP, Auxiliary Coolant, High Temperature Before replacing the High Temperature Auxiliary Coolant Pump, please perform the following steps: 1) Key ON/OFF and let the after-run pump run for at least 20 minutes before moving on to step #2. 2) Inspect the pump connector area for presence of water. 3) Inspect the pump connector for corrosion. 4) Inspect the pump for coolant contamination as this can cause the pump to stall. 5) Inspect battery terminals for damage to rule out a battery drainage issue. 6) Ensure the PCM is up-to-date with the latest available flash.
1138552026-08-26. Service bulletin. SWITCH AND BEZEL - FRONT DOOR
1138542026-08-26. Service bulletin. SWITCH AND BEZEL - FRONT DOOR
1140722026-08-26. Service bulletin. MOTOR - WINDOW REGULATOR
1140732026-08-26. Service bulletin. MOTOR - WINDOW REGULATOR