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Service bulletins for the 2016 Ram 4500

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.

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

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
08-009-162017-11-03. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM; EQUIPMENT. Radio Software Enhancements This bulletin involves updating the radio's software. A customer may experience one or more of the following: · Radio display screen intermittently may go blank. · Radio display screen may lock up. · Back up display may not turn off. · Loss of radio memory for skipped channels or incorrectly displaying skipped channels in the menu list. · Korean language was not supported (APAC - Korea only). Additional Enhancements: · Removed the charging schedule from showing in the setting menu (FF BEV only). · Adding Korean language support (APAC - Korea only).
21-005-162017-11-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience one or more of the following conditions: · A harsh 1-2 upshift. · Excessive gear shifting.
21-004-162017-11-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience one or more of the following conditions: · A harsh 1-2 upshift. · Excessive gear shifting.
08-080-16 REV. A2017-11-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Flash: BCM Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM) software. The customer may describe the headlamps flicker while operating at night. This condition may be more prevalent after the bulb(s) have been replaced with an aftermarket bulb.
23-040-172017-11-03. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. Gap at Center Stack at the Instrument Panel This bulletin involves rework to the center stack trim at the instrument panel. The customer may notice a large gap where the center stack meets the instrument panelFig. 1.Gap at Center Stack Trim
68210071A$2017-11-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Intake Grid Heater Grid Heater Relay 2012 - 2016 6.7L Cummins engines with Intake Heater issues or DTC P2609 and P0542, please replace the Intake Heater Grid and Relay as a set. 68210071A$ (relay) and 05187880A$ (grid). Inspect electrical cable between the heater grid and relay for signs of possible overheating. Replace cable as necessary.
21-027-16 REV. A2017-11-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Transmission Torque Converter Replacement Due To Dislodged Snap Ring This bulletin involves replacing the torque converter after verifying that an internal snap ring has dislodged. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) set in the Transmission Control Module (TCM) memory: · P2757-00 - TCC Pressure Control Solenoid Control Circuit Performance.
08-073-162017-11-03. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Flash: Instrument Panel Cluster (IPC) Enhancement This bulletin involves updating the Instrument Panel software and updating Radio Frequency Hub Module (RFHM) software to latest version. The customer may describe one or more of the following: · Instrument cluster backlighting may start flickering. This usually occurs when the dimming is in the lower settings (high-line instrument panels only). · The cruise control set speed does not match the digital speedometer (BUX vehicles only).
18-082-162017-11-03. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; POWER TRAIN. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs: · **P0335 - Crankshaft Position Sensor Circuit. · P2610 - PCM Internal Engine Off Timer Performance.** · P0456 - EVAP System Small Leak. · P3402 - Cylinder 1 Deactivation Control Performance. · P3426 - Cylinder 4 Deactivation Control Performance. · P3442 - Cylinder 6 Deactivation Control Performance. · P3450 - Cylinder 7 Deactivation Control Performance. · P2610 - PCM Internal Engine Off Timer Performance set in the PCM memory. In addition to the DTCs listed above, the software update will improve: · **Correct an issue related to rounding of the cruise control set speed displayed in the cluster. · Brake Throttle Override calibration has changed to be less sensitive. · Throttle Body supplier change has caused a widening of the minimum and maximum voltage limits · Correct a software issue with oil pressure light function at key-up. · Correct a software issue related to idle timer. · Correct a software issue with inconsistent engine RPM increments/decrements with operator idle speed.(DD/DF/DP ONLY).** · Improved Cruise Control Acceleration mode. · Improved Multi Displacement System operation 6-Speed Automatic 66RFE transmission (Sales Code DFP). · Multi Displacement System function improved while in PTO stationary mode. 6-Speed Auto Aisin AS66RC transmission (Sales Code DF3). · Potential small improvement in fuel economy at higher altitudes. · Potential improvement in high altitude engine idle RPM stability. · EGR monitor status function.
21-005-16 REV. A2017-10-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience one or more of the following conditions: · A harsh 1-2 upshift. · Excessive gear shifting.
08-057-162016-07-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. SUBJECT: RA3 RA4 Radio Enhancements OVERVIEW: This bulletin involves inspecting and, if required, updating the radio software. SYMPTOM/CONDITION: A small number of customers may experience one or more of the following: • Navigation failed message is displayed. • Clock not automatically updating to local time. • Poor or no connection to cellular network. • HVAC temperature out of sync with radio display (KL vehicles). • Display goes blank/black. • Radio locks up. • Some Uconnect App remote commands do not execute with the vehicle.
08-050-162016-07-14. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS; ELECTRICAL SYSTEM. SUBJECT: Headlamps May Be Out Of Adjustment Or Alignment. OVERVIEW: This bulletin involves adjusting the headlamps to specified alignment. SYMPTOM/CONDITION: The customer may describe that the headlamps are out of alignment or oncoming vehicles are flashing their bright lights at them.
08-044-162016-07-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SUBJECT: Flash: Radio Frequency Hub Module (RFHM) Enhancement SYMPTOM/CONDITION: Customers may describe the instrument cluster is illuminating by itself after the ignition has been off for an extended period of time (10 minutes or more).
08-057-162016-07-07. Service bulletin. ELECTRICAL SYSTEM. SUBJECT: RA3 RA4 Radio Enhancements OVERVIEW: This bulletin involves inspecting and, if required, updating the radio software. SYMPTOM/CONDITION: A small number of customers may experience one or more of the following: • Navigation failed message is displayed. • Clock not automatically updating to local time. • Poor or no connection to cellular network. • HVAC temperature out of sync with radio display (KL vehicles). • Display goes blank/black. • Radio locks up. • Some Uconnect App remote commands do not execute with the vehicle.
18-080-152016-06-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
08-026-13REV.B2016-04-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. SUMMARY TO BE PROVIDED ON A FUTURE DATE.

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