# Service bulletin 9100593 Rev 4

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.

- Type: Service bulletin
- NHTSA id: 11023084
- Published by NHTSA: 2025\-09\-10
- Manufacturer's number: 9100593 Rev 4
- Manufacturer's date: 2025\-09\-03
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

In case of TPMS concerns, please follow the below: \- Verify that the 12V Vehicle battery is good, as low or dead batteries may cause TPMS to not function as designed. \- In case of Tire Rotation or Tire Change for Sensata TPM sensors. \- Perform TPMS Autolearn Procedure. \- \(Autolearn Procedure \- Drive over a speed of 25Kmph or 15 Mph for 20 mins\) \- If an RFH is replaced for any other concern, please program the TPMS sensor IDs and placard values into the new RFH and perform the autolearn procedure. \- Verify if the RFHM and IPC SWs are up to date. If not, update to the latest SW versions. \- Disconnect the Remote Start Antenna Coaxial cable, wait for a minute and plug it back in and verify if the antenna is working as expected, as any issues with it can cause TPMS and Fob issues. \- Study the Remote Start Antenna wiring for pinches or damages, as any of these can cause issues with the TPMS and the fob functions. \- If DTCs \- C15CB00 \("Front Axle Tire Pressure Placard Implausible"\) and/or C15CC00 \("Rear Axle Tire Pressure Placard Implausible"\) are being triggered, program the placard values. Also, check if the placard values were programmed previously. \- Make sure the sensors are fitted correctly to the rim. Incorrect positioning and loose tire sensors will cause the TPMS system to not work as expected. \- If there are any issues in terms of tire pressure, inflate or deflate to the recommended placard pressures. \- Verify if the sensor IDs are correct. If they are incorrect, autolearn the sensors. \(Autolearn Procedure \- Drive over a speed of 25Kmph or 15 Mph for 20 mins\) \- If the sensor is still not working as expected, Swap the sensor that is having issues to another wheel location on the vehicle relatively closer to RFHM, and check if the problem exists in the new location after autolearning. If yes, the sensor would be inspected. If no, check for aftermarket parts on the vehicle as they can affect the TPMS system. \- Aftermarket parts that can impact TPMS functioning: Electrical LED LIGHTING RV equipment, Rear cameras \(After Market\) Toll Road Transponder Transceivers radios such as FRS /CB. DC/AC inverter Wiring loose grounds. After\-market added wiring causing RF coupling Off road / Uplift modifications Aftermarket illuminated splash shields. RFH antenna disconnected. Another aftermarket device introducing RF noise around 433Mhz. Aftermarket GPS devices Aftermarket Wi\-Fi hotspots Broken RFH antenna. Nonelectrical Aftermarket devices Steel reinforced tires. Metal Bedliner installed. After Market Tire Incorrect Installation of sensor in winter tires \(example TPM upside down\) Damages to sensor during tires service Aftermarket Metal splash shields Aftermarket stem valve cup Tinted Glasses \(some of them contain metal\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023084-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023084-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Trouble codes named

C15CB, C15CC

## Vehicles listed

- 2025 RAM 1500

## Recalls for the same vehicles and component

- [26V225000](/recalls/nhtsa/26V225000.md), 2026-04-09: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2026043](/recalls/tc/2026043.md), 2026-02-02: Electrical
- [26V059000](/recalls/nhtsa/26V059000.md), 2026-02-02: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; EXTERIOR LIGHTING:TURN SIGNAL; EXTERIOR LIGHTING:BRAKE LIGHTS
- [25V826000](/recalls/nhtsa/25V826000.md), 2025-12-01: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [25V231000](/recalls/nhtsa/25V231000.md), 2025-04-10: TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [24V942000](/recalls/nhtsa/24V942000.md), 2024-12-19: ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING:HEADLIGHTS

## Other bulletins for the same vehicles and component

- [S2418000012 REV.C](/bulletins/11037155.md), 2026-09-08, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Mil On/Check Engine Lamp \(CEL\) On, Engine Runs Rough
- [9100867 Rev 1](/bulletins/11036770.md), 2026-09-03, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM. 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 4](/bulletins/11036368.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. 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.
- [114072](/bulletins/11036362.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. MOTOR \- WINDOW REGULATOR
- [114073](/bulletins/11036361.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. MOTOR \- WINDOW REGULATOR
- [9100879](/bulletins/11036177.md), 2026-08-13, Service bulletin: ELECTRICAL SYSTEM. Front Passenger Display Module Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only.
- [08\-305\-26](/bulletins/11035978.md), 2026-08-06, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. Flash: Brake System Control Module \(BSCM\) Updates \*\*Customers may experience one or more of the following: SYMPTOM: ● Warning message "Selec\-Speed Unavailable" appears in the Instrument Panel Cluster \(IPC\) when trying to enable the Selec\-Speed Control \(SSC\) function. NOTE: There will be no Diagnostic Trouble Codes \(DTCs\) and no driveability concerns with this symptom.\*\* ● Anti\-Lock Brake System \(ABS\), Electronic Stability Control \(ESC\) and 'Decel ACC' lights on in the IPC. Technicians may also find the following: ● DTC C121A\-00 \- Steering Angle Sensor Not Initialized \- Is stored with no Malfunction Indicator Lamp \(MIL\). This bulletin involves reprogramming the BSCM with the latest available software.
- [08\-283\-26](/bulletins/11035167.md), 2026-07-23, Service bulletin: ELECTRICAL SYSTEM. Not applicable to vehicles built for US market. Battery Pack Control Module \(BPCM\) Software Update Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation SYMPTOM: the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\) has been set: ● \*\*P1A29\-00 \- Cell Supervisory Circuit A Failure. ● U3017\-00 \- Control Module Timer/Clock Performance.\*\* ● P0E55\-00 \- DC/DC Converter Current Sensor Circuit "A" Intermittent/erratic. Customers may also experience one or more of the following: ● \*\*Vehicle in limp\-home mode. ● Start/Stop feature will be disabled.\*\* ● The 12\-volt battery is not charging properly. ● The battery charge stays low or dies quickly, even after driving. ● The vehicle had to be towed due to battery not charging.
- [08\-278\-26](/bulletins/11035164.md), 2026-07-23, Service bulletin: ELECTRICAL SYSTEM. Not applicable to vehicles built for US market. Digital Key Control Module \(DKCM\) SOP 5.0 FOTA Only The customer may comment on the following: SYMPTOM: ● Smart Phone As Key does not work. ● Unable to pair their device as a Digital Key. ● Unable to see Digital Key tile in their RAM App. ● Ability to pair the key but unable to see the Lock/Unlock/Panic/Remote Climate buttons in their wallet. \(Even though their phone is qualified to have the feature\). ● Vehicle proximity lights wake up too often when near the vehicle with their phone.
- [S2608000032](/bulletins/11035087.md), 2026-07-18, Service bulletin: ELECTRICAL SYSTEM. Instrumental Panel Cluster \(IPC\) Mechanical Gauge Stuck, Inaccurate

JSON: [/v1/bulletins/11023084](/v1/bulletins/11023084)

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