B1A7D · 제조사 기술 자료

RAM · 2025-12-18

Keyless Ignition Node (KIN) Sets Diagnostic Trouble Codes (DTCs) B1A7D-2A, U103C-00, or B1A7D-01, P05BD-00

JEEP · 2025-11-14

Flash: Radio Frequency Hub Module (RFHM) Updates **Customers have experienced: ● Intermittent key fob detection. ● Possible dead batteries in key fobs. ● Proximity Wake-Up (welcome feature) does not activate at times. ● Key fob not detected when inside vehicle.** ● Uconnect app requests not functioning (lock/unlock, remote start functions). The following software enhancements are also included: ● DTCs B1A7D and B1A0A-00 robustness improvements. This bulletin involves updating the RFHM module with the latest available software.

RAM · 2025-10-29

Please refer SOL "S2508000083" published in October 2025. DO NOT REPLACE KIN/ignition switch module PN 68548293A*, 68548293A*, 68595832AA due to stored RFH DTC B1A7D-2A: Start Button-Stuck, P05BD: STOP-START MODE SWITCH RANGE/PERFORMANCE Please do not replace KIN/ignition switch module if all the following conditions are TRUE 1-3. 1. Stored RFH DTC B1A7D-2A: Start Button-Stuck 2. No functional issues observed or reported 3. Don't replace KIN if you find the DTC P05BD: STOP-START MODE SWITCH RANGE/PERFORMANCE. THIS IS NOT a KIN DTC. This DTC is related to the Electronic Shift Module- stop start on off button

RAM · 2025-10-07

Keyless Ignition Node (KIN) Sets Diagnostic Trouble Codes (DTCs) B1A7D-2A, U103C-00, or B1A7D-01

RAM · 2024-12-17

Push to Start Button Has a Delay Switching Ignition Positions, DTCs (Diagnostic Trouble Codes), B1A7D-2A Start Button - Stuck, U103C-00 KIN/IGNM Communication

RAM · 2023-08-02

Flash: Radio Frequency Hub Module (RFHM) Update The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs): ? B1053-64 RFHM (Kin Communication) - Signal Plausibility Failure Set In The RF Hub. ? B1A7D-2F Start Button - Signal Erratic. Customers may also experience one or more of the following: ? Messages shown on the Instrument Panel Cluster (IPC): ? Service Passive Entry Vehicle will not Shut Off or Restart. ? To Shut Off Vehicle, See Vehicle Settings (if the vehicle speed is lower than 4 KMH) (2.4 MPH). ? Engine will not shut off. ? Lamp lit on IPC (Fig. 1) . This bulletin involves updating the RFHM with the latest available software.

RAM · 2023-08-02

Flash: Radio Frequency Hub Module (RFHM) Update The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs): ? B1053-64 RFHM (Kin Communication) - Signal Plausibility Failure Set In The RF Hub. ? B1A7D-2F Start Button - Signal Erratic. Customers may also experience one or more of the following: ? Messages shown on the Instrument Panel Cluster (IPC): ? Service Passive Entry Vehicle will not Shut Off or Restart. ? To Shut Off Vehicle, See Vehicle Settings (if the vehicle speed is lower than 4 KMH) (2.4 MPH). ? Engine will not shut off. ? Lamp lit on IPC (Fig. 1) . This bulletin involves updating the RFHM with the latest available software.

JEEP · 2023-05-12

Flash: Radio Frequency Hub Module (RFHM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTC)s have been set: ? B1053-64 RFHM (KIN Communication) - Signal Plausibility Failure ? B1A7D-2F- Start Button-Signal Erratic Customers may also experience: ? Vehicle can not be switched off using the keyless button. This bulletin involves updating the RFHM module with the latest available software.

DODGE · 2023-02-25

Flash: Radio Frequency Hub Module (RFHM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? B1A7D-01 - Start Button - General Electrical Failure. This bulletin involves updating the RFHM module with the latest available software.

JEEP · 2023-02-24

Flash: Radio Frequency Hub Module (RFHM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs) have been set: ? **B1A7D-2F- Start Button-Signal Erratic** ? B1053-64 RFHM (KIN Communication) - Signal Plausibility Failure Customers may also experience: ? **Vehicle can not be switched off using the keyless button.** ? ?Service Passive Entry? light on cluster. ? Vehicle will not shut off with DTC B1053-64. ? Vehicle may not start with DTC B1053-64. This bulletin involves updating the RFHM module with the latest available software.

JEEP · 2023-02-23

Flash: Radio Frequency Hub Module (RFHM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs) have been set: ? B1053-64 RFHM (KIN Communication) - Signal Plausibility Failure ? B1A7D-2F- Start Button-Signal Erratic Customers may also experience: ? Vehicle can not be switched off using the keyless button. This bulletin involves updating the RFHM module with the latest available software.

RAM · 2020-04-22

SWITCH, Ignition, Push Button (Keyless Ignition Node) Prior to replacing parts for a B1A7D-2A Diagnostic trouble code on heavy duty trucks.Please call FCA Redacted Content , please email a scan and config report to FCA Redacted Content. If no response in 15 minutes, proceed with repair.