# Service bulletin 23\-012\-20 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.

- Type: Service bulletin
- NHTSA id: 10174219
- Published by NHTSA: 2020\-04\-27
- Manufacturer's number: 23\-012\-20 REV. A
- Manufacturer's date: 2020\-03\-10
- NHTSA component: PARKING BRAKE

## NHTSA's summary

Park Brake Pedal Doesn't Fully Return This bulletin involves inspecting and if necessary, replace the parking brake tensioner and then adjust the parking brake cable system. Customer may comment on one or more of the following:The parking brake foot pedal does not fully return. The red ?brake? light is illuminated in the Instrument Panel Cluster \(IPC\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174219-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10174219-9999.pdf)

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

## Components

Brakes, Parking brake

## Vehicles listed

- 2019 to 2020 RAM 3500
- 2019 to 2020 RAM 4500

## Other bulletins for the same vehicles and component

- [1800824](/bulletins/10251873.md), 2024-03-18, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; PARKING BRAKE; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, DIESEL; EXTERIOR LIGHTING; POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). Flash: Powertrain Control Module \(PCM\) 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 \(DTCs\) have been set: P0506\-00 \- Idle Control System RPM \- Lower Than Expected.P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P0299\-00 \- Turbocharger Underboost. P1D73\-00 \- AGS Performance. P0626 \- Generator Field Control Circuit High. P218F \- Reductant No Flow Detected. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P0191 \- Fuel Rail Pressure Sensor Circuit Performance. P0461 \- Fuel Level Sensor 1 Performance. P0401 \- EGR System Performance. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P061A \- Level 2 Torque Performance. P061B \- Internal Control Module Torque Calculation Performance. P061E \- Internal Control Module Brake Signal Performance. P062C \- ETC Level 2 MPH Performance. P0106 \- Manifold Absolute Pressure Sensor Performance \(In extreme cold ambient temperatures\). P0116 \- Engine Coolant Temperature Sensor Performance. P0420 \- Catalyst System Efficiency Bank 1. P1507 \- Crankcase Filter Restriction. P203F \- Reductant Level Too Low. P226C \- Turbocharger Boost Control ?A? Slow Response \(In extreme cold ambient temperatures\). P2579 \- Turbocharger Speed Sensor Circuit. U0101 \- Lost Communication with TCM. U02A3 \- Lost of Communication with PM Sensor. U3017 \- Control Module Timer/Clock Performance. Customers may also experience one or more of the following Power
- [1800724](/bulletins/10251872.md), 2024-03-18, Service bulletin: POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); BACK OVER PREVENTION; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE; EQUIPMENT; FUEL SYSTEM, DIESEL; PARKING BRAKE. Flash: Powertrain Control Module \(PCM\) 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 \(DTCs\) have been set: P0506\-00 \- Idle Control System RPM \- Lower Than Expected. P0607\-00 \- ECU Internal Performance. P20E8\-00 \- Reductant Pressure Too Low. P0301\-00 \- Cylinder 1 Misfire. P0302\-00 \- Cylinder 2 Misfire. P0303\-00 \- Cylinder 3 Misfire. P0304\-00 \- Cylinder 4 Misfire. P0305\-00 \- Cylinder 5 Misfire. P0306\-00 \- Cylinder 6 Misfire. P0299\-00 \- Turbocharger Underboost. P1D73\-00 \- AGS Performance. P0626 \- Generator Field Control Circuit High. P218F \- Reductant No Flow Detected. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P0191 \- Fuel Rail Pressure Sensor Circuit Performance. P0461 \- Fuel Level Sensor 1 Performance. P0401 \- EGR System Performance. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P061A \- Level 2 Torque Performance. P061B \- Internal Control Module Torque Calculation Performance. P061E \- Internal Control Module Brake Signal Performance. P062C \- ETC Level 2 MPH Performance. P0106 \- Manifold Absolute Pressure Sensor Performance \(In extreme cold ambient temperatures\). P0116 \- Engine Coolant Temperature Sensor Performance. P0420 \- Catalyst System Efficiency Bank 1. P1507 \- Crankcase Filter Restriction. P203F \- Reductant Level Too Low. P226C \- Turbocharger Boost Control ?A? Slow Response \(In extreme cold ambient temperatures\). P2579 \- Turbocharger Speed Sensor Circuit. U0101 \- Lost Communication with TCM. U02A3 \- Lost of Communication with PM Sensor. U3017 \- Control Module Timer/Clock Performance.
- [S1623000028 Rev.](/bulletins/10231735.md), 2023-02-13, Service bulletin: VEHICLE SPEED CONTROL; BACK OVER PREVENTION; POWER TRAIN; VISIBILITY; PARKING BRAKE. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [S2108000170](/bulletins/10230194.md), 2023-01-17, Service bulletin: PARKING BRAKE. Head unit button stuck DTC code B14DA\-2A
- [08\-234\-22](/bulletins/10229819.md), 2023-01-17, Service bulletin: ENGINE AND ENGINE COOLING; STEERING; PARKING BRAKE; WHEELS; ELECTRICAL SYSTEM; BACK OVER PREVENTION. UAV and UCV Radio Enhancements Customers may experience one or more of the following: ? \*\*Wi\-Fi hotspot connection failure. ? Speaker popping, crackle noise during Voice Recognition \(VR\) response and navigation guidance. ? Mobile Station Integrated Services Digital Network \(MSISDN\) missing from radio, no connected services working.\*\* ? Lost radio presets. ? SXM favorite song not displaying/playing. ? Incorrect navigation address/location/directions. ? Lost navigation settings. ? SXM icon inoperative \(D\-Truck\). ? Radio display screen is black when the ignition is on \(Rear View Camera \(RVC\) not affected \(D\-Truck\)\). ? Radio freeze intermittent \(RVC not affected \(D\-Truck\)\). ? Wireless connectivity pair or connection issue \(D\-Truck\). ? Radio channel changes by itself \(D\-Truck\). ? Backup camera has black display screen, or Only displays Check Entire Surroundings with black screen \(occurs when vehicle is shifted immediately to reverse upon key\-on before RVC signal is received, recoverable with key cycle\) \(D\-Truck\). ? High pitch chime noise \(D\-Truck\). ? Contact list not loading \(D\-Truck\). ? ?Device Not Supported? message \(D\-Truck\). ? Remote app inoperative \(D\-Truck\). ? Travel\-Link fuel price incorrect \(D\-Truck\). ? Backup camera gridlines missing \(D\-Truck\). ? Unable to adjust volume \(D\-Truck\). ? Radio may reset/reboots, turn itself off and then back on again \(D\-Truck\). ? High pitch squeal, pop or humming sound coming from all of the speakers \(WK RU Only\). ? Radio display screen is black, intermittent \(RVC not affected \(WK RU Only\)\). ? Radio freeze intermittent \(RVC not affected \(WK RU Only\)\). ? Navigation stuck on loading screen or not appearing at all \(WK RU Only\). ? Radios resets when a wireless connectivity paired phone receives two text messages one after another simultaneously after approximately seven seconds. \(ABD sales code\). ? Speaker crackling noise on non amplified vehicles \(WK RU, UAV Only\). ? Active cal
- [0807220](/bulletins/10229348.md), 2023-01-09, Service bulletin: PARKING BRAKE; VISIBILITY:WINDSHIELD WIPER/WASHER; VISIBILITY. Loose Wiper Arms This bulletin involves checking and or re\-torquing the windshield wiper arm nuts. The customer may describe one or both of the windshield wiper arm are loose and may stop moving at times.
- [S2008000114](/bulletins/10221814.md), 2022-09-26, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; PARKING BRAKE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SXM Is Inoperative, Button Grayed Out Or Stuck In Loading Screen
- [S2108000170](/bulletins/10221608.md), 2022-09-26, Service bulletin: PARKING BRAKE. Head unit button stuck DTC code B14DA\-2A
- [9004165](/bulletins/10220000.md), 2022-09-15, Service bulletin: VISIBILITY; BACK OVER PREVENTION; PARKING BRAKE. WINDSHIELD For concern of rear view mirror loose or fell off, inspect mirror button. If the mirror button detatched from the winshield, please follow the normal repair process and take pictures of the button and the winshield trademark and email to: Diego Estrada \- diego.estrada@fcagroup.com to send the mirror button to the engineering team for analysis If you happen to replace the windshield please send it to him as well. If further information is needed, please contact Diego Estrada at \(248\) 494\-2651 If no response in 15 minutes, proceed with repair.
- [9004255](/bulletins/10175622.md), 2020-05-26, Service bulletin: PARKING BRAKE; ELECTRICAL SYSTEM. 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.

JSON: [/v1/bulletins/10174219](/v1/bulletins/10174219)

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