# Service bulletin S2124000003

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: 10194024
- Published by NHTSA: 2021\-05\-24
- Manufacturer's number: S2124000003
- Manufacturer's date: 2021\-04\-29
- NHTSA component: AIR BAGS

## NHTSA's summary

A/C Performance Not As Hot/Cold On Driver Side \- DTC's B11CB\-92, B11CB\-11

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194024-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10194024-9999.pdf)

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

## Components

Air bags

## Trouble codes named

B11CB

## Vehicles listed

- 2019 to 2021 RAM 1500
- 2019 to 2021 RAM 2500
- 2019 to 2021 RAM 3500
- 2019 to 2021 RAM 4500

## Recalls for the same vehicles and component

- [2025658](/recalls/tc/2025658.md), 2025-12-01: Airbag
- [25V824000](/recalls/nhtsa/25V824000.md), 2025-12-01: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- [2025613](/recalls/tc/2025613.md), 2025-11-06: Airbag
- [25V765000](/recalls/nhtsa/25V765000.md), 2025-11-06: STEERING:STEERING CONTROL MODULE; AIR BAGS:FRONTAL
- [25V298000](/recalls/nhtsa/25V298000.md), 2025-05-08: AIR BAGS; ELECTRICAL SYSTEM:WIRING
- [2025013](/recalls/tc/2025013.md), 2025-01-16: Airbag
- [25V010000](/recalls/nhtsa/25V010000.md), 2025-01-16: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- [2021722](/recalls/tc/2021722.md), 2021-11-24: Airbag
- [21V925000](/recalls/nhtsa/21V925000.md), 2021-11-24: AIR BAGS:SIDE/WINDOW:CURTAIN
- [2021511](/recalls/tc/2021511.md), 2021-08-12: Airbag

## Other bulletins for the same vehicles and component

- [S2623000057](/bulletins/11038555.md), 2026-10-16, Service bulletin: AIR BAGS. After Recent Service, A Replacement Occupant Classification Module \(OCM\) Is Non\-Responsive.
- [S2623000057](/bulletins/11038518.md), 2026-10-16, Service bulletin: AIR BAGS. After Recent Service, A Replacement Occupant Classification Module \(OCM\) Is Non\-Responsive.
- [1801723](/bulletins/10248003.md), 2024-01-02, Service bulletin: POWER TRAIN; BACK OVER PREVENTION; ELECTRICAL SYSTEM; AIR BAGS. Flash: Powertrain Control Module \(PCM\) Updates Customer or technician may experience the following: ? High frequency exhaust noise at idle after cold start. ? Power Take Off \(PTO\) disable to high engine oil temperature. ? Multiple Displacement System \(MDS\) transition causing a transmission clunk noise under light throttle when coasting in fourth gear. This bulletin involves reprogramming the PCM with the latest available software.
- [1801723](/bulletins/10234476.md), 2023-04-17, Service bulletin: BACK OVER PREVENTION; AIR BAGS; POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates Customer or technician may experience the following: ? High frequency exhaust noise at idle after cold start. ? Power Take Off \(PTO\) disable to high engine oil temperature. ? Multiple Displacement System \(MDS\) transition causing a transmission clunk noise under light throttle when coasting in fourth gear. This bulletin involves reprogramming the PCM with the latest available software.
- [S2323000008](/bulletins/10231720.md), 2023-02-13, Service bulletin: VEHICLE SPEED CONTROL; AIR BAGS; BACK OVER PREVENTION. Buzz Squeak Or Rattle Noise From Left Side Driver Door Area.
- [S2123000059](/bulletins/10230228.md), 2023-01-17, Service bulletin: AIR BAGS. Water Leak At Headliner Near Driver Microphone
- [S2108000178](/bulletins/10230219.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM; AIR BAGS. The Airbag Light Is Illuminated. B2765\-11 Right C\-Pillar Impact Acceleration Sensor\-Circuit Short To Ground
- [0808621](/bulletins/10230124.md), 2023-01-17, Service bulletin: VISIBILITY; VEHICLE SPEED CONTROL; AIR BAGS; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Driver Door Module \(DDM\) and Passenger Door Module \(PDM\) Updates This bulletin involves reprogramming the DDM and PDM with the latest available software. This software is for vehicles on the RRT VIN List is to improve the function and reliability of the power windows operation.
- [2301921](/bulletins/10230116.md), 2023-01-17, Service bulletin: POWER TRAIN; AIR BAGS. Power Side Steps Do Not Stow Or Deploy Properly This bulletin involves inspecting and if necessary replacing the driver or passenger power side step motor. Customers may notice one or more of the following:Power side steps do not stow or deploy properly. Information Panel Cluster \(IPC\) shows ?Obstacle Detection? fault.
- [0800720](/bulletins/10229338.md), 2023-01-09, Service bulletin: ELECTRICAL SYSTEM; AIR BAGS; BACK OVER PREVENTION; PARKING BRAKE. UAQ and UCQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to: UAQ radios \- 34.2. UCQ \- 30.24. 2019 LA and WD with UAQ or UCQ radios and 2020 WD with UCQ radio has been removed from the service bulletin and are now covered under a safety recall. Please refer to published information in DealerCONNECT/Service Library for more details. Customers may experience one or more of the following:Speaker crackling noise on non amplified vehicles \(UAQ Only\). Active call not transferred to vehicle Bluetooth®\(UAQ Only\). Voice Recognition \(VR\) not understanding commands to switch sources \(UAQ Only\). Bluetooth phonebook not available \(UAQ Only\). "Setting" button removed after ignition cycle \(UAQ Only\). Coolant temperature value incorrect \(UAQ Only\). Blank display screen at start up.

JSON: [/v1/bulletins/10194024](/v1/bulletins/10194024)

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