# Service bulletin 08\-140\-21

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: 10218586
- Published by NHTSA: 2022\-08\-22
- Manufacturer's number: 08\-140\-21
- Manufacturer's date: 2021\-08\-24
- NHTSA component: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

## NHTSA's summary

Flash: Adaptive Cruise Control \(ACC\) Module Enhancements This bulletin involves reprogramming the ACC module with the latest software available. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set: C15D8\-00 \- Mismatch Tire Size.If the DTC is active, perform the software update and if stored, perform diagnostics per the published service procedure. The customer may describe one or more of the following: Adaptive Cruise Control \(ACC\) is inoperable and the warning light is on in the Instrument Panel Cluster \(IPC\). Automatic Emergency Braking \(AEB\) is inoperable and the warning light is on in the IPC.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10218586-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10218586-9999.pdf)

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

## Components

Driver assistance, Adaptive cruise control

## Trouble codes named

C15D8

## Vehicles listed

- 2021 DODGE DURANGO

## Other bulletins for the same vehicles and component

- [S2408000114 REV.A](/bulletins/11018269.md), 2025-05-14, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. " Instrument Panel Cluster \(IPC\) Displays Warning Lamps or Messages for Loss of Advanced Driver Assist System \(ADAS\)"

JSON: [/v1/bulletins/10218586](/v1/bulletins/10218586)

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