# Service bulletin 0820523

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: 10243274
- Published by NHTSA: 2023\-10\-02
- Manufacturer's number: 0820523
- Manufacturer's date: 2023\-08\-25
- NHTSA component: ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:CONTROL MODULE

## NHTSA's summary

Anti\-Theft Alarm Inoperative 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 Codes \(DTCs\): ? B1073\-71 \-Volumetric Sensor Fault\-Actuator Stuck. ? B1073\-96 \- Volumetric Sensor Fault\-Component Internal Failure. Customers may also experience: ? The theft\-alarm goes off and it is not possible to reactivate it. ? Message is displayed in the cluster stating the theft alarm is disabled. This bulletin involves replacing the dome lamp, which contains the theft\-alarm sensor.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10243274-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10243274-9999.pdf)

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

## Components

Electrical system, Ignition

## Trouble codes named

B1073

## Vehicles listed

- 2021 to 2022 ALFA ROMEO STELVIO

## Other bulletins for the same vehicles and component

- [0900222](/bulletins/10223001.md), 2022-10-17, Service bulletin: ELECTRICAL SYSTEM:IGNITION; ELECTRICAL SYSTEM. Ignition Coil Double Wire Causing Misfire This bulletin involves replacing all four ignition coils. 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 \(DTCs\): P0301 \- Cylinder 1 Misfire Detected. P0302 \- Cylinder 2 Misfire Detected. P0303 \- Cylinder 3 Misfire Detected. P0304 \- Cylinder 4 Misfire Detected. Customers may also experience the following:A rough running engine.

JSON: [/v1/bulletins/10243274](/v1/bulletins/10243274)

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