# Service bulletin 0808222

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: 10228068
- Published by NHTSA: 2022\-12\-19
- Manufacturer's number: 0808222
- Manufacturer's date: 2022\-04\-15
- NHTSA component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

## NHTSA's summary

Heating Ventilation and Air Conditioning \(HVAC\) Updates

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10228068-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10228068-9999.pdf)

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

## Components

Glass, wipers and mirrors, Heating and air conditioning

## Vehicles listed

- 2020 ALFA ROMEO STELVIO

## Recalls for the same vehicles and component

- [2025533](/recalls/tc/2025533.md), 2025-10-07: Visual System

## Other bulletins for the same vehicles and component

- [9100142](/bulletins/10236969.md), 2023-05-30, Service bulletin: VISIBILITY:REARVIEW MIRRORS/DEVICES. Mirror
- [2400421](/bulletins/10230112.md), 2023-01-17, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Flash: Heating, Ventilation and Air Conditioning \(HVAC\) Module Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination with the following Diagnostic Trouble Code \(DTC\) or the symptom/conditions listed below: B10C8\-36 \- Cabin Fan Brushless \- Signal Frequency Too Low. The HVAC fan stops working after a Engine Start/Stop \(ESS\) function.
- [2400421](/bulletins/10223340.md), 2022-10-17, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Flash: Heating, Ventilation and Air Conditioning \(HVAC\) Module Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination with the following Diagnostic Trouble Code \(DTC\) or the symptom/conditions listed below: B10C8\-36 \- Cabin Fan Brushless \- Signal Frequency Too Low. The HVAC fan stops working after a Engine Start/Stop \(ESS\) function.
- [S2024000006](/bulletins/10221839.md), 2022-09-26, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM. After Module Replacement A/C Systems Do Not Operate Properly. DTC B1938\-64 Humidity Sensor LIN Bus ? Signal Plausibility Failure
- [S2124000004](/bulletins/10220891.md), 2022-09-26, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. A/C does not cool and vehicle is low on Freon charge but no leak is found with sniffer or black light anywhere in the system
- [24\-003\-20](/bulletins/10187718.md), 2021-03-01, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Flash: Heating, Ventilation and Air Conditioning \(HVAC\) Module Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination with the following Diagnostic Trouble Code \(DTC\) or the symptom/conditions listed below:B10C8\-36 \- Cabin Fan Brushless \- Signal Frequency Too Low. The HVAC fan stops working after a Engine Start/Stop \(ESS\) function.

JSON: [/v1/bulletins/10228068](/v1/bulletins/10228068)

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