Service bulletin OTA 22B28

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10225798
Published by NHTSA	2022-11-04
Manufacturer's number	OTA 22B28
Manufacturer's date	2022-10-13
NHTSA component	VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; VISIBILITY

NHTSA's summary

Customer Satisfaction Program 22B28 for 2021-2022 Model Year Mustang Mach-E vehicles is now available. Quality Improvements Include: Improved HVAC system heat capability when exterior temps are at or below -15 C/5 F

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
FORD MUSTANG MACH E	2021, 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2025260	2025-05-09. Visual System
21V712000	2021-09-14. VISIBILITY:FIXED PANARAMIC ROOF/SKY LIGHT ASSEMBLY
21V711000	2021-09-14. VISIBILITY:WINDSHIELD:CRITICAL FASTENERS; VISIBILITY:WINDSHIELD

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SSM 55008	2026-07-20. Service bulletin. Some 2021-2026 Ford vehicles may exhibit inoperative heated/cooled seats, heated steering wheel and/or front/rear defrost features after a remote start is performed through the Ford mobile application or with the key fob. Customers may also experience heated/cooled seats, heated steering wheel and/or front/rear defrost features turning on in unexpected conditions such as during warmer weather. These features will operate normally when commanded in the center display screen. This may be due to the customer not setting up their "Climate Settings" through the Ford mobile application. To correct this condition, inform the customer they should perform a remote start from the Ford mobile application and then adjust the "Climate Settings" in the Ford mobile application as desired. These settings only need to be set once and will persist through subsequent remote starts. Heated and cooled seats will be set to Level 2 when turned ON via "Climate Settings" in the Ford mobile application during a remote start event. This is normal operating characteristic. This condition does not affect vehicle durability and no a
SYNC-25.1.9.7.1 MachE	2026-03-05. Over-the-air update. "25S49 Recall Remedy: -Infotainment software update to address frozen screens"
SYNC-25.1.7.10.1 MachE	2026-02-25. Over-the-air update. 25S49 Recall Remedy: -Infotainment software update to address frozen screens
HVAC-25.26 MachE	2025-10-17. Over-the-air update. Quality improvements include: -Calibration update for the Heating Ventilating and Air Conditioning module to prevent window fogging in cold weather
TSB 24-2230	2024-07-29. Service bulletin. This article supersedes TSB 24-2002 to update the symptom, production fix date and the service procedure. Some 2021-2024 Mustang Mach-E vehicles built on or before 09-Jul-2024 may exhibit a wind noise from the exterior mirrors/A-pillar area when driving between 25 mph-40 mph (32 km/h-64 Km/h). This may be due to poor sealing of the lower mirror foam and the glass top run foam. To correct this condition, follow the Service Procedure to install new lower inner foam and the glass top run foam.
TSB 24-2002	2024-02-06. Service bulletin. Some 2021-2023 Mustang Mach-E vehicles built on or before 04-Dec-2023 may exhibit a wind noise from the exterior mirrors/A-pillar area when driving at or above 40 mph (64 km/h). This may be due to poor sealing of the lower mirror foam and the glass top run foam.
TSB 23-2088	2023-04-04. Service bulletin. Some 2021-2023 Mustang Mach-E vehicles may exhibit a lack/loss of heat and/or windshield interior fogging while driving during freezing temperatures. This may be due to the heating ventilation and air conditioning (HVAC) control module software. To correct the condition, follow the Service Procedure to update the HVAC control module software.
22B28	2023-01-06. Service bulletin. Ensure your vehicle is providing optimal output from its heating system, we have developed a software update to improve the heating capability, defrost and defog performance when exterior temperatures are at or below -15C/5F.
TSB 22-2182	2022-05-12. Service bulletin. Some 2021-2022 Mustang Mach-E vehicles may exhibit a lack/loss of heat while driving during freezing temperatures. This may be due to the heating ventilation and air conditioning (HVAC) control module software. To correct the condition, follow the Service Procedure to update the HVAC software.
SSM 50645	2022-04-13. Service bulletin. Some 2021-2022 Mustang Mach-E vehicles may exhibit a lack/loss of heat while driving during freezing temperatures. The Workshop Manual, Section 412-00 pinpoint test J has been updated to aid in proper diagnosis. This may be due to the heating ventilation and air conditioning control (HVAC) module software. Recommend the customer to use AUTO Mode and adjust the temperature to maximize heater performance. This does not affect vehicle durability and no additional diagnosis or service is required at this time. Inform customers they can continue to drive the vehicle and engineering is currently working on a solution for this condition that is expected in late April 2022. Replacement or reprogramming of the HVAC will not resolve this condition. Monitor OASIS for additional information and schedule service appointments for customers once the repair becomes available.