2021-2022 Jeep Wrangler Control Module Software Update
Jeep has issued Customer Satisfaction Notification Y40 for 2021-2022 Jeep Wrangler and 2021 RAM 1500 vehicles, focusing on important control module software updates to ensure optimal performance and address potential issues.
Si applica anche a
- Jeep Wrangler
- 2022
- Ram 1500
- 2021
What is Customer Satisfaction Notification Y40?
FCA US LLC (Stellantis) has issued Customer Satisfaction Notification Y40, a proactive measure to update the control module software in specific vehicles. This notification is not a safety recall but an important service action designed to enhance the overall performance and reliability of the affected systems. Owners of a 2021 Jeep Wrangler, 2022 Jeep Wrangler, or 2021 RAM 1500 should be aware of this update.
What the Update Addresses
This Customer Satisfaction Notification Y40 specifically targets the electrical system's control module software. While the exact details of the improvements are not specified in the summary, such updates typically address various aspects of vehicle operation. These can include optimizing engine performance, refining transmission shifting, enhancing infotainment system functionality, or improving the behavior of other electronic components. Ensuring your 2021 Jeep Wrangler control module software is up to date helps maintain the vehicle's intended operational standards.
Why Software Updates Are Important
Modern vehicles rely heavily on complex software to manage their numerous electronic systems. Regular software updates are crucial for several reasons. They can introduce new features, improve existing functionalities, enhance security, and proactively resolve potential glitches or compatibility issues before they lead to noticeable problems. For your 2021 Jeep Wrangler, keeping the control module software current ensures that all systems are running with the latest calibrations and improvements.
What Owners Should Do
If you own a 2021 Jeep Wrangler, 2022 Jeep Wrangler, or 2021 RAM 1500, it is recommended to contact your authorized dealership to schedule an appointment for the Customer Satisfaction Notification Y40 software update. Dealership technicians are equipped to perform these updates quickly and efficiently. This service is typically performed free of charge under a customer satisfaction notification.
NHTSA ID: 10251816
Frequently Asked Questions
- What is Customer Satisfaction Notification Y40?
- Customer Satisfaction Notification Y40 is a service action issued by FCA US LLC (Stellantis) to update the control module software in certain vehicles, including the 2021-2022 Jeep Wrangler and 2021 RAM 1500. It is not a safety recall but aims to improve vehicle performance and reliability.
- Which vehicles are affected by Customer Satisfaction Notification Y40?
- This notification applies to certain 2021 Jeep Wrangler, 2022 Jeep Wrangler, and 2021 RAM 1500 vehicles.
- What does the control module software update do?
- The control module software updates addressed by Customer Satisfaction Notification Y40 are designed to optimize various aspects of the vehicle's electrical systems, improving performance, functionality, and addressing potential issues.
- Is there a cost for the Y40 software update?
- No, customer satisfaction notifications like Y40 are typically performed free of charge by authorized dealerships.
- How do I get the Y40 software update for my 2021 Jeep Wrangler?
- You should contact your local authorized Jeep or RAM dealership to schedule an appointment for the Customer Satisfaction Notification Y40 software update.
What Jeep Wrangler owners report
Counted from the records in our database across 41 model years.
- 18,838
- Owner complaints
- 104
- Recalls
- 2,758
- Service bulletins
- 572
- Crashes reported
- 552
- Fires reported
- 435
- Injuries reported
The 2021 model year
963 complaints, the 5th most of 41 model years on file. Owners reported 21 crashes, 27 fires and 15 injuries for this year, which also has 17 recalls on file.
Electrical System, the system this article covers, accounts for 3,613 of 18,838 complaints (19%), including 313 for 2021.
Complaints by model year
| 2006 | 730 | |
|---|---|---|
| 2007 | 1,750 | |
| 2008 | 1,904 | |
| 2010 | 686 | |
| 2012 | 836 | |
| 2014 | 658 | |
| 2018 | 1,827 | |
| 2019 | 747 | |
| 2021 | 963 | |
| 2024 | 970 |
Most-reported systems
- Steering — 3,929
- Electrical System — 3,613
- Power Train — 2,470
- Engine — 2,406
- Fuel System — 2,015
Latest recalls for the 2021 model year
- 26V363000 — Steering (Jun 2026) — Park outside
- 25V741000 — Electrical System (Oct 2025) — Park outside
- 24V720000 — Electrical System (Sep 2024)
Recent owner reports about electrical system
The contact owns a 2021 Jeep Wrangler 4XE. The contact stated that while driving at 75 MPH, the vehicle lost motive power rapidly and unexpectedly. The contact pulled over to the shoulder before the vehicle stalled.
Read owner complaints →After the Jeep 68C recall fix since January 2026: • Aggressive Battery Throttling & "Bogging": The updated software heavily restricts power output (often capping electric draw around 40–50%) to keep the battery cool.
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
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