2021-2022 BMW 430i, i4 Compressor Fuse Issue
BMW has issued Manufacturer Communication 10218375 for 2021-2022 430i and i4 models regarding an incorrect fuse rating for the compressor circuit. The 30 Amp fuse (F227) needs to be replaced with a 40 Amp fuse (F229) to ensure proper circuit protection.
Also applies to
- BMW 430i
- 2022
- BMW i4
- 2022
BMW has released Manufacturer Communication 10218375 addressing an electrical system concern in certain 2021-2022 BMW 430i and i4 vehicles. The communication highlights an incorrect fuse assignment for the compressor circuit, which could lead to inadequate electrical protection.
This issue, identified as an "incorrect terminal assignment," means the compressor circuit is currently protected by a 30 Amp fuse in slot F227. However, a 40 Amp fuse in slot F229 is necessary to provide suitable circuit protection for the compressor.
Symptoms
While the manufacturer communication does not list specific symptoms, an incorrectly fused compressor circuit could potentially lead to several issues. Owners might experience a non-functional air conditioning compressor, reduced cooling performance, or a blown fuse related to the compressor system. If the fuse is undersized, it could repeatedly blow, disabling the compressor.
Diagnosis
The root cause of this issue is an incorrect terminal assignment during vehicle assembly. Technicians would typically diagnose this by checking the fuse box and verifying the amperage of the fuse installed in the compressor circuit. The presence of a 30 Amp fuse in slot F227 for the compressor circuit would confirm the condition described in the 2021 BMW 430i manufacturer_communication.
Repair Procedure Summary
The repair involves replacing the incorrectly rated fuse with the appropriate one. Specifically, the 30 Amp fuse located in slot F227, which currently protects the compressor circuit, must be replaced with a 40 Amp fuse. This new 40 Amp fuse should be installed in slot F229, as this is the required rating for suitable circuit protection of the compressor.
Required Parts
The primary part required for this fix is a 40 Amp fuse. No special tools or extensive procedures are indicated beyond standard fuse replacement practices.
Important Warnings
BMW explicitly states that a "40 A fuse (slot F229) is required for suitable circuit protection." This means that continuing to operate the vehicle with the 30 Amp fuse (slot F227) on the compressor circuit could lead to insufficient protection and potential electrical issues or component damage over time.
Owner Action
If you own a 2021-2022 BMW 430i or i4, it is recommended to contact your authorized BMW dealer. They can verify if your vehicle is affected by this specific manufacturer communication, 10218375, and perform the necessary fuse replacement. This repair is typically covered under warranty as it addresses a manufacturing defect.
Source: NHTSA Manufacturer Communication 10218375.
Frequently Asked Questions
- What is Manufacturer Communication 10218375 about?
- Manufacturer Communication 10218375 from BMW addresses an incorrect fuse rating for the compressor circuit in certain 2021-2022 BMW 430i and i4 vehicles, requiring a higher amperage fuse for proper protection.
- Which BMW models are affected by the compressor fuse issue?
- This issue affects 2021-2022 BMW 430i and 2022 BMW i4 models, as detailed in the 2021 BMW 430i manufacturer_communication.
- What is the fix for the BMW compressor fuse problem?
- The fix involves replacing the 30 Amp fuse (F227) currently protecting the compressor circuit with a 40 Amp fuse (F229) to ensure suitable electrical protection.
- What are the potential consequences of the incorrect fuse?
- An incorrectly rated fuse, such as the 30 Amp fuse in the compressor circuit, could lead to insufficient electrical protection, potentially causing the fuse to blow prematurely, disabling the compressor, or leading to other electrical system issues.
What BMW 430i owners report
Counted from the records in our database across 10 model years.
- 127
- Owner complaints
- 17
- Recalls
- 509
- Service bulletins
- 11
- Crashes reported
- 2
- Fires reported
- 11
- Injuries reported
The 2021 model year
15 complaints, the 4th most of 10 model years on file. Owners reported 0 crashes, 0 fires and 0 injuries for this year, which also has 6 recalls on file.
Electrical System, the system this article covers, accounts for 27 of 127 complaints (21%), including 6 for 2021.
Complaints by model year
| 2017 | 25 | |
|---|---|---|
| 2018 | 36 | |
| 2019 | 24 | |
| 2020 | 5 | |
| 2021 | 15 | |
| 2022 | 8 | |
| 2023 | 3 | |
| 2024 | 2 | |
| 2025 | 7 | |
| 2026 | 2 |
Most-reported systems
- Engine — 38
- Electrical System — 27
- Engine And Engine Cooling — 17
- Air Bags — 14
- Power Train — 13
Latest recalls for the 2021 model year
- 26V056000 — Electrical System (Jan 2026)
- 25V636000 — Electrical System (Sep 2025) — Park outside
- 23V584000 — Electrical System (Aug 2023)
Recent owner reports about electrical system
I received a recall notice dated 9/23/2025. The recall is listed as URGENT safety issue that could cause a fire. The notice instructs not to drive the car or park in garage. It has been over 6 months now and there is still no fix.
Read owner complaints →The contact called for the owner of the 2021 BMW 430I. The owner received notification of NHTSA Campaign Number: 25V636000 (Electrical System); however, the part to do the recall repair was not yet available. The local dealer was not contacted.
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.
Related Articles
2021 BMW 430i Headlight Condensation TSB SIB 63 02 22
BMW has issued Service Information Bulletin SIB 63 02 22 for 2021 BMW 430i vehicles experiencing excessive condensation in the headlights. This TSB outlines a repair procedure to replace the headlight ventilation grommets.
2021 BMW 430i PCV Extended Warranty for Engine Issues
BMW has announced an extended limited warranty for the engine crankcase pressure control valve (PCV) on certain 2021 BMW models, including the 430i. This extension covers defects in materials or workmanship for 15 years or 150,000 miles, whichever comes first, from the vehicle's original…
2021-2022 BMW Software Error Affects Remote Features and Owner's Handbook
Owners of certain 2021-2022 BMW 4, 5, 7, and 8 Series vehicles may experience issues with Remote Software Upgrade (RSU), Remote Support, and the Integrated Owner's Handbook due to a software error. This manufacturer communication, NHTSA ID 10230734, details the problem.
2021-2022 BMW 430i/M440i Wind Deflector Guide Stem Breakage
BMW has identified an issue where the wind deflector guide stem in 2021-2022 430i and M440i models can break during removal or installation. This manufacturer communication (NHTSA ID 10228432) advises technicians on this potential problem to prevent damage during service.
2021-2022 BMW 3 & 4 Series Restraint System Warning
Owners of 2021-2022 BMW 3 and 4 Series vehicles may experience a 'restraint system' check control message and a permanently lit red airbag warning light. This issue is often accompanied by specific knee airbag fault codes stored in the ACSM control unit.
Leave a comment
Comments are moderated and may take a moment to appear. Only your first name and the initial of your last name are shown publicly.
Comments
Be the first to comment.