2021-2022 BMW X3 / X4 Control Unit Error Delivery Stop

BMW AG has announced a delivery stop impacting a limited number of 2021-2022 BMW X3 and X4 vehicles. This measure, effective January 11, 2022, addresses a critical manufacturing defect in the engine control unit. The BMW X3 control unit error stems from an incorrect component installation during production.

Why This Delivery Stop Matters

This delivery stop is crucial because it prevents affected vehicles from reaching customers until a significant manufacturing defect is corrected. The engine control unit is vital for the proper operation and performance of the vehicle's engine. An incorrectly assembled control unit could lead to unforeseen issues, potentially impacting vehicle reliability and safety.

The Manufacturing Defect: Incorrect Control Unit Component

The core of this issue is a production failure that occurred between December 23, 2021, and January 4, 2022. During this period, the engine control unit in certain vehicles was mistakenly assembled with a capacitor in place of a resistor. This deviation from the intended design constitutes a BMW X3 control unit error that requires immediate attention.

Important Advisory for Dealers and Customers

BMW has issued strict instructions regarding these vehicles. Dealers are explicitly told: "Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to a Delivery Stop, until the vehicle is repaired." Furthermore, the advisory states: "Do not use or sell replacement equipment/parts subject to a Delivery Stop." This ensures that no vehicle with the identified defect is sold or delivered, and that no faulty parts are used as replacements.

What Owners Should Do

If you have purchased or are awaiting delivery of a 2021-2022 BMW X3 or X4 produced within the specified dates (December 23, 2021, to January 4, 2022), it is important to confirm with your dealer that your vehicle is not subject to this delivery stop, or that any necessary repairs have been completed. While this delivery stop primarily affects vehicles in dealer inventory, understanding this BMW X3 control unit error is important for all potential owners.

Source: NHTSA ID: 10211853