BMW E90 E91 LCI Flat Cable Wiring Wire CAS Start Stop ECU Loom 7222633

The BMW E90 E91 LCI Start Stop Wire Harness Cable is an original part from the Wires, Harnesses, and Connectors group, designed to support the Start/Stop button function in post-facelift BMW 3 Series models. It ensures proper connection of the electrical system to the control module, providing stable engine starting and convenient engine ignition.

Specifications and technical data

• SKU: 7222633-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7222633
• Substitutable numbers: 7222633, 61357222633
• Category: Wiring Harnesses, Cables & Connectors

Application and Function in the BMW Electrical System

The presented wire harness is a component of the system responsible for signal transmission between the Start/Stop button and the relevant control modules in the BMW 3 Series E90/E91 LCI. A correctly selected harness in this area is crucial for:

• stable engine starting using the Start/Stop button,
• safe transmission of control signals within the dashboard,
• maintaining proper communication with the vehicle's electronics.

Thanks to the use of an original BMW solution, the harness maintains the correct wire routing geometry and compatibility with factory connectors, which reduces the risk of installation errors.

Construction, Compatibility, and Fitment

This harness belongs to the Wires, Harnesses, and Connectors group, meaning it is designed for operation in the demanding environment of the cabin and around the center console. The harness construction is adapted to factory mounting points, and the connectors are prepared to work with original BMW sockets, without requiring any modifications to the existing wiring.

Selecting the correct part is facilitated by the presence of a dedicated OEM part number and associated interchangeable numbers, allowing for precise verification of compatibility with your specific vehicle configuration. This is particularly important when working with the Start/Stop system, where an incorrect wire can lead to electronic errors or starting problems.

Benefits of Using an Original BMW Harness

Using the original Start/Stop wire harness in the BMW E90/E91 LCI offers a range of practical service and user benefits:

• Factory Fitment – the harness is designed to work with original connectors and mounting points, simplifying installation and reducing labor time.
• Stable Start/Stop System Operation – proper signal transmission minimizes the risk of random errors, starting issues, or incorrect button functionality.
• Electrical System Safety – maintaining factory specifications for wires and insulation promotes long-term, predictable operation.
• Consistency with Other BMW System Components – no need for cutting, soldering, or adapting non-original connectors.

Condition, Installation, and Service Application

This part is from the BMW range and is primarily intended for service applications: replacing a damaged harness, repairing wiring after interventions around the center console, or upgrading the starting system. By maintaining the original wire geometry, installation is orderly, allowing the harness to be routed according to factory paths.

Before installation, it is recommended to verify compatibility with your specific vehicle equipment version and check the condition of the connectors in the car. A correctly selected and installed harness will restore full Start/Stop button functionality without the need for additional wiring modifications.

System Expansion and Related Part Selection

If you are planning a comprehensive repair or upgrade of the electrical system area in your BMW and need other parts from the same group, such as additional harnesses, signal wires, or service connectors, check the available parts in the BMW Wires, Harnesses, and Connectors category.

For those considering vehicle modifications using used components, practical tips on safely selecting and installing used parts may be useful – you can find them in the article Tuning with Used Parts – How to Gain Performance Without Losing a Fortune.