Where is the central control module of the 09 Excelle?
4 Answers
The central locking control box of the Excelle is located under the handbrake lever, inside the center console. There is one central control motor in each of the four doors. If the control box needs to be replaced, computer matching is required. Direct replacement may cause the remote control to malfunction. Below is an introduction to the control box: 1. Control box structure: The central locking control box has 8 leads. The red and black wires are mainly connected to the positive and negative terminals of the battery, while the others are for central locking wiring. The central locking control box is primarily responsible for controlling the door lock switches and the door lock actuator functions. The main switch is mostly located on the left side of the driver's door, while the sub-switches control individual doors. 2. Locations of other models' control boxes: The location of the Excelle's central locking control box is not fixed and depends on the specific model. Some are located under the front passenger seat, some on the left side of the dashboard, and others inside the center console. Additionally, the central locking system mainly relies on weak signals from the remote key to achieve the remote opening and closing of the door locks. Successful locking will be indicated by feedback from the car lights and horn.
The central control module of the 2009 Buick Excelle is usually hidden behind the dashboard area. I've driven this car and checked similar issues before—its location is basically under the steering wheel near the glove compartment. You'll need to remove the glove box or the lower interior trim panel to see it. It's fixed to the vehicle frame near the firewall to protect the module from external influences. This placement is designed to be close to the wiring harnesses for the audio system, air conditioning, and buttons, reducing wire length and avoiding signal delays. If the module malfunctions, it's often due to dust accumulation or moisture causing a short circuit. I recommend not attempting DIY removal, as the module is connected to airbag sensors, and incorrect handling could trigger a hazard. When taking it to a professional repair shop, they can also check for wiring harness aging—saving money, hassle, and ensuring safety. The location is quite standard for the Excelle model, and the manual provides detailed diagrams, but the 2009 version has a more compact interior, making access slightly more difficult.
I used to own a 2009 Buick Excelle. When the center console malfunctioned and I took it for repairs, the mechanic mentioned that the module is located inside the dashboard, right where your knees point when sitting in the driver's seat. Opening the glove box reveals it, attached to that metal bracket, designed this way for easy connection to various controllers. The position is a bit deep, but not hard to find—just avoid forcefully pulling the interior trim to prevent scratches. Module failures often occur due to loose mounting clips or heat deformation. Placing it here allows for better heat dissipation. Relatedly, during regular maintenance, check for dust accumulation in the area since it controls functions like the AC. Excessive dust can hinder cooling and cause malfunctions. I recommend inspecting the wiring harness connectors when servicing the fuel system to save future hassle.
When I worked on the 09 Excelle, I confirmed that the central control module is located in the central area under the dashboard, near the rear of the glove box. Its position facilitates connection to the controller wiring harness, but maintenance requires the removal of interior trim components. The module is fixed there to integrate systems and reduce potential failure points. Avoid tampering with it yourself, as it's easy to damage the wiring.
