
The OBD interface of the Excelle is located behind the coin box on the driver's side. The function of the car's OBD is to monitor the engine's electronic control system, vehicle function modules, and exhaust treatment system during operation. When a system in the car malfunctions or the exhaust exceeds the standard, the fault light will trigger an alarm. Taking the 2020 Buick Excelle as an example, its body dimensions are: length 4468mm, width 1765mm, height 1469mm, with a wheelbase of 2611mm and a fuel tank capacity of 40L. The 2020 Buick Excelle is equipped with a 1.3L naturally aspirated engine, delivering a maximum power of 79kW and a maximum torque of 133Nm, paired with a 5-speed manual transmission.

A seasoned driver tells you that the OBD interface of the Excelle is right below the steering wheel, just look down and you'll see it. Specifically, it's behind the storage compartment facing the driver's knee, a black trapezoidal slot. For models from 2004 to 2007, it's all there. If it's a newer Excelle after 2008, the location has changed—you'll need to look towards the passenger side, hidden inside the plastic cover on the side of the center console. When repairing cars, I often see people crawling around searching for a long time, but actually, bending down to take a look behind the storage compartment is the easiest. Remember to turn off the ignition before plugging in the diagnostic tool. Last time, a young guy forced it in and blew a fuse, costing over 200 yuan for nothing.

When I drove the 2005 Excelle, I specifically studied the OBD port location—it's inside the storage compartment below the steering wheel. You pull open that small manual holder, reach inside and feel backward, and you'll touch a trapezoidal socket with a dust cover. After the 2008 facelift, it was moved next to the glovebox on the passenger side, beneath the AC vent. Actually, all cars must have an OBD interface as it's legally required. The Excelle's location isn't particularly hard to find, much more user-friendly than some German cars that hide it near the accelerator pedal.

Excelle Owner's Test: Lift the storage compartment near the driver's left leg, and you can feel the trapezoidal slot by reaching in about three centimeters with your finger. In the newer models, it's located behind the center console panel on the passenger side, requiring the removal of two screws. The OBD port is very close to the fuse box, so don't confuse them. For models from 2004-2007, the port is on the driver's side; for batches after 2008, it's on the passenger side. When using a diagnostic tool, keep the power on but do not start the engine, otherwise, the data stream won't be read. Some models will automatically power off after half an hour with the ELM327 plugged in, which is normal.

Helped my neighbor locate the OBD port for his 2012 Excelle - it's under the glovebox on the passenger side. Remove the plastic trim panel to find the black trapezoidal port mounted on a bracket. For older models, check deeper behind the driver's side storage compartment (use your phone's flashlight). The 16-pin port requires careful alignment - don't force the scanner. Nowadays basic OBD-II readers cost around $10 online, letting you check fault codes via smartphone apps. Note: While 2007 and 2009 models share the same port location, their diagnostic protocols differ.

I've repaired hundreds of Excelle models and summarized two locations: For 2004-2006 older models, simply flip down the small box under the steering wheel's lower left side - the interface is attached to the back panel of the box, just feel for it with your fingers. For post-2007 models, it moved to a deeper groove in the same position, requiring removal of the plastic storage box component. The 2008 facelifted version relocated to behind the center console trim on the front passenger's left side, needing two Phillips screws removed. All versions are located close to the cabin air filter - be careful not to drop screws inside during operation. Remember to turn the key to position II before connecting the diagnostic tool, otherwise it won't read data from the body control module.


