What is the reason for the erratic jumping of the door lock latch in the 11th-generation Excelle?
3 Answers
It could be due to a damaged small switch inside the central control motor of the left front door. Below is some relevant information about the 11th-generation Excelle: 1. Exterior: The new Excelle mainly improves on details, with the grille's decorative strips having a stronger three-dimensional effect, the lower air intake adopting an integrated design, and slight adjustments to the structure inside the headlight cavity. Compared to the older model, the focus of the new Excelle is on the upgraded powertrain system, with improvements in fuel economy helping to enhance its market competitiveness. 2. Fuel consumption: The new Excelle 1.5L DVVT manual transmission has a combined fuel consumption of 6.6 liters per 100 kilometers, while the automatic transmission version consumes 7.6 liters. Compared to the older 1.6L manual and automatic models, this represents a reduction of 1.1 liters and 0.4 liters, respectively. According to the latest official news, the upcoming new Excelle will be equipped with a 1.5L DVVT engine to replace the older 1.6L engine, and the transmission system will also be upgraded. The 1.5L DVVT engine will be paired with either a 5-speed manual or a 6-speed automatic transmission, with the older 4AT transmission no longer being used.
I drove an 11-model Buick Excelle for several years and was really frustrated when encountering the issue of door lock latches acting up. This is usually caused by a faulty central locking module—such as unstable signals due to short circuits or poor contact in the wiring—or worn mechanical parts inside the lock cylinder causing erratic movements. I experienced this myself once, and it was more noticeable in humid weather. At first, I thought the remote key was broken, but replacing the battery didn’t help. Later, it turned out to be an aging module. The repair wasn’t difficult; spending some money to replace the module fixed the issue. Don’t forget to check the door connectors and wiring harnesses, as older models tend to accumulate dust. My advice is not to ignore minor issues—fix them early for peace of mind and avoid being stranded with a door that won’t open. For cars, regularly lubricating the door lock components can extend their lifespan.
My Excelle is also the 2011 model, and this issue of the locks randomly jumping is quite common. Simply put, it's mostly due to wiring or a central control system failure—short circuits or interference can cause the locks to repeatedly lock and unlock. One winter, my car had the same problem, likely because the sensors in the locks were dirty or malfunctioning. You should first check the remote control's battery; if that doesn't help, look at the fuse box for any loose connections. Fixing it isn't expensive—just a few dozen yuan for a new module to replace it. But don't wait for it to fix itself; it would be terrible if it locked up when you're out. By the way, cleaning the dust inside the door might prevent this. I always spray some lubricant when washing my car, and it works well—gives me more confidence on long trips.
