What is the reason why the Cruze car lock horn does not sound?

[OLeah]

The Chevrolet Cruze is a new generation model developed by General Motors with the goal of creating a benchmark in design and performance for compact cars, integrating global resources. Below is an analysis of the issue regarding the car lock horn not sounding: 1. Check the remote control: Verify if there is an issue with the remote control. 2. Remote control pairing: After replacing the battery or components of the anti-theft system, the corresponding remote control needs to be paired. If there are two remote controls, test whether the other remote control responds. If the other remote control responds, it may indicate that the password of this remote control is lost and needs to be re-paired; if the remote control still does not work after pairing, there may be an issue with the receiver unit or the transmitting antenna of this remote control; if the remote control unit is shielded or there is strong interference nearby, the unit may not correctly receive the electromagnetic waves emitted by the remote control, preventing control of the central locking system. 3. Other factors: If this issue occurs after the remote control has been used for a while, it may be due to insufficient battery power; if the remote control works sometimes at a distance and sometimes nearby, it may be influenced by the surrounding environment; if the remote control unit is shielded or interfered with, this problem can also occur. For example, the anti-explosion film applied to the vehicle may shield the remote control unit, and certain electrical devices in the car may cause interference.

[DeGianna]

I've encountered this situation with my Cruze. When the horn doesn't sound during locking, the most likely cause is a blown fuse. You can change it yourself with a pair of pliers from the fuse box behind the glove compartment. Another possibility is that the door isn't fully closed or the hood switch has aged, causing a false detection of being open, which prevents the horn from sounding. In older Cruze models, oxidation of the trunk lock contacts can also trigger this bug. Once, I found that the body control module had water damage - after removing the passenger side carpet, there was indeed accumulated water. Nowadays, too many aftermarket anti-theft devices can easily cause conflicts. Last time, after a friend installed a GPS tracker, the horn stopped working, and we had to reprogram the keys to fix it. All these possibilities need to be checked one by one.

[SanVivian]

I've helped neighbors fix this issue on three Cruzes. First, feel under the steering wheel to check if the horn connector is loose - the metal terminals tend to rust. A common factory design flaw is the clock spring in the steering column breaking over time. It's rarer to have no horn sound AND no lock confirmation beep. Focus on checking the BCM (Body Control Module), especially during rainy seasons when the pins oxidize easily. A clever trick is to disconnect the battery negative terminal for ten minutes to reset the system. For modified wiring, pay extra attention to aftermarket equipment with poor grounding. Last year, one car had xenon light installation interfering with signal wires - wrapping them with aluminum foil solved it.

[StPeter]

As an auto mechanic, I've handled dozens of such cases. There are mainly five situations causing the Cruze's silent locking: first, a blown fuse, specifically the 15A F19 in the fuse box; second, malfunctioning key buttons, often due to water ingress during car washing; third, incorrect door switch signals; fourth, damaged horn itself - if the multimeter shows resistance over 1 ohm, it should be replaced; finally, the anti-theft module freezing, requiring a specialized tester to reset. Pay special attention to the driver's door lock connector, where wiring harnesses are prone to bending. Last week's repair involved two wires short-circuiting due to connector corrosion.