What to Do When the Roewe RX5's Locking Horn Doesn't Sound?
3 Answers
The solution to the Roewe RX5's locking horn not sounding is: In the vehicle's onboard computer settings, select the locking option and click 'Lock On' to activate the locking horn sound function. Taking the 2020 Roewe RX5 20T Manual 4G Internet Million Edition as an example, its dimensions are 4556 mm in length, 1855 mm in width, and 1719 mm in height, with a wheelbase of 2700 mm. The body structure is a 5-door, 5-seat SUV. In terms of power, this model is equipped with a 1.5-liter turbocharged engine, delivering a maximum power of 124 kW and a maximum torque of 250 Nm, paired with a 6-speed manual transmission.
As an owner of the Roewe RX5, I know that the single beep when locking the car is a safety feature to confirm the doors are secured. My car previously encountered this issue too. The first thing to do is check the battery level of the key fob—low battery can weaken the signal and may not trigger the sound. Try replacing it with a new battery to see if it works. Second, the vehicle might have an option to disable the confirmation sound. Navigate to the security or sound settings in the infotainment menu to check if mute mode was accidentally enabled. Turn it off and restart the vehicle to see if the issue resolves. Third, a blown fuse is a common cause. Open the engine bay fuse box (its location is marked in the manual, e.g., F23 fuse) and inspect for any melted fuses. If it's blackened, replace it with one of the same rating—it only costs a few yuan. If none of these solutions work, the wiring connections might be loose or corroded, especially after driving on bumpy roads. You can use a multimeter to test the wiring, but if you lack experience, don’t force it. Safety comes first—if the problem persists, drive to a 4S shop to inspect the central module. Spending a bit to fix it is better than compromising the anti-theft system.
I've seen many similar issues after years of car repairs. Don't panic yet—first check the fuse. The horn fuse for the Roewe RX5 is usually located in the engine compartment fuse box, possibly labeled as F23 in the manual; a blown fuse indicates circuit overload. Next, test the horn itself by connecting it to an external power source—if it doesn't sound, the horn may need replacement (around a few dozen yuan). Then inspect the key fob battery, as weak power can disrupt signals; try replacing it. For settings, check if the chime switch in the infotainment system is turned off—adjust via menu or perform a software reset (turn off ignition, wait minutes, restart). Also, oxidized/loose wiring connectors are common culprits, especially in older cars; use a multimeter to test continuity. If unresolved, an ECU module fault may require professional diagnostics. Remember: delaying repairs increases theft risk—visit an authorized shop promptly.
