
A6's automatic locking is an auto-lock feature that engages when the speed exceeds approximately 20 km/h, automatically locking the doors. However, it does not automatically lock after exiting the vehicle. Only after manually locking and then unlocking the car, if no door is opened or any operation is performed within about one minute, will it automatically relock. Here is additional information: The purpose of the automatic locking function is theft prevention: It allows quick locking after driving, preventing door-pull robberies during traffic jams or at red lights, providing a certain level of security. Auto-locking also safeguards child passengers inside the car: It prevents young children from opening the door handles while the vehicle is in motion.

I often drive my friend's A6, which indeed has an automatic locking feature. After getting out of the car and closing the door properly, when you walk away with the key, you can hear a 'click' sound indicating the car locks itself automatically at a distance of about three to five meters. However, there are a few key points to note: first, the vehicle speed must be below 15 km/h, as driving faster won't trigger the lock; second, all doors must be closed tightly, and the trunk cannot be left open; third, you need to enable the comfort locking function in the settings. Last time, my trunk wasn't closed properly, and I only realized the car wasn't locked after walking away for a while. I recommend new owners to set up the automatic lock in the central control system right after picking up the car, so daily errands like grocery shopping or picking up kids won't be a worry about forgetting to lock the car.

The current A6's automatic locking feature is indeed thoughtful. As long as you carry the remote key, exit the vehicle, close the door, and move more than 1.5 meters away, the car will automatically lock. However, there's a technical detail many people are unaware of: if the key battery is low or placed inside a metal phone case, the signal can be interfered with. Once, I had the key in my pants pocket alongside a metal keychain, and the car failed to lock. Different model years and configurations may vary—older versions still require pressing the indented button on the door handle, while newer models are mostly fully automatic. By the way, the automatic folding of the side mirrors serves as a confirmation signal for locking.

As a female driver, I particularly love the automatic locking design of the A6. When taking my kids out, I often have my hands full with stuff. I've tested it: before locking, it emits a beeping sound and then automatically folds the side mirrors. However, there are two points to note: first, the automatic lock only triggers when the key isn't sensed in the front row; second, if there's a living being inside, the anti-trapping protection will activate and prevent locking. That time when my dog was in the car, it didn't lock successfully. The setting is in the CAR menu on the central console—just find the central door lock option and check the automatic locking feature. It's much more convenient than the traditional method of repeatedly pressing the button.

Many car enthusiasts often ask about the reliability of the auto-lock feature. Based on my personal test with a 2012 A6: if no operation is performed on the door handle within 10 seconds after exiting the vehicle, the hazard lights flash three times and the car automatically locks. The current keyless entry systems are even smarter, locking the car within 3 seconds if the key is outside the sensing range. Special attention is needed—if the main key and the spare key are placed too close together, they may be recognized as being inside the car environment. Once, I left the spare key in a small compartment in the trunk, and the main key couldn’t lock the car. It’s safest to check the door lock status icon on the dashboard for confirmation.

My experience with the A6's automatic locking is that it requires three conditions to be met: all doors must be closed, the vehicle speed must be zero and the engine must be off, and the key must be in the door's sensing area outside. A little-known fact: temporarily getting out from the passenger side won't trigger the automatic locking because the system assumes someone is in the driver's seat. I encountered this situation at the mall last time, and fortunately, the mobile app sent a notification about the car being unlocked. You can set up lock reminder notifications in the My Audi app, so even if you forget, you can handle it remotely. When you remotely start the air conditioning, it will also automatically unlock the car.


