
Some models feature an automatic door locking function, which can be activated by setting the automatic locking while driving in the iDrive system. Alternatively, you can use the smart key to lock the car after parking. Below is additional information about the BMW 3 Series: 1. Exterior Configuration: The long-wheelbase models come standard with features such as a panoramic sunroof and LED headlight clusters (including adaptive headlight function). The launch edition offers a Luxury Design Package, while the other three configurations provide M Sport Package, M Aerodynamics Kit, etc. 2. Interior: The new BMW 3 Series long-wheelbase version largely retains the design of the overseas model. For example, it features a new floating LCD screen, a redesigned electronic gear lever, and an M-branded three-spoke multifunction steering wheel. In terms of power, the new BMW 3 Series long-wheelbase version is equipped with the latest B-series 2.0T engine (B48B20B type), delivering the same 184 horsepower as the current 320i/Li models.

I've been driving a for several years, and the locking method is quite simple. Just press the lock button on the remote key—the one with the lock icon. After pressing it, the car lights will flash once, and the side mirrors will automatically fold, indicating that the car is locked. If the car has a keyless entry feature, it's even easier—just hold your finger on the sensor area on the outer side of the door handle for one second to lock, no need to press the key. Before getting out, remember to check the windows and sunroof. If you find a window not fully closed, press and hold the lock button on the key for 5 seconds to automatically roll up the windows. When making a temporary stop at a gas station, I prefer using the mechanical key to lock the driver's door—just remove the metal key blade from the remote key, insert it into the door handle lock, and turn it. One important reminder: always pull the door handle to confirm after locking to avoid signal interference causing a false lock.

When I first got my , I studied the locking functions, which mainly involve three steps. First is the remote key. The most common method is a short press of the lock button on the key—just wait for the beep to confirm it's done. If the key battery is dead, don’t panic; bring the key close to the door handle and press the lock button for emergency unlocking. Next is the smart touch locking—lightly touch the indentation on the driver’s side door handle for half a second until you hear a click. Lastly, there’s the backup plan. For example, when hiking in the wild, I use the mechanical key to lock the car—pull out the metal key from the remote, insert it into the mechanical lock under the driver’s door, and turn it half a rotation. After locking, always check if the side mirrors fold in, as this is the most obvious confirmation. On scorching summer days, I leave a slight window gap for ventilation, but remember to disable the auto-window-close function in the iDrive system to avoid accidental triggering.

As someone who frequently test drives BMWs for friends, the locking operations vary significantly by model. Older models like the E90 series can only be locked via the key fob buttons, while newer models like the G20 with Comfort Access simply require touching the textured area on the door handle. Models with keyless entry can also be set to auto-lock when leaving the vehicle—just enable the feature in the iDrive menu to automatically lock the doors when the key is 1-2 meters away. For smarter remote locking, download the My app, which allows you to lock forgotten doors even from the supermarket. Key tip: After locking in rainy weather, check the sunroof seal—BMW window gaskets are prone to aging. If the car doesn’t respond to locking, first ensure the gear is in Park (P), or the system will prevent the doors from locking.

Last week, I helped my neighbor set up his new , and the locking method is actually quite particular. The standard operation is to press the central lock button on the remote key, but many people don't know that holding it down can close all the windows. There's also a hidden trick: after enabling the convenience locking function in the system settings, touching any part of the door handle with the key will lock the car. For older models, special attention is needed when locking—you must turn off the engine first before pressing the key, or it won't work. If the key is experiencing interference, manually locking the driver's door is the safest option by pulling out the key blade, inserting it into the slot on the left side of the handle, and rotating it 90 degrees. It's recommended to test the rear door after locking, as some models have anti-miscontact sensors on the front doors, making the rear door a better indicator of the actual locked status.

Having seen many BMWs in repair shops, there are actually patterns to their locking issues. Most of the time, simply pressing the lock button on the key fob works, but the key is to watch out for signal interference. For instance, key fob failures are common near 4S dealerships—in such cases, locate the mechanical keyhole on the front left door handle, pull out the hidden metal piece from the end of the key, insert it, and turn it clockwise by 15 degrees for a physical lock. Models with touch functionality are even simpler: when locking, place your index finger flat on the three horizontal grooves on the door handle and wait for a faint motor sound to confirm success. For remote locking, BMWs post-2018 support app control, but you’ll need to bind your account in the car’s system first. A tip: after each lock, observe the number of flashes from the hazard lights—one flash is normal, while three flashes signal an anomaly.


