
The ignition tutorial for the E300 is as follows: 1. Open the driver's side door and get into the car; 2. Release the electronic parking brake switch, press the brake pedal all the way down, and start the engine; 3. Press the one-touch start button, and all the dashboard lights will illuminate. Taking the 2021 Mercedes-Benz E300 as an example, it belongs to the mid-to-large-sized car category, with body dimensions of: length 5078mm, width 1860mm, height 1484mm, and a wheelbase of 3079mm. The 2021 Mercedes-Benz E300 features multi-link independent suspension both at the front and rear. It is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 184PS, a maximum power of 135kW, and a maximum torque of 280Nm, paired with a 9-speed automatic transmission.

I've been driving the E300 for a while, and starting it is actually quite simple. After getting in the car, don't rush to step on the accelerator. First, make sure the floor mat isn't blocking the brake pedal, and just keep the key on you—no need to take it out. Press down firmly on the brake pedal with your right foot and hold it, while simultaneously pressing the engine start button with the engine icon on the center console. At this point, you'll hear the engine make a crisp starting sound, and all the indicator lights on the dashboard will light up and then turn off. Don't worry if the sound is louder for the first two or three seconds during a cold start in winter—it's normal. When warming up the car, I like to wait until the tachometer needle drops to around 800 RPM before shifting gears to protect the transmission. There's also a small detail: the steering wheel will automatically unlock from its locked position, and the rearview mirrors will adjust to your last set position.

Last time when accompanying my friend to pick up the E300, the salesperson specifically emphasized checking the dashboard for warning lights before starting. The first thing to do when sitting in the driver's seat is to adjust the seat position properly, otherwise the electric mirror adjustment might be inaccurate. Always ensure the seatbelt is securely fastened before ignition, or the auto-hold function may malfunction. When pressing the brake pedal, listen for a distinct 'click' feedback sound, indicating the brake pedal has triggered the start switch. There's no need to hold the start button; just press it all the way down and release immediately - successful ignition is confirmed when the engine RPM rises. If there's no response, it might be due to low key ; try placing the key near the center console cup holder area and attempt again. After starting, don't rush to drive off - wait for the vehicle's self-check to complete, especially until the default auto start-stop function indicator light turns off before moving.

The E300's keyless start system is designed with great user-friendliness. Simply approach the car with the key on you, and pulling the door handle will unlock it directly. Once inside, press the brake pedal firmly and hold the start button with your index finger for about a second—no need for excessive force. At the moment of ignition, you can feel the gear shift lever automatically unlocking, unlike older models that required manual release of the gear lock. The most convenient feature of the new model is its ability to link with driving modes; for instance, setting it to Sport mode will result in a slightly higher startup RPM. If the car fails to start, don’t panic—check these three things first: ensure the brake pedal is fully depressed, verify that the screen displays the correct key position, and confirm the electronic gear is in Park (P). Occasionally, signal interference in underground garages may require repeating the process twice. If a yellow start icon appears on the dashboard, it’s time to visit the dealership for inspection.

The ignition process actually takes just five seconds: open the car door, sit down, close the door, press the brake pedal all the way down, and press the start button until the engine runs. However, many people overlook the preparatory steps, especially beginners who often forget to release the electronic parking brake. After starting, pay attention to the sound of the compressor, as the automatic air conditioning will begin working immediately. In summer, it's recommended to open the windows for ventilation before ignition to avoid a wave of hot air. In winter, don't rush to turn on the heater when starting a cold engine; wait until the temperature gauge needle moves. Remote start can also be operated via the APP, which is particularly useful for pre-cooling or heating the car. Occasional startup delays are part of the normal protection program, as the electronic system checks oil pressure. For vehicles that have been parked for a long time, it's advisable to press the accelerator slightly to warm up the engine for a minute or two after starting.


