How to Turn on the Heater in a Mercedes-Benz?

[HarleyRose]

To turn on the heater in a Mercedes-Benz, follow these steps: 1. Press the brake pedal; 2. Press the car's one-touch start button; 3. The car's dashboard lights up, and the vehicle starts; 4. Press the AUTO button to activate the air conditioning system; 5. Press the temperature adjustment button downward to turn on the heating system. Models under the Mercedes-Benz brand include: Mercedes-Benz GLS, Mercedes-Benz GLE, Mercedes-Benz GLC, Mercedes-Benz GLA, and Mercedes-Benz CLA. Taking the 2021 Mercedes-Benz GLS as an example, it is a mid-to-large-sized car with body dimensions of: length 5214mm, width 1956mm, height 1823mm, and a wheelbase of 3135mm. The 2021 Mercedes-Benz GLS is equipped with a 2.5T turbocharged engine, delivering a maximum horsepower of 313PS, a maximum power of 230kW, a maximum torque of 400Nm, and is paired with a 9-speed automatic transmission.

[GabrielRose]

I've been driving a Mercedes for several years, and using the heater requires a step-by-step approach. First, start the car and wait for the engine to warm up for about a minute or two until the coolant temperature gauge reaches the middle position. Then, locate the climate control panel and turn the temperature knob to the red zone – setting it to 26°C or higher will heat up faster. Press the AUTO button to let the system automatically manage fan speed and airflow direction. If you don't need cold air, turning off the A/C saves fuel. Mercedes' heating system is quite efficient, but don't expect instant warmth in winter – some cool air may blow out initially. I prefer directing airflow to the footwell vents to prevent dry air from blowing directly on my face. Remember to replace the cabin air filter every six months, as accumulated dust reduces heating efficiency. For long drives, avoid setting the temperature too high to prevent drowsiness and ensure safety. These simple yet practical tips make winter driving more comfortable.

[SanPaul]

I just got a Mercedes-Benz and found the heating operation quite intuitive. First, start the engine, as the heating only works effectively once the engine is warm—usually after 1-2 minutes when the coolant temperature light goes off. In the climate control area, there's a temperature knob; turn it to the right to 28°C or higher. Press AUTO for automatic airflow adjustment or manually increase the fan speed using the buttons. Since heating doesn’t require the air conditioning, turn off the A/C button to save fuel. Mercedes models vary in interface; mine has a touchscreen, making it easier to set the temperature in the menu. The vent direction is adjustable—I recommend setting it to blow downward at the feet or use the defogging mode for the windshield. It might feel a bit unfamiliar at first, but you’ll get the hang of it after a few tries. For maintenance, I suggest cleaning the ducts once a year to extend their lifespan.

[SanSavannah]

I understand that Mercedes' heating system is based on engine heat exchange, and operation is straightforward. After starting the car, the engine coolant circulates to transfer heat to the air conditioning system. Turn the temperature controller to the heating side at a high value, such as 28 degrees, and the system automatically activates the fan. Press the AUTO button to simplify adjusting the airflow and direction, as the Mercedes intelligent system responds quickly. The key is to turn off the A/C button to reduce load, as the heating relies solely on engine heat. In newer models, touchscreen operation is equally direct, allowing more flexible temperature parameter selection. The duct design is efficient, distributing warm air evenly from the vents. Regularly cleaning the filter prevents odors. Although the principle is simple, proper maintenance can save up to 10% in energy. This design ensures comfortable and eco-friendly driving in cold weather.