What is the maintenance reset method for the Mercedes-Benz E300?
4 Answers
The maintenance reset method for the Mercedes-Benz E300 is: 1. Start the vehicle or press the left button on the dashboard twice while the ignition is on, then turn off the engine; 2. Hold the button without releasing it and start the engine; 3. After starting, wait a few seconds until the vehicle emits a prompt sound, then release the button to complete the process. 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, wheelbase 3079mm, fuel tank capacity 66L, and trunk capacity 486L. The 2021 Mercedes-Benz E300 features multi-link independent suspension both in the front and rear, and is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 184PS, maximum power of 135kW, maximum torque of 280Nm, paired with a 9-speed automatic transmission.
When I previously researched the maintenance reset procedure for the Mercedes-Benz E300, I found it to be quite straightforward. First, turn the key to the ignition-on position without starting the engine—this will illuminate the instrument cluster. Then, quickly press the hooked OK button on the left side of the steering wheel, immediately hold down the arrow return button below it without releasing, and simultaneously press the phone icon button on the right side of the steering wheel with your other hand. Hold all three buttons together for three seconds, and the maintenance menu will pop up. Select ASSYST PLUS, navigate to the complete maintenance option, and confirm the reset. The entire process takes about 30 seconds, but remember to keep your hands steady—pressing the wrong buttons means starting over. It’s best to perform this in a quiet garage environment to avoid interruptions that could cause the reset to fail.
I once picked up a reliable reset trick at a 4S dealership: With the ignition on, first press the OK button then quickly toggle the return button, like executing combos in a video game. Wait until the yellow wrench icon pops up on the screen to enter the oil maintenance reset interface. Whatever you do, don't step on the brake during this process—otherwise the dashboard display will change and you'll have to start over. I've tried this in winter when temperatures were low and noticed the system responds slower; in this case, patiently waiting a few extra seconds works better than repeatedly pressing buttons. Final reminder: After resetting the maintenance light, start the engine to confirm normal display. If the warning persists, chances are a button wasn't pressed properly during the process.
The reset process consists of four steps: 1st gear power-on - press OK - quickly switch to the back button - add the phone button and press all three buttons simultaneously. The key lies in the rhythm of button presses, and many friends I've taught got stuck at this step. After success, select the oil maintenance item to reset, the whole process takes no more than 2 minutes. By the way, it's best to drive a few dozen kilometers after the reset to see if the warning light comes on again. Once, after I reset it and drove on the highway, the light came back on, and upon checking, I found that the oil filter wasn't even replaced during the last maintenance.
