Mercedes e300l fault code

Mercedes-Benz starts the engine. Please refer to the user manual. What's the matter?

Please refer to the owner's manual for the failure of starting the engine of Mercedes-Benz. The car is now a very convenient means of transportation, which is used by many families, but there are always some problems when it is used. Let's follow me to see what the user manual refers to when Mercedes-Benz starts the engine. I hope it will help you.

Please refer to the owner's manual to find out what happens when Mercedes-Benz starts the engine. 1 When the words "Start the engine and participate in the user manual" are prompted by the instrument in the car, it proves that your car battery is abnormal and needs to be checked, and you will receive a text message.

So what causes the battery to be abnormal?

1, car owners often use vehicles for short trips, or often turn off the engine to listen to songs and radio. For example, they drive twice a day, each trip is less than 5 kilometers, and the distance is too short to fully charge the battery, so the battery has been exhausted and the supply is not enough. It is recommended to run more on weekends. For the problem that the mileage of each car is too short, you can only move the motor car more every day. If you want to leave it for a long time, you can buy a charger to charge the car for one night.

2, energy system failure, specifically:

A, battery sensor failure;

B, generator and its line problems;

C, SAM control unit failure;

D, battery aging storage capacity is not good, need to be replaced;

E, the vehicle dormant current is too large or unable to enter the dormant state;

F, battery, battery sensor, SAM control unit terminals, wiring problems.

Mercedes-Benz starts the engine. Please refer to the user manual for details. 2 Mercedes-Benz E-class throttle cleaning method:

1. Prepare a screwdriver, a screwdriver, a cleaning agent, a towel and gloves (because the cleaning agent is corrosive);

2, remove the engine cover, the engine cover can be removed by pulling vertically, remember not to pull to the side;

3. Open the engine cover, and the position of the throttle will be clearly visible. To remove the throttle valve, you must first remove the hose connecting the air cleaner and the throttle valve. Both ends of the hose are fixed with circular iron hoops, and the iron hoops are fixed with screws. Loosen the screw to pull out the hose. After loosening the screw, hold one end of the hose with both hands and pull it back hard to remove the hose;

4. After removing the hose, you can see the throttle valve. At this time, the periphery of the throttle is generally not dirty, but it is really dirty inside. If you want to see the situation inside, you need to unscrew the key door, open the vehicle without stopping, and the throttle will open after another person steps on it; There will be a plug next to the throttle, which needs to be unplugged before removing the throttle. For vehicles that don't unplug often, the plug may be tight and difficult to unplug. At this time, we can pry around the plug with the help of a small screwdriver, and it will be easy to remove after the whole is loose;

5. After removing the plug, the next step is to remove the throttle. The throttle is usually fixed with four screws. First remove the lower screws, and then remove the upper two screws. After removing the screws, the throttle can be removed.

6. Wear gloves, install the nozzle for cleaning spray, and aim at the inside of the throttle. After all spraying is in place, it should be wiped with cotton cloth;

7. Install in the reverse order of disassembly. When installing and disassembling, put a towel under them to prevent things from falling and the throttle from touching the four corners, and tighten diagonally. Plug in two electronic plugs and install the pipeline. Then connect the positive battery (tighten). Press the plastic cover and plastic box of the air inlet. Cover the hood, enter the cab, fasten the key, shift to second gear, (don't start the car) stay for two minutes, the engine computer performs self-inspection, and then repeat it twice. If there is nothing wrong with the dashboard light, start the car.