Mercedes-Benz Dashboard Warning Lights
What do the Mercedes-Benz warning lights mean? Look at the most common Mercedes dashboard lights and what they mean.
 This is the engine malfunction warning light. This light comes on when the On-Board Diagnostic (OBD) system indicates a problem with how the engine runs. It could be something as simple as a loose gas cap or a transmission problem. Use an OBD-II scanner to read the fault codes via the OBD-II port located under the dashboard on the driver’s side. Don’t ignore the check engine light; your vehicle may go limp mode. |
 Airbag Warning Light The airbag light, also known as the SRS light, lets the driver know that the system has malfunctioned. When the airbag light stays on all the time, the airbags may not deploy if you get in an accident. The airbag light may come on due to a defective seat mat sensor on the passenger seat, a defective clock spring, a stuck seat belt buckle, etc. |
 TPMS Tire Pressure Monitoring System. Check the tire pressure and add air if one or more tires have low pressure. Find a space place to park and check that you don’t have a flat tire. Check tire pressure and add air to any tires that may become low. The recommended tire pressure is found on a black sticker on the driver’s door frame or behind the fuel gas cap door. If the light remains on, the system has malfunctioned, or one of the sensors in your rim has failed. |
 Battery Warning Light The battery symbol will appear if your battery is not being charged or the alternator is not working properly. This light will come on if the battery is not getting charged, the serpentine belt is broken, the alternator is defective, or the voltage regulator is malfunctioning. |
 Seat Belt This light is reminding you that you or your passengers need to use the seat belt. |
 DEF/AdBlue Indicator This warning light means you are low on Diesel Exhaust Fluid, or DEF. Add DEF fluid as soon as possible. The AdBlue indicator was founded in 2010, and newer Mercedes-Benz models were made with BlueTec technology. The main purpose of the AdBlue fluid is to remove harmful particles from the exhaust. |
 Distance Warning The distance warning lamp will light up if you get too close to the vehicle in front of you. The warning may stay on if there is a problem with the autonomous braking function COLLISION PREVENTION ASSIST PLUS. |
 ESP / ESC This is the warning light for the electronic stability control(ESP). Try restarting the car and turning the steering wheel to the left and right. In some cases, this procedure will reset the ESP warning. This warning may come on if you recently replaced the battery or have a bad wheel speed sensor. If the light says ESP Off or ESP Off, it could be because you have pressed the ESP button on the dashboard. |
 Light Bulb Out The light bulb symbol means that one or more light bulbs are burned out. You should see a warning message in the center of the instrument cluster. If all your lights work, but you are still getting this warning, it could be due to one of the bulbs being replaced with a bulb with the wrong wattage. |
 Low Fuel Level It means that you are running out of fuel. Stop at the closest gas station and add fuel. |
 Brake Light
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 ABS Light This warning light means the Anti Lock Brake System is not working. This doesn’t mean your brakes are not functioning. This means that the vehicle may skid or take longer to reach a complete stop. If the ABS fails, ESP (Electronic Stability Program), BAS (Brake Assist), and EBD (Electronic Brake-force Distribution) will most likely be deactivated as well. All these systems depend on the ABS to function. Common problems that trigger Mercedes-Benz ABS light are the brake light switch, ABS wheel speed sensor, and defective clock spring. Use a multi-system OBD-II scanner to read fault codes from the ABS module. |
 Glow Plug The spiral symbol that looks like a spring is the glow plug light. When you first turn on the ignition on diesel models, you need to wait a few seconds for the glow plug to turn off. Once the glow plug light turns off, you can start the engine. The glow plugs are installed to warm up the cylinders so you can easily start the engine. |
 Power Steering This symbol means that the power assist is malfunctioning. When that happens, the steering wheel may be difficult to turn. The problem could be the power steering pump or a defective power steering motor in the case of electronic power steering. On older Mercedes-Benz models, the steering symbol will also come on if you have released the steering column lever to adjust the steering wheel and haven’t locked it again. |
 Engine Overheating The temperature means the engine is overheating. Don’t drive your car if it is overheating. Find a safe location and turn off the car to allow the engine to cool down. Once the engine is cooled down, you should check the coolant level. Problems that can cause Mercedes’s temperature light to come on include a bad water pump, stuck thermostat, low coolant, defective temperature sensor, etc. |
 Attention Assist |
 Brake Wear |
These are some of the most common Mercedes lights you will see on A-Class, B-Class, C-Class, E-Class, CLK Class, CLS Class, ML-Class, GL Class, R Class, GLA, GLS, GLC, GLE, and other models.
Did we forget to explain a Mercedes-Benz dashboard warning light? If so, describe one in the comments below, and we will add it to the list.
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We hope you find the Mercedes-Benz Dashboard Warning Lights guides helpful. Check these troubleshooting and repair guides for more help on your Mercedes-Benz.
My car Mercedes is showing an information message on the dashboard and it is written NO MULFUNCTIONING, so I’m worried about it and don’t know what is the meaning. C200 Compressor 2005 model