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Home / Understanding Mercedes-Benz Dashboard Warning Lights

Frequently Asked Question: Mercedes-Benz

Mercedes-Benz Dashboard Warning Lights - What Do They Mean?

Low fuel dashboard warning light glowing

Understanding Mercedes-Benz Dashboard Warning Lights

As a proud owner of a Mercedes-Benz, you’re driving one of the most sophisticated and technologically advanced vehicles on the road. However, with advanced technology comes the responsibility of understanding the various dashboard warning lights that can illuminate occasionally. These lights are crucial in ensuring your vehicle remains in optimal condition. At Mercedes-Benz of Arrowhead in Peoria, AZ, we want to help you understand what these warning lights mean and what actions you should take when they appear.

Ignoring the warning lights on your Mercedes-Benz dashboard can lead to severe problems. These lights are designed to alert you to potential issues that require attention, ranging from minor checks to immediate actions. On this page, our service team at Mercedes-Benz of Arrowhead provides insights into the meaning of these lights and the steps you should take when one pops up.  


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What are the Mercedes-Benz Dashboard Warning Lights, and What Do They Signify?

Regardless of whether you drive an A-Class, C-Class, GLE, or any other latest Mercedes-Benz model, the warning lights follow a universal traffic light color system: 

Green: Indicates the system is working correctly or currently in use.
Yellow: Suggests something is not working correctly and should be checked soon.
Red: Signifies a severe and potentially dangerous problem requiring immediate action.

Mercedes-Benz Dashboard Warning Symbols

Parking Brake and Brake Fluid Warning Light: This red light may appear if the parking brake is fully released or if there’s an issue with brake fluid levels. If the ABS warning light also illuminates, it signals a malfunction in the braking system. It’s crucial to stop driving immediately and check the brake fluid or contact our service team. 

Check Engine Warning Light: A flashing check engine light often accompanies symptoms like reduced power or stuttering. This could indicate various issues, from minor faults to significant mechanical problems. Get it checked as soon as possible to avoid further damage.

Low Engine Oil Warning Light: This light signals high oil temperature or low oil levels/pressure. Stop the car immediately to check and top up oil levels. If the problem persists, the oil pump may need servicing.

Low Tyre Pressure Warning Light: Modern Mercedes-Benz vehicles have tire pressure monitoring systems. If this light appears, check and inflate the tires promptly. Low pressure can affect vehicle handling and safety.

Mercedes-Benz Warning Symbols
Mercedes-Benz Warning Symbols

Power Steering Warning Light: This light signals a problem with the power steering. If it stays on after restarting the car, visit our showroom promptly. Driving with a power steering issue makes maneuvering the car difficult and unsafe. 

Exhaust Particulate Filter (Diesel) Warning Light: For diesel Mercedes-Benz vehicles, this light indicates a problem with the exhaust particulate filter, potentially due to a blockage. Continuing to drive with this light on can cause severe damage and release harmful emissions. Seek service immediately. 

Diesel Exhaust Fluid Warning Light: A yellow light means the diesel exhaust fluid is low. If it turns red, the engine won’t start once turned off. Top up the fluid as soon as possible to avoid being stranded.

Coolant Levels Warning Light: This yellow light alerts you to low coolant levels. Refill the coolant to prevent engine overheating and potential damage. Always wait for the engine to cool down before adding coolant. 

Engine Overheating Warning Light: Stop driving immediately if this red light appears. Overheating can cause irreparable engine damage. Check the coolant levels and allow the engine to cool before proceeding. 

Battery Charge Warning Light: A red light indicates the battery is not charging, possibly due to an electrical fault. While the car may continue running, check the battery to avoid a breakdown. 

Anti-Lock Brake System (ABS) Warning Light: The ABS warning light suggests a problem with the anti-lock braking system. While you can still brake normally, have it checked soon. If it’s accompanied by the brake warning light, stop driving immediately. 

Brake Pad Wear Warning Light: This light means the brake pads are too thin and need replacing. Delaying this can compromise braking efficiency and safety.

Electronic Stability Program (ESP) Warning Light: If the ESP light stays on, there’s an issue with traction control. Restart the engine to reset. If it persists, consult our service team. 

Glow Plug Warning Light (Diesel): This light appears during engine warm-up in diesel cars. If it flashes, the glow plugs may need replacing. Get this checked promptly to ensure a smooth engine start. 

Airbag/SRS Warning Light: This light indicates a problem with the airbag system or seat belt pretensioners. Immediate attention is needed to ensure these critical safety features function correctly.

Bulb Warning Light: This light indicates a malfunctioning bulb. Replace it promptly to maintain safety and compliance with road regulations.

Hybrid Fault Warning Light: This light indicates a fault in the hybrid system. Stop safely and restart the car to reset it. If the issue persists, contact our experts.

Attention Assist Warning Light: This light reminds you to take a break if the system detects drowsiness or fatigue, enhancing your safety during long drives.

Engine Overheat Warning Symbol

Remote Vehicle Diagnostics

With Mercedes me, our remote diagnostics service can retrieve data about your car’s condition, allowing our service teams to prepare in advance. This ensures quicker, more efficient service when your vehicle is booked in. 

Mercedes-Benz Service Plans at Mercedes-Benz of Arrowhead

At Mercedes-Benz of Arrowhead, we offer various service plans that fix your servicing costs for the plan's duration, regardless of part and labor price increases. Rest assured, your vehicle is in the hands of expert technicians at our official workshop.

Understanding and responding to your Mercedes-Benz dashboard warning lights is essential for maintaining your vehicle’s performance and safety. If you have any concerns or questions, visit Mercedes-Benz of Arrowhead in Peoria, AZ.

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