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What Should I Do If My Mercedes-Benz Warning Lights Come On?

Mercedes-Benz dashboard


Your Mercedes-Benz has a sophisticated system designed to alert you to potential issues through dashboard warning lights. These lights use symbols and colors to communicate a range of mechanical issues. What should you do if your Mercedes-Benz warning light comes on? After determining the severity of the problem, you can visit us at Mercedes-Benz of Scottsdale in Scottsdale, AZ, and our expert technicians will assist you with any warning light concerns.  

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Immediate Steps to Take When Warning Lights Come On

When a warning light illuminates your Mercedes-Benz dashboard, it is crucial to understand what it means and take appropriate action. Here is a quick guide to comprehend the color-coded warning lights:  


Red Warning Lights: These indicate serious issues that require immediate attention. If a red light comes on, find a safe place to pull over and contact our service center immediately.  


Yellow or Amber Warning Lights: These suggest a problem that needs attention soon but isn’t an immediate emergency. You can continue driving, but visiting our service center at the earliest opportunity is essential.  


Green and Blue Warning Lights: These are informational lights, indicating that a feature or technology is active. No immediate action is required.  

Mercedes-Benz warning light


Mercedes-Benz warning light

Mercedes-Benz Dashboard Symbols and Meanings

While your owner’s manual is the best resource for understanding specific warning lights, below are some common symbols and their meanings:

Safety Alerts and Routine Reminders 

  • Washer Fluid Reminder: Indicates that windshield washer fluid is low and needs to be refilled. 
  • Fog Lamp: Reminds you to turn off your brights after use. 
  • Security Alert: Indicates a door is ajar, or an ignition switch lock is malfunctioning. 
  • Airbag Fault: Warns of a fault in the airbag system, necessitating immediate service to ensure airbag deployment in a collision. 

Engine Issues 

  • Service Vehicle: This signifies an issue in the vehicle’s electrical system, potentially involving the battery, starter, or alternator. 
  • Coolant Temp Warning: Alerts you to abnormal coolant temperatures due to low coolant levels, a malfunctioning fan, or a leak. 
  • Reduced Power Warning: Indicates a potential malfunction in the engine, reducing power output. Immediate inspection is recommended. 

Brake Issues

  • Traction Control or ESP®: Indicates that the electronic stability system has engaged on unstable terrain. 
  • Brake System: Warns of various brake system issues, including low brake fluid, ABS issues, or brake malfunctions.


Get Your Mercedes-Benz Inspected Today!


If a warning light appears on your Mercedes-Benz dashboard, do not wait. Bring your vehicle to Mercedes-Benz of Scottsdale in Scottsdale, AZ. Our experienced technicians will provide the care and expertise your vehicle deserves, ensuring it remains reliable and safe on the road. Visit us today and experience the exceptional service that keeps your Mercedes-Benz running smoothly.

technician looking under the hood of a MB
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