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Mercedes-Benz Warning Lights

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

No one likes to see an illuminated warning light on their dashboard. Some warning lights aren’t dire, but others like the check engine light or ABS light require the attention of certified technicians. Mercedes-Benz warning lights specifically can be confusing for some because they sometimes refer to brand-exclusive features like ATTENTION ASSIST®. To make it easier for San Bernardino drivers to decode lit dashboard lights, Mercedes-Benz of Ontario has put together the following guide.

Common Mercedes-Benz Dashboard Symbols & Meanings

ABS Light

Icon: Circle with “ABS” in the center and one curved line on either side

Meaning: The Anti-Lock Brake System is deactivated, as well as ESP®, BAS®, Electronic Brake Force Distribution, and Hill-Start Assist. You can slow and stop, but the system won’t sense or respond to emergency braking or vehicle instability.

Steering Wheel Light

Icon: Steering wheel with an exclamation point next to it

Meaning: Power steering isn’t working. You’ll need to forcefully

Battery Light

Icon: Battery with a plus and minus sign

Meaning: The battery isn’t charging properly. This could be due to a malfunctioning alternator, poly-v belt, or a problem with the electrical system.

Brake Wear Light

Icon: Circle with a dotted line on either side

Meaning: It’s time to replace the brake pads and/or brake rotors. To avoid vehicle damage and safety hazards, schedule a brake replacement ASAP.


Icon: Steaming cup on a saucer

Meaning: ATTENTION ASSIST® monitors your driving behaviors for signs of sleepiness. This light means it’s time for a break.

Check Engine Light

Icon: Engine

Meaning: This light can signify an issue with the engine itself, fuel or fuel injection systems, ignition, or exhaust. High emissions could have also caused the engine to enter emergency mode.

Glow Plug Light

Icon: Yellow coil

Meaning: Glow plugs heat the cylinders inside a diesel engine, such as one inside the Sprinter Van. When this light is on, the glow plugs are in the process of heating the cylinders.

Don’t Ignore Illuminated Mercedes-Benz Dashboard Warning Lights!

Is your dashboard displaying any of the above warning lights or another icon not listed above? For more information about Mercedes-Benz dashboard symbols and meanings, contact us or schedule a service appointment at Mercedes-Benz of Ontario, located a short drive from Eastvale and Rancho Cucamonga. Before you book, take a moment to browse our current service specials and parts specials for savings opportunities.

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3787 East Guasti Road • Ontario, CA 91761

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Mercedes-Benz of Ontario

3787 East Guasti Road Ontario, CA



Phone: (909) 212-8400

3787 East Guasti Road Ontario, CA


Phone: (909) 212-8500

3787 East Guasti Road Ontario, CA


Phone: (909) 212-8500

3787 East Guasti Road Ontario, CA
34.0657451 -117.5712687
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Mercedes-Benz of Ontario
Mercedes-Benz of Ontario
3787 East Guasti Road
Ontario, CA, 91761 United States
Mercedes-Benz of Ontario 34.0657451, -117.5712687.