What do I do if I hit a pothole in my Mercedes-Benz GL350?

Check your car for pothole damage! If you’ve recently hit a pothole (or even if you don’t remember hitting one… they can be sneaky!) check your tire treads, tire sidewalls, and wheels for damage. Potholes can also knock your car out of alignment, so have your alignment checked if you suspect you’ve driven over a rough patch of road lately.

When should I use high mileage oil in my Mercedes-Benz GL350?

Got 75,000+ miles on the odometer? Consider high mileage motor oil. High mileage oil is formulated to address the specific problems encountered by high mileage vehicles, or those with more than 75,000 miles. It can help reduce oil consumption, smoke, and emissions from older Mercedes-Benz GL350 engines.

Can I ignore dashboard lights on my Mercedes-Benz?

Don't ignore dashboard warning lights! Bring your Mercedes-Benz GL350 in for a diagnostic code scan as soon as a dashboard warning light flashes on, whether it's your check engine or battery light. Dashboard lights alert you to trouble under the hood.

2014 Mercedes-Benz GL350 Scheduled Maintenance

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Get Work Done on Your Mercedes-Benz GL350

Take care of your Mercedes-Benz GL350 and it'll take care of you. Schedule an appointment for routine maintenance today.

Schedule Maintenance

2014 Mercedes-Benz GL350 Maintenance Schedule

What is the manufacturer recommended maintenance schedule for a 2014 Mercedes-Benz GL350? Find maintenance info for your vehicle.

5,000 Miles

Maintenance check at 5000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ROTATE Tires

10,000 Miles

Maintenance check at 10000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

20,000 Miles

Maintenance check at 20000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Adblue Lines
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

30,000 Miles

Maintenance check at 30000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

40,000 Miles

Maintenance check at 40000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Adblue Lines
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Air Filter
REPLACE Automatic Transmission Filter
REPLACE Automatic Transmission Fluid
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

50,000 Miles

Maintenance check at 50000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

60,000 Miles

Maintenance check at 60000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Adblue Lines
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

70,000 Miles

Maintenance check at 70000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

80,000 Miles

Maintenance check at 80000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Adblue Lines
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Air Filter
REPLACE Automatic Transmission Filter
REPLACE Automatic Transmission Fluid
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

90,000 Miles

Maintenance check at 90000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
CHECK Tire Sealant
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

100,000 Miles

Maintenance check at 100000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Adblue Lines
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

110,000 Miles

Maintenance check at 110000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

120,000 Miles

Maintenance check at 120000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Adblue Lines
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Air Filter
REPLACE Automatic Transmission Filter
REPLACE Automatic Transmission Fluid
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

130,000 Miles

Maintenance check at 130000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
REPLACE Engine Oil & Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

140,000 Miles

Maintenance check at 140000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Body Corrosion & Paint Condition
CHECK Chassis Components
CHECK Seat Belts
CHECK Tire Sealant
CHECK Adblue Lines
CLEAN Water Drain
CLEAN & INSPECT Tilting/Sliding Roof
CORRECT Headlights
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
INSPECT Ball Joints & Rubber Boots
INSPECT Battery
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Leakage
INSPECT Panorama Sliding Roof
INSPECT Parking Brake
INSPECT Power Steering Fluid
INSPECT Propeller Shaft
INSPECT Rear Axle Ball Joints
INSPECT Steering Mechanical Components
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Window Washer Fluid Level
REPLACE Brake Fluid
REPLACE Cabin Air Filter
REPLACE Engine Oil & Filter
REPLACE Fuel Filter
REPLACE Wiper Blades
RESET Maintenance Minder Light
ROTATE Tires

150,000 Miles

Maintenance check at 150000 miles for your 2014 Mercedes-Benz GL350 Bluetec 4Matic

ACTIVATE Tire Pressure Monitoring System Sensors
CHECK Tire Sealant
CORRECT Tire Pressure
DRAIN & REFILL Adblue Fluid
FILL Diesel Exhaust Fluid
INSPECT Battery
INSPECT Brake Fluid
INSPECT Brake Pads
INSPECT Brake System
INSPECT Catch, Safety Catch And Hinges On Engine Hood
INSPECT Coolant Level
INSPECT Headlamp Cleaning System
INSPECT Horn, Headlamp Flashers, Hazard Flashers, Turn Signals
INSPECT Power Steering Fluid
INSPECT Tires
INSPECT Trunk Lighting
INSPECT Warning & Indicator Lamps
INSPECT Water Drain
INSPECT Window Washer Fluid Level
RESET Maintenance Minder Light
ROTATE Tires
REPLACE Coolant
REPLACE Engine Oil & Filter
REPLACE Wiper Blades

2014 Mercedes-Benz GL350 Maintenance Schedule

What is the maintenance schedule for the 2014 Mercedes-Benz GL350?

Your Guide to 2014 Mercedes-Benz GL350 Scheduled Maintenance

You want your Mercedes-Benz GL350 to last as long as possible. With proactive maintenance, you could hit 200,000 miles (or beyond!) in your GL350. But how do you know what service to get and when? It can be overwhelming, but fortunately, there’s a resource that takes the guesswork out of routine GL350 maintenance. Just follow your 2014 Mercedes-Benz GL350 maintenance schedule!

The recommended maintenance schedule is put together by Mercedes-Benz, your vehicle manufacturer. Depending on driving conditions and climate in your area (as well as other contributing factors, like your personal travel habits), your car’s scheduled maintenance needs may vary; however, recommended maintenance usually includes services like tire rotations, vital fluid checks/exchanges, filter changes, brake pad replacement, and oil changes. Scheduling routine service appointments is one of the best ways to help extend your GL350's life, keep you safer on the road, and help you avoid expensive repairs caused by 2014 Mercedes-Benz GL350 problems later.

Overview of Essential Mercedes-Benz GL350 Maintenance Needs

Come to Firestone Complete Auto Care for manufacturer-recommended routine maintenance on your 2014 Mercedes-Benz GL350 and an expert technician will begin by performing a Courtesy Check. The Courtesy Check helps us see what we’re working with under the hood, and allows us to alert you to any potential problems before they worsen. Each Courtesy Check includes a free battery test and an inspection of your GL350's windshield wiper blades, head and tail lights, filters, fluid levels, tires, and alignment.

Maybe it's time to find a new auto battery for your 2014 Mercedes-Benz GL350. If your current battery is more than three years old, it may be time for a replacement (batteries typically last somewhere between three and five years). Depending on the climate where you live and your habits while driving, your GL350 may need a replacement battery sooner. Extremely hot or cold temperatures can take a toll on your Mercedes-Benz GL350 battery, and so can frequent short drives. While you could wait until your battery fails and you hear the dreaded "click," you're better off replacing it before then! Otherwise, your battery could die unexpectedly, leaving you and your GL350 stranded. Your Mercedes-Benz GL350 won't be going anywhere without a strong battery.

In addition to maintaining a strong battery, investing in regular oil changes can help your 2014 Mercedes-Benz GL350's engine run smoother. Reference the chart toward the top of the page if you're not sure about the optimal oil change intervals for your 2014 GL350. Don’t forget, though, that weather conditions in your area or your personal driving habits can affect this interval. Talk to a Firestone Complete Auto Care technician to know when to change your oil. We'll also help you understand what type of oil to use for your 2014 Mercedes-Benz GL350.

Maintaining your Mercedes-Benz GL350 steering and suspension system can help you keep control of your vehicle at all times (plus, it can make for a smoother ride!). When it comes to steering and suspension, you want to catch small problems before they turn into big (and expensive) ones. Bring your car to Firestone Complete Auto Care, where our technicians can check your car’s steering components and, if necessary, provide the appropriate Mercedes-Benz GL350 steering and suspension services. This can include things like power steering fluid replacement, wheel alignment adjustments, replacement of struts and wheel bearings, and ball joint lubrication. To keep your car running at its best, it’s essential to have regular maintenance services on your Mercedes-Benz GL350's steering and suspension system.

If you skip recommended Mercedes-Benz GL350 services, you (and your engine) could quickly lose your cool when there's a problem on the road–especially if that problem is an overheated engine or broken A/C. Don’t sweat it, though! Our technicians can take care of those issues, too. At Firestone Complete Auto Care, we have what it takes to provide top-notch service for your Mercedes-Benz GL350 engine heating and cooling systems, as well as your air conditioning. Need a new Mercedes-Benz GL350 radiator? We can take care of that. A/C smelling musty? We'll fix it. Firestone Complete Auto Care is your one-stop shop for 2014 Mercedes-Benz GL350 maintenance and repairs.

So visit us regularly, or visit us urgently. Many locations are open on weekends and in the evening.

2014 Mercedes-Benz GL350 Maintenance Questions

Take an active role in maintaining your 2014 Mercedes-Benz GL350. Get answers to common Mercedes-Benz GL350 maintenance questions and learn more about caring for your vehicle.

What do I do if I hit a pothole in my Mercedes-Benz GL350? Check your car for pothole damage! If you’ve recently hit a pothole (or even if you don’t remember hitting one… they can be sneaky!) check your tire treads, tire sidewalls, and wheels for damage. Potholes can also knock your car out of alignment, so have your alignment checked if you suspect you’ve driven over a rough patch of road lately.
When should I use high mileage oil in my Mercedes-Benz GL350? Got 75,000+ miles on the odometer? Consider high mileage motor oil. High mileage oil is formulated to address the specific problems encountered by high mileage vehicles, or those with more than 75,000 miles. It can help reduce oil consumption, smoke, and emissions from older Mercedes-Benz GL350 engines.
Can I ignore dashboard lights on my Mercedes-Benz? Don't ignore dashboard warning lights! Bring your Mercedes-Benz GL350 in for a diagnostic code scan as soon as a dashboard warning light flashes on, whether it's your check engine or battery light. Dashboard lights alert you to trouble under the hood.