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Daytime running lights, sometimes referred to as DRLs or DTRs, are lights that switch on automatically when your 2009 Mercedes-Benz C300 is turned on and in drive. Since the daytime running lights are on whenever you are driving your C300, they are often the first bulbs to burn out. The video above shows you how to change the daytime running lights in your 2009 C300. These bulbs grow dimmer by over 20% over time, therefore we recommend changing both bulbs on your C300 at the same time, even if only one bulb is burnt out - this will allow both DRL bulbs to have the same intensity and prevent the old DRL bulb from appearing dimmer than the new one.
When you change the daytime running light on your C300, it is important not touch the glass part of the bulb with your fingers because the oil from your fingertips will cause that part of the bulb to burn hotter, which significantly shortens the life of the bulb. Some studies indicate that driving with your lights on can reduce accidents by 18 - 34%, driving with your DRLs or headlights on the day can reduce your chance of getting in an accident.
Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here!2009 Mercedes-Benz C300 Sport 3.0L V6
Low coolant levels is all to common - top yours up today2009 Mercedes-Benz C300 Sport 3.0L V6
If your brake fluid is a little low, learn how to add some here. Ignoring a low level leads to big problems2009 Mercedes-Benz C300 Sport 3.0L V6
Coolant hoses wear out over time and need to be replaced - check 'em early and often2009 Mercedes-Benz C300 Sport 3.0L V6
If you have an electrical component that doesn't work, try replacing the fuse first2009 Mercedes-Benz C300 Sport 3.0L V6
Avoid tickets and accidents with both working headlights! New bulbs are much brighter too2009 Mercedes-Benz C300 Sport 3.0L V6