1. Getting Started - Prepare for the repair
2. Open the Hood - How to pop the hood and prop it open
3. Remove Bulb - Steps to remove a burnt out bulb
4. Helpful Hints - How to find replacement bulb type and other hints
5. Replace Bulb - Procedures to replace the new bulb
6. More Info. - Additional information on DRL bulbs
Daytime running lights, sometimes referred to as DRLs or DTRs, are lights that switch on automatically when your 2010 BMW 335d is turned on and in drive. Since the daytime running lights are on whenever you are driving your 335d, they are often the first bulbs to burn out. The video above shows you how to change the daytime running lights in your 2010 335d. These bulbs grow dimmer by over 20% over time, therefore we recommend changing both bulbs on your 335d 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 335d, 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.
Hans Angermeier is an ASE certified Maintenance and Light Repair Technician and has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road. Over the past 10 years, Hans has been focused on building CarCareKiosk, which is visited by millions of drivers each month.
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