Quick question: Do I need to cut off battery when working on head/tail lights? - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 08-27-2010, 09:48 AM
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Quick question: Do I need to cut off battery when working on head/tail lights?

As title. Thanks a lot.
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#2 (permalink) Old 08-27-2010, 10:44 AM
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Also, if I cut off battery negative end, is there any I will miss after it is restored? For example: if you take off the battery of an AUDI, the radio will be locked after the battery is put on again. A radio code will be needed to unlock the radio which could cost $120 if car is taken to a dealer.

Just want to make sure nothing will miss after battery is taken off.

Thanks.
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#3 (permalink) Old 08-27-2010, 01:33 PM
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It depends on what you are doing. If it is just replacing light bulbs, there is no need. But for any job, if I were you, I rather pull the fuses out for the tail lights so that I don't mess the radio.
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#4 (permalink) Old 08-27-2010, 02:02 PM
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Yea, it's a good idea. Thanks.

Quote:
Originally Posted by leadfoot View Post
It depends on what you are doing. If it is just replacing light bulbs, there is no need. But for any job, if I were you, I rather pull the fuses out for the tail lights so that I don't mess the radio.
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#5 (permalink) Old 08-27-2010, 06:42 PM
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You will be fine. I rarely unhook the battery anymore, I used to think the same that I could damage things, but if you aren't turning the lights on, hitting the brake pedal, etc you aren't applying voltage while you are working on the lights.



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#6 (permalink) Old 08-27-2010, 11:18 PM
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Even though I spray electric cleaner on the socket?
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