M5 Guru (>2000 posts)
Join Date: Aug 2007
Location: So Cal
Thanked 248 Times in 217 Posts
I guess google took the day off today. Iíll try to explain it in a very simple form.
CAN bus, Contoller Area Network. Itís the freeway where all of your sensors and car information runs on. The freeway does not like it when foreign cars are on it, i.e. another module that did not come from factory. So why is this bad? If your car stars acticting funny like error codes you wonít know the real issue until you disconnect all foreign devices and run diagnostic again.
How do people add all of that after market stuff? Two part answer.
1. You can borrow power from the freeway, but should always use chassis for ground.
2. Those people who add stuff and run onto trouble, run here for their answers cause no one out there can identify the problem.
Lastly, when posting a comment one should have a general knowledge on what they are talking about vs. opinions which even they wonít consider.
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