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SLX5	11-29-2008 01:02 PM

Problem with the Gas Milage....after battery died

I have a 02 X5 3.0i. i was getting about 15.9mpg on the city. Then I left one of the interrior light and drained my battery completely. Since then, I get about 11.5mpg. Any ideas why this is? Is is possible to hange the computer programs the fuel system uses? thanks in advance.
SLX5

SLX5	11-29-2008 09:06 PM

does anyone know what may cause this?

cmyX6go

11-30-2008 09:58 AM

I'm guessing the computer just reset and the 11.5 mpg is your mpg from that time forward.The 15 mpg was the total driving history. :dunno:

Buckeyeauto

11-30-2008 12:38 PM

Same thing happened to me when I was installing my Angel Eyes, left the key on and battery died. My mpg dropped from 15.2 to 14.2.

Weasel

11-30-2008 12:46 PM

As seemyX5go stated, it probably reset the reading, which is an average. It probably had alot more highway miles on it from in the last average.

SLX5	11-30-2008 08:11 PM

That makes sense. Thanks everybody.....I liked seeing 15mpg and was hoping to get that out of a 3.0i engine.

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