It is irritating light day! This one is a bit stranger. I replaced the
air filter with a K&N. Works beautifully! Every weekend we ski in the
mountains. One weekend, the above light went on. Dealer reset the
light, and said we need to switch back to a BMW air filter. Light has
been off for 3 weeks. Came back on this weekend while we were skiing.
Is the light coming on related to the altitude, the cold, the K&N or
How do I reset the bloody thing?
I don't know, because I don't know what the code is. The light tells you
that a code has been set. You use the scan tool to find what code was
set. Then you figure out what is wrong from there.
I will say that the K&N filters are a great way to damage your engine,
though. They do allow better flow and therefore slightly better peak
horsepower, but they also allow more crap to flow through them, and they
don't really improve drivability at normal rpms.
You get a scan tool or take it to someone who has a scan tool and you
figure out what code was set. Once you know this you can figure out if
you can reset it or not, because it depends on the code.
"C'est un Nagra. C'est suisse, et tres, tres precis."
It has been my experience that
" check engine " light is the
BIGGEST gaff EVER !
I'm not saying that they can not be
most helpful in diagnosing problems .
My belief is that they are designed
to force you to a dealer .
Buy yourself a " code reader " and you
can reset it ( light goes out ) or it will show you
what the problem is .
I use " auto Xray " which is not that expensive .
I have reset codes that NEVER showed up
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