E46Fanatics - View Single Post - Yellow Cog light showing up but car runs without problem
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Old 10-07-2012, 08:44 PM   #19
Registered User
Join Date: May 2010
Location: Melbourne, Australia
Posts: 411
My Ride: 2002 E46 M3
I've had the SMG pump replaced twice now. (both under warranty) Initially when the cog light came on the car seemed fine I assumed it was just a random code and booked in to see the dealer, unfortunately as time went by engaging gears in the morning was less and less reliable.

After reading a lot here, and wondering at likelihood of the second pump failure in under a year I enquired if it could be the relay, I was told that while the relay was failing, the cause was the pump drawing too much current, in turn causing the relay to burn out, so a new relay would just mask the issue.

I can't say I trust information the dealers repair centre give me... but this did sound plausible. (but I'm not a mechanic.)

I'd say it's certainly worth pulling your new relay and taking a look at it, along with getting the codes read, and perhaps implementing the heat fix.
Mallee is offline   Reply With Quote