[335dFan]

Today, just for grins, and because I am taking the car in for an oil change in a few days, I used my scan tool that came with the JBD and discovered two codes:

4687 - which is apparently Throttle Valve Actuator
474C - not sure

But from reading a few threads on this and Bimmerfest, it may be related to the DEF process.

A month ago or so I got the 999 miles to go warning, and since I was waiting for the oil change light to go on, I put about 1/2 gallon of DEF in the active tank. The 999 miles to go warning went away. It could be those codes are left over from that. I cleared the codes.

BTW, as I may have reported in another thread, a month or so I got an SES light and figured it was for my second oil change, as it came on at about 25.5k, and my previous oil change by dealer was at 11,629. But I belatedly found out that the oil change and oil filter was not indicated so was not done. Nor was the DEF top-up. They replaced the air and fuel filter and replaced the squealing AC belt. Fast forward a bit: I get the 999 miles to go reading, call the dealer to complain about the DEF and learned the foregoing. Now I am sitting at 27+K and the next oil change is showing as 12,000 miles away. So I called the dealer again and we agreed that either the computer database is hosed or the tech inadvertently reset the counter. Taking it in next Tuesday. I wonder about these guys; this dealership is usually good.