Quote:
Originally Posted by gbalthrop
Here is BMW Fault Code Lookup Definition of "4F8D" code & link to Fault Info page. NOTE first step: CHECK FLUID LEVEL:
P17EC | 4F8D | EGS: Ratio monitoring, gearshift 5-4 | GS19B | Transmission control
https://bmwfault.codes/XMLDiagView?d...IANgA2ADAANAA=
If you have INPA, you can view EGS "History Memory" (HistorienSpeicher), and see if there were any instances of 4F8D fault code BEFORE you changed Trans Fluid/ Pan. That would be further clue related to fluid level.
Original tires were probably Continental Runflat RSC. BMW selected those FOR A REASON. If you have NEVER driven an E9x with RSC Runflat Conti's, try it BEFORE you dismiss them as somehow "Inferior". I realize there are numerous posts knocking RSC tires. I'm on my 2nd set. Excellent handling, braking, noise level, traction -- absolutely NO Tramlining. I carry an air pump, plug kit, keep a 5th duplicate Wheel/Tire at home, and have NEVER had a tire issue.
I would NOT presume to tell you what to keep, sell, or Replace "pre-emptively". Your 330i is low mileage and if "A6CF" AUC Sensor is ONLY fault, then well-maintained. If you "pre-emptively FIXED" everything anyone complains about on E9x Forums, you would be a "busy man". My moto:
"If it ain't BROKE, don't FIX it!
I have NO Fault Codes on 3/2007 build 328xi with 140,000+ miles. I do all my own work including Transmission (GM6) fluid/filter replacement, and all other fluids. ONLY mechanical repair was replacing Bosch plugs (with same Bosch part) in first 2 weeks of ownership, due to 2 instances of "Misfire" at > 5,000 RPM due to enlarged plug gaps (0.055+" gap instead of .040" spec). YMMV.
George |
Most excellent advice as usual. But the DISA question is a difficult one, which I am struggling with, with my Z4. Sitting at 120,000 miles now, which seems to be the timeframe for failures. You and I agree on not chasing new parts after good parts just because the internet says so. But a DISA failure can mean dislodgement of the butterfly valve body and possible ingestion of the steel axle pin.
A quandary for sure.
