Oh yeah, we'll use the right stuff. This is my other BMW - "do it once, do it right" is how you work on these :



Got home tonight and borrowed a friend's Schwaben scan tool. Lots to look at on there! I think I narrowed things down a bit.

Trifecta Lights:
These self-clear upon shutdown and stay off when you re-start. They illuminate after rolling the car forward a few feet. Scan tool says "DSC: Inlet valve, front right" which I assume is a wheel speed sensor.

I checked the brake fluid and the reservoir is full. Wiring looks good, too.

Transmission Light:
This never clears, even if you tell the scan tool to erase everything. The code is "EGS: CAN torque interface." Again, it drives and shifts fine although some shifts are firm and others are more mild.

Service Engine Soon:
Many codes! I cleared them, the light went out, and came back on re-start. The two that seem pertinent are "DME: Signal, mass airflow sensor" and "DME: Oxygen sensor voltage before cat, bank 2."

There were a few other codes related to EWS and tank ventilation solenoid activation. I'll have to check and see what is re-set now that I cleared it. Only drove it a few blocks after clearing.

Instrument Cluster:
Still thinking ignition switch is to blame for this. I read that one test was to see if the driver's sunvisor light works, and mine does come on with the visor mirror cover being moved. BUT... in my testing today, I noticed that the fog light indicator appeared briefly as I bumped the key (fogs work regardless, X5 was running). Ignition switch is relatively cheap and simple to swap.

So, my plan of attack for this Saturday is...

• Replace O2 sensor
• Replace FR wheel speed sensor
• Clean MAF
• Bleed brakes
• Oil & filter change
• Transmission drain & fill (kit from FCP Euro, new filter)
• Replace ignition switch
• Clean the everloving funk out of it

__________________