2001 BMW X5 3.0i - Soft-Roading on the Cheap

[Jake]

Made it downstairs to plug the scan tool back in just now. Learned a few things.

1. Keys
I re-synced both "diamond" key fobs so that the remotes would work again. They both synchronized and worked to lock/unlock the doors until I turned the car off. Then it was like I had never done it.

2. Dash Indicator Lights
There was a brief moment at first where the fog light indicator, both turn signals, the hazards, and high beams all were indicating properly in the cluster. Then I breathed too hard and they all stopped working again. The fog light indicator came back on briefly (and correctly) when I put the car back in Park.

3. O2 Sensors
I got live data on these! The reader shows the following:
O2B1 S1 - This value changes as I drive
O2B1 S2 - This value is stuck at 0.430 V
O2B2 S1 - This value is stuck at 0.430 V
O2B2 S2 - This value changes as I drive
So, I think I have at least one dead O2 sensor if not two. The pre-cat sensors are the ones that seem to actually matter, though.

4. MAF Mystery
SOLVED. Ish. I noticed the live MAF data on the scan tool was not showing at all, either at idle, when revving in Park, or while accelerating in Drive. Just a 0.00 lb/s readout. Popped the hood and found a MAF that isn't secure in its plastic tube, and appears to have one of the two little prong-y things broken in half. I suppose that'll do it:





I guess I'm ordering a new one.