Need help plz 🙏. Power management issue

[deboelduro]

Hello members. I’m experiencing an issue after getting this vehicle road worthy

BMW X5 4.8 2009 /Just figured out ISTA and scanned for fault codes, got this:
CDA2 (power management, battery voltage 0x3B4) faulty, receiver DME, transmitter CAS/PM.
CDA3 (power management, battery voltage 0x334) faulty, receiver DME, transmitter
2F80 DME: System time, plausibility
+
Whenever i try to check on service function tab > voltage supply > evaluating the battery state of charge it shows the following:
Engine control cannot recognize IBS. This may be due the following cause:
.IBS supply interrupted
.BSD between DME/DDE and IBS (open circuit, short circuit, loose contact)

I keep getting a check engine light because of this. Anyone had this issue before?

[ard]

Just a perfectly fine X5 one day started throwing these errors one day?


Or is this the one you are mixing and matching DME, cluster, CAS, cluster, tcm, etc etc?

[deboelduro]

Another x5. This one came to me with a bad waterpump and same 3 codes.
2f80
Cda2
Cda3

I replaced the waterpump and thermostat and diving in to troubleshoot these codes. Any help would be appreciated. It seems like something with the bsd bus line?

[andrewwynn]

IBS unplugged?


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[deboelduro]

I’m going to check tomorrow and report back