Need help plz 🙏. Power management issue
 

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?

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?

Different x5.
 

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?

IBS unplugged?


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I’m going to check tomorrow and report back