C30 2009 Battery drained

[TonyV]

I have just bought this C30 2009 left car for one week and battery was totally drained. It would not hold charge and I took to dealer.
I have just replaced windshield due to stone damage.
The warranty is expiring in 1 month.
Dealer reloaded firmware saying that there was drain from RDAR and it is firmware error.
Seems a bit hard to believe that this issue is just fixed now in 5 year old vehicle. I found from internet search that RDAR is related to satellite radio which I am not using.

Has anyone heard of this error?
How can I find the equipment and info to read and identify the firmware codes?

Wanting to love my used C30 but struggling.. .

[difflock54]

The battery might have been up for near replacement anyway, especially if it is the original and 5 years old.

[jimmy57]

The RDAR issue only shows if car is parked for 5 or more days.

The RDAR comes on with car off periodically in order to receive re-subscribe info. When it comes on the network in the car comes on and uses a moderate amount of current for a few minutes. A number of these cycles will drain the battery.

The software revision makes the RDAR look for this when audio system is on when engine is running.

[mf70]

Bad battery in 5 yr. is well below avg. Volvos are good to their batteries - they need to be since so much depends on them.

You can check your codes yourself with a clone DiCE / VIDA setup. You won't be able to do the programming, though.