Hi Everyone- New to the 2007 and consequentially the forum.
2007 E64 M6 - 57K miles.
All was working great until last week when we had 2 days of heavy rain. There was water in the boot, below the battery compartment. I turkey basted about 40 Oz. out of the thing. Electrical issues started with the boot release not working from either the interior button or the Key FOB. Then the convertible top stopped working- nothing when I press either open or close button (I was going to see about unclogging the drains) - not even a light or error message. Yesterday, the rear window would go down, but not back up.
Every search I do comes up with the issue being the rear drains and how to remedy, however I haven't found anything about the associated electrical gremlins that impact the top operations. I assume all of these issues are related, but don't know where to even begin. Any thoughts? TIA
I am actually surprised there were no replies since this seems to be a common issue. For anyone else experiencing, I will provide my results.
Quite obviously an electrical issue.
**Autel MaxiDiag 805 code reader: A698 (Temperature Sensor: Invalid Signal), A692 (CVM: Supply. Hall Sensors Plug A output voltage too low), A699 (CVM: Rear-Window Drive), A693 (CVM: Supply, Hall Sensors, plug C output voltage too low).
First- Water test. Came back negative. There was no water infiltration seen after a few thorough soakings by the dealer. I did notice that the rear window rubber seal and the unrelated front windshield are in need of replacement. One of the drains in the top storage area was very slow draining, and another was not as great as it could be, so I cleared them all to free flowing.
Second: Convertible top control module was replaced. This fixed all of the issues immediately. ~$450 part new. The next day the trunk release stopped working again.
Lastly: Top convertible left latch replaced. ~$750 part. This fixed the issue with the trunk. No issues since.
Hopefully this helps someone out.