Any help will be appreciated. 2007 A8L Wont start after dead battery and leak in sunroof

I'm in the process of gaining access to the fuel pump relays, one under the hood, passenger side next to windshield, and the other under the carpet on the passenger side, to see if I can check them but, other than removing them and bench testing them, I don't know what else to check while I'm there.

The car had trouble starting after it had been sitting with a dead battery for a few months. Installed new battery.
It started and ran for about 2 minutes and shut off. It would not re-start.

Connected VAG-COM cable and read codes:
12425 Signal Line for Fuel Pump Electronics - Intermittent MIL ON
005634 Power Supply Terminal 30, P1602 - 002 Voltage Low - Intermittent.
012357 Fuel Pump, P3045 001 Electronics Defective - Intermittent
It would just crank (no start). Reset the codes and it re-started again and ran for a couple of minutes.

I checked the fuel pumps (both) in trunk behind rear seat back. They are not getting power.

Now, the codes are:
005715 Please check DTC Memory of ABS Controller
012425 Signal Line for Fuel Pump Electronics, P3089 002 Electrical Malfunction
005634 Power Supply Terminal 30 P1602 Voltage too Low - Intermittent.

Any comment will be appreciated.

 

I found the Fuel Pump 1 Relay (J17, luggage compartment righ side above battery) was not working. I replaced it with one from a Ford, which appeared to be the same. It started and ran fine after this....so far. Will order the correct relay and replace it.

I continue to get the 005715 code from above. Will need check the DTC Memory.

 

Solved, the fuel pump relay behind the battery in the truck was found to be bad. Replaced and car ran fine.