In the last month my Audi S3 upon starting intermittently would beep from the rear 2 - 3 times. After 2 weeks or so after hearing the beeps i can now hear from the Subwoofer an electrical noise which can be heard from outside and inside the car. Even when turned completely off and locked it can be heard. Now the noise happens when driving and about 5 seconds after locking the car. I've been told it can be the central lock pump... the parts inside break/shatter or can leak. All the door locks work perfectly fine manually and from the key fob. Long before hearing any beeping noises and clicking noises opening the rear boot would make the boot lights flick on & off real fast and make relay type noise. Now i think all of these faults lead into one thing. Also the Alarm comes on intermittently. Another common fault is the battery for the alarm. Am confused... Video of noise: S3 subwoofer - YouTube Fault codes: VCDS-Lite Version: Release 1.1 Wednesday, 06 June 2012, 16:58:48. Control Module Part Number: 8D0 862 257 E Component and/or Version: CV-Pump, Alarm, RC D17 Software Coding: 15178 Work Shop Code: WSC 06435 VCID: 2F1190BFFE13 11 Faults Found: 01367 - Central Locking Pump Run Time Exceeded (Likely Leak) 35-00 - - 01371 - Shareware Version. To Decode all DTCs 35-00 - Please Register/Activate 01370 - Shareware Version. To Decode all DTCs 35-00 - Please Register/Activate 01368 - Alarm triggered by Luggage Compartment Switch 35-00 - - 01373 - Shareware Version. To Decode all DTCs 35-00 - Please Register/Activate 01366 - Shareware Version. To Decode all DTCs 35-00 - Please Register/Activate 01365 - Lock/Unlock Switch; Interior 29-00 - Short to Ground 00991 - Shareware Version. To Decode all DTCs 28-00 - Please Register/Activate 00955 - Shareware Version. To Decode all DTCs 09-00 - Please Register/Activate 01134 - Alarm Horn (H12) 76-00 - Terminal 30 missing 01134 - Shareware Version. To Decode all DTCs 49-00 - Please Register/Activate Any help or guides to fault finding would be great.