What have I Fried??

[davekes]

Hi all,

Well the new amplifier arrived today, I plugged it in to test it before fitting and it was working well, so I set about installing it.

During the installation I had a battery charger on keeping the battery topped up whilst the doors were open.

As I was bolting the divider/mounting plate back into position I inadvertently let the metal ratchet handle touch the live wire coming into the fuse box, this created a short between the fuse box live and the car bodywork (see attached photo). There were sparks and scorching on the bolt that the ratchet was attached to.

I finished bolting everything up and turned on the ignition and the MMI has stopped working and I have gained a 'parking brake malfunction' on the DIS display.

I ran a VCDS scan and got the following faults for the parking brake, I have cleared them but they come straight back:

Tuesday,18,July,2017,15:56:03:32225
VCDS Version: Release 17.1.3 (x64) Running on Windows 10 x64
www.Ross-Tech.com

Address 53: Parking Brake Labels: 4E0-910-801.clb
Control Module Part Number: 4E0 910 801 A HW: 4E0 907 801
Component and/or Version: EPB AV1C1010 H01 1010
Software Coding: 0000221
Work Shop Code: WSC 00443 210 90890
VCID: 1D64D0C261B610FF26F-8048
3 Faults Found:

00576 - Terminal 15
012 - Electrical Fault in Circuit - MIL ON
Freeze Frame:
Fault Status: 11101100
Fault Priority: 4
Fault Frequency: 1
Reset counter: 141
Mileage: 239112 km
Time Indication: 0
Date: 2017.07.18
Time: 15:50:06

Freeze Frame:
Voltage: 11.70 V
Count: 41

02434 - Supply Voltage for Control Module for Left Channel
009 - Open or Short to Ground - MIL ON
Freeze Frame:
Fault Status: 11111001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 141
Time Indication: 0

Freeze Frame:
Voltage: 12.21 V
Count: 112

02435 - Supply Voltage for Control Module for Right Channel
009 - Open or Short to Ground - MIL ON
Freeze Frame:
Fault Status: 11111001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 141
Time Indication: 0

Freeze Frame:
Voltage: 12.32 V
Count: 113




VCDS can't make contact with any of the MMI system components.

I have checked all the fuses but they all seem good.

Any ideas chaps?

Thanks
Dave