Bluetooth & Cooling Faults

Hi All, 

 

Well after 6 years of ownership of my Scout CR DSG (with nothing to report and hence my absence) i've a couple of issues turn up at once .

 

Firstly the BT has started to crackle, pop, whistle & whine when you are using the phone. The whistling is often worse when in line with pressure on the accelerator and the pops and crackles are more noticeable and in time with every bump on the road! VCDS gives the following codes: 

 

Address 77: Telephone (J412)       Labels:| 3C8-035-730-A.clb

   Part No SW: 5N0 035 730 D    HW: 5N0 035 730 D

   Component: Telefon       009 0511 

   Revision: --------    Serial number: 35909603152957

   Coding: 020100000100010000000000

   Shop #: WSC 73430 031 00090

   ASAM Dataset: EV_UHVPremi A01005

   ROD: EV_UHVPremi_A01.rod

   VCID: 295240984810810EFD-807C

 

3 Faults Found:

9457425 - Left audio channel for speech/telephone

          B104F 11 [008] - Short to GND

          Intermittent - Confirmed - Tested Since Memory Clear

             Freeze Frame:

                    Fault Status: 00000001

                    Fault Priority: 4

                    Fault Frequency: 33

                    Reset counter: 63

                    Mileage: 108530 km

                    Date: 2017.07.07

                    Time: 09:45:55

 

9457169 - Right audio channel for speech/telephone

          B104E 11 [008] - Short to GND

          Intermittent - Confirmed - Tested Since Memory Clear

             Freeze Frame:

                    Fault Status: 00000001

                    Fault Priority: 4

                    Fault Frequency: 254

                    Reset counter: 68

                    Mileage: 108529 km

                    Date: 2017.07.07

                    Time: 09:17:02

 

13893632 - Function Restricted due to Insufficient Voltage

          U1400 00 [008] - -

          Intermittent - Confirmed - Tested Since Memory Clear

             Freeze Frame:

                    Fault Status: 00000001

                    Fault Priority: 6

                    Fault Frequency: 7

                    Reset counter: 42

                    Mileage: 108566 km

                    Date: 2017.07.11

                    Time: 10:04:15

 

I've found very little specific on here of the net, but wondered if these are a sign of the module going down or possibly a break in the loom? 

 

My second issue is a wayward temperature gauge (no faults recorded), but shows temp often running between 50-70c and doesn't stay stable. It does occasionally get to 90c but it's all a bit hit and miss. I'm suspecting a thermostat issue, but as I've got the DSG box, someone suggested there is a second thermostat/temp sender for the gearbox and that could be the issue? I understand that the main thermostat is a bit of a faff to swap out, but again the suggestion was the gearbox one is cheaper and simpler so may be worth swapping anyway? I seem to think our old Fabia had a similar issue and it turned out to be the expansion tank not holding pressure.... there is no loss of coolant and no running hot i should say. Again any help or advice from you lovely peeps would be much appreciated!