Fellers,

2010 HSE RRS, normally travels 5 miles a day each way to the station and back, twice driven to work about an Hour's run on the A12.

On these occasions after about half hour there is a static sound, and the Sat Nav / Radio screen is dead - no life or sound once I stop and restart all ok for 1/2 or so.

It appears to be when things get warm? I have found that on braking hard all life returns to the system in memorised condition.

I am assuming loose wire / connection?

Any help appreciated 2008 RRS 3.6 HST - Stornaway / Black - Current
2010 RRS 3.0 HSE - Nara Bronze / Almond - Gone
2009 RRS 3.0 SE - Sliver / Teal

You've double checked the battery connections? Any movement in the connections means it's either not sitting right or just not tight enoUgh.  Bodsys Brake Bible
Software Updates Contact me
RRS Timed Heat/Remote kits - Contact me
BAS Engine Re-maps/ EGR Blank EuIII and EuIV
Clock On The Dash/ SNOTM /3Flash / BT Update /Service Reset/Error Codes read\ Gearbox Reset
See it HERE

Thanks Ian, I'll look tomorrow and re-check  2008 RRS 3.6 HST - Stornaway / Black - Current
2010 RRS 3.0 HSE - Nara Bronze / Almond - Gone
2009 RRS 3.0 SE - Sliver / Teal