This morning I took my RRS out and everything was working perfectly. Later, when I went out again, the Sat-nav just says “initialising”, the Bluetooth won’t find my phone (annoying as I get quite a few calls when driving) and the audio system is just greyed out and not working at all.
Before I call the dealer, I was wondering if there’s a fix (though I suspect I’ll be told to disconnect the battery and do a hard reset)?
Is this a common issue? My RRS is a 2012 HSE SDV6, but, to be honest, I’m considering changing it now as it’s beginning to get a tad expensive to maintain.

How much have you spent so far and how long have you owned it? I love the sports 2006 RRS Supercharged 4.2 HST muthuaflecka!

Have you turned it off and on again? Merc C220 estate Sport AMG
Merc C220 estate Sport AMG 125 year edition
Alfa GT
Rover 76 V6

Repeatedly ..

Hard reset ? Disconnect cables from battery and touch together ? Search the site for precise how to but may be worth a try ?

Any devices plugged in to USB ports? I had similar symptoms when a USB stick played up. The stick got very, very, hot. Removing the stick sorted it all out in a jiffy. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Thanks. I saw the earlier thread and tried taking the usb stick out, but no luck.
I’ll see if it’s the same tomorrow and then try a hard reset, if I’m brave enough!

Started her up this morning and all ok, with me doing absolutely nothing.
So .... intermittent fault? Can’t be a fuse as that would take it all out, wouldn’t it? An annoying glitch. Anyone something similar?
Thanks to all for your thoughts - I’ve had her since 2015, regularly serviced, new tyres all round, repaired some leather on seats, so not too much spent yet, but I have an idea the service charges will continue to increase, etc. I love her, but not as much as my Discovery

the reason i asked if you'd turned it off and on again was that it happened to me once, a few months ago and all I had to do was stop, turn everything off and on again. I put it down to a glitch when booting up. It hasn't happened again.

Yours sounds like something more sinister if you tried several times. Merc C220 estate Sport AMG
Merc C220 estate Sport AMG 125 year edition
Alfa GT
Rover 76 V6

Thanks, Bill. Yes, I’m worried that it is! Might have to go down the dreaded “dealer route”

Could be a slightly loose earth somewhere. There are a few easy-to-reach ones in the engine bay that it would be worth checking at least. Others lurk behind trim and underneath. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed