I've had the interior lights and hazards problem, dealer could never replicate it nor find a fault code. Some time later I had a new battery last year and its not happened since, I can't say the two were connected, you will have to draw your own conclusions....

The battery is HUGE and despite what dealers say you don't need to take the bonnet stays off and put it back onto the windscreen in 'service mode' to get it in (I was told by my local garage) Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top

*Gone:L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB

Well, I have done some checking. The loss of drive is because the selector lever just needs the minutest touch to go from drive to neutral. A bump can set it off!! So it is either adjustment, lubrication or a new selector - I'll do some digging if anyone can't help on here.

Battery is fine, and so is the alternator.

I have a vaccum leak somewhere from the left hand side of the engine block - Difficult to pinpoint, so needs the engine cover off for further investigation. This is the cause of my engine management light

Oh well, at least the lambdas are new eh?