Dealer is bringing me a loaner today and going to put a new sim card reader in and update the infotainment firmware.
I imagine I won't get it back until Wednesday but who knows. I will update.

 

 

I should have been more specific and said don't touch the battery leads together after disconnecting them from the battery to reset electronics. Most of the time it is not going to be an issue, but you may run into an odd case where this will cause a large capacitor to discharge rapidly which can potentially cause issues. In addition if it is like other Rovers the D5 will have a smaller auxiliary 12V battery for the stop/start function, and not sure how that will route with the main battery terminals. A much safer route is to use a 200 Ohm 2W resistor between the disconnected battery leads to drain any capacitors there may be, or simply just let it drain on it's own for a few minutes. But again I have not looked at the wiring diagrams of the D5, so there may be a bit more complexity involved with the additional battery

No issues disconnecting the battery leads, but be careful touching them together just after they are disconnected, especially with these computers on wheels. Rather be safe than sorry.

 

The D5 doesn't have a second 12V battery for the start stop. It uses a capacitor system to ensure the vehicle electrics have a continuous flow of electricity while the starter recranks the engine. But your point is still correct - it should be wired to avoid rapid discharge if you touch the cables together but I wouldn't risk it. Modern car electrics are sensitive and shooting a spike through the system could be harmful. See the LR4 forum for someone who tried this when changing a battery and one of the control modules wouldn't restart

Interested to know if this 'soft reset' is a real think. I've seen it mentioned around the forum a lot but never any confirmation that it's a real LR procedure. I had understood that just disconnecting a battery cable for a few minutes was sufficient

 

Land Rover of Norwood, MA never heard of that terminology

 

So my Disco has been at the dealers since Monday.
They opened a bulletin on the hesitation.
Updated infotainment to Phase 4
Updated AC firmware
Did not replace my Sim card reader, they ordered the wrong one (this was ordered back in August).
Service Adviser told me there are only 4 of the correct ones in existence and they have one coming from the UK but even overnight shipping can take 5 days from Europe ??
I Fedex stuff priority to the UK and it does take 2 days instead of 1 but 5 is silly.
So anyway he is thinking the end of next week before I get it back. I have a Discovery Sport free loaner so not too bad but will be happy to get mine back.

 

Still at the Dealers, new sim card reader is replaced. Still no internet either via AT&T sim or wifi.
They have opened a case with LR.

 

Well they have finally solved the problem. They put a new telematics unit in.
They also did a command module update for engine hesitation.
I am having them detail it and they do that after the shop work. So I am getting it back Monday.

When I get the paperwork I will share any more details in case someone else runs into this problem.

 

Pls report back on how it drives and whether the hesitation is fixed. Mine is in for the same issue - and the disco V loaner had it too...