Hi, Just had some work done under Warranty two weeks ago. I was getting two and four beeps from the alarm when unlocking the car. Went into Westover Landrover and they diagnosed a faulty Central Junction Box which they renewed.
Prior to it being done I was getting 40 to 41 mpg on duel carriageway and motorway runs all the time, but since having the work carried out cant get it above 32mpg. Going to speak to Westover Landrover today about it, but has anyone else had problems with fuel economy after having electrical work carried out. Wondered if maybe it needs software updated after maybe corrupting already installed software with disconnecting electrics to do the work?

Is the economy actually worse, or is the car just telling you it is? I.e. are you actually using more fuel, or is the readout simply different from that with the old CJB? It could just be that the CJB needs to build up some history in order to give more accurate figures and hasn't yet done that.

Not sure whether I am actually putting more fuel in, I was just going by the average fuel readout. I reset Trip A last week and have driven about 600 miles since the new CJB was fitted. FL2 MY2008 TD4 HSE Auto Rimini Red ... Gone
FL2 MY2015 SD4 Metropolis Auto Firenze Red ... Gone
Discovery 4 MY 2015 SDV6 HSE Auto Yulong White ... Gone
FL2 MY2013 SD4 HSE Lux Auto Indus Silver ... Current

and when was the last re-set before that ? they hang after a while but with mixed driving and no lead foot I get 35 to 37 mpg FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

I hadn't reset for a few months prior to it going into the dealership. I phoned the dealership this morning and I have to take it in on Monday morning and they are going to test drive it. They still say changing the CJB shouldn't cause poor fuel economy. FL2 MY2008 TD4 HSE Auto Rimini Red ... Gone
FL2 MY2015 SD4 Metropolis Auto Firenze Red ... Gone
Discovery 4 MY 2015 SDV6 HSE Auto Yulong White ... Gone
FL2 MY2013 SD4 HSE Lux Auto Indus Silver ... Current

Not such a big change as you are seeing but my car went from 31mpg to 36mpg after a recent battery change. For me it's just the readout that is different, I do not see a change in the distance I can drive after filling up. The last reset I did was at least 6 months ago.