Thread: Disco 4 2016 - ran out of fuel 3 times

Thanks everyone - all good thoughts. I'll tackle land rover again today. They replaced the fuel sensor and the problem is worse with a fluctuating gauge - I suspect that they have not installed the fuel sensor correctly or the wiring loom is not plugged in correctly. A trip to port Lincoln sounds good.
Cheers and thanks
Bruce

As I said there's 2 level sensors in the tank..

And for the record - I live 2 1/2 hours from LLR and I won't go there!

Thanks Tombie - its been 9 days at "**LR" now and still not fixed. Everyday is a new day so I'll wait and see what happens today - i'll patiently reserve my judgement at this stage. I spoke to them yesterday and convinced them (hopefully) that the faulty gauge has nothing to do with the auxiliary tank which is completely independent of the main tank and that they are just wasting their time.
From my limited understanding the only LR dealers in SA that can do warranty repairs are Solitaire, Mt Gambier and Pt Lincoln - do you know if thats correct?

Cheers

My D4 stopped one day & had to call Land Rover Assist, what I had noticed since fitting the aux tank was every time I took the fuel cap off to fill it there was a significant vacuum release. Anyhow on the day the D4 stopped & would not start the LRA mechanic advised he thought it was a fuel supply problem, he then removed the fuel bleed cap & pushed the schroeder valve & low & behold it released fuel & air indicating it was out of fuel, the fuel gauge however was reading quarter full. At this point I did some figures on fuel economy & they were very impressive, I then went to the fuel filler & removed the cap, the usual extreme vacuum release occurred & the fuel gauge fell to empty!!!!.
I then pumped fuel from the aux tank & after some turning over it started & ran as normal, I think its a venting problem, I have since cleaned the fuel cap vent but havn't done any long trips since the problem occurred, I'm also going to check the tank vent lines to see if there is a problem (if it still vacuums), anyhow I hope this helps, pm me to discuss further & I'll give my mobile number.

I do not have an auxiliary tank, but one of the fuel level sensors in my MY16 was faulty and replaced last November. The gauge would dutifully drop until 1/2 tank level and then stop and it was only by watching the km traveled that I knew when to refill. There is no way I was doing 623km on 1/2 a tank and with 378km left at 9.1 l/100km - 1,001km on one tank would be nice! There must be one sensor to do the upper 1/2 of the tank and a second to do the lower 1/2.

Andrew

Not quite.

The tank is a long tank running parallel to the DS of the vehicle.

The sensors are located fore and aft

Just spoke to Michael at Solitaire and I'm very happy with his diagnostic approach and willingness to get this sorted out and they are keeping in touch with me regularly - I can't ask for anymore than that and the problem is a tricky one. They have the main tank out again and running diagnostics with the tank out but still connected. At the moment they are leaning towards a software issue which is very hard to track down. Normally when the tank is filled the car is stopped with the engine off and when the car is started the "auto trip" computer resets. What may be happening is that the computer gets confused when the fuel is pumped directly from the auxiliary tank while the car is running. After their tank test they are going to do a battery reset (ctrl Alt Del) and then run the main tank down to empty without pumping any fuel across from the auxiliary - see what happens.
They don't think its a venting problem at this stage.
Interestingly another D4 MY16 with an auxillary tank has just been delivered to LR on a tray bed with exactly the same problem. Apparently the software is different for the MY16's which would explain why possibly other D4's don't have this issue.
Cheers