Fuel Light does not work even with it pass the red?/shift up

[mratk]

Hi all I am new to this,
i have a 62 plate Se 4x4 2.2 Nav

i am having problems with the low fuel light it will not work when it goes passed red but it does come on when turning over?

also my shift up light does not work could this be anything to do with the bulb or wiring or fuses?

Has anyone had any of these problems and could shine some light how to fix would be great

thanks 

[victor]

Can't say I've heard of this before mratk but can I clarify something. You say the low fuel warning light comes on when turning over - do you mean it comes on (along with all the other warning lights) when you first switch on the ignition?

Someone said before that the shift warning light comes on once the engine reaches 2,000 rpm in the intermediate gears so it must be a fairly simple circuit. I've heard of ppl having trouble with the electrical connectors behind the instrument panel (speedometer, rev counter etc) so it might be wortwhile seeing if you can release that, pull it forward and let you in to check the connectors.

[Dulac]

Aug 9, 2018 16:13:11 GMT mratk said:

Hi all I am new to this,
i have a 62 plate Se 4x4 2.2 Nav

i am having problems with the low fuel light it will not work when it goes passed red but it does come on when turning over?

also my shift up light does not work could this be anything to do with the bulb or wiring or fuses?

Has anyone had any of these problems and could shine some light how to fix would be great

thanks 

Welcome mratk. Surely you don't want to let your fuel get so low as to illuminate the warning light and presumably your fuel gauge works OK? On mine the shift indicator appears at precisely 2000rpm.

[mratk]

Thanks for the reply’s

Hi Victor, yes that is correct the fuel light comes on with the other warning lights when I switch the ignition on have you seen something like that before?

The shift light still doesn’t come on after 2000rpm so I have took out the board but only has one wire plug on the back can’t see how to see what wire goes where. Is the plug the connectors you are on about? Cheers

Hi dulac, the fuel gauge works well the needle moves but you have a big red bit on the gauge so surly the light so come on when it goes under? Also my trip computer will never go under 60 what’s a it wired soon as it hits 60 it start going back up

Man thanks

[victor]

If the fuel warning light comes on during the initial self test procedure at least it proves the integrity of the lamp and its connectors at the instrument panel end. If the vehicle is being driven and the fuel level becomes too low then I'd imagine the in-tank sensor should generate a signal, causing the low level warning to illuminate on the dash. So you may have a faulty in-tank sensor even though the needle works OK. I don't know anything about the test procedure for this and am not sure whether there's an removable panel under the rear seat (or in the load compartment) to gain access to the wiring connectors on the fuel tank. I believe the in-tank pump and level sensor is a combined unit fitted to one side of the fuel saddle tank, might be able to get you a link for that.

The connector for the instrument panel, is it a card edge type or a cannon plug?

[mratk]

If you could get a link would be great cheers,

Also when you unbolt the instrument panel it’s one big plug and loads of different colour wires but you can’t tell which wire is for the shift light as the plug plugs into the instrument panel: do I have to open the instrument panel up.?

[Dulac]

Aug 9, 2018 18:15:18 GMT mratk said:

Thanks for the reply’s

Hi Victor, yes that is correct the fuel light comes on with the other warning lights when I switch the ignition on have you seen something like that before?

The shift light still doesn’t come on after 2000rpm so I have took out the board but only has one wire plug on the back can’t see how to see what wire goes where. Is the plug the connectors you are on about? Cheers

Hi dulac, the fuel gauge works well the needle moves but you have a big red bit on the gauge so surly the light so come on when it goes under? Also my trip computer will never go under 60 what’s a it wired soon as it hits 60 it start going back up

Man thanks

Others told me that if you know the shift light comes on at 2000rpm then whether it works or not is of no consequence. I tend to use the rev counter a lot when driving.

The fuel warning light came up once on mine and the BC indicated there was about 40 miles range left (subject to driving conditions). The coloured bit on the gauge is just a visual warning, I believe, and isn't necessarily linked to the operation of the light. I vowed not to let it happen again, thinking of sediment in the tank being drawn into the injector system. Consequently I always refill around the 1/8 tank mark as an absolute minimum, with the added knowledge that if a regen starts I can complete it if I want to. Didn't seem much point in running on empty and if on a motorway just put £5 worth in to get you to a filling station situated in the real world. The OM states (my bold type):

Low fuel
illuminates yellow.
When the engine is started, illuminates briefly. If it does not illuminate, seek the assistance of a workshop.
Illuminates during driving when fuel level in tank is too low. Refuel immediately.
Never run the tank dry. Erratic fuel supply can cause catalytic converter to overheat.
Diesel engines: if the tank has been run dry, bleed the fuel system.

Upshift
illuminates green.
Upshifting is recommended for fuel saving purposes.

[mratk]

Mine just don’t work fulstop lol. I kno it’s not a problem not having it working but I fort it may be linked to the fuel warning light.

It was a second hand Antara and haven’t had it long and car sales always seem to run cars dry so I wonder if they didn’t bleed it right!! Does anyone think it’s worth bleeding again ?

[victor]

It's not worth bleeding it, comomon rail diesels are largely self-bleeding. Even if you change the fuel filter, it's usually only necessary to turn the ignition on and off a few times to cycle the in-tank pump before you engage the starter although I've had to disconnect the leak-off pipes to help if it's a difficult one to get started.

Can't help with a link for the fuel system electrics, but there's two sender units in the fuel tank, one for each side as it's a saddle tank. The resistance gets higher as the floats descend and the signal is sent to the ECU. I assume once the signal approaches a certain value the ECU will command the Low Fuel warning light to come on. You'd really need to have the full diagnostic procedure to check it out.

[mratk]

Ok thanks victor if you could get that link I will have a look!

Also about the shift up light not working someone took me to get Antara wire diagram from ecu to find the tachometer wire, if anyone knows where to get that would be great

Thanks