Hello,
just 1 week of x300 and this is the 5th problem I have. This is really a nasty problem anyway. Gas gauge went suddenly ZERO after I did full tank gas and I drove 6 miles. The gauge indicator started to shake after 6 miles and went to zero. At the same time the Gas indicator light is always on. The tank is full.
That's really a problem sine I commute 100 miles a day everyday.
What could be the reason ? Any easy thing to check ?
thank you very much.

 

You can read it at the RS3 connector pin 25 to ground . There is a resistance value for a empty tank . There is a fuel level sender cleaner other them the injector cleaners and others . There is a organic growth that forms on the potentiometer

 

Jaguar offered info 20 years ago.
TSBs are your friend. For some reason people seem to have an aversion to reading old TSBs???? I uploaded HUNDREDS to this site and Gus has them on his site.

bob

 

you mean I can read something with the OBD-II monitor ?

 

With a meter . Something like 180 ohms empty if I remember

 

update on the situation.
After I did 20 miles the gauge indicator went back to Full. Then it worked.
Next gas tank refill I avoided to have it completely full and left 2 gallons from completely empty. For now it did not malfunction again. Finger crossed.
Looks like ti does not like to be 100% full up to the hole.

 

xjfourty,

If the gas gauge does not end up working (as mine) then I recommend using the dash "used fuel" reading. Just remember how many gallons you added to the tank and try to fill up when you have 1 gallon left in tank. Been doing this since I got my car back in May.

 

this is a great idea... will do it.
only thing is that the orange low gas warning is really annoying specially when you drive at night.

 

I had this problem on my 95 for a month or two. Every top-up, the gauge would go to the empty peg and the Fuel low indicator would illuminate. Over time, generally by the time I reached my destination, the gauge would return to Full, the light extinguished as the needle exceeded the 1/8 point and all was well until the next top-up.

Caution on using the fuel-used field on the info-center: Through meticulous and systematic re-setting of mine at each top up combined with repeated recording of top-up values, I've established that, while variable, a good average is that mine under-reports fuel-used by about 10%. Sometimes more, sometimes less, but that is a generally accurate avg. (This gives a slightly rosier than actual MPG figure in the info center, as well.) So given the 21.3 gal (US) capacity, I'd be leery of going much beyond 18 gal used before adding fuel.

I also commute 100 miles/day with a significant highway portion, and tend to average 19-20 mpg (US gal) So I know I can count on 350 mi. easily from a full tank, leaving sufficient reserve to find fuel at a reasonable price. The key in both of these "work-around" methods is to religiously reset your computer at each top-up.

To resolve the issue, I fit a new sender acquired from Rock-Auto. The only issue is that it seems to have a discontinuity in the bottom half. Now, I get maybe 250-300 miles from Full to Half, and a precipitous drop thereafter. At 100 mi/day, it doesn't take long to learn the new idiosyncrasy, but I do wish it were more linear.

If you replace the sender, be sure to burn down below 1/4 tank, or about 5 gal left onboard, lest you make a mess in the boot. Also, exercise patience as getting the old out and putting the new in is a bit like threading a needle whilst holding the thread with chopstix.

 

A $ 5.00 try at Walmart as this is different then injector cleaner . We would bio-bore the capacitance type senders on aircraft to keep them from acting up . Can't say if this would work but is a easy try . You would have to determain if the sender unit pivot axis is near the bottom or top of the tank for adequate amount of fuel level to get it in the area of interest .