Hi Car didn't start last week, was low on fuel but still showing 40 km (~25 miles) left to empty. Last year my fuel pump module went bad so I thought this could be the same issue. Car sat overnight at work and the next morning I replaced the module (I wrote another thread about it). Car started right away and revved fine but later that day, when I went to drive home the car stalled when pulling out of the parking lot. Tried re-starting it but it died right away. Added 20 liters (5 gallons) of fuel and tried again numerous times with no luck. Towed it to a mechanic close to work that I've used before. Car sat overnight. Next day the mechanic told me he could not get it to start, pushed it into the shop and removed the rear bench. Then they tried and the car started right away, test drove it and at the end, they could not find anything wrong. Picked it up and filled up the tank. Six days later it is still running fine. There have not been any CEL's or lean codes, only code was for low fuel rail pressure. Mechanic said these cars had a transfer pump to send fuel from one of the tank to another and a sender pump to send the fuel to the HPFP. Is this correct or does the sender pump pick fuel from both sides? I've been paying close attention since this happened and I can hear the fuel pump prime every time I unlock the vehicle, so that is working. I suspect that what could have happened is that whatever picks fuel from the driver's side of the fuel tank failed to do so and the passenger side of the tank ran empty (remember this is a saddle tank divided by the drive shaft). Then it took a while to get the extra 20 liters of fuel I added into the system. I plan to let it run low again to see if it happens again, this time I'll be carrying extra fuel in the trunk and I won't crank it so the system doesn't go completely dry. If this happens it will confirm my theory but I still do not know if there is in fact a third (transfer) pump or what takes care of keeping the fuel level equal on both sides of the tank. Thoughts?