A4 3.0 V6 TDI Quattro cutting out glow plug light flashing

[Tim Roberts]

Hi,

I'm new to the forum and hope some one can help. I have a 2009 A4 3.0 V6 TDI Quattro, I have owned the car for a year now and it has been great until before Christmas. I went to start it one morning, it started straight away then cut out and the glow plug light flashed (I did wait for them to go out before starting) it did it again then the engine management light came on. Then when I reved the engine just after it fired up it was fine and both lights went out about 10minutes later. My partner took it to be plugged in when I was at work and the code she was told was low pressure in the rail. It's been serviced everytime it's been needed by Audi. It only seems to happen when the fuel mileage is less then 60 ( around 1/4) of a tank, surely it shouldn't do this.

Any help would be great!

Thanks

 Tim

[Brad-B5]

Hi Tim

Welcome to the forum :D

Have you replaced the glow plug's?

Regards

Bradley

[Tim Roberts]

Hi Bradley,

Thanks! 

No, I haven't touched them. Apparently the flashing glow plug light is just a warning not that there's an issue with them as its to do with the low fuel rail pressure.

Cheers

Tim

[Audi Owners Club.]

Hi Tim.....welcome to the Forum

One possibility in the cold weather is the glow plug(s) getting weak and also another possibility is the pump is struggling to pick up with low fuel level, so may be best to not let it drop so low (and on an incline, which may not help). 

Have known this on some cars that have a saddle tank (one that draws fuel from both sides of the tank) where the lift pump from the reserve side struggles to transfer fuel and therefore the pressure drops.

Let us know what you find to be the fault.

Cheers  Trevor